git.delta.rocks / unique-network / refs/commits / e684c8aafc35

difftreelog

Merge branch 'develop' into doc/architectural-changes

Farhad Hakimov2022-07-22parents: #5b3cd06 #26e74f7.patch.diff
in: master

80 files changed

modifiedCargo.lockdiffbeforeafterboth
before · Cargo.lock
985 packageslockfile v3
after · Cargo.lock
985 packageslockfile v3
modifiedMakefilediffbeforeafterboth
--- a/Makefile
+++ b/Makefile
@@ -12,6 +12,10 @@
 NONFUNGIBLE_EVM_STUBS=./pallets/nonfungible/src/stubs
 NONFUNGIBLE_EVM_ABI=./tests/src/eth/nonFungibleAbi.json
 
+REFUNGIBLE_EVM_STUBS=./pallets/refungible/src/stubs
+RENFUNGIBLE_EVM_ABI=./tests/src/eth/reFungibleAbi.json
+RENFUNGIBLE_TOKEN_EVM_ABI=./tests/src/eth/reFungibleTokenAbi.json
+
 CONTRACT_HELPERS_STUBS=./pallets/evm-contract-helpers/src/stubs/
 CONTRACT_HELPERS_ABI=./tests/src/eth/util/contractHelpersAbi.json
 
@@ -21,7 +25,7 @@
 TESTS_API=./tests/src/eth/api/
 
 .PHONY: regenerate_solidity
-regenerate_solidity: UniqueFungible.sol UniqueNFT.sol ContractHelpers.sol CollectionHelpers.sol
+regenerate_solidity: UniqueFungible.sol UniqueNFT.sol UniqueRefungibleToken.sol ContractHelpers.sol CollectionHelpers.sol
 
 UniqueFungible.sol:
 	PACKAGE=pallet-fungible NAME=erc::gen_iface OUTPUT=$(TESTS_API)/$@ ./.maintain/scripts/generate_sol.sh
@@ -30,6 +34,10 @@
 UniqueNFT.sol:
 	PACKAGE=pallet-nonfungible NAME=erc::gen_iface OUTPUT=$(TESTS_API)/$@ ./.maintain/scripts/generate_sol.sh
 	PACKAGE=pallet-nonfungible NAME=erc::gen_impl OUTPUT=$(NONFUNGIBLE_EVM_STUBS)/$@ ./.maintain/scripts/generate_sol.sh
+	
+UniqueRefungibleToken.sol:
+	PACKAGE=pallet-refungible NAME=erc_token::gen_iface OUTPUT=$(TESTS_API)/$@ ./.maintain/scripts/generate_sol.sh
+	PACKAGE=pallet-refungible NAME=erc_token::gen_impl OUTPUT=$(REFUNGIBLE_EVM_STUBS)/$@ ./.maintain/scripts/generate_sol.sh
 
 ContractHelpers.sol:
 	PACKAGE=pallet-evm-contract-helpers NAME=eth::contract_helpers_iface OUTPUT=$(TESTS_API)/$@ ./.maintain/scripts/generate_sol.sh
@@ -47,6 +55,10 @@
 	INPUT=$(NONFUNGIBLE_EVM_STUBS)/$< OUTPUT=$(NONFUNGIBLE_EVM_STUBS)/UniqueNFT.raw ./.maintain/scripts/compile_stub.sh
 	INPUT=$(NONFUNGIBLE_EVM_STUBS)/$< OUTPUT=$(NONFUNGIBLE_EVM_ABI) ./.maintain/scripts/generate_abi.sh
 
+UniqueRefungibleToken: UniqueRefungibleToken.sol
+	INPUT=$(REFUNGIBLE_EVM_STUBS)/$< OUTPUT=$(REFUNGIBLE_EVM_STUBS)/UniqueRefungibleToken.raw ./.maintain/scripts/compile_stub.sh
+	INPUT=$(REFUNGIBLE_EVM_STUBS)/$< OUTPUT=$(RENFUNGIBLE_TOKEN_EVM_ABI) ./.maintain/scripts/generate_abi.sh
+
 ContractHelpers: ContractHelpers.sol
 	INPUT=$(CONTRACT_HELPERS_STUBS)/$< OUTPUT=$(CONTRACT_HELPERS_STUBS)/ContractHelpers.raw ./.maintain/scripts/compile_stub.sh
 	INPUT=$(CONTRACT_HELPERS_STUBS)/$< OUTPUT=$(CONTRACT_HELPERS_ABI) ./.maintain/scripts/generate_abi.sh
@@ -55,7 +67,7 @@
 	INPUT=$(COLLECTION_HELPER_STUBS)/$< OUTPUT=$(COLLECTION_HELPER_STUBS)/CollectionHelpers.raw ./.maintain/scripts/compile_stub.sh
 	INPUT=$(COLLECTION_HELPER_STUBS)/$< OUTPUT=$(COLLECTION_HELPER_ABI) ./.maintain/scripts/generate_abi.sh
 
-evm_stubs: UniqueFungible UniqueNFT ContractHelpers CollectionHelpers
+evm_stubs: UniqueFungible UniqueNFT UniqueRefungibleToken ContractHelpers CollectionHelpers
 
 .PHONY: _bench
 _bench:
addedclient/rpc/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/client/rpc/CHANGELOG.md
@@ -0,0 +1,11 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.1] - 2022-07-14
+
+### Added
+
+ - Implementation of RPC method `token_owners` returning 10 owners in no particular order.
+    This was an internal request to improve the web interface and support fractionalization event. 
+ 
\ No newline at end of file
modifiedclient/rpc/Cargo.tomldiffbeforeafterboth
--- a/client/rpc/Cargo.toml
+++ b/client/rpc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "uc-rpc"
-version = "0.1.0"
+version = "0.1.1"
 license = "GPLv3"
 edition = "2021"
modifiedclient/rpc/src/lib.rsdiffbeforeafterboth
--- a/client/rpc/src/lib.rs
+++ b/client/rpc/src/lib.rs
@@ -77,6 +77,15 @@
 		at: Option<BlockHash>,
 	) -> Result<Option<CrossAccountId>>;
 
+	/// Returns 10 tokens owners in no particular order.
+	#[method(name = "unique_tokenOwners")]
+	fn token_owners(
+		&self,
+		collection: CollectionId,
+		token: TokenId,
+		at: Option<BlockHash>,
+	) -> Result<Vec<CrossAccountId>>;
+
 	/// Get the topmost token owner in the hierarchy of a possibly nested token.
 	#[method(name = "unique_topmostTokenOwner")]
 	fn topmost_token_owner(
@@ -510,6 +519,7 @@
 	pass_method!(next_sponsored(collection: CollectionId, account: CrossAccountId, token: TokenId) -> Option<u64>, unique_api);
 	pass_method!(effective_collection_limits(collection_id: CollectionId) -> Option<CollectionLimits>, unique_api);
 	pass_method!(total_pieces(collection_id: CollectionId, token_id: TokenId) -> Option<u128>, unique_api);
+	pass_method!(token_owners(collection: CollectionId, token: TokenId) -> Vec<CrossAccountId>, unique_api);
 }
 
 #[allow(deprecated)]
addedpallets/common/CHANGELOG.MDdiffbeforeafterboth
--- /dev/null
+++ b/pallets/common/CHANGELOG.MD
@@ -0,0 +1,10 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.2] - 2022-07-20
+
+### Fixed
+
+-   Some methods in `#[solidity_interface]` for `CollectionHandle` had invalid
+    mutability modifiers, causing invalid stub/abi generation.
addedpallets/common/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/pallets/common/CHANGELOG.md
@@ -0,0 +1,12 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.1] - 2022-07-14
+
+### Added
+
+ - Implementation of RPC method `token_owners` returning 10 owners in no particular order.
+    This was an internal request to improve the web interface and support fractionalization event. 
+
+ 
\ No newline at end of file
modifiedpallets/common/Cargo.tomldiffbeforeafterboth
--- a/pallets/common/Cargo.toml
+++ b/pallets/common/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pallet-common"
-version = "0.1.0"
+version = "0.1.2"
 license = "GPLv3"
 edition = "2021"
modifiedpallets/common/src/dispatch.rsdiffbeforeafterboth
--- a/pallets/common/src/dispatch.rs
+++ b/pallets/common/src/dispatch.rs
@@ -1,3 +1,5 @@
+//! Module with interfaces for dispatching collections.
+
 use frame_support::{
 	dispatch::{
 		DispatchResultWithPostInfo, PostDispatchInfo, Weight, DispatchErrorWithPostInfo,
@@ -20,7 +22,10 @@
 	// submit_logs is measured as part of collection pallets
 }
 
-/// Helper function to implement substrate calls for common collection methods
+/// Helper function to implement substrate calls for common collection methods.
+///
+/// * `collection` - The collection on which to call the method.
+/// * `call` - The function in which to call the corresponding method from [`CommonCollectionOperations`].
 pub fn dispatch_tx<
 	T: Config,
 	C: FnOnce(&dyn CommonCollectionOperations<T>) -> DispatchResultWithPostInfo,
@@ -64,15 +69,31 @@
 	result
 }
 
+/// Interface for working with different collections through the dispatcher.
 pub trait CollectionDispatch<T: Config> {
+	/// Create a collection. The collection will be created according to the value of [`data.mode`](CreateCollectionData::mode).
+	///
+	/// * `sender` - The user who will become the owner of the collection.
+	/// * `data` - Description of the created collection.
 	fn create(
 		sender: T::CrossAccountId,
 		data: CreateCollectionData<T::AccountId>,
 	) -> DispatchResult;
+
+	/// Delete the collection.
+	///
+	/// * `sender` - The owner of the collection.
+	/// * `handle` - Collection handle.
 	fn destroy(sender: T::CrossAccountId, handle: CollectionHandle<T>) -> DispatchResult;
 
+	/// Get a specialized collection from the handle.
+	///
+	/// * `handle` - Collection handle.
 	fn dispatch(handle: CollectionHandle<T>) -> Self;
+
+	/// Get the collection handle for the corresponding implementation.
 	fn into_inner(self) -> CollectionHandle<T>;
 
+	/// Get the implementation of [`CommonCollectionOperations`].
 	fn as_dyn(&self) -> &dyn CommonCollectionOperations<T>;
 }
modifiedpallets/common/src/erc.rsdiffbeforeafterboth
--- a/pallets/common/src/erc.rs
+++ b/pallets/common/src/erc.rs
@@ -14,6 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
+//! This module contains the implementation of pallet methods for evm.
+
 use evm_coder::{
 	solidity_interface, solidity, ToLog,
 	types::*,
@@ -29,29 +31,40 @@
 
 use crate::{Pallet, CollectionHandle, Config, CollectionProperties};
 
+/// Events for ethereum collection helper.
 #[derive(ToLog)]
 pub enum CollectionHelpersEvents {
+	/// The collection has been created.
 	CollectionCreated {
+		/// Collection owner.
 		#[indexed]
 		owner: address,
+
+		/// Collection ID.
 		#[indexed]
 		collection_id: address,
 	},
 }
 
 /// Does not always represent a full collection, for RFT it is either
-/// collection (Implementing ERC721), or specific collection token (Implementing ERC20)
+/// collection (Implementing ERC721), or specific collection token (Implementing ERC20).
 pub trait CommonEvmHandler {
 	const CODE: &'static [u8];
 
+	/// Call precompiled handle.
 	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult>;
 }
 
+/// @title A contract that allows you to work with collections.
 #[solidity_interface(name = "Collection")]
 impl<T: Config> CollectionHandle<T>
 where
 	T::AccountId: From<[u8; 32]>,
 {
+	/// Set collection property.
+	///
+	/// @param key Property key.
+	/// @param value Propery value.
 	fn set_collection_property(
 		&mut self,
 		caller: caller,
@@ -68,6 +81,9 @@
 			.map_err(dispatch_to_evm::<T>)
 	}
 
+	/// Delete collection property.
+	///
+	/// @param key Property key.
 	fn delete_collection_property(&mut self, caller: caller, key: string) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let key = <Vec<u8>>::from(key)
@@ -77,7 +93,12 @@
 		<Pallet<T>>::delete_collection_property(self, &caller, key).map_err(dispatch_to_evm::<T>)
 	}
 
-	/// Throws error if key not found
+	/// Get collection property.
+	///
+	/// @dev Throws error if key not found.
+	///
+	/// @param key Property key.
+	/// @return bytes The property corresponding to the key.
 	fn collection_property(&self, key: string) -> Result<bytes> {
 		let key = <Vec<u8>>::from(key)
 			.try_into()
@@ -89,6 +110,11 @@
 		Ok(prop.to_vec())
 	}
 
+	/// Set the sponsor of the collection.
+	///
+	/// @dev In order for sponsorship to work, it must be confirmed on behalf of the sponsor.
+	///
+	/// @param sponsor Address of the sponsor from whose account funds will be debited for operations with the contract.
 	fn set_collection_sponsor(&mut self, caller: caller, sponsor: address) -> Result<void> {
 		check_is_owner_or_admin(caller, self)?;
 
@@ -98,6 +124,9 @@
 		save(self)
 	}
 
+	/// Collection sponsorship confirmation.
+	///
+	/// @dev After setting the sponsor for the collection, it must be confirmed with this function.
 	fn confirm_collection_sponsorship(&mut self, caller: caller) -> Result<void> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		if !self
@@ -109,6 +138,16 @@
 		save(self)
 	}
 
+	/// Set limits for the collection.
+	/// @dev Throws error if limit not found.
+	/// @param limit Name of the limit. Valid names:
+	/// 	"accountTokenOwnershipLimit",
+	/// 	"sponsoredDataSize",
+	/// 	"sponsoredDataRateLimit",
+	/// 	"tokenLimit",
+	/// 	"sponsorTransferTimeout",
+	/// 	"sponsorApproveTimeout"
+	/// @param value Value of the limit.
 	#[solidity(rename_selector = "setCollectionLimit")]
 	fn set_int_limit(&mut self, caller: caller, limit: string, value: uint32) -> Result<void> {
 		check_is_owner_or_admin(caller, self)?;
@@ -145,6 +184,13 @@
 		save(self)
 	}
 
+	/// Set limits for the collection.
+	/// @dev Throws error if limit not found.
+	/// @param limit Name of the limit. Valid names:
+	/// 	"ownerCanTransfer",
+	/// 	"ownerCanDestroy",
+	/// 	"transfersEnabled"
+	/// @param value Value of the limit.
 	#[solidity(rename_selector = "setCollectionLimit")]
 	fn set_bool_limit(&mut self, caller: caller, limit: string, value: bool) -> Result<void> {
 		check_is_owner_or_admin(caller, self)?;
@@ -172,11 +218,18 @@
 		save(self)
 	}
 
+	/// Get contract address.
 	fn contract_address(&self, _caller: caller) -> Result<address> {
 		Ok(crate::eth::collection_id_to_address(self.id))
 	}
 
-	fn add_collection_admin_substrate(&self, caller: caller, new_admin: uint256) -> Result<void> {
+	/// Add collection admin by substrate address.
+	/// @param new_admin Substrate administrator address.
+	fn add_collection_admin_substrate(
+		&mut self,
+		caller: caller,
+		new_admin: uint256,
+	) -> Result<void> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let mut new_admin_arr: [u8; 32] = Default::default();
 		new_admin.to_big_endian(&mut new_admin_arr);
@@ -186,35 +239,44 @@
 		Ok(())
 	}
 
+	/// Remove collection admin by substrate address.
+	/// @param admin Substrate administrator address.
 	fn remove_collection_admin_substrate(
-		&self,
+		&mut self,
 		caller: caller,
-		new_admin: uint256,
+		admin: uint256,
 	) -> Result<void> {
 		let caller = T::CrossAccountId::from_eth(caller);
-		let mut new_admin_arr: [u8; 32] = Default::default();
-		new_admin.to_big_endian(&mut new_admin_arr);
-		let account_id = T::AccountId::from(new_admin_arr);
-		let new_admin = T::CrossAccountId::from_sub(account_id);
-		<Pallet<T>>::toggle_admin(self, &caller, &new_admin, false)
-			.map_err(dispatch_to_evm::<T>)?;
+		let mut admin_arr: [u8; 32] = Default::default();
+		admin.to_big_endian(&mut admin_arr);
+		let account_id = T::AccountId::from(admin_arr);
+		let admin = T::CrossAccountId::from_sub(account_id);
+		<Pallet<T>>::toggle_admin(self, &caller, &admin, false).map_err(dispatch_to_evm::<T>)?;
 		Ok(())
 	}
 
-	fn add_collection_admin(&self, caller: caller, new_admin: address) -> Result<void> {
+	/// Add collection admin.
+	/// @param new_admin Address of the added administrator.
+	fn add_collection_admin(&mut self, caller: caller, new_admin: address) -> Result<void> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let new_admin = T::CrossAccountId::from_eth(new_admin);
 		<Pallet<T>>::toggle_admin(self, &caller, &new_admin, true).map_err(dispatch_to_evm::<T>)?;
 		Ok(())
 	}
 
-	fn remove_collection_admin(&self, caller: caller, admin: address) -> Result<void> {
+	/// Remove collection admin.
+	///
+	/// @param new_admin Address of the removed administrator.
+	fn remove_collection_admin(&mut self, caller: caller, admin: address) -> Result<void> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let admin = T::CrossAccountId::from_eth(admin);
 		<Pallet<T>>::toggle_admin(self, &caller, &admin, false).map_err(dispatch_to_evm::<T>)?;
 		Ok(())
 	}
 
+	/// Toggle accessibility of collection nesting.
+	///
+	/// @param enable If "true" degenerates to nesting: 'Owner' else to nesting: 'Disabled'
 	#[solidity(rename_selector = "setCollectionNesting")]
 	fn set_nesting_bool(&mut self, caller: caller, enable: bool) -> Result<void> {
 		check_is_owner_or_admin(caller, self)?;
@@ -235,6 +297,10 @@
 		save(self)
 	}
 
+	/// Toggle accessibility of collection nesting.
+	///
+	/// @param enable If "true" degenerates to nesting: {OwnerRestricted: [1, 2, 3]} else to nesting: 'Disabled'
+	/// @param collections Addresses of collections that will be available for nesting.
 	#[solidity(rename_selector = "setCollectionNesting")]
 	fn set_nesting(
 		&mut self,
@@ -280,6 +346,10 @@
 		save(self)
 	}
 
+	/// Set the collection access method.
+	/// @param mode Access mode
+	/// 	0 for Normal
+	/// 	1 for AllowList
 	fn set_collection_access(&mut self, caller: caller, mode: uint8) -> Result<void> {
 		check_is_owner_or_admin(caller, self)?;
 		let permissions = CollectionPermissions {
@@ -300,20 +370,29 @@
 		save(self)
 	}
 
-	fn add_to_collection_allow_list(&self, caller: caller, user: address) -> Result<void> {
+	/// Add the user to the allowed list.
+	///
+	/// @param user Address of a trusted user.
+	fn add_to_collection_allow_list(&mut self, caller: caller, user: address) -> Result<void> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let user = T::CrossAccountId::from_eth(user);
 		<Pallet<T>>::toggle_allowlist(self, &caller, &user, true).map_err(dispatch_to_evm::<T>)?;
 		Ok(())
 	}
 
-	fn remove_from_collection_allow_list(&self, caller: caller, user: address) -> Result<void> {
+	/// Remove the user from the allowed list.
+	///
+	/// @param user Address of a removed user.
+	fn remove_from_collection_allow_list(&mut self, caller: caller, user: address) -> Result<void> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let user = T::CrossAccountId::from_eth(user);
 		<Pallet<T>>::toggle_allowlist(self, &caller, &user, false).map_err(dispatch_to_evm::<T>)?;
 		Ok(())
 	}
 
+	/// Switch permission for minting.
+	///
+	/// @param mode Enable if "true".
 	fn set_collection_mint_mode(&mut self, caller: caller, mode: bool) -> Result<void> {
 		check_is_owner_or_admin(caller, self)?;
 		let permissions = CollectionPermissions {
@@ -351,6 +430,7 @@
 	Ok(())
 }
 
+/// Get the "tokenURI" key as [PropertyKey](up_data_structs::PropertyKey).
 pub fn token_uri_key() -> up_data_structs::PropertyKey {
 	b"tokenURI"
 		.to_vec()
modifiedpallets/common/src/eth.rsdiffbeforeafterboth
--- a/pallets/common/src/eth.rs
+++ b/pallets/common/src/eth.rs
@@ -14,6 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
+//! The module contains a number of functions for converting and checking ethereum identifiers.
+
 use up_data_structs::CollectionId;
 use sp_core::H160;
 
@@ -23,6 +25,7 @@
 	0x17, 0xc4, 0xe6, 0x45, 0x3c, 0xc4, 0x9a, 0xaa, 0xae, 0xac, 0xa8, 0x94, 0xe6, 0xd9, 0x68, 0x3e,
 ];
 
+/// Maps the ethereum address of the collection in substrate.
 pub fn map_eth_to_id(eth: &H160) -> Option<CollectionId> {
 	if eth[0..16] != ETH_COLLECTION_PREFIX {
 		return None;
@@ -31,6 +34,8 @@
 	id_bytes.copy_from_slice(&eth[16..20]);
 	Some(CollectionId(u32::from_be_bytes(id_bytes)))
 }
+
+/// Maps the substrate collection id in ethereum.
 pub fn collection_id_to_address(id: CollectionId) -> H160 {
 	let mut out = [0; 20];
 	out[0..16].copy_from_slice(&ETH_COLLECTION_PREFIX);
@@ -38,6 +43,7 @@
 	H160(out)
 }
 
+/// Check if the ethereum address is a collection.
 pub fn is_collection(address: &H160) -> bool {
 	address[0..16] == ETH_COLLECTION_PREFIX
 }
modifiedpallets/common/src/lib.rsdiffbeforeafterboth
--- a/pallets/common/src/lib.rs
+++ b/pallets/common/src/lib.rs
@@ -14,8 +14,43 @@
 // You should have received a copy of the GNU General Public License
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
+//! # Common pallet
+//!
+//! The Common pallet provides functionality for handling collections.
+//!
+//! ## Overview
+//!
+//! The Common pallet provides an interface for common collection operations for different collection types
+//! (see [CommonCollectionOperations]), as well as a generic dispatcher for these, see [dispatch] module.
+//! It also provides this functionality to EVM, see [erc] and [eth] modules.
+//!
+//! The Common pallet provides functions for:
+//!
+//! - Setting and approving collection sponsor.
+//! - Get\set\delete allow list.
+//! - Get\set\delete collection properties.
+//! - Get\set\delete collection property permissions.
+//! - Get\set\delete token property permissions.
+//! - Get\set\delete collection administrators.
+//! - Checking access permissions.
+//!
+//! ### Terminology
+//! **Collection sponsor** - For the collection, you can set a sponsor, at whose expense it will
+//! be possible to mint tokens.
+//!
+//! **Allow list** - List of users who have the right to minting tokens.
+//!
+//! **Collection properties** - Collection properties are simply key-value stores where various
+//! metadata can be placed.
+//!
+//! **Permissions on token properties** - For each property in the token can be set permission
+//! to change, see [`PropertyPermission`].
+//!
+//! **Collection administrator** - For a collection, you can set administrators who have the right
+//! to most actions on the collection.
+
+#![warn(missing_docs)]
 #![cfg_attr(not(feature = "std"), no_std)]
-
 extern crate alloc;
 
 use core::ops::{Deref, DerefMut};
@@ -90,14 +125,24 @@
 pub mod eth;
 pub mod weights;
 
+/// Weight info.
 pub type SelfWeightOf<T> = <T as Config>::WeightInfo;
 
+/// Collection handle contains information about collection data and id.
+/// Also provides functionality to count consumed gas.
+///
+/// CollectionHandle is used as a generic wrapper for collections of all types.
+/// It allows to perform common operations and queries on any collection type,
+/// both completely general for all, as well as their respective implementations of [`CommonCollectionOperations`].
 #[must_use = "Should call submit_logs or save, otherwise some data will be lost for evm side"]
 pub struct CollectionHandle<T: Config> {
+	/// Collection id
 	pub id: CollectionId,
 	collection: Collection<T::AccountId>,
+	/// Substrate recorder for counting consumed gas
 	pub recorder: SubstrateRecorder<T>,
 }
+
 impl<T: Config> WithRecorder<T> for CollectionHandle<T> {
 	fn recorder(&self) -> &SubstrateRecorder<T> {
 		&self.recorder
@@ -106,7 +151,9 @@
 		self.recorder
 	}
 }
+
 impl<T: Config> CollectionHandle<T> {
+	/// Same as [CollectionHandle::new] but with an explicit gas limit.
 	pub fn new_with_gas_limit(id: CollectionId, gas_limit: u64) -> Option<Self> {
 		<CollectionById<T>>::get(id).map(|collection| Self {
 			id,
@@ -115,6 +162,7 @@
 		})
 	}
 
+	/// Same as [CollectionHandle::new] but with an existed [`SubstrateRecorder`].
 	pub fn new_with_recorder(id: CollectionId, recorder: SubstrateRecorder<T>) -> Option<Self> {
 		<CollectionById<T>>::get(id).map(|collection| Self {
 			id,
@@ -123,14 +171,18 @@
 		})
 	}
 
+	/// Retrives collection data from storage and creates collection handle with default parameters.
+	/// If collection not found return `None`
 	pub fn new(id: CollectionId) -> Option<Self> {
 		Self::new_with_gas_limit(id, u64::MAX)
 	}
 
+	/// Same as [`CollectionHandle::new`] but if collection not found [CollectionNotFound](Error::CollectionNotFound) returned.
 	pub fn try_get(id: CollectionId) -> Result<Self, DispatchError> {
 		Ok(Self::new(id).ok_or(<Error<T>>::CollectionNotFound)?)
 	}
 
+	/// Consume gas for reading.
 	pub fn consume_store_reads(&self, reads: u64) -> evm_coder::execution::Result<()> {
 		self.recorder
 			.consume_gas(T::GasWeightMapping::weight_to_gas(
@@ -140,6 +192,7 @@
 			))
 	}
 
+	/// Consume gas for writing.
 	pub fn consume_store_writes(&self, writes: u64) -> evm_coder::execution::Result<()> {
 		self.recorder
 			.consume_gas(T::GasWeightMapping::weight_to_gas(
@@ -148,16 +201,27 @@
 					.saturating_mul(writes),
 			))
 	}
+
+	/// Save collection to storage.
 	pub fn save(self) -> DispatchResult {
 		<CollectionById<T>>::insert(self.id, self.collection);
 		Ok(())
 	}
 
+	/// Set collection sponsor.
+	///
+	/// Unique collections allows sponsoring for certain actions.
+	/// This method allows you to set the sponsor of the collection.
+	/// In order for sponsorship to become active, it must be confirmed through [`Self::confirm_sponsorship`].
 	pub fn set_sponsor(&mut self, sponsor: T::AccountId) -> DispatchResult {
 		self.collection.sponsorship = SponsorshipState::Unconfirmed(sponsor);
 		Ok(())
 	}
 
+	/// Confirm sponsorship
+	///
+	/// In order for the sponsorship to become active, the user set as the sponsor must confirm their participation.
+	/// Before confirming sponsorship, the user must be specified as the sponsor of the collection via [`Self::set_sponsor`].
 	pub fn confirm_sponsorship(&mut self, sender: &T::AccountId) -> Result<bool, DispatchError> {
 		if self.collection.sponsorship.pending_sponsor() != Some(sender) {
 			return Ok(false);
@@ -168,7 +232,7 @@
 	}
 
 	/// Checks that the collection was created with, and must be operated upon through **Unique API**.
-	/// Now check only the `external_collection` flag and if it's **true**, then return `CollectionIsExternal` error.
+	/// Now check only the `external_collection` flag and if it's **true**, then return [`Error::CollectionIsExternal`] error.
 	pub fn check_is_internal(&self) -> DispatchResult {
 		if self.external_collection {
 			return Err(<Error<T>>::CollectionIsExternal)?;
@@ -178,7 +242,7 @@
 	}
 
 	/// Checks that the collection was created with, and must be operated upon through an **assimilated API**.
-	/// Now check only the `external_collection` flag and if it's **false**, then return `CollectionIsInternal` error.
+	/// Now check only the `external_collection` flag and if it's **false**, then return [`Error::CollectionIsInternal`] error.
 	pub fn check_is_external(&self) -> DispatchResult {
 		if !self.external_collection {
 			return Err(<Error<T>>::CollectionIsInternal)?;
@@ -203,23 +267,34 @@
 }
 
 impl<T: Config> CollectionHandle<T> {
-	pub fn check_is_owner(&self, subject: &T::CrossAccountId) -> DispatchResult {
-		ensure!(*subject.as_sub() == self.owner, <Error<T>>::NoPermission);
+	/// Checks if the `user` is the owner of the collection.
+	pub fn check_is_owner(&self, user: &T::CrossAccountId) -> DispatchResult {
+		ensure!(*user.as_sub() == self.owner, <Error<T>>::NoPermission);
 		Ok(())
 	}
-	pub fn is_owner_or_admin(&self, subject: &T::CrossAccountId) -> bool {
-		*subject.as_sub() == self.owner || <IsAdmin<T>>::get((self.id, subject))
+
+	/// Returns **true** if the `user` is the owner or administrator of the collection.
+	pub fn is_owner_or_admin(&self, user: &T::CrossAccountId) -> bool {
+		*user.as_sub() == self.owner || <IsAdmin<T>>::get((self.id, user))
 	}
-	pub fn check_is_owner_or_admin(&self, subject: &T::CrossAccountId) -> DispatchResult {
-		ensure!(self.is_owner_or_admin(subject), <Error<T>>::NoPermission);
+
+	/// Checks if the `user` is the owner or administrator of the collection.
+	pub fn check_is_owner_or_admin(&self, user: &T::CrossAccountId) -> DispatchResult {
+		ensure!(self.is_owner_or_admin(user), <Error<T>>::NoPermission);
 		Ok(())
 	}
+
+	/// Return **true** if `user` was not allowed to have tokens, and he can ignore such restrictions.
 	pub fn ignores_allowance(&self, user: &T::CrossAccountId) -> bool {
 		self.limits.owner_can_transfer() && self.is_owner_or_admin(user)
 	}
+
+	/// Return **true** if `user` does not have enough token parts, and he can ignore such restrictions.
 	pub fn ignores_owned_amount(&self, user: &T::CrossAccountId) -> bool {
 		self.limits.owner_can_transfer() && self.is_owner_or_admin(user)
 	}
+
+	/// Checks if the user is in the allow list. If not [Error::AddressNotInAllowlist] returns.
 	pub fn check_allowlist(&self, user: &T::CrossAccountId) -> DispatchResult {
 		ensure!(
 			<Allowlist<T>>::get((self.id, user)),
@@ -249,21 +324,34 @@
 		+ TypeInfo
 		+ account::Config
 	{
+		/// Weight information for functions of this pallet.
 		type WeightInfo: WeightInfo;
+
+		/// Events compatible with [`frame_system::Config::Event`].
 		type Event: IsType<<Self as frame_system::Config>::Event> + From<Event<Self>>;
 
+		/// Handler of accounts and payment.
 		type Currency: Currency<Self::AccountId>;
 
+		/// Set price to create a collection.
 		#[pallet::constant]
 		type CollectionCreationPrice: Get<
 			<<Self as Config>::Currency as Currency<Self::AccountId>>::Balance,
 		>;
+
+		/// Dispatcher of operations on collections.
 		type CollectionDispatch: CollectionDispatch<Self>;
 
+		/// Account which holds the chain's treasury.
 		type TreasuryAccountId: Get<Self::AccountId>;
+
+		/// Address under which the CollectionHelper contract would be available.
 		type ContractAddress: Get<H160>;
 
+		/// Mapper for token addresses to Ethereum addresses.
 		type EvmTokenAddressMapping: TokenAddressMapping<H160>;
+
+		/// Mapper for token addresses to [`CrossAccountId`].
 		type CrossTokenAddressMapping: TokenAddressMapping<Self::CrossAccountId>;
 	}
 
@@ -276,6 +364,7 @@
 
 	#[pallet::extra_constants]
 	impl<T: Config> Pallet<T> {
+		/// Maximum admins per collection.
 		pub fn collection_admins_limit() -> u32 {
 			COLLECTION_ADMINS_LIMIT
 		}
@@ -285,116 +374,116 @@
 	#[pallet::generate_deposit(pub fn deposit_event)]
 	pub enum Event<T: Config> {
 		/// New collection was created
-		///
-		/// # Arguments
-		///
-		/// * collection_id - Globally unique identifier of newly created collection.
-		/// * mode - [CollectionMode] converted into u8.
-		/// * account_id - Collection owner.
-		CollectionCreated(CollectionId, u8, T::AccountId),
+		CollectionCreated(
+			/// Globally unique identifier of newly created collection.
+			CollectionId,
+			/// [`CollectionMode`] converted into _u8_.
+			u8,
+			/// Collection owner.
+			T::AccountId,
+		),
 
 		/// New collection was destroyed
-		///
-		/// # Arguments
-		///
-		/// * collection_id - Globally unique identifier of collection that has been destroyed.
-		CollectionDestroyed(CollectionId),
+		CollectionDestroyed(
+			/// Globally unique identifier of collection.
+			CollectionId,
+		),
 
 		/// New item was created.
-		///
-		/// # Arguments
-		///
-		/// * collection_id - ID of the collection where the item was created.
-		/// * item_id - ID of the item. Unique within the collection.
-		/// * recipient - Owner of the newly created item.
-		/// * amount - The amount of tokens that were created (always 1 for NFT).
-		ItemCreated(CollectionId, TokenId, T::CrossAccountId, u128),
+		ItemCreated(
+			/// Id of the collection where item was created.
+			CollectionId,
+			/// Id of an item. Unique within the collection.
+			TokenId,
+			/// Owner of newly created item
+			T::CrossAccountId,
+			/// Always 1 for NFT
+			u128,
+		),
 
 		/// Collection item was burned.
-		///
-		/// # Arguments
-		///
-		/// * collection_id - Identifier of the collection to which the burned NFT belonged.
-		/// * item_id - Identifier of burned NFT.
-		/// * owner - Which user has destroyed their tokens.
-		/// * amount - Amount of tokens that were destroyed (always 1 for NFT).
-		ItemDestroyed(CollectionId, TokenId, T::CrossAccountId, u128),
+		ItemDestroyed(
+			/// Id of the collection where item was destroyed.
+			CollectionId,
+			/// Identifier of burned NFT.
+			TokenId,
+			/// Which user has destroyed its tokens.
+			T::CrossAccountId,
+			/// Amount of token pieces destroed. Always 1 for NFT.
+			u128,
+		),
 
-		/// Item was transferred.
-		///
-		/// # Arguments
-		///
-		/// * collection_id - ID of the collection to which the item belongs.
-		/// * item_id - ID of the item transferred.
-		/// * sender - Original owner of the item.
-		/// * recipient - New owner of the item.
-		/// * amount - Amount of tokens that were transferred (always 1 for NFT).
+		/// Item was transferred
 		Transfer(
+			/// Id of collection to which item is belong.
 			CollectionId,
+			/// Id of an item.
 			TokenId,
+			/// Original owner of item.
 			T::CrossAccountId,
+			/// New owner of item.
 			T::CrossAccountId,
+			/// Amount of token pieces transfered. Always 1 for NFT.
 			u128,
 		),
 
-		/// Sponsoring allowance was approved.
-		///
-		/// # Arguments
-		///
-		/// * collection_id - todo:doc flesh out
-		/// * item_id
-		/// * sender
-		/// * spender
-		/// * amount
+		/// Amount pieces of token owned by `sender` was approved for `spender`.
 		Approved(
+			/// Id of collection to which item is belong.
 			CollectionId,
+			/// Id of an item.
 			TokenId,
+			/// Original owner of item.
 			T::CrossAccountId,
+			/// Id for which the approval was granted.
 			T::CrossAccountId,
+			/// Amount of token pieces transfered. Always 1 for NFT.
 			u128,
 		),
 
-		/// Collection property was added or edited.
-		///
-		/// # Arguments
-		///
-		/// * collection_id - ID of the collection, whose property was just set.
-		/// * property_key - Key of the property that was just set.
-		CollectionPropertySet(CollectionId, PropertyKey),
+		/// The colletion property has been added or edited.
+		CollectionPropertySet(
+			/// Id of collection to which property has been set.
+			CollectionId,
+			/// The property that was set.
+			PropertyKey,
+		),
 
-		/// Collection property was deleted.
-		///
-		/// # Arguments
-		///
-		/// * collection_id - ID of the collection, whose property was just deleted.
-		/// * property_key - Key of the property that was just deleted.
-		CollectionPropertyDeleted(CollectionId, PropertyKey),
+		/// The property has been deleted.
+		CollectionPropertyDeleted(
+			/// Id of collection to which property has been deleted.
+			CollectionId,
+			/// The property that was deleted.
+			PropertyKey,
+		),
 
-		/// Item property was added or edited.
-		///
-		/// # Arguments
-		///
-		/// * collection_id - ID of the collection, whose token's property was just set.
-		/// * item_id - ID of the item, whose property was just set.
-		/// * property_key - Key of the property that was just set.
-		TokenPropertySet(CollectionId, TokenId, PropertyKey),
+		/// The token property has been added or edited.
+		TokenPropertySet(
+			/// Identifier of the collection whose token has the property set.
+			CollectionId,
+			/// The token for which the property was set.
+			TokenId,
+			/// The property that was set.
+			PropertyKey,
+		),
 
-		/// Item property was deleted.
-		///
-		/// # Arguments
-		///
-		/// * collection_id - ID of the collection, whose token's property was just deleted.
-		/// * item_id - ID of the item, whose property was just deleted.
-		/// * property_key - Key of the property that was just deleted.
-		TokenPropertyDeleted(CollectionId, TokenId, PropertyKey),
+		/// The token property has been deleted.
+		TokenPropertyDeleted(
+			/// Identifier of the collection whose token has the property deleted.
+			CollectionId,
+			/// The token for which the property was deleted.
+			TokenId,
+			/// The property that was deleted.
+			PropertyKey,
+		),
 
-		/// Token property permission was added or updated for a collection.
-		///
-		/// # Arguments
-		///
-		/// * collection_id - ID of the collection, whose permissions were just set/updated.
-		/// * property_key - Key of the property of the set/updated permission.
-		PropertyPermissionSet(CollectionId, PropertyKey),
+		/// The token property permission of a collection has been set.
+		PropertyPermissionSet(
+			/// ID of collection to which property permission has been set.
+			CollectionId,
+			/// The property permission that was set.
+			PropertyKey,
+		),
 	}
 
 	#[pallet::error]
@@ -482,16 +571,16 @@
 		CollectionIsInternal,
 	}
 
-	/// The number of created collections. Essentially contains the last collection ID.
+	/// Storage of the count of created collections. Essentially contains the last collection ID.
 	#[pallet::storage]
 	pub type CreatedCollectionCount<T> = StorageValue<Value = CollectionId, QueryKind = ValueQuery>;
 
-	/// The number of destroyed collections
+	/// Storage of the count of deleted collections.
 	#[pallet::storage]
 	pub type DestroyedCollectionCount<T> =
 		StorageValue<Value = CollectionId, QueryKind = ValueQuery>;
 
-	/// Collection info
+	/// Storage of collection info.
 	#[pallet::storage]
 	pub type CollectionById<T> = StorageMap<
 		Hasher = Blake2_128Concat,
@@ -500,7 +589,7 @@
 		QueryKind = OptionQuery,
 	>;
 
-	/// Collection properties
+	/// Storage of collection properties.
 	#[pallet::storage]
 	#[pallet::getter(fn collection_properties)]
 	pub type CollectionProperties<T> = StorageMap<
@@ -511,7 +600,7 @@
 		OnEmpty = up_data_structs::CollectionProperties,
 	>;
 
-	/// Token permissions of a collection
+	/// Storage of token property permissions of a collection.
 	#[pallet::storage]
 	#[pallet::getter(fn property_permissions)]
 	pub type CollectionPropertyPermissions<T> = StorageMap<
@@ -521,7 +610,7 @@
 		QueryKind = ValueQuery,
 	>;
 
-	/// Amount of collection admins
+	/// Storage of the amount of collection admins.
 	#[pallet::storage]
 	pub type AdminAmount<T> = StorageMap<
 		Hasher = Blake2_128Concat,
@@ -530,7 +619,7 @@
 		QueryKind = ValueQuery,
 	>;
 
-	/// List of collection admins
+	/// List of collection admins.
 	#[pallet::storage]
 	pub type IsAdmin<T: Config> = StorageNMap<
 		Key = (
@@ -541,7 +630,7 @@
 		QueryKind = ValueQuery,
 	>;
 
-	/// Allowlisted collection users
+	/// Allowlisted collection users.
 	#[pallet::storage]
 	pub type Allowlist<T: Config> = StorageNMap<
 		Key = (
@@ -552,7 +641,7 @@
 		QueryKind = ValueQuery,
 	>;
 
-	/// Not used by code, exists only to provide some types to metadata
+	/// Not used by code, exists only to provide some types to metadata.
 	#[pallet::storage]
 	pub type DummyStorageValue<T: Config> = StorageValue<
 		Value = (
@@ -646,7 +735,9 @@
 }
 
 impl<T: Config> Pallet<T> {
-	/// Ethereum receiver 0x0000000000000000000000000000000000000000 is reserved, and shouldn't own tokens
+	/// Enshure that receiver address is correct.
+	///
+	/// Ethereum receiver 0x0000000000000000000000000000000000000000 is reserved, and shouldn't own tokens.
 	pub fn ensure_correct_receiver(receiver: &T::CrossAccountId) -> DispatchResult {
 		ensure!(
 			&T::CrossAccountId::from_eth(H160([0; 20])) != receiver,
@@ -654,19 +745,27 @@
 		);
 		Ok(())
 	}
+
+	/// Get a vector of collection admins.
 	pub fn adminlist(collection: CollectionId) -> Vec<T::CrossAccountId> {
 		<IsAdmin<T>>::iter_prefix((collection,))
 			.map(|(a, _)| a)
 			.collect()
 	}
+
+	/// Get a vector of users allowed to mint tokens.
 	pub fn allowlist(collection: CollectionId) -> Vec<T::CrossAccountId> {
 		<Allowlist<T>>::iter_prefix((collection,))
 			.map(|(a, _)| a)
 			.collect()
 	}
+
+	/// Is `user` allowed to mint token in `collection`.
 	pub fn allowed(collection: CollectionId, user: T::CrossAccountId) -> bool {
 		<Allowlist<T>>::get((collection, user))
 	}
+
+	/// Get statistics of collections.
 	pub fn collection_stats() -> CollectionStats {
 		let created = <CreatedCollectionCount<T>>::get();
 		let destroyed = <DestroyedCollectionCount<T>>::get();
@@ -677,6 +776,7 @@
 		}
 	}
 
+	/// Get the effective limits for the collection.
 	pub fn effective_collection_limits(collection: CollectionId) -> Option<CollectionLimits> {
 		let collection = <CollectionById<T>>::get(collection);
 		if collection.is_none() {
@@ -710,6 +810,7 @@
 		Some(effective_limits)
 	}
 
+	/// Returns information about the `collection` adapted for rpc.
 	pub fn rpc_collection(collection: CollectionId) -> Option<RpcCollection<T::AccountId>> {
 		let Collection {
 			name,
@@ -785,6 +886,11 @@
 }
 
 impl<T: Config> Pallet<T> {
+	/// Create new collection.
+	///
+	/// * `owner` - The owner of the collection.
+	/// * `data` - Description of the created collection.
+	/// * `is_external` - Marks that collection managet by not "Unique network".
 	pub fn init_collection(
 		owner: T::CrossAccountId,
 		data: CreateCollectionData<T::AccountId>,
@@ -860,7 +966,7 @@
 				),
 			);
 			<T as Config>::Currency::settle(
-				&owner.as_sub(),
+				owner.as_sub(),
 				imbalance,
 				WithdrawReasons::TRANSFER,
 				ExistenceRequirement::KeepAlive,
@@ -885,6 +991,10 @@
 		Ok(id)
 	}
 
+	/// Destroy collection.
+	///
+	/// * `collection` - Collection handler.
+	/// * `sender` - The owner or administrator of the collection.
 	pub fn destroy_collection(
 		collection: CollectionHandle<T>,
 		sender: &T::CrossAccountId,
@@ -913,6 +1023,11 @@
 		Ok(())
 	}
 
+	/// Set collection property.
+	///
+	/// * `collection` - Collection handler.
+	/// * `sender` - The owner or administrator of the collection.
+	/// * `property` - The property to set.
 	pub fn set_collection_property(
 		collection: &CollectionHandle<T>,
 		sender: &T::CrossAccountId,
@@ -931,6 +1046,11 @@
 		Ok(())
 	}
 
+	/// Set scouped collection property.
+	///
+	/// * `collection_id` - ID of the collection for which the property is being set.
+	/// * `scope` - Property scope.
+	/// * `property` - The property to set.
 	pub fn set_scoped_collection_property(
 		collection_id: CollectionId,
 		scope: PropertyScope,
@@ -944,6 +1064,11 @@
 		Ok(())
 	}
 
+	/// Set scouped collection properties.
+	///
+	/// * `collection_id` - ID of the collection for which the properties is being set.
+	/// * `scope` - Property scope.
+	/// * `properties` - The properties to set.
 	pub fn set_scoped_collection_properties(
 		collection_id: CollectionId,
 		scope: PropertyScope,
@@ -957,6 +1082,11 @@
 		Ok(())
 	}
 
+	/// Set collection properties.
+	///
+	/// * `collection` - Collection handler.
+	/// * `sender` - The owner or administrator of the collection.
+	/// * `properties` - The properties to set.
 	#[transactional]
 	pub fn set_collection_properties(
 		collection: &CollectionHandle<T>,
@@ -970,6 +1100,11 @@
 		Ok(())
 	}
 
+	/// Delete collection property.
+	///
+	/// * `collection` - Collection handler.
+	/// * `sender` - The owner or administrator of the collection.
+	/// * `property` - The property to delete.
 	pub fn delete_collection_property(
 		collection: &CollectionHandle<T>,
 		sender: &T::CrossAccountId,
@@ -990,6 +1125,11 @@
 		Ok(())
 	}
 
+	/// Delete collection properties.
+	///
+	/// * `collection` - Collection handler.
+	/// * `sender` - The owner or administrator of the collection.
+	/// * `properties` - The properties to delete.
 	#[transactional]
 	pub fn delete_collection_properties(
 		collection: &CollectionHandle<T>,
@@ -1003,7 +1143,12 @@
 		Ok(())
 	}
 
-	// For migrations
+	/// Set collection propetry permission without any checks.
+	///
+	/// Used for migrations.
+	///
+	/// * `collection` - Collection handler.
+	/// * `property_permissions` - Property permissions.
 	pub fn set_property_permission_unchecked(
 		collection: CollectionId,
 		property_permission: PropertyKeyPermission,
@@ -1015,6 +1160,11 @@
 		Ok(())
 	}
 
+	/// Set collection property permission.
+	///
+	/// * `collection` - Collection handler.
+	/// * `sender` - The owner or administrator of the collection.
+	/// * `property_permission` - Property permission.
 	pub fn set_property_permission(
 		collection: &CollectionHandle<T>,
 		sender: &T::CrossAccountId,
@@ -1045,6 +1195,11 @@
 		Ok(())
 	}
 
+	/// Set token property permission.
+	///
+	/// * `collection` - Collection handler.
+	/// * `sender` - The owner or administrator of the collection.
+	/// * `property_permissions` - Property permissions.
 	#[transactional]
 	pub fn set_token_property_permissions(
 		collection: &CollectionHandle<T>,
@@ -1058,6 +1213,7 @@
 		Ok(())
 	}
 
+	/// Get collection property.
 	pub fn get_collection_property(
 		collection_id: CollectionId,
 		key: &PropertyKey,
@@ -1065,6 +1221,7 @@
 		Self::collection_properties(collection_id).get(key).cloned()
 	}
 
+	/// Convert byte vector to property key vector.
 	pub fn bytes_keys_to_property_keys(
 		keys: Vec<Vec<u8>>,
 	) -> Result<Vec<PropertyKey>, DispatchError> {
@@ -1076,6 +1233,7 @@
 			.collect::<Result<Vec<PropertyKey>, DispatchError>>()
 	}
 
+	/// Get properties according to given keys.
 	pub fn filter_collection_properties(
 		collection_id: CollectionId,
 		keys: Option<Vec<PropertyKey>>,
@@ -1103,6 +1261,7 @@
 		Ok(properties)
 	}
 
+	/// Get property permissions according to given keys.
 	pub fn filter_property_permissions(
 		collection_id: CollectionId,
 		keys: Option<Vec<PropertyKey>>,
@@ -1132,6 +1291,7 @@
 		Ok(key_permissions)
 	}
 
+	/// Toggle `user` participation in the `collection`'s allow list.
 	pub fn toggle_allowlist(
 		collection: &CollectionHandle<T>,
 		sender: &T::CrossAccountId,
@@ -1151,6 +1311,7 @@
 		Ok(())
 	}
 
+	/// Toggle `user` participation in the `collection`'s admin list.
 	pub fn toggle_admin(
 		collection: &CollectionHandle<T>,
 		sender: &T::CrossAccountId,
@@ -1186,6 +1347,7 @@
 		Ok(())
 	}
 
+	/// Merge set fields from `new_limit` to `old_limit`.
 	pub fn clamp_limits(
 		mode: CollectionMode,
 		old_limit: &CollectionLimits,
@@ -1231,20 +1393,22 @@
 		Ok(new_limit)
 	}
 
+	/// Merge set fields from `new_permission` to `old_permission`.
 	pub fn clamp_permissions(
 		_mode: CollectionMode,
-		old_limit: &CollectionPermissions,
-		mut new_limit: CollectionPermissions,
+		old_permission: &CollectionPermissions,
+		mut new_permission: CollectionPermissions,
 	) -> Result<CollectionPermissions, DispatchError> {
-		limit_default_clone!(old_limit, new_limit,
+		limit_default_clone!(old_permission, new_permission,
 			access => {},
 			mint_mode => {},
 			nesting => { /* todo check for permissive, if only it gets out of benchmarks */ },
 		);
-		Ok(new_limit)
+		Ok(new_permission)
 	}
 }
 
+/// Indicates unsupported methods by returning [Error::UnsupportedOperation].
 #[macro_export]
 macro_rules! unsupported {
 	() => {
@@ -1252,32 +1416,72 @@
 	};
 }
 
-/// Worst cases
+/// Return weights for various worst-case operations.
 pub trait CommonWeightInfo<CrossAccountId> {
+	/// Weight of item creation.
 	fn create_item() -> Weight;
+
+	/// Weight of items creation.
 	fn create_multiple_items(amount: &[CreateItemData]) -> Weight;
+
+	/// Weight of items creation.
 	fn create_multiple_items_ex(cost: &CreateItemExData<CrossAccountId>) -> Weight;
+
+	/// The weight of the burning item.
 	fn burn_item() -> Weight;
+
+	/// Property setting weight.
+	///
+	/// * `amount`- The number of properties to set.
 	fn set_collection_properties(amount: u32) -> Weight;
+
+	/// Collection property deletion weight.
+	///
+	/// * `amount`- The number of properties to set.
 	fn delete_collection_properties(amount: u32) -> Weight;
+
+	/// Token property setting weight.
+	///
+	/// * `amount`- The number of properties to set.
 	fn set_token_properties(amount: u32) -> Weight;
+
+	/// Token property deletion weight.
+	///
+	/// * `amount`- The number of properties to delete.
 	fn delete_token_properties(amount: u32) -> Weight;
+
+	/// Token property permissions set weight.
+	///
+	/// * `amount`- The number of property permissions to set.
 	fn set_token_property_permissions(amount: u32) -> Weight;
+
+	/// Transfer price of the token or its parts.
 	fn transfer() -> Weight;
+
+	/// The price of setting the permission of the operation from another user.
 	fn approve() -> Weight;
+
+	/// Transfer price from another user.
 	fn transfer_from() -> Weight;
+
+	/// The price of burning a token from another user.
 	fn burn_from() -> Weight;
 
 	/// Differs from burn_item in case of Fungible and Refungible, as it should burn
-	/// whole users's balance
+	/// whole users's balance.
 	///
-	/// This method shouldn't be used directly, as it doesn't count breadth price, use `burn_recursively` instead
+	/// This method shouldn't be used directly, as it doesn't count breadth price, use [burn_recursively](CommonWeightInfo::burn_recursively) instead
 	fn burn_recursively_self_raw() -> Weight;
-	/// Cost of iterating over `amount` children while burning, without counting child burning itself
+
+	/// Cost of iterating over `amount` children while burning, without counting child burning itself.
 	///
-	/// This method shouldn't be used directly, as it doesn't count depth price, use `burn_recursively` instead
+	/// This method shouldn't be used directly, as it doesn't count depth price, use [burn_recursively](CommonWeightInfo::burn_recursively) instead
 	fn burn_recursively_breadth_raw(amount: u32) -> Weight;
 
+	/// The price of recursive burning a token.
+	///
+	/// `max_selfs` - The maximum burning weight of the token itself.
+	/// `max_breadth` - The maximum number of nested tokens to burn.
 	fn burn_recursively(max_selfs: u32, max_breadth: u32) -> Weight {
 		Self::burn_recursively_self_raw()
 			.saturating_mul(max_selfs.max(1) as u64)
@@ -1285,11 +1489,23 @@
 	}
 }
 
+/// Weight info extension trait for refungible pallet.
 pub trait RefungibleExtensionsWeightInfo {
+	/// Weight of token repartition.
 	fn repartition() -> Weight;
 }
 
+/// Common collection operations.
+///
+/// It wraps methods in Fungible, Nonfungible and Refungible pallets
+/// and adds weight info.
 pub trait CommonCollectionOperations<T: Config> {
+	/// Create token.
+	///
+	/// * `sender` - The user who mint the token and pays for the transaction.
+	/// * `to` - The user who will own the token.
+	/// * `data` - Token data.
+	/// * `nesting_budget` - A budget that can be spent on nesting tokens.
 	fn create_item(
 		&self,
 		sender: T::CrossAccountId,
@@ -1297,6 +1513,13 @@
 		data: CreateItemData,
 		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
+
+	/// Create multiple tokens.
+	///
+	/// * `sender` - The user who mint the token and pays for the transaction.
+	/// * `to` - The user who will own the token.
+	/// * `data` - Token data.
+	/// * `nesting_budget` - A budget that can be spent on nesting tokens.
 	fn create_multiple_items(
 		&self,
 		sender: T::CrossAccountId,
@@ -1304,18 +1527,38 @@
 		data: Vec<CreateItemData>,
 		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
+
+	/// Create multiple tokens.
+	///
+	/// * `sender` - The user who mint the token and pays for the transaction.
+	/// * `to` - The user who will own the token.
+	/// * `data` - Token data.
+	/// * `nesting_budget` - A budget that can be spent on nesting tokens.
 	fn create_multiple_items_ex(
 		&self,
 		sender: T::CrossAccountId,
 		data: CreateItemExData<T::CrossAccountId>,
 		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
+
+	/// Burn token.
+	///
+	/// * `sender` - The user who owns the token.
+	/// * `token` - Token id that will burned.
+	/// * `amount` - The number of parts of the token that will be burned.
 	fn burn_item(
 		&self,
 		sender: T::CrossAccountId,
 		token: TokenId,
 		amount: u128,
 	) -> DispatchResultWithPostInfo;
+
+	/// Burn token and all nested tokens recursievly.
+	///
+	/// * `sender` - The user who owns the token.
+	/// * `token` - Token id that will burned.
+	/// * `self_budget` - The budget that can be spent on burning tokens.
+	/// * `breadth_budget` - The budget that can be spent on burning nested tokens.
 	fn burn_item_recursively(
 		&self,
 		sender: T::CrossAccountId,
@@ -1323,43 +1566,95 @@
 		self_budget: &dyn Budget,
 		breadth_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
+
+	/// Set collection properties.
+	///
+	/// * `sender` - Must be either the owner of the collection or its admin.
+	/// * `properties` - Properties to be set.
 	fn set_collection_properties(
 		&self,
 		sender: T::CrossAccountId,
 		properties: Vec<Property>,
 	) -> DispatchResultWithPostInfo;
+
+	/// Delete collection properties.
+	///
+	/// * `sender` - Must be either the owner of the collection or its admin.
+	/// * `properties` - The properties to be removed.
 	fn delete_collection_properties(
 		&self,
 		sender: &T::CrossAccountId,
 		property_keys: Vec<PropertyKey>,
 	) -> DispatchResultWithPostInfo;
+
+	/// Set token properties.
+	///
+	/// The appropriate [`PropertyPermission`] for the token property
+	/// must be set with [`Self::set_token_property_permissions`].
+	///
+	/// * `sender` - Must be either the owner of the token or its admin.
+	/// * `token_id` - The token for which the properties are being set.
+	/// * `properties` - Properties to be set.
+	/// * `budget` - Budget for setting properties.
 	fn set_token_properties(
 		&self,
 		sender: T::CrossAccountId,
 		token_id: TokenId,
-		property: Vec<Property>,
-		nesting_budget: &dyn Budget,
+		properties: Vec<Property>,
+		budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
+
+	/// Remove token properties.
+	///
+	/// The appropriate [`PropertyPermission`] for the token property
+	/// must be set with [`Self::set_token_property_permissions`].
+	///
+	/// * `sender` - Must be either the owner of the token or its admin.
+	/// * `token_id` - The token for which the properties are being remove.
+	/// * `property_keys` - Keys to remove corresponding properties.
+	/// * `budget` - Budget for removing properties.
 	fn delete_token_properties(
 		&self,
 		sender: T::CrossAccountId,
 		token_id: TokenId,
 		property_keys: Vec<PropertyKey>,
-		nesting_budget: &dyn Budget,
+		budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
+
+	/// Set token property permissions.
+	///
+	/// * `sender` - Must be either the owner of the token or its admin.
+	/// * `token_id` - The token for which the properties are being set.
+	/// * `properties` - Properties to be set.
+	/// * `budget` - Budget for setting properties.
 	fn set_token_property_permissions(
 		&self,
 		sender: &T::CrossAccountId,
 		property_permissions: Vec<PropertyKeyPermission>,
 	) -> DispatchResultWithPostInfo;
+
+	/// Transfer amount of token pieces.
+	///
+	/// * `sender` - Donor user.
+	/// * `to` - Recepient user.
+	/// * `token` - The token of which parts are being sent.
+	/// * `amount` - The number of parts of the token that will be transferred.
+	/// * `budget` - The maximum budget that can be spent on the transfer.
 	fn transfer(
 		&self,
 		sender: T::CrossAccountId,
 		to: T::CrossAccountId,
 		token: TokenId,
 		amount: u128,
-		nesting_budget: &dyn Budget,
+		budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
+
+	/// Grant access to another account to transfer parts of the token owned by the calling user via [Self::transfer_from].
+	///
+	/// * `sender` - The user who grants access to the token.
+	/// * `spender` - The user to whom the rights are granted.
+	/// * `token` - The token to which access is granted.
+	/// * `amount` - The amount of pieces that another user can dispose of.
 	fn approve(
 		&self,
 		sender: T::CrossAccountId,
@@ -1367,6 +1662,17 @@
 		token: TokenId,
 		amount: u128,
 	) -> DispatchResultWithPostInfo;
+
+	/// Send parts of a token owned by another user.
+	///
+	/// Before calling this method, you must grant rights to the calling user via [`Self::approve`].
+	///
+	/// * `sender` - The user who must have access to the token (see [`Self::approve`]).
+	/// * `from` - The user who owns the token.
+	/// * `to` - Recepient user.
+	/// * `token` - The token of which parts are being sent.
+	/// * `amount` - The number of parts of the token that will be transferred.
+	/// * `budget` - The maximum budget that can be spent on the transfer.
 	fn transfer_from(
 		&self,
 		sender: T::CrossAccountId,
@@ -1374,67 +1680,145 @@
 		to: T::CrossAccountId,
 		token: TokenId,
 		amount: u128,
-		nesting_budget: &dyn Budget,
+		budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
+
+	/// Burn parts of a token owned by another user.
+	///
+	/// Before calling this method, you must grant rights to the calling user via [`Self::approve`].
+	///
+	/// * `sender` - The user who must have access to the token (see [`Self::approve`]).
+	/// * `from` - The user who owns the token.
+	/// * `token` - The token of which parts are being sent.
+	/// * `amount` - The number of parts of the token that will be transferred.
+	/// * `budget` - The maximum budget that can be spent on the burn.
 	fn burn_from(
 		&self,
 		sender: T::CrossAccountId,
 		from: T::CrossAccountId,
 		token: TokenId,
 		amount: u128,
-		nesting_budget: &dyn Budget,
+		budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
 
+	/// Check permission to nest token.
+	///
+	/// * `sender` - The user who initiated the check.
+	/// * `from` - The token that is checked for embedding.
+	/// * `under` - Token under which to check.
+	/// * `budget` - The maximum budget that can be spent on the check.
 	fn check_nesting(
 		&self,
 		sender: T::CrossAccountId,
 		from: (CollectionId, TokenId),
 		under: TokenId,
-		nesting_budget: &dyn Budget,
+		budget: &dyn Budget,
 	) -> DispatchResult;
 
+	/// Nest one token into another.
+	///
+	/// * `under` - Token holder.
+	/// * `to_nest` - Nested token.
 	fn nest(&self, under: TokenId, to_nest: (CollectionId, TokenId));
 
+	/// Unnest token.
+	///
+	/// * `under` - Token holder.
+	/// * `to_nest` - Token to unnest.
 	fn unnest(&self, under: TokenId, to_nest: (CollectionId, TokenId));
 
+	/// Get all user tokens.
+	///
+	/// * `account` - Account for which you need to get tokens.
 	fn account_tokens(&self, account: T::CrossAccountId) -> Vec<TokenId>;
+
+	/// Get all the tokens in the collection.
 	fn collection_tokens(&self) -> Vec<TokenId>;
+
+	/// Check if the token exists.
+	///
+	/// * `token` - Id token to check.
 	fn token_exists(&self, token: TokenId) -> bool;
+
+	/// Get the id of the last minted token.
 	fn last_token_id(&self) -> TokenId;
 
+	/// Get the owner of the token.
+	///
+	/// * `token` - The token for which you need to find out the owner.
 	fn token_owner(&self, token: TokenId) -> Option<T::CrossAccountId>;
+
+	/// Returns 10 tokens owners in no particular order.
+	///
+	/// * `token` - The token for which you need to find out the owners.
+	fn token_owners(&self, token: TokenId) -> Vec<T::CrossAccountId>;
+
+	/// Get the value of the token property by key.
+	///
+	/// * `token` - Token with the property to get.
+	/// * `key` - Property name.
 	fn token_property(&self, token_id: TokenId, key: &PropertyKey) -> Option<PropertyValue>;
-	fn token_properties(&self, token_id: TokenId, keys: Option<Vec<PropertyKey>>) -> Vec<Property>;
+
+	/// Get a set of token properties by key vector.
+	///
+	/// * `token` - Token with the property to get.
+	/// * `keys` - Vector of property keys. If this parameter is [None](sp_std::result::Result),
+	/// then all properties are returned.
+	fn token_properties(&self, token: TokenId, keys: Option<Vec<PropertyKey>>) -> Vec<Property>;
+
 	/// Amount of unique collection tokens
 	fn total_supply(&self) -> u32;
-	/// Amount of different tokens account has (Applicable to nonfungible/refungible)
+
+	/// Amount of different tokens account has.
+	///
+	/// * `account` - The account for which need to get the balance.
 	fn account_balance(&self, account: T::CrossAccountId) -> u32;
-	/// Amount of specific token account have (Applicable to fungible/refungible)
+
+	/// Amount of specific token account have.
 	fn balance(&self, account: T::CrossAccountId, token: TokenId) -> u128;
+
 	/// Amount of token pieces
 	fn total_pieces(&self, token: TokenId) -> Option<u128>;
+
+	/// Get the number of parts of the token that a trusted user can manage.
+	///
+	/// * `sender` - Trusted user.
+	/// * `spender` - Owner of the token.
+	/// * `token` - The token for which to get the value.
 	fn allowance(
 		&self,
 		sender: T::CrossAccountId,
 		spender: T::CrossAccountId,
 		token: TokenId,
 	) -> u128;
+
+	/// Get extension for RFT collection.
 	fn refungible_extensions(&self) -> Option<&dyn RefungibleExtensions<T>>;
 }
 
+/// Extension for RFT collection.
 pub trait RefungibleExtensions<T>
 where
 	T: Config,
 {
+	/// Change the number of parts of the token.
+	///
+	/// When the value changes down, this function is equivalent to burning parts of the token.
+	///
+	/// * `sender` - The user calling the repartition operation. Must be the owner of the token.
+	/// * `token` - The token for which you want to change the number of parts.
+	/// * `amount` - The new value of the parts of the token.
 	fn repartition(
 		&self,
-		owner: &T::CrossAccountId,
+		sender: &T::CrossAccountId,
 		token: TokenId,
 		amount: u128,
 	) -> DispatchResultWithPostInfo;
 }
 
-// Flexible enough for implementing CommonCollectionOperations
+/// Merge [`DispatchResult`] with [`Weight`] into [`DispatchResultWithPostInfo`].
+///
+/// Used for [`CommonCollectionOperations`] implementations and flexible enough to do so.
 pub fn with_weight(res: DispatchResult, weight: Weight) -> DispatchResultWithPostInfo {
 	let post_info = PostDispatchInfo {
 		actual_weight: Some(weight),
modifiedpallets/evm-contract-helpers/src/stubs/ContractHelpers.rawdiffbeforeafterboth

binary blob — no preview

addedpallets/fungible/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/pallets/fungible/CHANGELOG.md
@@ -0,0 +1,13 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.1] - 2022-07-14
+
+### Added
+
+ - Implementation of RPC method `token_owners` returning 10 owners in no particular order.
+    This was an internal request to improve the web interface and support fractionalization event. 
+    
+ 
+ 
\ No newline at end of file
modifiedpallets/fungible/Cargo.tomldiffbeforeafterboth
--- a/pallets/fungible/Cargo.toml
+++ b/pallets/fungible/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pallet-fungible"
-version = "0.1.0"
+version = "0.1.1"
 license = "GPLv3"
 edition = "2021"
modifiedpallets/fungible/src/common.rsdiffbeforeafterboth
--- a/pallets/fungible/src/common.rs
+++ b/pallets/fungible/src/common.rs
@@ -105,6 +105,8 @@
 	}
 }
 
+/// Implementation of `CommonCollectionOperations` for `FungibleHandle`. It wraps FungibleHandle Pallete
+/// methods and adds weight info.
 impl<T: Config> CommonCollectionOperations<T> for FungibleHandle<T> {
 	fn create_item(
 		&self,
@@ -360,6 +362,11 @@
 		None
 	}
 
+	/// Returns 10 tokens owners in no particular order.
+	fn token_owners(&self, token: TokenId) -> Vec<T::CrossAccountId> {
+		<Pallet<T>>::token_owners(self.id, token).unwrap_or_default()
+	}
+
 	fn token_property(&self, _token_id: TokenId, _key: &PropertyKey) -> Option<PropertyValue> {
 		None
 	}
modifiedpallets/fungible/src/erc.rsdiffbeforeafterboth
--- a/pallets/fungible/src/erc.rs
+++ b/pallets/fungible/src/erc.rs
@@ -14,6 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
+//! ERC-20 standart support implementation.
+
 use core::char::{REPLACEMENT_CHARACTER, decode_utf16};
 use core::convert::TryInto;
 use evm_coder::{ToLog, execution::*, generate_stubgen, solidity_interface, types::*, weight};
modifiedpallets/fungible/src/lib.rsdiffbeforeafterboth
--- a/pallets/fungible/src/lib.rs
+++ b/pallets/fungible/src/lib.rs
@@ -14,6 +14,68 @@
 // You should have received a copy of the GNU General Public License
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
+//! # Fungible Pallet
+//!
+//! The Fungible pallet provides functionality for dealing with fungible assets.
+//!
+//! - [`CreateItemData`]
+//! - [`Config`]
+//! - [`FungibleHandle`]
+//! - [`Pallet`]
+//! - [`TotalSupply`]
+//! - [`Balance`]
+//! - [`Allowance`]
+//! - [`Error`]
+//!
+//! ## Fungible tokens
+//!
+//! Fungible tokens or assets are divisible and non-unique. For instance,
+//! fiat currencies like the dollar are fungible: A $1 bill
+//! in New York City has the same value as a $1 bill in Miami.
+//! A fungible token can also be a cryptocurrency like Bitcoin: 1 BTC is worth 1 BTC,
+//! no matter where it is issued. Thus, the fungibility refers to a specific currency’s
+//! ability to maintain one standard value. As well, it needs to have uniform acceptance.
+//! This means that a currency’s history should not be able to affect its value,
+//! and this is due to the fact that each piece that is a part of the currency is equal
+//! in value when compared to every other piece of that exact same currency.
+//! In the world of cryptocurrencies, this is essentially a coin or a token
+//! that can be replaced by another identical coin or token, and they are
+//! both mutually interchangeable. A popular implementation of fungible tokens is
+//! the ERC-20 token standard.
+//!
+//! ### ERC-20
+//!
+//! The [ERC-20](https://ethereum.org/en/developers/docs/standards/tokens/erc-20/) (Ethereum Request for Comments 20), proposed by Fabian Vogelsteller in November 2015,
+//! is a Token Standard that implements an API for tokens within Smart Contracts.
+//!
+//! Example functionalities ERC-20 provides:
+//!
+//! * transfer tokens from one account to another
+//! * get the current token balance of an account
+//! * get the total supply of the token available on the network
+//! * approve whether an amount of token from an account can be spent by a third-party account
+//!
+//! ## Overview
+//!
+//! The module provides functionality for asset management of fungible asset, supports ERC-20 standart, includes:
+//!
+//! * Asset Issuance
+//! * Asset Transferal
+//! * Asset Destruction
+//! * Delegated Asset Transfers
+//!
+//! **NOTE:** The created fungible asset always has `token_id` = 0.
+//! So `tokenA` and `tokenB` will have different `collection_id`.
+//!
+//! ### Implementations
+//!
+//! The Fungible pallet provides implementations for the following traits.
+//!
+//! - [`WithRecorder`](pallet_evm_coder_substrate::WithRecorder): Trait for EVM support
+//! - [`CommonCollectionOperations`](pallet_common::CommonCollectionOperations): Functions for dealing with collections
+//!	- [`CommonWeightInfo`](pallet_common::CommonWeightInfo): Functions for retrieval of transaction weight
+//! - [`CommonEvmHandler`](pallet_common::erc::CommonEvmHandler): Function for handling EVM runtime calls
+
 #![cfg_attr(not(feature = "std"), no_std)]
 
 use core::ops::Deref;
@@ -33,7 +95,7 @@
 use pallet_evm_coder_substrate::WithRecorder;
 use sp_core::H160;
 use sp_runtime::{ArithmeticError, DispatchError, DispatchResult};
-use sp_std::{collections::btree_map::BTreeMap};
+use sp_std::{collections::btree_map::BTreeMap, vec::Vec};
 
 pub use pallet::*;
 
@@ -44,7 +106,6 @@
 pub mod erc;
 pub mod weights;
 
-/// todo:doc?
 pub type CreateItemData<T> = (<T as pallet_evm::account::Config>::CrossAccountId, u128);
 pub(crate) type SelfWeightOf<T> = <T as Config>::WeightInfo;
 
@@ -58,7 +119,7 @@
 	pub enum Error<T> {
 		/// Not Fungible item data used to mint in Fungible collection.
 		NotFungibleDataUsedToMintFungibleCollectionToken,
-		/// Not default id passed as TokenId argument.
+		/// Fungible tokens hold no ID, and the default value of TokenId for Fungible collection is 0.
 		FungibleItemsHaveNoId,
 		/// Tried to set data for fungible item.
 		FungibleItemsDontHaveData,
@@ -95,7 +156,7 @@
 		QueryKind = ValueQuery,
 	>;
 
-	/// todo:doc
+	/// Storage for assets delegated to a limited extent to other users.
 	#[pallet::storage]
 	pub type Allowance<T: Config> = StorageNMap<
 		Key = (
@@ -108,14 +169,22 @@
 	>;
 }
 
+/// Wrapper around untyped collection handle, asserting inner collection is of fungible type.
+/// Required for interaction with Fungible collections, type safety and implementation [`solidity_interface`][`evm_coder::solidity_interface`].
 pub struct FungibleHandle<T: Config>(pallet_common::CollectionHandle<T>);
+
+/// Implementation of methods required for dispatching during runtime.
 impl<T: Config> FungibleHandle<T> {
+	/// Casts [`CollectionHandle`][`pallet_common::CollectionHandle`] into [`FungibleHandle`].
 	pub fn cast(inner: pallet_common::CollectionHandle<T>) -> Self {
 		Self(inner)
 	}
+
+	/// Casts [`FungibleHandle`] into [`CollectionHandle`][`pallet_common::CollectionHandle`].
 	pub fn into_inner(self) -> pallet_common::CollectionHandle<T> {
 		self.0
 	}
+	/// Returns a mutable reference to the internal [`CollectionHandle`][`pallet_common::CollectionHandle`].
 	pub fn common_mut(&mut self) -> &mut pallet_common::CollectionHandle<T> {
 		&mut self.0
 	}
@@ -136,13 +205,17 @@
 	}
 }
 
+/// Pallet implementation for fungible assets
 impl<T: Config> Pallet<T> {
+	/// Initializes the collection. Returns [CollectionId] on success, [DispatchError] otherwise.
 	pub fn init_collection(
 		owner: T::CrossAccountId,
 		data: CreateCollectionData<T::AccountId>,
 	) -> Result<CollectionId, DispatchError> {
 		<PalletCommon<T>>::init_collection(owner, data, false)
 	}
+
+	/// Destroys a collection.
 	pub fn destroy_collection(
 		collection: FungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -163,10 +236,14 @@
 		Ok(())
 	}
 
+	///Checks if collection has tokens. Return `true` if it has.
 	fn collection_has_tokens(collection_id: CollectionId) -> bool {
 		<TotalSupply<T>>::get(collection_id) != 0
 	}
 
+	/// Burns the specified amount of the token. If the token balance
+	/// or total supply is less than the given value,
+	/// it will return [DispatchError].
 	pub fn burn(
 		collection: &FungibleHandle<T>,
 		owner: &T::CrossAccountId,
@@ -211,6 +288,13 @@
 		Ok(())
 	}
 
+	/// Transfers the specified amount of tokens. Will check that
+	/// the transfer is allowed for the token.
+	///
+	/// - `from`: Owner of tokens to transfer.
+	/// - `to`: Recepient of transfered tokens.
+	/// - `amount`: Amount of tokens to transfer.
+	/// - `collection`: Collection that contains the token
 	pub fn transfer(
 		collection: &FungibleHandle<T>,
 		from: &T::CrossAccountId,
@@ -281,6 +365,8 @@
 		Ok(())
 	}
 
+	/// Minting tokens for multiple IDs.
+	/// See [`create_item`][`Pallet::create_item`] for more details.
 	pub fn create_multiple_items(
 		collection: &FungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -382,6 +468,12 @@
 		));
 	}
 
+	/// Set allowance for the spender to `transfer` or `burn` owner's tokens.
+	///
+	/// - `collection`: Collection that contains the token
+	/// - `owner`: Owner of tokens that sets the allowance.
+	/// - `spender`: Recipient of the allowance rights.
+	/// - `amount`: Amount of tokens the spender is allowed to `transfer` or `burn`.
 	pub fn set_allowance(
 		collection: &FungibleHandle<T>,
 		owner: &T::CrossAccountId,
@@ -406,6 +498,13 @@
 		Ok(())
 	}
 
+	/// Checks if a non-owner has (enough) allowance from the owner to perform operations on the tokens.
+	/// Returns the expected remaining allowance - it should be set manually if the transaction proceeds.
+	///
+	/// - `collection`: Collection that contains the token.
+	/// - `spender`: CrossAccountId who has the allowance rights.
+	/// - `from`: The owner of the tokens who sets the allowance.
+	/// - `amount`: Amount of tokens by which the allowance sholud be reduced.
 	fn check_allowed(
 		collection: &FungibleHandle<T>,
 		spender: &T::CrossAccountId,
@@ -445,6 +544,11 @@
 		Ok(allowance)
 	}
 
+	/// Transfer fungible tokens from one account to another.
+	/// Same as the [`transfer`][`Pallet::transfer`] but spender doesn't needs to be an owner of the token pieces.
+	/// The owner should set allowance for the spender to transfer pieces.
+	///	See [`set_allowance`][`Pallet::set_allowance`] for more details.
+
 	pub fn transfer_from(
 		collection: &FungibleHandle<T>,
 		spender: &T::CrossAccountId,
@@ -464,6 +568,11 @@
 		Ok(())
 	}
 
+	/// Burn fungible tokens from the account.
+	///
+	/// Same as the [`burn`][`Pallet::burn`] but spender doesn't need to be an owner of the tokens. The `from` should
+	/// set allowance for the spender to burn tokens.
+	/// See [`set_allowance`][`Pallet::set_allowance`] for more details.
 	pub fn burn_from(
 		collection: &FungibleHandle<T>,
 		spender: &T::CrossAccountId,
@@ -482,7 +591,13 @@
 		Ok(())
 	}
 
-	/// Delegated to `create_multiple_items`
+	///	Creates fungible token.
+	///
+	/// The sender should be the owner/admin of the collection or collection should be configured
+	/// to allow public minting.
+	///
+	/// - `data`: Contains user who will become the owners of the tokens and amount
+	///   of tokens he will receive.
 	pub fn create_item(
 		collection: &FungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -496,4 +611,26 @@
 			nesting_budget,
 		)
 	}
+
+	/// Returns 10 tokens owners in no particular order
+	///
+	/// There is no direct way to get token holders in ascending order,
+	/// since `iter_prefix` returns values in no particular order.
+	/// Therefore, getting the 10 largest holders with a large value of holders
+	/// can lead to impact memory allocation + sorting with  `n * log (n)`.
+	pub fn token_owners(
+		collection: CollectionId,
+		_token: TokenId,
+	) -> Option<Vec<T::CrossAccountId>> {
+		let res: Vec<T::CrossAccountId> = <Balance<T>>::iter_prefix((collection,))
+			.map(|(owner, _amount)| owner)
+			.take(10)
+			.collect();
+
+		if res.is_empty() {
+			None
+		} else {
+			Some(res)
+		}
+	}
 }
modifiedpallets/fungible/src/stubs/UniqueFungible.rawdiffbeforeafterboth

binary blob — no preview

modifiedpallets/fungible/src/stubs/UniqueFungible.soldiffbeforeafterboth
--- a/pallets/fungible/src/stubs/UniqueFungible.sol
+++ b/pallets/fungible/src/stubs/UniqueFungible.sol
@@ -43,6 +43,233 @@
 	}
 }
 
+// Selector: 7d9262e6
+contract Collection is Dummy, ERC165 {
+	// Set collection property.
+	//
+	// @param key Property key.
+	// @param value Propery value.
+	//
+	// Selector: setCollectionProperty(string,bytes) 2f073f66
+	function setCollectionProperty(string memory key, bytes memory value)
+		public
+	{
+		require(false, stub_error);
+		key;
+		value;
+		dummy = 0;
+	}
+
+	// Delete collection property.
+	//
+	// @param key Property key.
+	//
+	// Selector: deleteCollectionProperty(string) 7b7debce
+	function deleteCollectionProperty(string memory key) public {
+		require(false, stub_error);
+		key;
+		dummy = 0;
+	}
+
+	// Get collection property.
+	//
+	// @dev Throws error if key not found.
+	//
+	// @param key Property key.
+	// @return bytes The property corresponding to the key.
+	//
+	// Selector: collectionProperty(string) cf24fd6d
+	function collectionProperty(string memory key)
+		public
+		view
+		returns (bytes memory)
+	{
+		require(false, stub_error);
+		key;
+		dummy;
+		return hex"";
+	}
+
+	// Set the sponsor of the collection.
+	//
+	// @dev In order for sponsorship to work, it must be confirmed on behalf of the sponsor.
+	//
+	// @param sponsor Address of the sponsor from whose account funds will be debited for operations with the contract.
+	//
+	// Selector: setCollectionSponsor(address) 7623402e
+	function setCollectionSponsor(address sponsor) public {
+		require(false, stub_error);
+		sponsor;
+		dummy = 0;
+	}
+
+	// Collection sponsorship confirmation.
+	//
+	// @dev After setting the sponsor for the collection, it must be confirmed with this function.
+	//
+	// Selector: confirmCollectionSponsorship() 3c50e97a
+	function confirmCollectionSponsorship() public {
+		require(false, stub_error);
+		dummy = 0;
+	}
+
+	// Set limits for the collection.
+	// @dev Throws error if limit not found.
+	// @param limit Name of the limit. Valid names:
+	// 	"accountTokenOwnershipLimit",
+	// 	"sponsoredDataSize",
+	// 	"sponsoredDataRateLimit",
+	// 	"tokenLimit",
+	// 	"sponsorTransferTimeout",
+	// 	"sponsorApproveTimeout"
+	// @param value Value of the limit.
+	//
+	// Selector: setCollectionLimit(string,uint32) 6a3841db
+	function setCollectionLimit(string memory limit, uint32 value) public {
+		require(false, stub_error);
+		limit;
+		value;
+		dummy = 0;
+	}
+
+	// Set limits for the collection.
+	// @dev Throws error if limit not found.
+	// @param limit Name of the limit. Valid names:
+	// 	"ownerCanTransfer",
+	// 	"ownerCanDestroy",
+	// 	"transfersEnabled"
+	// @param value Value of the limit.
+	//
+	// Selector: setCollectionLimit(string,bool) 993b7fba
+	function setCollectionLimit(string memory limit, bool value) public {
+		require(false, stub_error);
+		limit;
+		value;
+		dummy = 0;
+	}
+
+	// Get contract address.
+	//
+	// Selector: contractAddress() f6b4dfb4
+	function contractAddress() public view returns (address) {
+		require(false, stub_error);
+		dummy;
+		return 0x0000000000000000000000000000000000000000;
+	}
+
+	// Add collection admin by substrate address.
+	// @param new_admin Substrate administrator address.
+	//
+	// Selector: addCollectionAdminSubstrate(uint256) 5730062b
+	function addCollectionAdminSubstrate(uint256 newAdmin) public {
+		require(false, stub_error);
+		newAdmin;
+		dummy = 0;
+	}
+
+	// Remove collection admin by substrate address.
+	// @param admin Substrate administrator address.
+	//
+	// Selector: removeCollectionAdminSubstrate(uint256) 4048fcf9
+	function removeCollectionAdminSubstrate(uint256 admin) public {
+		require(false, stub_error);
+		admin;
+		dummy = 0;
+	}
+
+	// Add collection admin.
+	// @param new_admin Address of the added administrator.
+	//
+	// Selector: addCollectionAdmin(address) 92e462c7
+	function addCollectionAdmin(address newAdmin) public {
+		require(false, stub_error);
+		newAdmin;
+		dummy = 0;
+	}
+
+	// Remove collection admin.
+	//
+	// @param new_admin Address of the removed administrator.
+	//
+	// Selector: removeCollectionAdmin(address) fafd7b42
+	function removeCollectionAdmin(address admin) public {
+		require(false, stub_error);
+		admin;
+		dummy = 0;
+	}
+
+	// Toggle accessibility of collection nesting.
+	//
+	// @param enable If "true" degenerates to nesting: 'Owner' else to nesting: 'Disabled'
+	//
+	// Selector: setCollectionNesting(bool) 112d4586
+	function setCollectionNesting(bool enable) public {
+		require(false, stub_error);
+		enable;
+		dummy = 0;
+	}
+
+	// Toggle accessibility of collection nesting.
+	//
+	// @param enable If "true" degenerates to nesting: {OwnerRestricted: [1, 2, 3]} else to nesting: 'Disabled'
+	// @param collections Addresses of collections that will be available for nesting.
+	//
+	// Selector: setCollectionNesting(bool,address[]) 64872396
+	function setCollectionNesting(bool enable, address[] memory collections)
+		public
+	{
+		require(false, stub_error);
+		enable;
+		collections;
+		dummy = 0;
+	}
+
+	// Set the collection access method.
+	// @param mode Access mode
+	// 	0 for Normal
+	// 	1 for AllowList
+	//
+	// Selector: setCollectionAccess(uint8) 41835d4c
+	function setCollectionAccess(uint8 mode) public {
+		require(false, stub_error);
+		mode;
+		dummy = 0;
+	}
+
+	// Add the user to the allowed list.
+	//
+	// @param user Address of a trusted user.
+	//
+	// Selector: addToCollectionAllowList(address) 67844fe6
+	function addToCollectionAllowList(address user) public {
+		require(false, stub_error);
+		user;
+		dummy = 0;
+	}
+
+	// Remove the user from the allowed list.
+	//
+	// @param user Address of a removed user.
+	//
+	// Selector: removeFromCollectionAllowList(address) 85c51acb
+	function removeFromCollectionAllowList(address user) public {
+		require(false, stub_error);
+		user;
+		dummy = 0;
+	}
+
+	// Switch permission for minting.
+	//
+	// @param mode Enable if "true".
+	//
+	// Selector: setCollectionMintMode(bool) 00018e84
+	function setCollectionMintMode(bool mode) public {
+		require(false, stub_error);
+		mode;
+		dummy = 0;
+	}
+}
+
 // Selector: 942e8b22
 contract ERC20 is Dummy, ERC165, ERC20Events {
 	// Selector: name() 06fdde03
@@ -124,76 +351,6 @@
 		spender;
 		dummy;
 		return 0;
-	}
-}
-
-// Selector: c894dc35
-contract Collection is Dummy, ERC165 {
-	// Selector: setCollectionProperty(string,bytes) 2f073f66
-	function setCollectionProperty(string memory key, bytes memory value)
-		public
-	{
-		require(false, stub_error);
-		key;
-		value;
-		dummy = 0;
-	}
-
-	// Selector: deleteCollectionProperty(string) 7b7debce
-	function deleteCollectionProperty(string memory key) public {
-		require(false, stub_error);
-		key;
-		dummy = 0;
-	}
-
-	// Throws error if key not found
-	//
-	// Selector: collectionProperty(string) cf24fd6d
-	function collectionProperty(string memory key)
-		public
-		view
-		returns (bytes memory)
-	{
-		require(false, stub_error);
-		key;
-		dummy;
-		return hex"";
-	}
-
-	// Selector: ethSetSponsor(address) 8f9af356
-	function ethSetSponsor(address sponsor) public {
-		require(false, stub_error);
-		sponsor;
-		dummy = 0;
-	}
-
-	// Selector: ethConfirmSponsorship() a8580d1a
-	function ethConfirmSponsorship() public {
-		require(false, stub_error);
-		dummy = 0;
-	}
-
-	// Selector: setLimit(string,uint32) 68db30ca
-	function setLimit(string memory limit, uint32 value) public {
-		require(false, stub_error);
-		limit;
-		value;
-		dummy = 0;
-	}
-
-	// Selector: setLimit(string,bool) ea67e4c2
-	function setLimit(string memory limit, bool value) public {
-		require(false, stub_error);
-		limit;
-		value;
-		dummy = 0;
-	}
-
-	// Selector: contractAddress() f6b4dfb4
-	function contractAddress() public view returns (address) {
-		require(false, stub_error);
-		dummy;
-		return 0x0000000000000000000000000000000000000000;
 	}
 }
modifiedpallets/inflation/src/lib.rsdiffbeforeafterboth
--- a/pallets/inflation/src/lib.rs
+++ b/pallets/inflation/src/lib.rs
@@ -14,6 +14,20 @@
 // You should have received a copy of the GNU General Public License
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
+//! # Inflation
+//!
+//! The inflation pallet is designed to increase the number of tokens at certain intervals.
+//! With each iteration, increases the `total_issuance` value for the native token.
+//! Executing an `on_initialize` hook at the beginning of each block, causing inflation to begin.
+//!
+//! ## Interface
+//!
+//! ### Dispatchable Functions
+//!
+//! * `start_inflation` - This method sets the inflation start date. Can be only called once.
+//! Inflation start block can be backdated and will catch up. The method will create Treasury
+//!	account if it does not exist and perform the first inflation deposit.
+
 // #![recursion_limit = "1024"]
 #![cfg_attr(not(feature = "std"), no_std)]
addedpallets/nonfungible/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/pallets/nonfungible/CHANGELOG.md
@@ -0,0 +1,11 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.1] - 2022-07-14
+
+### Added
+
+- Implementation of RPC method `token_owners`.
+   For reasons of compatibility with this pallet, returns only one owner if token exists.
+   This was an internal request to improve the web interface and support fractionalization event. 
\ No newline at end of file
modifiedpallets/nonfungible/Cargo.tomldiffbeforeafterboth
--- a/pallets/nonfungible/Cargo.toml
+++ b/pallets/nonfungible/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pallet-nonfungible"
-version = "0.1.0"
+version = "0.1.1"
 license = "GPLv3"
 edition = "2021"
modifiedpallets/nonfungible/src/benchmarking.rsdiffbeforeafterboth
--- a/pallets/nonfungible/src/benchmarking.rs
+++ b/pallets/nonfungible/src/benchmarking.rs
@@ -183,7 +183,7 @@
 			value: property_value(),
 		}).collect::<Vec<_>>();
 		let item = create_max_item(&collection, &owner, owner.clone())?;
-	}: {<Pallet<T>>::set_token_properties(&collection, &owner, item, props, false, &Unlimited)?}
+	}: {<Pallet<T>>::set_token_properties(&collection, &owner, item, props.into_iter(), false, &Unlimited)?}
 
 	delete_token_properties {
 		let b in 0..MAX_PROPERTIES_PER_ITEM;
@@ -205,7 +205,7 @@
 			value: property_value(),
 		}).collect::<Vec<_>>();
 		let item = create_max_item(&collection, &owner, owner.clone())?;
-		<Pallet<T>>::set_token_properties(&collection, &owner, item, props, false, &Unlimited)?;
+		<Pallet<T>>::set_token_properties(&collection, &owner, item, props.into_iter(), false, &Unlimited)?;
 		let to_delete = (0..b).map(|k| property_key(k as usize)).collect::<Vec<_>>();
-	}: {<Pallet<T>>::delete_token_properties(&collection, &owner, item, to_delete, &Unlimited)?}
+	}: {<Pallet<T>>::delete_token_properties(&collection, &owner, item, to_delete.into_iter(), &Unlimited)?}
 }
modifiedpallets/nonfungible/src/common.rsdiffbeforeafterboth
--- a/pallets/nonfungible/src/common.rs
+++ b/pallets/nonfungible/src/common.rs
@@ -26,7 +26,7 @@
 	weights::WeightInfo as _,
 };
 use sp_runtime::DispatchError;
-use sp_std::vec::Vec;
+use sp_std::{vec::Vec, vec};
 
 use crate::{
 	AccountBalance, Allowance, Config, CreateItemData, Error, NonfungibleHandle, Owned, Pallet,
@@ -133,6 +133,8 @@
 	}
 }
 
+/// Implementation of `CommonCollectionOperations` for `NonfungibleHandle`. It wraps Nonfungible Pallete
+/// methods and adds weight info.
 impl<T: Config> CommonCollectionOperations<T> for NonfungibleHandle<T> {
 	fn create_item(
 		&self,
@@ -420,6 +422,11 @@
 		<TokenData<T>>::get((self.id, token)).map(|t| t.owner)
 	}
 
+	/// Returns token owners.
+	fn token_owners(&self, token: TokenId) -> Vec<T::CrossAccountId> {
+		self.token_owner(token).map_or_else(|| vec![], |t| vec![t])
+	}
+
 	fn token_property(&self, token_id: TokenId, key: &PropertyKey) -> Option<PropertyValue> {
 		<Pallet<T>>::token_properties((self.id, token_id))
 			.get(key)
modifiedpallets/nonfungible/src/erc.rsdiffbeforeafterboth
--- a/pallets/nonfungible/src/erc.rs
+++ b/pallets/nonfungible/src/erc.rs
@@ -14,6 +14,11 @@
 // You should have received a copy of the GNU General Public License
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
+//! # Nonfungible Pallet EVM API
+//!
+//! Provides ERC-721 standart support implementation and EVM API for unique extensions for Nonfungible Pallet.
+//! Method implementations are mostly doing parameter conversion and calling Nonfungible Pallet methods.
+
 extern crate alloc;
 use core::{
 	char::{REPLACEMENT_CHARACTER, decode_utf16},
@@ -40,8 +45,15 @@
 	SelfWeightOf, weights::WeightInfo, TokenProperties,
 };
 
+/// @title A contract that allows to set and delete token properties and change token property permissions.
 #[solidity_interface(name = "TokenProperties")]
 impl<T: Config> NonfungibleHandle<T> {
+	/// @notice Set permissions for token property.
+	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.
+	/// @param key Property key.
+	/// @param is_mutable Permission to mutate property.
+	/// @param collection_admin Permission to mutate property by collection admin if property is mutable.
+	/// @param token_owner Permission to mutate property by token owner if property is mutable.
 	fn set_token_property_permission(
 		&mut self,
 		caller: caller,
@@ -68,6 +80,11 @@
 		.map_err(dispatch_to_evm::<T>)
 	}
 
+	/// @notice Set token property value.
+	/// @dev Throws error if `msg.sender` has no permission to edit the property.
+	/// @param tokenId ID of the token.
+	/// @param key Property key.
+	/// @param value Property value.
 	fn set_property(
 		&mut self,
 		caller: caller,
@@ -96,6 +113,10 @@
 		.map_err(dispatch_to_evm::<T>)
 	}
 
+	/// @notice Delete token property value.
+	/// @dev Throws error if `msg.sender` has no permission to edit the property.
+	/// @param tokenId ID of the token.
+	/// @param key Property key.
 	fn delete_property(&mut self, token_id: uint256, caller: caller, key: string) -> Result<()> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
@@ -111,7 +132,11 @@
 			.map_err(dispatch_to_evm::<T>)
 	}
 
-	/// Throws error if key not found
+	/// @notice Get token property value.
+	/// @dev Throws error if key not found
+	/// @param tokenId ID of the token.
+	/// @param key Property key.
+	/// @return Property value bytes
 	fn property(&self, token_id: uint256, key: string) -> Result<bytes> {
 		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 		let key = <Vec<u8>>::from(key)
@@ -127,6 +152,11 @@
 
 #[derive(ToLog)]
 pub enum ERC721Events {
+	/// @dev This emits when ownership of any NFT changes by any mechanism.
+	///  This event emits when NFTs are created (`from` == 0) and destroyed
+	///  (`to` == 0). Exception: during contract creation, any number of NFTs
+	///  may be created and assigned without emitting Transfer. At the time of
+	///  any transfer, the approved address for that NFT (if any) is reset to none.
 	Transfer {
 		#[indexed]
 		from: address,
@@ -135,6 +165,10 @@
 		#[indexed]
 		token_id: uint256,
 	},
+	/// @dev This emits when the approved address for an NFT is changed or
+	///  reaffirmed. The zero address indicates there is no approved address.
+	///  When a Transfer event emits, this also indicates that the approved
+	///  address for that NFT (if any) is reset to none.
 	Approval {
 		#[indexed]
 		owner: address,
@@ -143,6 +177,8 @@
 		#[indexed]
 		token_id: uint256,
 	},
+	/// @dev This emits when an operator is enabled or disabled for an owner.
+	///  The operator can manage all NFTs of the owner.
 	#[allow(dead_code)]
 	ApprovalForAll {
 		#[indexed]
@@ -159,19 +195,27 @@
 	MintingFinished {},
 }
 
+/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension
+/// @dev See https://eips.ethereum.org/EIPS/eip-721
 #[solidity_interface(name = "ERC721Metadata")]
 impl<T: Config> NonfungibleHandle<T> {
+	/// @notice A descriptive name for a collection of NFTs in this contract
 	fn name(&self) -> Result<string> {
 		Ok(decode_utf16(self.name.iter().copied())
 			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
 			.collect::<string>())
 	}
 
+	/// @notice An abbreviated name for NFTs in this contract
 	fn symbol(&self) -> Result<string> {
 		Ok(string::from_utf8_lossy(&self.token_prefix).into())
 	}
 
-	/// Returns token's const_metadata
+	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
+	/// @dev Throws if `tokenId` is not a valid NFT. URIs are defined in RFC
+	///  3986. The URI may point to a JSON file that conforms to the "ERC721
+	///  Metadata JSON Schema".
+	/// @return token's const_metadata
 	#[solidity(rename_selector = "tokenURI")]
 	fn token_uri(&self, token_id: uint256) -> Result<string> {
 		let key = token_uri_key();
@@ -192,32 +236,53 @@
 	}
 }
 
+/// @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
+/// @dev See https://eips.ethereum.org/EIPS/eip-721
 #[solidity_interface(name = "ERC721Enumerable")]
 impl<T: Config> NonfungibleHandle<T> {
+	/// @notice Enumerate valid NFTs
+	/// @param index A counter less than `totalSupply()`
+	/// @return The token identifier for the `index`th NFT,
+	///  (sort order not specified)
 	fn token_by_index(&self, index: uint256) -> Result<uint256> {
 		Ok(index)
 	}
 
-	/// Not implemented
+	/// @dev Not implemented
 	fn token_of_owner_by_index(&self, _owner: address, _index: uint256) -> Result<uint256> {
 		// TODO: Not implemetable
 		Err("not implemented".into())
 	}
 
+	/// @notice Count NFTs tracked by this contract
+	/// @return A count of valid NFTs tracked by this contract, where each one of
+	///  them has an assigned and queryable owner not equal to the zero address
 	fn total_supply(&self) -> Result<uint256> {
 		self.consume_store_reads(1)?;
 		Ok(<Pallet<T>>::total_supply(self).into())
 	}
 }
 
+/// @title ERC-721 Non-Fungible Token Standard
+/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md
 #[solidity_interface(name = "ERC721", events(ERC721Events))]
 impl<T: Config> NonfungibleHandle<T> {
+	/// @notice Count all NFTs assigned to an owner
+	/// @dev NFTs assigned to the zero address are considered invalid, and this
+	///  function throws for queries about the zero address.
+	/// @param owner An address for whom to query the balance
+	/// @return The number of NFTs owned by `owner`, possibly zero
 	fn balance_of(&self, owner: address) -> Result<uint256> {
 		self.consume_store_reads(1)?;
 		let owner = T::CrossAccountId::from_eth(owner);
 		let balance = <AccountBalance<T>>::get((self.id, owner));
 		Ok(balance.into())
 	}
+	/// @notice Find the owner of an NFT
+	/// @dev NFTs assigned to zero address are considered invalid, and queries
+	///  about them do throw.
+	/// @param tokenId The identifier for an NFT
+	/// @return The address of the owner of the NFT
 	fn owner_of(&self, token_id: uint256) -> Result<address> {
 		self.consume_store_reads(1)?;
 		let token: TokenId = token_id.try_into()?;
@@ -226,7 +291,7 @@
 			.owner
 			.as_eth())
 	}
-	/// Not implemented
+	/// @dev Not implemented
 	fn safe_transfer_from_with_data(
 		&mut self,
 		_from: address,
@@ -238,7 +303,7 @@
 		// TODO: Not implemetable
 		Err("not implemented".into())
 	}
-	/// Not implemented
+	/// @dev Not implemented
 	fn safe_transfer_from(
 		&mut self,
 		_from: address,
@@ -250,6 +315,16 @@
 		Err("not implemented".into())
 	}
 
+	/// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE
+	///  TO CONFIRM THAT `to` IS CAPABLE OF RECEIVING NFTS OR ELSE
+	///  THEY MAY BE PERMANENTLY LOST
+	/// @dev Throws unless `msg.sender` is the current owner or an authorized
+	///  operator for this NFT. Throws if `from` is not the current owner. Throws
+	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.
+	/// @param from The current owner of the NFT
+	/// @param to The new owner
+	/// @param tokenId The NFT to transfer
+	/// @param _value Not used for an NFT
 	#[weight(<SelfWeightOf<T>>::transfer_from())]
 	fn transfer_from(
 		&mut self,
@@ -272,6 +347,12 @@
 		Ok(())
 	}
 
+	/// @notice Set or reaffirm the approved address for an NFT
+	/// @dev The zero address indicates there is no approved address.
+	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized
+	///  operator of the current owner.
+	/// @param approved The new approved NFT controller
+	/// @param tokenId The NFT to approve
 	#[weight(<SelfWeightOf<T>>::approve())]
 	fn approve(
 		&mut self,
@@ -289,7 +370,7 @@
 		Ok(())
 	}
 
-	/// Not implemented
+	/// @dev Not implemented
 	fn set_approval_for_all(
 		&mut self,
 		_caller: caller,
@@ -300,21 +381,26 @@
 		Err("not implemented".into())
 	}
 
-	/// Not implemented
+	/// @dev Not implemented
 	fn get_approved(&self, _token_id: uint256) -> Result<address> {
 		// TODO: Not implemetable
 		Err("not implemented".into())
 	}
 
-	/// Not implemented
+	/// @dev Not implemented
 	fn is_approved_for_all(&self, _owner: address, _operator: address) -> Result<address> {
 		// TODO: Not implemetable
 		Err("not implemented".into())
 	}
 }
 
+/// @title ERC721 Token that can be irreversibly burned (destroyed).
 #[solidity_interface(name = "ERC721Burnable")]
 impl<T: Config> NonfungibleHandle<T> {
+	/// @notice Burns a specific ERC721 token.
+	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized
+	///  operator of the current owner.
+	/// @param tokenId The NFT to approve
 	#[weight(<SelfWeightOf<T>>::burn_item())]
 	fn burn(&mut self, caller: caller, token_id: uint256) -> Result<void> {
 		let caller = T::CrossAccountId::from_eth(caller);
@@ -325,14 +411,18 @@
 	}
 }
 
+/// @title ERC721 minting logic.
 #[solidity_interface(name = "ERC721Mintable", events(ERC721MintableEvents))]
 impl<T: Config> NonfungibleHandle<T> {
 	fn minting_finished(&self) -> Result<bool> {
 		Ok(false)
 	}
 
-	/// `token_id` should be obtained with `next_token_id` method,
-	/// unlike standard, you can't specify it manually
+	/// @notice Function to mint token.
+	/// @dev `tokenId` should be obtained with `nextTokenId` method,
+	///  unlike standard, you can't specify it manually
+	/// @param to The new owner
+	/// @param tokenId ID of the minted NFT
 	#[weight(<SelfWeightOf<T>>::create_item())]
 	fn mint(&mut self, caller: caller, to: address, token_id: uint256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
@@ -364,8 +454,12 @@
 		Ok(true)
 	}
 
-	/// `token_id` should be obtained with `next_token_id` method,
-	/// unlike standard, you can't specify it manually
+	/// @notice Function to mint token with the given tokenUri.
+	/// @dev `tokenId` should be obtained with `nextTokenId` method,
+	///  unlike standard, you can't specify it manually
+	/// @param to The new owner
+	/// @param tokenId ID of the minted NFT
+	/// @param tokenUri Token URI that would be stored in the NFT properties
 	#[solidity(rename_selector = "mintWithTokenURI")]
 	#[weight(<SelfWeightOf<T>>::create_item())]
 	fn mint_with_token_uri(
@@ -420,7 +514,7 @@
 		Ok(true)
 	}
 
-	/// Not implemented
+	/// @dev Not implemented
 	fn finish_minting(&mut self, _caller: caller) -> Result<bool> {
 		Err("not implementable".into())
 	}
@@ -449,8 +543,15 @@
 	false
 }
 
+/// @title Unique extensions for ERC721.
 #[solidity_interface(name = "ERC721UniqueExtensions")]
 impl<T: Config> NonfungibleHandle<T> {
+	/// @notice Transfer ownership of an NFT
+	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`
+	///  is the zero address. Throws if `tokenId` is not a valid NFT.
+	/// @param to The new owner
+	/// @param tokenId The NFT to transfer
+	/// @param _value Not used for an NFT
 	#[weight(<SelfWeightOf<T>>::transfer())]
 	fn transfer(
 		&mut self,
@@ -470,6 +571,13 @@
 		Ok(())
 	}
 
+	/// @notice Burns a specific ERC721 token.
+	/// @dev Throws unless `msg.sender` is the current owner or an authorized
+	///  operator for this NFT. Throws if `from` is not the current owner. Throws
+	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.
+	/// @param from The current owner of the NFT
+	/// @param tokenId The NFT to transfer
+	/// @param _value Not used for an NFT
 	#[weight(<SelfWeightOf<T>>::burn_from())]
 	fn burn_from(
 		&mut self,
@@ -490,6 +598,7 @@
 		Ok(())
 	}
 
+	/// @notice Returns next free NFT ID.
 	fn next_token_id(&self) -> Result<uint256> {
 		self.consume_store_reads(1)?;
 		Ok(<TokensMinted<T>>::get(self.id)
@@ -498,6 +607,11 @@
 			.into())
 	}
 
+	/// @notice Function to mint multiple tokens.
+	/// @dev `tokenIds` should be an array of consecutive numbers and first number
+	///  should be obtained with `nextTokenId` method
+	/// @param to The new owner
+	/// @param tokenIds IDs of the minted NFTs
 	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]
 	fn mint_bulk(&mut self, caller: caller, to: address, token_ids: Vec<uint256>) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
@@ -529,6 +643,11 @@
 		Ok(true)
 	}
 
+	/// @notice Function to mint multiple tokens with the given tokenUris.
+	/// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive
+	///  numbers and first number should be obtained with `nextTokenId` method
+	/// @param to The new owner
+	/// @param tokens array of pairs of token ID and token URI for minted tokens
 	#[solidity(rename_selector = "mintBulkWithTokenURI")]
 	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32))]
 	fn mint_bulk_with_token_uri(
modifiedpallets/nonfungible/src/lib.rsdiffbeforeafterboth
--- a/pallets/nonfungible/src/lib.rs
+++ b/pallets/nonfungible/src/lib.rs
@@ -14,6 +14,80 @@
 // You should have received a copy of the GNU General Public License
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
+//! # Nonfungible Pallet
+//!
+//! The Nonfungible pallet provides functionality for handling nonfungible collections and tokens.
+//!
+//! - [`Config`]
+//! - [`NonfungibleHandle`]
+//! - [`Pallet`]
+//! - [`CommonWeights`](common::CommonWeights)
+//!
+//! ## Overview
+//!
+//! The Nonfungible pallet provides functions for:
+//!
+//! - NFT collection creation and removal
+//! - Minting and burning of NFT tokens
+//! - Retrieving account balances
+//! - Transfering NFT tokens
+//! - Setting and checking allowance for NFT tokens
+//! - Setting properties and permissions for NFT collections and tokens
+//! - Nesting and unnesting tokens
+//!
+//! ### Terminology
+//!
+//! - **NFT token:** Non fungible token.
+//!
+//! - **NFT Collection:** A collection of NFT tokens. All NFT tokens are part of a collection.
+//!   Each collection can define it's own properties, properties for it's tokens and set of permissions.
+//!
+//! - **Balance:** Number of NFT tokens owned by an account
+//!
+//! - **Allowance:** NFT tokens owned by one account that another account is allowed to make operations on
+//!
+//! - **Burning:** The process of “deleting” a token from a collection and from
+//!   an account balance of the owner.
+//!
+//! - **Nesting:** Setting up parent-child relationship between tokens. Nested tokens are inhereting
+//!   owner from their parent. There could be multiple levels of nesting. Token couldn't be nested in
+//!   it's child token i.e. parent-child relationship graph shouldn't have cycles.
+//!
+//! - **Properties:** Key-Values pairs. Token properties are attached to a token. Collection properties are
+//!   attached to a collection. Set of permissions could be defined for each property.
+//!
+//! ### Implementations
+//!
+//! The Nonfungible pallet provides implementations for the following traits. If these traits provide
+//! the functionality that you need, then you can avoid coupling with the Nonfungible pallet.
+//!
+//! - [`CommonWeightInfo`](pallet_common::CommonWeightInfo): Functions for retrieval of transaction weight
+//! - [`CommonCollectionOperations`](pallet_common::CommonCollectionOperations): Functions for dealing
+//!   with collections
+//!
+//! ## Interface
+//!
+//! ### Dispatchable Functions
+//!
+//! - `init_collection` - Create NFT collection. NFT collection can be configured to allow or deny access for
+//!   some accounts.
+//! - `destroy_collection` - Destroy exising NFT collection. There should be no tokens in the collection.
+//! - `burn` - Burn NFT token owned by account.
+//! - `transfer` - Transfer NFT token. Transfers should be enabled for NFT collection.
+//!   Nests the NFT token if it is sent to another token.
+//! - `create_item` - Mint NFT token in collection. Sender should have permission to mint tokens.
+//! - `set_allowance` - Set allowance for another account.
+//! - `set_token_property` - Set token property value.
+//! - `delete_token_property` - Remove property from the token.
+//! - `set_collection_properties` - Set collection properties.
+//! - `delete_collection_properties` - Remove properties from the collection.
+//! - `set_property_permission` - Set collection property permission.
+//! - `set_token_property_permissions` - Set token property permissions.
+//!
+//! ## Assumptions
+//!
+//! * To perform operations on tokens sender should be in collection's allow list if collection access mode is `AllowList`.
+
 #![cfg_attr(not(feature = "std"), no_std)]
 
 use erc::ERC721Events;
@@ -56,8 +130,8 @@
 pub type CreateItemData<T> = CreateNftExData<<T as pallet_evm::account::Config>::CrossAccountId>;
 pub(crate) type SelfWeightOf<T> = <T as Config>::WeightInfo;
 
-/// Token data, stored independently from other data used to describe it.
-/// Notably contains the owner account address.
+/// Token data, stored independently from other data used to describe it
+/// for the convenience of database access. Notably contains the owner account address.
 #[struct_versioning::versioned(version = 2, upper)]
 #[derive(Encode, Decode, TypeInfo, MaxEncodedLen)]
 pub struct ItemData<CrossAccountId> {
@@ -122,7 +196,7 @@
 		QueryKind = OptionQuery,
 	>;
 
-	/// Key-value pairs, describing the metadata of a token.
+	/// Map of key-value pairs, describing the metadata of a token.
 	#[pallet::storage]
 	#[pallet::getter(fn token_properties)]
 	pub type TokenProperties<T: Config> = StorageNMap<
@@ -132,7 +206,15 @@
 		OnEmpty = up_data_structs::TokenProperties,
 	>;
 
-	/// Scoped, auxiliary properties of a token, primarily used for on-chain operations.
+	/// Custom data of a token that is serialized to bytes, 
+	/// primarily reserved for on-chain operations, 
+	/// normally obscured from the external users.
+	/// 
+	/// Auxiliary properties are slightly different from 
+	/// usual [`TokenProperties`] due to an unlimited number 
+	/// and separately stored and written-to key-value pairs.
+	/// 
+	/// Currently used to store RMRK data.
 	#[pallet::storage]
 	#[pallet::getter(fn token_aux_property)]
 	pub type TokenAuxProperties<T: Config> = StorageNMap<
@@ -171,7 +253,7 @@
 		QueryKind = ValueQuery,
 	>;
 
-	/// Amount of tokens owned in a collection.
+	/// Amount of tokens owned by an account in a collection.
 	#[pallet::storage]
 	pub type AccountBalance<T: Config> = StorageNMap<
 		Key = (
@@ -182,7 +264,7 @@
 		QueryKind = ValueQuery,
 	>;
 
-	/// todo:doc
+	/// Allowance set by a token owner for another user to perform one of certain transactions on a token.
 	#[pallet::storage]
 	pub type Allowance<T: Config> = StorageNMap<
 		Key = (Key<Twox64Concat, CollectionId>, Key<Twox64Concat, TokenId>),
@@ -284,13 +366,21 @@
 }
 
 impl<T: Config> Pallet<T> {
+	/// Get number of NFT tokens in collection.
 	pub fn total_supply(collection: &NonfungibleHandle<T>) -> u32 {
 		<TokensMinted<T>>::get(collection.id) - <TokensBurnt<T>>::get(collection.id)
 	}
+
+	/// Check that NFT token exists.
+	///
+	/// - `token`: Token ID.
 	pub fn token_exists(collection: &NonfungibleHandle<T>, token: TokenId) -> bool {
 		<TokenData<T>>::contains_key((collection.id, token))
 	}
 
+	/// Set the token property with the scope.
+	///
+	/// - `property`: Contains key-value pair.
 	pub fn set_scoped_token_property(
 		collection_id: CollectionId,
 		token_id: TokenId,
@@ -305,6 +395,7 @@
 		Ok(())
 	}
 
+	/// Batch operation to set multiple properties with the same scope.
 	pub fn set_scoped_token_properties(
 		collection_id: CollectionId,
 		token_id: TokenId,
@@ -319,6 +410,9 @@
 		Ok(())
 	}
 
+	/// Add or edit auxiliary data for the property.
+	///
+	/// - `f`: function that adds or edits auxiliary data.
 	pub fn try_mutate_token_aux_property<R, E>(
 		collection_id: CollectionId,
 		token_id: TokenId,
@@ -329,6 +423,7 @@
 		<TokenAuxProperties<T>>::try_mutate((collection_id, token_id, scope, key), f)
 	}
 
+	/// Remove auxiliary data for the property.
 	pub fn remove_token_aux_property(
 		collection_id: CollectionId,
 		token_id: TokenId,
@@ -338,6 +433,9 @@
 		<TokenAuxProperties<T>>::remove((collection_id, token_id, scope, key));
 	}
 
+	/// Get all auxiliary data in a given scope.
+	///
+	/// Returns iterator over Property Key - Data pairs.
 	pub fn iterate_token_aux_properties(
 		collection_id: CollectionId,
 		token_id: TokenId,
@@ -346,6 +444,7 @@
 		<TokenAuxProperties<T>>::iter_prefix((collection_id, token_id, scope))
 	}
 
+	/// Get ID of the last minted token
 	pub fn current_token_id(collection_id: CollectionId) -> TokenId {
 		TokenId(<TokensMinted<T>>::get(collection_id))
 	}
@@ -353,6 +452,11 @@
 
 // unchecked calls skips any permission checks
 impl<T: Config> Pallet<T> {
+	/// Create NFT collection
+	///
+	/// `init_collection` will take non-refundable deposit for collection creation.
+	///
+	/// - `data`: Contains settings for collection limits and permissions.
 	pub fn init_collection(
 		owner: T::CrossAccountId,
 		data: CreateCollectionData<T::AccountId>,
@@ -360,6 +464,11 @@
 	) -> Result<CollectionId, DispatchError> {
 		<PalletCommon<T>>::init_collection(owner, data, is_external)
 	}
+
+	/// Destroy NFT collection
+	///
+	/// `destroy_collection` will throw error if collection contains any tokens.
+	/// Only owner can destroy collection.
 	pub fn destroy_collection(
 		collection: NonfungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -384,6 +493,15 @@
 		Ok(())
 	}
 
+	/// Burn NFT token
+	///
+	/// `burn` removes `token` from the `collection`, from it's owner and from the parent token
+	/// if the token is nested.
+	/// Only the owner can `burn` the token. The `token` shouldn't have any nested tokens.
+	/// Also removes all corresponding properties and auxiliary properties.
+	///
+	/// - `token`: Token that should be burned
+	/// - `collection`: Collection that contains the token
 	pub fn burn(
 		collection: &NonfungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -453,6 +571,12 @@
 		Ok(())
 	}
 
+	/// Same as [`burn`] but burns all the tokens that are nested in the token first
+	///
+	/// - `self_budget`: Limit for searching children in depth.
+	/// - `breadth_budget`: Limit of breadth of searching children.
+	///
+	/// [`burn`]: struct.Pallet.html#method.burn
 	#[transactional]
 	pub fn burn_recursively(
 		collection: &NonfungibleHandle<T>,
@@ -492,6 +616,14 @@
 		})
 	}
 
+	/// Batch operation to add, edit or remove properties for the token
+	///
+	/// All affected properties should have mutable permission and sender should have
+	/// permission to edit those properties.
+	///
+	/// - `nesting_budget`: Limit for searching parents in depth to check ownership.
+	/// - `is_token_create`: Indicates that method is called during token initialization.
+	///   Allows to bypass ownership check.
 	#[transactional]
 	fn modify_token_properties(
 		collection: &NonfungibleHandle<T>,
@@ -585,6 +717,11 @@
 		Ok(())
 	}
 
+	/// Batch operation to add or edit properties for the token
+	///
+	/// Same as [`modify_token_properties`] but doesn't allow to remove properties
+	///
+	/// [`modify_token_properties`]: struct.Pallet.html#method.modify_token_properties
 	pub fn set_token_properties(
 		collection: &NonfungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -603,6 +740,11 @@
 		)
 	}
 
+	/// Add or edit single property for the token
+	///
+	/// Calls [`set_token_properties`] internally
+	///
+	/// [`set_token_properties`]: struct.Pallet.html#method.set_token_properties
 	pub fn set_token_property(
 		collection: &NonfungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -622,6 +764,11 @@
 		)
 	}
 
+	/// Batch operation to remove properties from the token
+	///
+	/// Same as [`modify_token_properties`] but doesn't allow to add or edit properties
+	///
+	/// [`modify_token_properties`]: struct.Pallet.html#method.modify_token_properties
 	pub fn delete_token_properties(
 		collection: &NonfungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -641,6 +788,11 @@
 		)
 	}
 
+	/// Remove single property from the token
+	///
+	/// Calls [`delete_token_properties`] internally
+	///
+	/// [`delete_token_properties`]: struct.Pallet.html#method.delete_token_properties
 	pub fn delete_token_property(
 		collection: &NonfungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -657,6 +809,7 @@
 		)
 	}
 
+	/// Add or edit properties for the collection
 	pub fn set_collection_properties(
 		collection: &NonfungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -665,6 +818,7 @@
 		<PalletCommon<T>>::set_collection_properties(collection, sender, properties)
 	}
 
+	/// Remove properties from the collection
 	pub fn delete_collection_properties(
 		collection: &CollectionHandle<T>,
 		sender: &T::CrossAccountId,
@@ -673,6 +827,9 @@
 		<PalletCommon<T>>::delete_collection_properties(collection, sender, property_keys)
 	}
 
+	/// Set property permissions for the token.
+	///
+	/// Sender should be the owner or admin of token's collection.
 	pub fn set_token_property_permissions(
 		collection: &CollectionHandle<T>,
 		sender: &T::CrossAccountId,
@@ -681,6 +838,9 @@
 		<PalletCommon<T>>::set_token_property_permissions(collection, sender, property_permissions)
 	}
 
+	/// Set property permissions for the collection.
+	///
+	/// Sender should be the owner or admin of the collection.
 	pub fn set_property_permission(
 		collection: &CollectionHandle<T>,
 		sender: &T::CrossAccountId,
@@ -689,6 +849,15 @@
 		<PalletCommon<T>>::set_property_permission(collection, sender, permission)
 	}
 
+	/// Transfer NFT token from one account to another.
+	///
+	/// `from` account stops being the owner and `to` account becomes the owner of the token.
+	/// If `to` is token than `to` becomes owner of the token and the token become nested.
+	/// Unnests token from previous parent if it was nested before.
+	/// Removes allowance for the token if there was any.
+	/// Throws if transfers aren't allowed for collection or if receiver reached token ownership limit.
+	///
+	/// - `nesting_budget`: Limit for token nesting depth
 	pub fn transfer(
 		collection: &NonfungibleHandle<T>,
 		from: &T::CrossAccountId,
@@ -780,6 +949,16 @@
 		Ok(())
 	}
 
+	/// Batch operation to mint multiple NFT tokens.
+	///
+	/// The sender should be the owner/admin of the collection or collection should be configured
+	/// to allow public minting.
+	/// Throws if amount of tokens reached it's limit for the collection or if caller reached
+	/// token ownership limit.
+	///
+	/// - `data`: Contains list of token properties and users who will become the owners of the
+	///   corresponging tokens.
+	/// - `nesting_budget`: Limit for token nesting depth
 	pub fn create_multiple_items(
 		collection: &NonfungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -964,6 +1143,9 @@
 		}
 	}
 
+	/// Set allowance for the spender to `transfer` or `burn` sender's token.
+	///
+	/// - `token`: Token the spender is allowed to `transfer` or `burn`.
 	pub fn set_allowance(
 		collection: &NonfungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -996,6 +1178,7 @@
 		Ok(())
 	}
 
+	/// Checks allowance for the spender to use the token.
 	fn check_allowed(
 		collection: &NonfungibleHandle<T>,
 		spender: &T::CrossAccountId,
@@ -1038,6 +1221,12 @@
 		Ok(())
 	}
 
+	/// Transfer NFT token from one account to another.
+	///
+	/// Same as the [`transfer`] but spender doesn't needs to be the owner of the token.
+	/// The owner should set allowance for the spender to transfer token.
+	///
+	/// [`transfer`]: struct.Pallet.html#method.transfer
 	pub fn transfer_from(
 		collection: &NonfungibleHandle<T>,
 		spender: &T::CrossAccountId,
@@ -1054,6 +1243,12 @@
 		Self::transfer(collection, from, to, token, nesting_budget)
 	}
 
+	/// Burn NFT token for `from` account.
+	///
+	/// Same as the [`burn`] but spender doesn't need to be an owner of the token. The owner should
+	/// set allowance for the spender to burn token.
+	///
+	/// [`burn`]: struct.Pallet.html#method.burn
 	pub fn burn_from(
 		collection: &NonfungibleHandle<T>,
 		spender: &T::CrossAccountId,
@@ -1068,6 +1263,8 @@
 		Self::burn(collection, from, token)
 	}
 
+	/// Check that `from` token could be nested in `under` token.
+	///
 	pub fn check_nesting(
 		handle: &NonfungibleHandle<T>,
 		sender: T::CrossAccountId,
@@ -1137,7 +1334,11 @@
 			.collect()
 	}
 
-	/// Delegated to `create_multiple_items`
+	/// Mint single NFT token.
+	///
+	/// Delegated to [`create_multiple_items`]
+	///
+	/// [`create_multiple_items`]: struct.Pallet.html#method.create_multiple_items
 	pub fn create_item(
 		collection: &NonfungibleHandle<T>,
 		sender: &T::CrossAccountId,
modifiedpallets/nonfungible/src/stubs/UniqueNFT.rawdiffbeforeafterboth

binary blob — no preview

modifiedpallets/nonfungible/src/stubs/UniqueNFT.soldiffbeforeafterboth
--- a/pallets/nonfungible/src/stubs/UniqueNFT.sol
+++ b/pallets/nonfungible/src/stubs/UniqueNFT.sol
@@ -53,6 +53,13 @@
 
 // Selector: 41369377
 contract TokenProperties is Dummy, ERC165 {
+	// @notice Set permissions for token property.
+	// @dev Throws error if `msg.sender` is not admin or owner of the collection.
+	// @param key Property key.
+	// @param is_mutable Permission to mutate property.
+	// @param collection_admin Permission to mutate property by collection admin if property is mutable.
+	// @param token_owner Permission to mutate property by token owner if property is mutable.
+	//
 	// Selector: setTokenPropertyPermission(string,bool,bool,bool) 222d97fa
 	function setTokenPropertyPermission(
 		string memory key,
@@ -68,6 +75,12 @@
 		dummy = 0;
 	}
 
+	// @notice Set token property value.
+	// @dev Throws error if `msg.sender` has no permission to edit the property.
+	// @param tokenId ID of the token.
+	// @param key Property key.
+	// @param value Property value.
+	//
 	// Selector: setProperty(uint256,string,bytes) 1752d67b
 	function setProperty(
 		uint256 tokenId,
@@ -81,6 +94,11 @@
 		dummy = 0;
 	}
 
+	// @notice Delete token property value.
+	// @dev Throws error if `msg.sender` has no permission to edit the property.
+	// @param tokenId ID of the token.
+	// @param key Property key.
+	//
 	// Selector: deleteProperty(uint256,string) 066111d1
 	function deleteProperty(uint256 tokenId, string memory key) public {
 		require(false, stub_error);
@@ -89,7 +107,11 @@
 		dummy = 0;
 	}
 
-	// Throws error if key not found
+	// @notice Get token property value.
+	// @dev Throws error if key not found
+	// @param tokenId ID of the token.
+	// @param key Property key.
+	// @return Property value bytes
 	//
 	// Selector: property(uint256,string) 7228c327
 	function property(uint256 tokenId, string memory key)
@@ -107,6 +129,11 @@
 
 // Selector: 42966c68
 contract ERC721Burnable is Dummy, ERC165 {
+	// @notice Burns a specific ERC721 token.
+	// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized
+	//  operator of the current owner.
+	// @param tokenId The NFT to approve
+	//
 	// Selector: burn(uint256) 42966c68
 	function burn(uint256 tokenId) public {
 		require(false, stub_error);
@@ -117,6 +144,12 @@
 
 // Selector: 58800161
 contract ERC721 is Dummy, ERC165, ERC721Events {
+	// @notice Count all NFTs assigned to an owner
+	// @dev NFTs assigned to the zero address are considered invalid, and this
+	//  function throws for queries about the zero address.
+	// @param owner An address for whom to query the balance
+	// @return The number of NFTs owned by `owner`, possibly zero
+	//
 	// Selector: balanceOf(address) 70a08231
 	function balanceOf(address owner) public view returns (uint256) {
 		require(false, stub_error);
@@ -125,6 +158,12 @@
 		return 0;
 	}
 
+	// @notice Find the owner of an NFT
+	// @dev NFTs assigned to zero address are considered invalid, and queries
+	//  about them do throw.
+	// @param tokenId The identifier for an NFT
+	// @return The address of the owner of the NFT
+	//
 	// Selector: ownerOf(uint256) 6352211e
 	function ownerOf(uint256 tokenId) public view returns (address) {
 		require(false, stub_error);
@@ -133,7 +172,7 @@
 		return 0x0000000000000000000000000000000000000000;
 	}
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: safeTransferFromWithData(address,address,uint256,bytes) 60a11672
 	function safeTransferFromWithData(
@@ -150,7 +189,7 @@
 		dummy = 0;
 	}
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: safeTransferFrom(address,address,uint256) 42842e0e
 	function safeTransferFrom(
@@ -165,6 +204,17 @@
 		dummy = 0;
 	}
 
+	// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE
+	//  TO CONFIRM THAT `to` IS CAPABLE OF RECEIVING NFTS OR ELSE
+	//  THEY MAY BE PERMANENTLY LOST
+	// @dev Throws unless `msg.sender` is the current owner or an authorized
+	//  operator for this NFT. Throws if `from` is not the current owner. Throws
+	//  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.
+	// @param from The current owner of the NFT
+	// @param to The new owner
+	// @param tokenId The NFT to transfer
+	// @param _value Not used for an NFT
+	//
 	// Selector: transferFrom(address,address,uint256) 23b872dd
 	function transferFrom(
 		address from,
@@ -178,6 +228,13 @@
 		dummy = 0;
 	}
 
+	// @notice Set or reaffirm the approved address for an NFT
+	// @dev The zero address indicates there is no approved address.
+	// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized
+	//  operator of the current owner.
+	// @param approved The new approved NFT controller
+	// @param tokenId The NFT to approve
+	//
 	// Selector: approve(address,uint256) 095ea7b3
 	function approve(address approved, uint256 tokenId) public {
 		require(false, stub_error);
@@ -186,7 +243,7 @@
 		dummy = 0;
 	}
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: setApprovalForAll(address,bool) a22cb465
 	function setApprovalForAll(address operator, bool approved) public {
@@ -196,7 +253,7 @@
 		dummy = 0;
 	}
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: getApproved(uint256) 081812fc
 	function getApproved(uint256 tokenId) public view returns (address) {
@@ -206,7 +263,7 @@
 		return 0x0000000000000000000000000000000000000000;
 	}
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: isApprovedForAll(address,address) e985e9c5
 	function isApprovedForAll(address owner, address operator)
@@ -224,6 +281,8 @@
 
 // Selector: 5b5e139f
 contract ERC721Metadata is Dummy, ERC165 {
+	// @notice A descriptive name for a collection of NFTs in this contract
+	//
 	// Selector: name() 06fdde03
 	function name() public view returns (string memory) {
 		require(false, stub_error);
@@ -231,6 +290,8 @@
 		return "";
 	}
 
+	// @notice An abbreviated name for NFTs in this contract
+	//
 	// Selector: symbol() 95d89b41
 	function symbol() public view returns (string memory) {
 		require(false, stub_error);
@@ -238,7 +299,11 @@
 		return "";
 	}
 
-	// Returns token's const_metadata
+	// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
+	// @dev Throws if `tokenId` is not a valid NFT. URIs are defined in RFC
+	//  3986. The URI may point to a JSON file that conforms to the "ERC721
+	//  Metadata JSON Schema".
+	// @return token's const_metadata
 	//
 	// Selector: tokenURI(uint256) c87b56dd
 	function tokenURI(uint256 tokenId) public view returns (string memory) {
@@ -258,8 +323,11 @@
 		return false;
 	}
 
-	// `token_id` should be obtained with `next_token_id` method,
-	// unlike standard, you can't specify it manually
+	// @notice Function to mint token.
+	// @dev `tokenId` should be obtained with `nextTokenId` method,
+	//  unlike standard, you can't specify it manually
+	// @param to The new owner
+	// @param tokenId ID of the minted NFT
 	//
 	// Selector: mint(address,uint256) 40c10f19
 	function mint(address to, uint256 tokenId) public returns (bool) {
@@ -270,8 +338,12 @@
 		return false;
 	}
 
-	// `token_id` should be obtained with `next_token_id` method,
-	// unlike standard, you can't specify it manually
+	// @notice Function to mint token with the given tokenUri.
+	// @dev `tokenId` should be obtained with `nextTokenId` method,
+	//  unlike standard, you can't specify it manually
+	// @param to The new owner
+	// @param tokenId ID of the minted NFT
+	// @param tokenUri Token URI that would be stored in the NFT properties
 	//
 	// Selector: mintWithTokenURI(address,uint256,string) 50bb4e7f
 	function mintWithTokenURI(
@@ -287,7 +359,7 @@
 		return false;
 	}
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: finishMinting() 7d64bcb4
 	function finishMinting() public returns (bool) {
@@ -299,6 +371,11 @@
 
 // Selector: 780e9d63
 contract ERC721Enumerable is Dummy, ERC165 {
+	// @notice Enumerate valid NFTs
+	// @param index A counter less than `totalSupply()`
+	// @return The token identifier for the `index`th NFT,
+	//  (sort order not specified)
+	//
 	// Selector: tokenByIndex(uint256) 4f6ccce7
 	function tokenByIndex(uint256 index) public view returns (uint256) {
 		require(false, stub_error);
@@ -307,7 +384,7 @@
 		return 0;
 	}
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: tokenOfOwnerByIndex(address,uint256) 2f745c59
 	function tokenOfOwnerByIndex(address owner, uint256 index)
@@ -322,6 +399,10 @@
 		return 0;
 	}
 
+	// @notice Count NFTs tracked by this contract
+	// @return A count of valid NFTs tracked by this contract, where each one of
+	//  them has an assigned and queryable owner not equal to the zero address
+	//
 	// Selector: totalSupply() 18160ddd
 	function totalSupply() public view returns (uint256) {
 		require(false, stub_error);
@@ -332,6 +413,11 @@
 
 // Selector: 7d9262e6
 contract Collection is Dummy, ERC165 {
+	// Set collection property.
+	//
+	// @param key Property key.
+	// @param value Propery value.
+	//
 	// Selector: setCollectionProperty(string,bytes) 2f073f66
 	function setCollectionProperty(string memory key, bytes memory value)
 		public
@@ -342,6 +428,10 @@
 		dummy = 0;
 	}
 
+	// Delete collection property.
+	//
+	// @param key Property key.
+	//
 	// Selector: deleteCollectionProperty(string) 7b7debce
 	function deleteCollectionProperty(string memory key) public {
 		require(false, stub_error);
@@ -349,8 +439,13 @@
 		dummy = 0;
 	}
 
-	// Throws error if key not found
+	// Get collection property.
+	//
+	// @dev Throws error if key not found.
 	//
+	// @param key Property key.
+	// @return bytes The property corresponding to the key.
+	//
 	// Selector: collectionProperty(string) cf24fd6d
 	function collectionProperty(string memory key)
 		public
@@ -363,6 +458,12 @@
 		return hex"";
 	}
 
+	// Set the sponsor of the collection.
+	//
+	// @dev In order for sponsorship to work, it must be confirmed on behalf of the sponsor.
+	//
+	// @param sponsor Address of the sponsor from whose account funds will be debited for operations with the contract.
+	//
 	// Selector: setCollectionSponsor(address) 7623402e
 	function setCollectionSponsor(address sponsor) public {
 		require(false, stub_error);
@@ -370,12 +471,27 @@
 		dummy = 0;
 	}
 
+	// Collection sponsorship confirmation.
+	//
+	// @dev After setting the sponsor for the collection, it must be confirmed with this function.
+	//
 	// Selector: confirmCollectionSponsorship() 3c50e97a
 	function confirmCollectionSponsorship() public {
 		require(false, stub_error);
 		dummy = 0;
 	}
 
+	// Set limits for the collection.
+	// @dev Throws error if limit not found.
+	// @param limit Name of the limit. Valid names:
+	// 	"accountTokenOwnershipLimit",
+	// 	"sponsoredDataSize",
+	// 	"sponsoredDataRateLimit",
+	// 	"tokenLimit",
+	// 	"sponsorTransferTimeout",
+	// 	"sponsorApproveTimeout"
+	// @param value Value of the limit.
+	//
 	// Selector: setCollectionLimit(string,uint32) 6a3841db
 	function setCollectionLimit(string memory limit, uint32 value) public {
 		require(false, stub_error);
@@ -384,6 +500,14 @@
 		dummy = 0;
 	}
 
+	// Set limits for the collection.
+	// @dev Throws error if limit not found.
+	// @param limit Name of the limit. Valid names:
+	// 	"ownerCanTransfer",
+	// 	"ownerCanDestroy",
+	// 	"transfersEnabled"
+	// @param value Value of the limit.
+	//
 	// Selector: setCollectionLimit(string,bool) 993b7fba
 	function setCollectionLimit(string memory limit, bool value) public {
 		require(false, stub_error);
@@ -392,6 +516,8 @@
 		dummy = 0;
 	}
 
+	// Get contract address.
+	//
 	// Selector: contractAddress() f6b4dfb4
 	function contractAddress() public view returns (address) {
 		require(false, stub_error);
@@ -399,34 +525,51 @@
 		return 0x0000000000000000000000000000000000000000;
 	}
 
+	// Add collection admin by substrate address.
+	// @param new_admin Substrate administrator address.
+	//
 	// Selector: addCollectionAdminSubstrate(uint256) 5730062b
-	function addCollectionAdminSubstrate(uint256 newAdmin) public view {
+	function addCollectionAdminSubstrate(uint256 newAdmin) public {
 		require(false, stub_error);
 		newAdmin;
-		dummy;
+		dummy = 0;
 	}
 
+	// Remove collection admin by substrate address.
+	// @param admin Substrate administrator address.
+	//
 	// Selector: removeCollectionAdminSubstrate(uint256) 4048fcf9
-	function removeCollectionAdminSubstrate(uint256 newAdmin) public view {
+	function removeCollectionAdminSubstrate(uint256 admin) public {
 		require(false, stub_error);
-		newAdmin;
-		dummy;
+		admin;
+		dummy = 0;
 	}
 
+	// Add collection admin.
+	// @param new_admin Address of the added administrator.
+	//
 	// Selector: addCollectionAdmin(address) 92e462c7
-	function addCollectionAdmin(address newAdmin) public view {
+	function addCollectionAdmin(address newAdmin) public {
 		require(false, stub_error);
 		newAdmin;
-		dummy;
+		dummy = 0;
 	}
 
+	// Remove collection admin.
+	//
+	// @param new_admin Address of the removed administrator.
+	//
 	// Selector: removeCollectionAdmin(address) fafd7b42
-	function removeCollectionAdmin(address admin) public view {
+	function removeCollectionAdmin(address admin) public {
 		require(false, stub_error);
 		admin;
-		dummy;
+		dummy = 0;
 	}
 
+	// Toggle accessibility of collection nesting.
+	//
+	// @param enable If "true" degenerates to nesting: 'Owner' else to nesting: 'Disabled'
+	//
 	// Selector: setCollectionNesting(bool) 112d4586
 	function setCollectionNesting(bool enable) public {
 		require(false, stub_error);
@@ -434,6 +577,11 @@
 		dummy = 0;
 	}
 
+	// Toggle accessibility of collection nesting.
+	//
+	// @param enable If "true" degenerates to nesting: {OwnerRestricted: [1, 2, 3]} else to nesting: 'Disabled'
+	// @param collections Addresses of collections that will be available for nesting.
+	//
 	// Selector: setCollectionNesting(bool,address[]) 64872396
 	function setCollectionNesting(bool enable, address[] memory collections)
 		public
@@ -444,6 +592,11 @@
 		dummy = 0;
 	}
 
+	// Set the collection access method.
+	// @param mode Access mode
+	// 	0 for Normal
+	// 	1 for AllowList
+	//
 	// Selector: setCollectionAccess(uint8) 41835d4c
 	function setCollectionAccess(uint8 mode) public {
 		require(false, stub_error);
@@ -451,20 +604,32 @@
 		dummy = 0;
 	}
 
+	// Add the user to the allowed list.
+	//
+	// @param user Address of a trusted user.
+	//
 	// Selector: addToCollectionAllowList(address) 67844fe6
-	function addToCollectionAllowList(address user) public view {
+	function addToCollectionAllowList(address user) public {
 		require(false, stub_error);
 		user;
-		dummy;
+		dummy = 0;
 	}
 
+	// Remove the user from the allowed list.
+	//
+	// @param user Address of a removed user.
+	//
 	// Selector: removeFromCollectionAllowList(address) 85c51acb
-	function removeFromCollectionAllowList(address user) public view {
+	function removeFromCollectionAllowList(address user) public {
 		require(false, stub_error);
 		user;
-		dummy;
+		dummy = 0;
 	}
 
+	// Switch permission for minting.
+	//
+	// @param mode Enable if "true".
+	//
 	// Selector: setCollectionMintMode(bool) 00018e84
 	function setCollectionMintMode(bool mode) public {
 		require(false, stub_error);
@@ -475,6 +640,13 @@
 
 // Selector: d74d154f
 contract ERC721UniqueExtensions is Dummy, ERC165 {
+	// @notice Transfer ownership of an NFT
+	// @dev Throws unless `msg.sender` is the current owner. Throws if `to`
+	//  is the zero address. Throws if `tokenId` is not a valid NFT.
+	// @param to The new owner
+	// @param tokenId The NFT to transfer
+	// @param _value Not used for an NFT
+	//
 	// Selector: transfer(address,uint256) a9059cbb
 	function transfer(address to, uint256 tokenId) public {
 		require(false, stub_error);
@@ -483,6 +655,14 @@
 		dummy = 0;
 	}
 
+	// @notice Burns a specific ERC721 token.
+	// @dev Throws unless `msg.sender` is the current owner or an authorized
+	//  operator for this NFT. Throws if `from` is not the current owner. Throws
+	//  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.
+	// @param from The current owner of the NFT
+	// @param tokenId The NFT to transfer
+	// @param _value Not used for an NFT
+	//
 	// Selector: burnFrom(address,uint256) 79cc6790
 	function burnFrom(address from, uint256 tokenId) public {
 		require(false, stub_error);
@@ -491,6 +671,8 @@
 		dummy = 0;
 	}
 
+	// @notice Returns next free NFT ID.
+	//
 	// Selector: nextTokenId() 75794a3c
 	function nextTokenId() public view returns (uint256) {
 		require(false, stub_error);
@@ -498,6 +680,12 @@
 		return 0;
 	}
 
+	// @notice Function to mint multiple tokens.
+	// @dev `tokenIds` should be an array of consecutive numbers and first number
+	//  should be obtained with `nextTokenId` method
+	// @param to The new owner
+	// @param tokenIds IDs of the minted NFTs
+	//
 	// Selector: mintBulk(address,uint256[]) 44a9945e
 	function mintBulk(address to, uint256[] memory tokenIds)
 		public
@@ -510,6 +698,12 @@
 		return false;
 	}
 
+	// @notice Function to mint multiple tokens with the given tokenUris.
+	// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive
+	//  numbers and first number should be obtained with `nextTokenId` method
+	// @param to The new owner
+	// @param tokens array of pairs of token ID and token URI for minted tokens
+	//
 	// Selector: mintBulkWithTokenURI(address,(uint256,string)[]) 36543006
 	function mintBulkWithTokenURI(address to, Tuple0[] memory tokens)
 		public
modifiedpallets/nonfungible/src/weights.rsdiffbeforeafterboth
--- a/pallets/nonfungible/src/weights.rs
+++ b/pallets/nonfungible/src/weights.rs
@@ -3,7 +3,7 @@
 //! Autogenerated weights for pallet_nonfungible
 //!
 //! THIS FILE WAS AUTO-GENERATED USING THE SUBSTRATE BENCHMARK CLI VERSION 4.0.0-dev
-//! DATE: 2022-06-15, STEPS: `50`, REPEAT: 80, LOW RANGE: `[]`, HIGH RANGE: `[]`
+//! DATE: 2022-07-20, STEPS: `50`, REPEAT: 80, LOW RANGE: `[]`, HIGH RANGE: `[]`
 //! EXECUTION: None, WASM-EXECUTION: Compiled, CHAIN: None, DB CACHE: 1024
 
 // Executed Command:
@@ -56,7 +56,7 @@
 	// Storage: Nonfungible TokenData (r:0 w:1)
 	// Storage: Nonfungible Owned (r:0 w:1)
 	fn create_item() -> Weight {
-		(24_135_000 as Weight)
+		(20_328_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(2 as Weight))
 			.saturating_add(T::DbWeight::get().writes(4 as Weight))
 	}
@@ -65,9 +65,9 @@
 	// Storage: Nonfungible TokenData (r:0 w:4)
 	// Storage: Nonfungible Owned (r:0 w:4)
 	fn create_multiple_items(b: u32, ) -> Weight {
-		(21_952_000 as Weight)
-			// Standard Error: 5_000
-			.saturating_add((4_727_000 as Weight).saturating_mul(b as Weight))
+		(10_134_000 as Weight)
+			// Standard Error: 3_000
+			.saturating_add((4_927_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(T::DbWeight::get().reads(2 as Weight))
 			.saturating_add(T::DbWeight::get().writes(2 as Weight))
 			.saturating_add(T::DbWeight::get().writes((2 as Weight).saturating_mul(b as Weight)))
@@ -77,9 +77,9 @@
 	// Storage: Nonfungible TokenData (r:0 w:4)
 	// Storage: Nonfungible Owned (r:0 w:4)
 	fn create_multiple_items_ex(b: u32, ) -> Weight {
-		(10_432_000 as Weight)
-			// Standard Error: 6_000
-			.saturating_add((7_383_000 as Weight).saturating_mul(b as Weight))
+		(5_710_000 as Weight)
+			// Standard Error: 4_000
+			.saturating_add((7_578_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(T::DbWeight::get().reads(1 as Weight))
 			.saturating_add(T::DbWeight::get().reads((1 as Weight).saturating_mul(b as Weight)))
 			.saturating_add(T::DbWeight::get().writes(1 as Weight))
@@ -93,7 +93,7 @@
 	// Storage: Nonfungible Owned (r:0 w:1)
 	// Storage: Nonfungible TokenProperties (r:0 w:1)
 	fn burn_item() -> Weight {
-		(29_798_000 as Weight)
+		(28_433_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(5 as Weight))
 			.saturating_add(T::DbWeight::get().writes(5 as Weight))
 	}
@@ -105,7 +105,7 @@
 	// Storage: Nonfungible Owned (r:0 w:1)
 	// Storage: Nonfungible TokenProperties (r:0 w:1)
 	fn burn_recursively_self_raw() -> Weight {
-		(37_955_000 as Weight)
+		(34_435_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(5 as Weight))
 			.saturating_add(T::DbWeight::get().writes(5 as Weight))
 	}
@@ -119,8 +119,8 @@
 	// Storage: Common CollectionById (r:1 w:0)
 	fn burn_recursively_breadth_plus_self_plus_self_per_each_raw(b: u32, ) -> Weight {
 		(0 as Weight)
-			// Standard Error: 1_349_000
-			.saturating_add((275_145_000 as Weight).saturating_mul(b as Weight))
+			// Standard Error: 1_539_000
+			.saturating_add((304_456_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(T::DbWeight::get().reads(7 as Weight))
 			.saturating_add(T::DbWeight::get().reads((4 as Weight).saturating_mul(b as Weight)))
 			.saturating_add(T::DbWeight::get().writes(6 as Weight))
@@ -131,14 +131,14 @@
 	// Storage: Nonfungible Allowance (r:1 w:0)
 	// Storage: Nonfungible Owned (r:0 w:2)
 	fn transfer() -> Weight {
-		(27_867_000 as Weight)
+		(24_376_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(4 as Weight))
 			.saturating_add(T::DbWeight::get().writes(5 as Weight))
 	}
 	// Storage: Nonfungible TokenData (r:1 w:0)
 	// Storage: Nonfungible Allowance (r:1 w:1)
 	fn approve() -> Weight {
-		(18_824_000 as Weight)
+		(15_890_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(2 as Weight))
 			.saturating_add(T::DbWeight::get().writes(1 as Weight))
 	}
@@ -147,7 +147,7 @@
 	// Storage: Nonfungible AccountBalance (r:2 w:2)
 	// Storage: Nonfungible Owned (r:0 w:2)
 	fn transfer_from() -> Weight {
-		(32_879_000 as Weight)
+		(28_634_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(4 as Weight))
 			.saturating_add(T::DbWeight::get().writes(6 as Weight))
 	}
@@ -159,7 +159,7 @@
 	// Storage: Nonfungible Owned (r:0 w:1)
 	// Storage: Nonfungible TokenProperties (r:0 w:1)
 	fn burn_from() -> Weight {
-		(37_061_000 as Weight)
+		(32_201_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(5 as Weight))
 			.saturating_add(T::DbWeight::get().writes(6 as Weight))
 	}
@@ -167,28 +167,26 @@
 	fn set_token_property_permissions(b: u32, ) -> Weight {
 		(0 as Weight)
 			// Standard Error: 57_000
-			.saturating_add((15_149_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add((15_232_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(T::DbWeight::get().reads(1 as Weight))
 			.saturating_add(T::DbWeight::get().writes(1 as Weight))
 	}
 	// Storage: Common CollectionPropertyPermissions (r:1 w:0)
-	// Storage: Nonfungible TokenData (r:1 w:0)
 	// Storage: Nonfungible TokenProperties (r:1 w:1)
 	fn set_token_properties(b: u32, ) -> Weight {
 		(0 as Weight)
-			// Standard Error: 2_278_000
-			.saturating_add((409_613_000 as Weight).saturating_mul(b as Weight))
-			.saturating_add(T::DbWeight::get().reads(3 as Weight))
+			// Standard Error: 1_648_000
+			.saturating_add((288_654_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add(T::DbWeight::get().reads(2 as Weight))
 			.saturating_add(T::DbWeight::get().writes(1 as Weight))
 	}
 	// Storage: Common CollectionPropertyPermissions (r:1 w:0)
-	// Storage: Nonfungible TokenData (r:1 w:0)
 	// Storage: Nonfungible TokenProperties (r:1 w:1)
 	fn delete_token_properties(b: u32, ) -> Weight {
 		(0 as Weight)
-			// Standard Error: 2_234_000
-			.saturating_add((408_185_000 as Weight).saturating_mul(b as Weight))
-			.saturating_add(T::DbWeight::get().reads(3 as Weight))
+			// Standard Error: 1_632_000
+			.saturating_add((289_190_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add(T::DbWeight::get().reads(2 as Weight))
 			.saturating_add(T::DbWeight::get().writes(1 as Weight))
 	}
 }
@@ -200,7 +198,7 @@
 	// Storage: Nonfungible TokenData (r:0 w:1)
 	// Storage: Nonfungible Owned (r:0 w:1)
 	fn create_item() -> Weight {
-		(24_135_000 as Weight)
+		(20_328_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(2 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(4 as Weight))
 	}
@@ -209,9 +207,9 @@
 	// Storage: Nonfungible TokenData (r:0 w:4)
 	// Storage: Nonfungible Owned (r:0 w:4)
 	fn create_multiple_items(b: u32, ) -> Weight {
-		(21_952_000 as Weight)
-			// Standard Error: 5_000
-			.saturating_add((4_727_000 as Weight).saturating_mul(b as Weight))
+		(10_134_000 as Weight)
+			// Standard Error: 3_000
+			.saturating_add((4_927_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(RocksDbWeight::get().reads(2 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(2 as Weight))
 			.saturating_add(RocksDbWeight::get().writes((2 as Weight).saturating_mul(b as Weight)))
@@ -221,9 +219,9 @@
 	// Storage: Nonfungible TokenData (r:0 w:4)
 	// Storage: Nonfungible Owned (r:0 w:4)
 	fn create_multiple_items_ex(b: u32, ) -> Weight {
-		(10_432_000 as Weight)
-			// Standard Error: 6_000
-			.saturating_add((7_383_000 as Weight).saturating_mul(b as Weight))
+		(5_710_000 as Weight)
+			// Standard Error: 4_000
+			.saturating_add((7_578_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(RocksDbWeight::get().reads(1 as Weight))
 			.saturating_add(RocksDbWeight::get().reads((1 as Weight).saturating_mul(b as Weight)))
 			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
@@ -237,7 +235,7 @@
 	// Storage: Nonfungible Owned (r:0 w:1)
 	// Storage: Nonfungible TokenProperties (r:0 w:1)
 	fn burn_item() -> Weight {
-		(29_798_000 as Weight)
+		(28_433_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(5 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(5 as Weight))
 	}
@@ -249,7 +247,7 @@
 	// Storage: Nonfungible Owned (r:0 w:1)
 	// Storage: Nonfungible TokenProperties (r:0 w:1)
 	fn burn_recursively_self_raw() -> Weight {
-		(37_955_000 as Weight)
+		(34_435_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(5 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(5 as Weight))
 	}
@@ -263,8 +261,8 @@
 	// Storage: Common CollectionById (r:1 w:0)
 	fn burn_recursively_breadth_plus_self_plus_self_per_each_raw(b: u32, ) -> Weight {
 		(0 as Weight)
-			// Standard Error: 1_349_000
-			.saturating_add((275_145_000 as Weight).saturating_mul(b as Weight))
+			// Standard Error: 1_539_000
+			.saturating_add((304_456_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(RocksDbWeight::get().reads(7 as Weight))
 			.saturating_add(RocksDbWeight::get().reads((4 as Weight).saturating_mul(b as Weight)))
 			.saturating_add(RocksDbWeight::get().writes(6 as Weight))
@@ -275,14 +273,14 @@
 	// Storage: Nonfungible Allowance (r:1 w:0)
 	// Storage: Nonfungible Owned (r:0 w:2)
 	fn transfer() -> Weight {
-		(27_867_000 as Weight)
+		(24_376_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(4 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(5 as Weight))
 	}
 	// Storage: Nonfungible TokenData (r:1 w:0)
 	// Storage: Nonfungible Allowance (r:1 w:1)
 	fn approve() -> Weight {
-		(18_824_000 as Weight)
+		(15_890_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(2 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
 	}
@@ -291,7 +289,7 @@
 	// Storage: Nonfungible AccountBalance (r:2 w:2)
 	// Storage: Nonfungible Owned (r:0 w:2)
 	fn transfer_from() -> Weight {
-		(32_879_000 as Weight)
+		(28_634_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(4 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(6 as Weight))
 	}
@@ -303,7 +301,7 @@
 	// Storage: Nonfungible Owned (r:0 w:1)
 	// Storage: Nonfungible TokenProperties (r:0 w:1)
 	fn burn_from() -> Weight {
-		(37_061_000 as Weight)
+		(32_201_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(5 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(6 as Weight))
 	}
@@ -311,28 +309,26 @@
 	fn set_token_property_permissions(b: u32, ) -> Weight {
 		(0 as Weight)
 			// Standard Error: 57_000
-			.saturating_add((15_149_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add((15_232_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(RocksDbWeight::get().reads(1 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
 	}
 	// Storage: Common CollectionPropertyPermissions (r:1 w:0)
-	// Storage: Nonfungible TokenData (r:1 w:0)
 	// Storage: Nonfungible TokenProperties (r:1 w:1)
 	fn set_token_properties(b: u32, ) -> Weight {
 		(0 as Weight)
-			// Standard Error: 2_278_000
-			.saturating_add((409_613_000 as Weight).saturating_mul(b as Weight))
-			.saturating_add(RocksDbWeight::get().reads(3 as Weight))
+			// Standard Error: 1_648_000
+			.saturating_add((288_654_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add(RocksDbWeight::get().reads(2 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
 	}
 	// Storage: Common CollectionPropertyPermissions (r:1 w:0)
-	// Storage: Nonfungible TokenData (r:1 w:0)
 	// Storage: Nonfungible TokenProperties (r:1 w:1)
 	fn delete_token_properties(b: u32, ) -> Weight {
 		(0 as Weight)
-			// Standard Error: 2_234_000
-			.saturating_add((408_185_000 as Weight).saturating_mul(b as Weight))
-			.saturating_add(RocksDbWeight::get().reads(3 as Weight))
+			// Standard Error: 1_632_000
+			.saturating_add((289_190_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add(RocksDbWeight::get().reads(2 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
 	}
 }
addedpallets/refungible/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/pallets/refungible/CHANGELOG.md
@@ -0,0 +1,18 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [v0.1.2] - 2022-07-14
+
+### Other changes
+
+feat(refungible-pallet): add ERC-20 EVM API for RFT token pieces ([#413](https://github.com/UniqueNetwork/unique-chain/pull/413))
+test(refungible-pallet): add tests for ERC-20 EVM API for RFT token pieces ([#413](https://github.com/UniqueNetwork/unique-chain/pull/413))
+
+## [v0.1.1] - 2022-07-14
+
+### Other changes
+
+- feat: RPC method `token_owners` returning 10 owners in no particular order.
+
+This was an internal request to improve the web interface and support fractionalization event.
modifiedpallets/refungible/Cargo.tomldiffbeforeafterboth
--- a/pallets/refungible/Cargo.toml
+++ b/pallets/refungible/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pallet-refungible"
-version = "0.1.0"
+version = "0.1.2"
 license = "GPLv3"
 edition = "2021"
 
@@ -11,36 +11,43 @@
 version = '3.1.2'
 
 [dependencies]
-frame-support = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.24" }
-frame-system = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.24" }
-sp-runtime = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.24" }
-sp-std = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.24" }
-sp-core = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.24" }
-pallet-evm = { default-features = false, git = "https://github.com/uniquenetwork/frontier", branch = "unique-polkadot-v0.9.24" }
+evm-coder = { default-features = false, path = '../../crates/evm-coder' }
+pallet-evm-coder-substrate = { default-features = false, path = '../../pallets/evm-coder-substrate' }
 pallet-common = { default-features = false, path = '../common' }
 pallet-structure = { default-features = false, path = '../structure' }
+struct-versioning = { path = "../../crates/struct-versioning" }
 up-data-structs = { default-features = false, path = '../../primitives/data-structs' }
+
+ethereum = { version = "0.12.0", default-features = false }
+scale-info = { version = "2.0.1", default-features = false, features = ["derive",] }
+
 frame-benchmarking = { default-features = false, optional = true, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.24" }
-scale-info = { version = "2.0.1", default-features = false, features = [
-    "derive",
-] }
-struct-versioning = { path = "../../crates/struct-versioning" }
+frame-support = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.24" }
+frame-system = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.24" }
+pallet-evm = { default-features = false, git = "https://github.com/uniquenetwork/frontier", branch = "unique-polkadot-v0.9.24" }
+sp-core = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.24" }
+sp-runtime = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.24" }
+sp-std = { default-features = false, git = "https://github.com/paritytech/substrate", branch = "polkadot-v0.9.24" }
 
 [features]
 default = ["std"]
 std = [
+    "ethereum/std",
+    "evm-coder/std",
+    'frame-benchmarking/std',
     "frame-support/std",
     "frame-system/std",
+    "pallet-common/std",
+    "pallet-evm/std",
+    "pallet-evm-coder-substrate/std",
+    "pallet-structure/std",
     "sp-runtime/std",
     "sp-std/std",
     "up-data-structs/std",
-    "pallet-common/std",
-    "pallet-structure/std",
-    'frame-benchmarking/std',
-    "pallet-evm/std",
 ]
 runtime-benchmarks = [
     'frame-benchmarking',
     'frame-support/runtime-benchmarks',
     'frame-system/runtime-benchmarks',
+    'up-data-structs/runtime-benchmarks',
 ]
addedpallets/refungible/Changelog.mddiffbeforeafterboth
--- /dev/null
+++ b/pallets/refungible/Changelog.md
@@ -0,0 +1,3 @@
+### 0.1.1
+---
+* Added support for properties for RFT collections and tokens.
modifiedpallets/refungible/src/benchmarking.rsdiffbeforeafterboth
--- a/pallets/refungible/src/benchmarking.rs
+++ b/pallets/refungible/src/benchmarking.rs
@@ -18,9 +18,12 @@
 use crate::{Pallet, Config, RefungibleHandle};
 
 use sp_std::prelude::*;
-use pallet_common::benchmarking::{create_collection_raw, create_data};
+use pallet_common::benchmarking::{create_collection_raw, property_key, property_value, create_data};
 use frame_benchmarking::{benchmarks, account};
-use up_data_structs::{CollectionMode, MAX_ITEMS_PER_BATCH, CUSTOM_DATA_LIMIT, budget::Unlimited};
+use up_data_structs::{
+	CollectionMode, MAX_ITEMS_PER_BATCH, MAX_PROPERTIES_PER_ITEM, CUSTOM_DATA_LIMIT,
+	budget::Unlimited,
+};
 use pallet_common::bench_init;
 use core::convert::TryInto;
 use core::iter::IntoIterator;
@@ -38,6 +41,7 @@
 			.collect::<BTreeMap<_, _>>()
 			.try_into()
 			.unwrap(),
+		properties: Default::default(),
 	}
 }
 fn create_max_item<T: Config>(
@@ -204,6 +208,68 @@
 		<Pallet<T>>::set_allowance(&collection, &sender, &burner, item, 200)?;
 	}: {<Pallet<T>>::burn_from(&collection, &burner, &sender, item, 200, &Unlimited)?}
 
+	set_token_property_permissions {
+		let b in 0..MAX_PROPERTIES_PER_ITEM;
+		bench_init!{
+			owner: sub; collection: collection(owner);
+			owner: cross_from_sub;
+		};
+		let perms = (0..b).map(|k| PropertyKeyPermission {
+			key: property_key(k as usize),
+			permission: PropertyPermission {
+				mutable: false,
+				collection_admin: false,
+				token_owner: false,
+			},
+		}).collect::<Vec<_>>();
+	}: {<Pallet<T>>::set_token_property_permissions(&collection, &owner, perms)?}
+
+	set_token_properties {
+		let b in 0..MAX_PROPERTIES_PER_ITEM;
+		bench_init!{
+			owner: sub; collection: collection(owner);
+			owner: cross_from_sub;
+		};
+		let perms = (0..b).map(|k| PropertyKeyPermission {
+			key: property_key(k as usize),
+			permission: PropertyPermission {
+				mutable: false,
+				collection_admin: true,
+				token_owner: true,
+			},
+		}).collect::<Vec<_>>();
+		<Pallet<T>>::set_token_property_permissions(&collection, &owner, perms)?;
+		let props = (0..b).map(|k| Property {
+			key: property_key(k as usize),
+			value: property_value(),
+		}).collect::<Vec<_>>();
+		let item = create_max_item(&collection, &owner, [(owner.clone(), 200)])?;
+	}: {<Pallet<T>>::set_token_properties(&collection, &owner, item, props.into_iter(), false, &Unlimited)?}
+
+	delete_token_properties {
+		let b in 0..MAX_PROPERTIES_PER_ITEM;
+		bench_init!{
+			owner: sub; collection: collection(owner);
+			owner: cross_from_sub;
+		};
+		let perms = (0..b).map(|k| PropertyKeyPermission {
+			key: property_key(k as usize),
+			permission: PropertyPermission {
+				mutable: true,
+				collection_admin: true,
+				token_owner: true,
+			},
+		}).collect::<Vec<_>>();
+		<Pallet<T>>::set_token_property_permissions(&collection, &owner, perms)?;
+		let props = (0..b).map(|k| Property {
+			key: property_key(k as usize),
+			value: property_value(),
+		}).collect::<Vec<_>>();
+		let item = create_max_item(&collection, &owner, [(owner.clone(), 200)])?;
+		<Pallet<T>>::set_token_properties(&collection, &owner, item, props.into_iter(), false, &Unlimited)?;
+		let to_delete = (0..b).map(|k| property_key(k as usize)).collect::<Vec<_>>();
+	}: {<Pallet<T>>::delete_token_properties(&collection, &owner, item, to_delete.into_iter(), &Unlimited)?}
+
 	repartition_item {
 		bench_init!{
 			owner: sub; collection: collection(owner);
modifiedpallets/refungible/src/common.rsdiffbeforeafterboth
--- a/pallets/refungible/src/common.rs
+++ b/pallets/refungible/src/common.rs
@@ -20,9 +20,12 @@
 use frame_support::{dispatch::DispatchResultWithPostInfo, ensure, fail, weights::Weight, traits::Get};
 use up_data_structs::{
 	CollectionId, TokenId, CreateItemExData, CreateRefungibleExData, budget::Budget, Property,
-	PropertyKey, PropertyValue, PropertyKeyPermission, CreateItemData,
+	PropertyKey, PropertyValue, PropertyKeyPermission, CreateItemData, CollectionPropertiesVec,
+};
+use pallet_common::{
+	CommonCollectionOperations, CommonWeightInfo, RefungibleExtensions, with_weight,
+	weights::WeightInfo as _,
 };
-use pallet_common::{CommonCollectionOperations, CommonWeightInfo, RefungibleExtensions, with_weight};
 use pallet_structure::Error as StructureError;
 use sp_runtime::{DispatchError};
 use sp_std::{vec::Vec, vec};
@@ -41,6 +44,14 @@
 	};
 }
 
+fn properties_weight<T: Config>(properties: &CollectionPropertiesVec) -> u64 {
+	if properties.len() > 0 {
+		<CommonWeights<T>>::set_token_properties(properties.len() as u32)
+	} else {
+		0
+	}
+}
+
 pub struct CommonWeights<T: Config>(PhantomData<T>);
 impl<T: Config> CommonWeightInfo<T::CrossAccountId> for CommonWeights<T> {
 	fn create_item() -> Weight {
@@ -48,16 +59,31 @@
 	}
 
 	fn create_multiple_items(data: &[CreateItemData]) -> Weight {
-		<SelfWeightOf<T>>::create_multiple_items(data.len() as u32)
+		<SelfWeightOf<T>>::create_multiple_items(data.len() as u32).saturating_add(
+			data.iter()
+				.map(|data| match data {
+					CreateItemData::ReFungible(rft_data) => {
+						properties_weight::<T>(&rft_data.properties)
+					}
+					_ => 0,
+				})
+				.fold(0, |a, b| a.saturating_add(b)),
+		)
 	}
 
 	fn create_multiple_items_ex(call: &CreateItemExData<T::CrossAccountId>) -> Weight {
 		match call {
 			CreateItemExData::RefungibleMultipleOwners(i) => {
 				<SelfWeightOf<T>>::create_multiple_items_ex_multiple_owners(i.users.len() as u32)
+					.saturating_add(properties_weight::<T>(&i.properties))
 			}
 			CreateItemExData::RefungibleMultipleItems(i) => {
 				<SelfWeightOf<T>>::create_multiple_items_ex_multiple_items(i.len() as u32)
+					.saturating_add(
+						i.iter()
+							.map(|d| properties_weight::<T>(&d.properties))
+							.fold(0, |a, b| a.saturating_add(b)),
+					)
 			}
 			_ => 0,
 		}
@@ -67,29 +93,24 @@
 		max_weight_of!(burn_item_partial(), burn_item_fully())
 	}
 
-	fn set_collection_properties(_amount: u32) -> Weight {
-		// Error
-		0
+	fn set_collection_properties(amount: u32) -> Weight {
+		<pallet_common::SelfWeightOf<T>>::set_collection_properties(amount)
 	}
 
-	fn delete_collection_properties(_amount: u32) -> Weight {
-		// Error
-		0
+	fn delete_collection_properties(amount: u32) -> Weight {
+		<pallet_common::SelfWeightOf<T>>::delete_collection_properties(amount)
 	}
 
-	fn set_token_properties(_amount: u32) -> Weight {
-		// Error
-		0
+	fn set_token_properties(amount: u32) -> Weight {
+		<SelfWeightOf<T>>::set_token_properties(amount)
 	}
 
-	fn delete_token_properties(_amount: u32) -> Weight {
-		// Error
-		0
+	fn delete_token_properties(amount: u32) -> Weight {
+		<SelfWeightOf<T>>::delete_token_properties(amount)
 	}
 
-	fn set_token_property_permissions(_amount: u32) -> Weight {
-		// Error
-		0
+	fn set_token_property_permissions(amount: u32) -> Weight {
+		<SelfWeightOf<T>>::set_token_property_permissions(amount)
 	}
 
 	fn transfer() -> Weight {
@@ -140,11 +161,14 @@
 				out.insert(to.clone(), data.pieces);
 				out.try_into().expect("limit > 0")
 			},
+			properties: data.properties,
 		}),
 		_ => fail!(<Error<T>>::NotRefungibleDataUsedToMintFungibleCollectionToken),
 	}
 }
 
+/// Implementation of `CommonCollectionOperations` for `RefungibleHandle`. It wraps Refungible Pallete
+/// methods and adds weight info.
 impl<T: Config> CommonCollectionOperations<T> for RefungibleHandle<T> {
 	fn create_item(
 		&self,
@@ -295,46 +319,85 @@
 
 	fn set_collection_properties(
 		&self,
-		_sender: T::CrossAccountId,
-		_property: Vec<Property>,
+		sender: T::CrossAccountId,
+		properties: Vec<Property>,
 	) -> DispatchResultWithPostInfo {
-		fail!(<Error<T>>::SettingPropertiesNotAllowed)
+		let weight = <CommonWeights<T>>::set_collection_properties(properties.len() as u32);
+
+		with_weight(
+			<Pallet<T>>::set_collection_properties(self, &sender, properties),
+			weight,
+		)
 	}
 
 	fn delete_collection_properties(
 		&self,
-		_sender: &T::CrossAccountId,
-		_property_keys: Vec<PropertyKey>,
+		sender: &T::CrossAccountId,
+		property_keys: Vec<PropertyKey>,
 	) -> DispatchResultWithPostInfo {
-		fail!(<Error<T>>::SettingPropertiesNotAllowed)
+		let weight = <CommonWeights<T>>::delete_collection_properties(property_keys.len() as u32);
+
+		with_weight(
+			<Pallet<T>>::delete_collection_properties(self, sender, property_keys),
+			weight,
+		)
 	}
 
 	fn set_token_properties(
 		&self,
-		_sender: T::CrossAccountId,
-		_token_id: TokenId,
-		_property: Vec<Property>,
-		_nesting_budget: &dyn Budget,
+		sender: T::CrossAccountId,
+		token_id: TokenId,
+		properties: Vec<Property>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
-		fail!(<Error<T>>::SettingPropertiesNotAllowed)
+		let weight = <CommonWeights<T>>::set_token_properties(properties.len() as u32);
+
+		with_weight(
+			<Pallet<T>>::set_token_properties(
+				self,
+				&sender,
+				token_id,
+				properties.into_iter(),
+				false,
+				nesting_budget,
+			),
+			weight,
+		)
 	}
 
 	fn set_token_property_permissions(
 		&self,
-		_sender: &T::CrossAccountId,
-		_property_permissions: Vec<PropertyKeyPermission>,
+		sender: &T::CrossAccountId,
+		property_permissions: Vec<PropertyKeyPermission>,
 	) -> DispatchResultWithPostInfo {
-		fail!(<Error<T>>::SettingPropertiesNotAllowed)
+		let weight =
+			<CommonWeights<T>>::set_token_property_permissions(property_permissions.len() as u32);
+
+		with_weight(
+			<Pallet<T>>::set_token_property_permissions(self, sender, property_permissions),
+			weight,
+		)
 	}
 
 	fn delete_token_properties(
 		&self,
-		_sender: T::CrossAccountId,
-		_token_id: TokenId,
-		_property_keys: Vec<PropertyKey>,
-		_nesting_budget: &dyn Budget,
+		sender: T::CrossAccountId,
+		token_id: TokenId,
+		property_keys: Vec<PropertyKey>,
+		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo {
-		fail!(<Error<T>>::SettingPropertiesNotAllowed)
+		let weight = <CommonWeights<T>>::delete_token_properties(property_keys.len() as u32);
+
+		with_weight(
+			<Pallet<T>>::delete_token_properties(
+				self,
+				&sender,
+				token_id,
+				property_keys.into_iter(),
+				nesting_budget,
+			),
+			weight,
+		)
 	}
 
 	fn check_nesting(
@@ -371,8 +434,13 @@
 		TokenId(<TokensMinted<T>>::get(self.id))
 	}
 
-	fn token_owner(&self, _token: TokenId) -> Option<T::CrossAccountId> {
-		None
+	fn token_owner(&self, token: TokenId) -> Option<T::CrossAccountId> {
+		<Pallet<T>>::token_owner(self.id, token)
+	}
+
+	/// Returns 10 token in no particular order.
+	fn token_owners(&self, token: TokenId) -> Vec<T::CrossAccountId> {
+		<Pallet<T>>::token_owners(self.id, token).unwrap_or_default()
 	}
 
 	fn token_property(&self, _token_id: TokenId, _key: &PropertyKey) -> Option<PropertyValue> {
modifiedpallets/refungible/src/erc.rsdiffbeforeafterboth
--- a/pallets/refungible/src/erc.rs
+++ b/pallets/refungible/src/erc.rs
@@ -14,34 +14,35 @@
 // You should have received a copy of the GNU General Public License
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
-use up_data_structs::TokenId;
-use pallet_common::erc::CommonEvmHandler;
-use pallet_evm::PrecompileHandle;
+extern crate alloc;
+use evm_coder::{generate_stubgen, solidity_interface, types::*};
 
-use crate::{Config, RefungibleHandle};
+use pallet_common::{CollectionHandle, erc::CollectionCall, erc::CommonEvmHandler};
 
-impl<T: Config> CommonEvmHandler for RefungibleHandle<T> {
-	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueRefungible.raw");
+use pallet_evm::PrecompileHandle;
+use pallet_evm_coder_substrate::call;
 
-	fn call(
-		self,
-		_handle: &mut impl PrecompileHandle,
-	) -> Option<pallet_common::erc::PrecompileResult> {
-		// TODO: Implement RFT variant of ERC721
-		None
-	}
-}
+use crate::{Config, RefungibleHandle};
 
-pub struct RefungibleTokenHandle<T: Config>(pub RefungibleHandle<T>, pub TokenId);
+#[solidity_interface(
+	name = "UniqueRFT",
+	is(via("CollectionHandle<T>", common_mut, Collection),)
+)]
+impl<T: Config> RefungibleHandle<T> where T::AccountId: From<[u8; 32]> {}
 
-impl<T: Config> CommonEvmHandler for RefungibleTokenHandle<T> {
-	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueRefungibleToken.raw");
+// Not a tests, but code generators
+generate_stubgen!(gen_impl, UniqueRFTCall<()>, true);
+generate_stubgen!(gen_iface, UniqueRFTCall<()>, false);
 
+impl<T: Config> CommonEvmHandler for RefungibleHandle<T>
+where
+	T::AccountId: From<[u8; 32]>,
+{
+	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueRefungible.raw");
 	fn call(
 		self,
-		_handle: &mut impl PrecompileHandle,
+		handle: &mut impl PrecompileHandle,
 	) -> Option<pallet_common::erc::PrecompileResult> {
-		// TODO: Implement RFT variant of ERC20
-		None
+		call::<T, UniqueRFTCall<T>, _, _>(handle, self)
 	}
 }
addedpallets/refungible/src/erc_token.rsdiffbeforeafterboth
--- /dev/null
+++ b/pallets/refungible/src/erc_token.rs
@@ -0,0 +1,257 @@
+// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.
+// This file is part of Unique Network.
+
+// Unique Network is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Unique Network is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
+
+//! # Refungible Pallet EVM API for token pieces
+//!
+//! Provides ERC-20 standart support implementation and EVM API for unique extensions for Refungible Pallet.
+//! Method implementations are mostly doing parameter conversion and calling Nonfungible Pallet methods.
+
+extern crate alloc;
+use core::{
+	char::{REPLACEMENT_CHARACTER, decode_utf16},
+	convert::TryInto,
+	ops::Deref,
+};
+use evm_coder::{ToLog, execution::*, generate_stubgen, solidity_interface, types::*, weight};
+use pallet_common::{
+	CommonWeightInfo,
+	erc::{CommonEvmHandler, PrecompileResult},
+};
+use pallet_evm::{account::CrossAccountId, PrecompileHandle};
+use pallet_evm_coder_substrate::{call, dispatch_to_evm, WithRecorder};
+use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};
+use sp_std::vec::Vec;
+use up_data_structs::TokenId;
+
+use crate::{
+	Allowance, Balance, common::CommonWeights, Config, Pallet, RefungibleHandle, SelfWeightOf,
+	weights::WeightInfo, TotalSupply,
+};
+
+pub struct RefungibleTokenHandle<T: Config>(pub RefungibleHandle<T>, pub TokenId);
+
+#[derive(ToLog)]
+pub enum ERC20Events {
+	/// @dev This event is emitted when the amount of tokens (value) is sent
+	/// from the from address to the to address. In the case of minting new
+	/// tokens, the transfer is usually from the 0 address while in the case
+	/// of burning tokens the transfer is to 0.
+	Transfer {
+		#[indexed]
+		from: address,
+		#[indexed]
+		to: address,
+		value: uint256,
+	},
+	/// @dev This event is emitted when the amount of tokens (value) is approved
+	/// by the owner to be used by the spender.
+	Approval {
+		#[indexed]
+		owner: address,
+		#[indexed]
+		spender: address,
+		value: uint256,
+	},
+}
+
+/// @title Standard ERC20 token
+///
+/// @dev Implementation of the basic standard token.
+/// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
+#[solidity_interface(name = "ERC20", events(ERC20Events))]
+impl<T: Config> RefungibleTokenHandle<T> {
+	/// @return the name of the token.
+	fn name(&self) -> Result<string> {
+		Ok(decode_utf16(self.name.iter().copied())
+			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))
+			.collect::<string>())
+	}
+
+	/// @return the symbol of the token.
+	fn symbol(&self) -> Result<string> {
+		Ok(string::from_utf8_lossy(&self.token_prefix).into())
+	}
+
+	/// @dev Total number of tokens in existence
+	fn total_supply(&self) -> Result<uint256> {
+		self.consume_store_reads(1)?;
+		Ok(<TotalSupply<T>>::get((self.id, self.1)).into())
+	}
+
+	/// @dev Not supported
+	fn decimals(&self) -> Result<uint8> {
+		// Decimals aren't supported for refungible tokens
+		Ok(0)
+	}
+
+	/// @dev Gets the balance of the specified address.
+	/// @param owner The address to query the balance of.
+	/// @return An uint256 representing the amount owned by the passed address.
+	fn balance_of(&self, owner: address) -> Result<uint256> {
+		self.consume_store_reads(1)?;
+		let owner = T::CrossAccountId::from_eth(owner);
+		let balance = <Balance<T>>::get((self.id, self.1, owner));
+		Ok(balance.into())
+	}
+
+	/// @dev Transfer token for a specified address
+	/// @param to The address to transfer to.
+	/// @param amount The amount to be transferred.
+	#[weight(<CommonWeights<T>>::transfer())]
+	fn transfer(&mut self, caller: caller, to: address, amount: uint256) -> Result<bool> {
+		let caller = T::CrossAccountId::from_eth(caller);
+		let to = T::CrossAccountId::from_eth(to);
+		let amount = amount.try_into().map_err(|_| "amount overflow")?;
+		let budget = self
+			.recorder
+			.weight_calls_budget(<StructureWeight<T>>::find_parent());
+
+		<Pallet<T>>::transfer(self, &caller, &to, self.1, amount, &budget)
+			.map_err(|_| "transfer error")?;
+		Ok(true)
+	}
+
+	/// @dev Transfer tokens from one address to another
+	/// @param from address The address which you want to send tokens from
+	/// @param to address The address which you want to transfer to
+	/// @param amount uint256 the amount of tokens to be transferred
+	#[weight(<CommonWeights<T>>::transfer_from())]
+	fn transfer_from(
+		&mut self,
+		caller: caller,
+		from: address,
+		to: address,
+		amount: uint256,
+	) -> Result<bool> {
+		let caller = T::CrossAccountId::from_eth(caller);
+		let from = T::CrossAccountId::from_eth(from);
+		let to = T::CrossAccountId::from_eth(to);
+		let amount = amount.try_into().map_err(|_| "amount overflow")?;
+		let budget = self
+			.recorder
+			.weight_calls_budget(<StructureWeight<T>>::find_parent());
+
+		<Pallet<T>>::transfer_from(self, &caller, &from, &to, self.1, amount, &budget)
+			.map_err(dispatch_to_evm::<T>)?;
+		Ok(true)
+	}
+
+	/// @dev Approve the passed address to spend the specified amount of tokens on behalf of `msg.sender`.
+	/// Beware that changing an allowance with this method brings the risk that someone may use both the old
+	/// and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
+	/// race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
+	/// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
+	/// @param spender The address which will spend the funds.
+	/// @param amount The amount of tokens to be spent.
+	#[weight(<SelfWeightOf<T>>::approve())]
+	fn approve(&mut self, caller: caller, spender: address, amount: uint256) -> Result<bool> {
+		let caller = T::CrossAccountId::from_eth(caller);
+		let spender = T::CrossAccountId::from_eth(spender);
+		let amount = amount.try_into().map_err(|_| "amount overflow")?;
+
+		<Pallet<T>>::set_allowance(self, &caller, &spender, self.1, amount)
+			.map_err(dispatch_to_evm::<T>)?;
+		Ok(true)
+	}
+
+	/// @dev Function to check the amount of tokens that an owner allowed to a spender.
+	/// @param owner address The address which owns the funds.
+	/// @param spender address The address which will spend the funds.
+	/// @return A uint256 specifying the amount of tokens still available for the spender.
+	fn allowance(&self, owner: address, spender: address) -> Result<uint256> {
+		self.consume_store_reads(1)?;
+		let owner = T::CrossAccountId::from_eth(owner);
+		let spender = T::CrossAccountId::from_eth(spender);
+
+		Ok(<Allowance<T>>::get((self.id, self.1, owner, spender)).into())
+	}
+}
+
+#[solidity_interface(name = "ERC20UniqueExtensions")]
+impl<T: Config> RefungibleTokenHandle<T> {
+	/// @dev Function that burns an amount of the token of a given account,
+	/// deducting from the sender's allowance for said account.
+	/// @param from The account whose tokens will be burnt.
+	/// @param amount The amount that will be burnt.
+	#[weight(<SelfWeightOf<T>>::burn_from())]
+	fn burn_from(&mut self, caller: caller, from: address, amount: uint256) -> Result<bool> {
+		let caller = T::CrossAccountId::from_eth(caller);
+		let from = T::CrossAccountId::from_eth(from);
+		let amount = amount.try_into().map_err(|_| "amount overflow")?;
+		let budget = self
+			.recorder
+			.weight_calls_budget(<StructureWeight<T>>::find_parent());
+
+		<Pallet<T>>::burn_from(self, &caller, &from, self.1, amount, &budget)
+			.map_err(dispatch_to_evm::<T>)?;
+		Ok(true)
+	}
+
+	/// @dev Function that changes total amount of the tokens.
+	///  Throws if `msg.sender` doesn't owns all of the tokens.
+	/// @param amount New total amount of the tokens.
+	#[weight(<SelfWeightOf<T>>::repartition_item())]
+	fn repartition(&mut self, caller: caller, amount: uint256) -> Result<bool> {
+		let caller = T::CrossAccountId::from_eth(caller);
+		let amount = amount.try_into().map_err(|_| "amount overflow")?;
+
+		<Pallet<T>>::repartition(self, &caller, self.1, amount).map_err(dispatch_to_evm::<T>)?;
+		Ok(true)
+	}
+}
+
+impl<T: Config> RefungibleTokenHandle<T> {
+	pub fn into_inner(self) -> RefungibleHandle<T> {
+		self.0
+	}
+	pub fn common_mut(&mut self) -> &mut RefungibleHandle<T> {
+		&mut self.0
+	}
+}
+
+impl<T: Config> WithRecorder<T> for RefungibleTokenHandle<T> {
+	fn recorder(&self) -> &pallet_evm_coder_substrate::SubstrateRecorder<T> {
+		self.0.recorder()
+	}
+	fn into_recorder(self) -> pallet_evm_coder_substrate::SubstrateRecorder<T> {
+		self.0.into_recorder()
+	}
+}
+
+impl<T: Config> Deref for RefungibleTokenHandle<T> {
+	type Target = RefungibleHandle<T>;
+
+	fn deref(&self) -> &Self::Target {
+		&self.0
+	}
+}
+
+#[solidity_interface(name = "UniqueRefungibleToken", is(ERC20, ERC20UniqueExtensions,))]
+impl<T: Config> RefungibleTokenHandle<T> where T::AccountId: From<[u8; 32]> {}
+
+generate_stubgen!(gen_impl, UniqueRefungibleTokenCall<()>, true);
+generate_stubgen!(gen_iface, UniqueRefungibleTokenCall<()>, false);
+
+impl<T: Config> CommonEvmHandler for RefungibleTokenHandle<T>
+where
+	T::AccountId: From<[u8; 32]>,
+{
+	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueRefungibleToken.raw");
+
+	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {
+		call::<T, UniqueRefungibleTokenCall<T>, _, _>(handle, self)
+	}
+}
modifiedpallets/refungible/src/lib.rsdiffbeforeafterboth
--- a/pallets/refungible/src/lib.rs
+++ b/pallets/refungible/src/lib.rs
@@ -14,32 +14,113 @@
 // You should have received a copy of the GNU General Public License
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
+//! # Refungible Pallet
+//!
+//! The Refungible pallet provides functionality for handling refungible collections and tokens.
+//!
+//! - [`Config`]
+//! - [`RefungibleHandle`]
+//! - [`Pallet`]
+//! - [`CommonWeights`](common::CommonWeights)
+//!
+//! ## Overview
+//!
+//! The Refungible pallet provides functions for:
+//!
+//! - RFT collection creation and removal
+//! - Minting and burning of RFT tokens
+//! - Partition and repartition of RFT tokens
+//! - Retrieving number of pieces of RFT token
+//! - Retrieving account balances
+//! - Transfering RFT token pieces
+//! - Burning RFT token pieces
+//! - Setting and checking allowance for RFT tokens
+//!
+//! ### Terminology
+//!
+//! - **RFT token:** Non fungible token that was partitioned to pieces. If an account owns all
+//!   of the RFT token pieces than it owns the RFT token and can repartition it.
+//!
+//! - **RFT Collection:** A collection of RFT tokens. All RFT tokens are part of a collection.
+//!   Each collection has its own settings and set of permissions.
+//!
+//! - **RFT token piece:** A fungible part of an RFT token.
+//!
+//! - **Balance:** RFT token pieces owned by an account
+//!
+//! - **Allowance:** Maximum number of RFT token pieces that one account is allowed to
+//!   transfer from the balance of another account
+//!
+//! - **Burning:** The process of “deleting” a token from a collection or removing token pieces from
+//!   an account balance.
+//!
+//! ### Implementations
+//!
+//! The Refungible pallet provides implementations for the following traits. If these traits provide
+//! the functionality that you need, then you can avoid coupling with the Refungible pallet.
+//!
+//! - [`CommonWeightInfo`](pallet_common::CommonWeightInfo): Functions for retrieval of transaction weight
+//! - [`CommonCollectionOperations`](pallet_common::CommonCollectionOperations): Functions for dealing
+//!   with collections
+//! - [`RefungibleExtensions`](pallet_common::RefungibleExtensions): Functions specific for refungible
+//!   collection
+//!
+//! ## Interface
+//!
+//! ### Dispatchable Functions
+//!
+//! - `init_collection` - Create RFT collection. RFT collection can be configured to allow or deny access for
+//!   some accounts.
+//! - `destroy_collection` - Destroy exising RFT collection. There should be no tokens in the collection.
+//! - `burn` - Burn some amount of RFT token pieces owned by account. Burns the RFT token if no pieces left.
+//! - `transfer` - Transfer some amount of RFT token pieces. Transfers should be enabled for RFT collection.
+//!   Nests the RFT token if RFT token pieces are sent to another token.
+//! - `create_item` - Mint RFT token in collection. Sender should have permission to mint tokens.
+//! - `set_allowance` - Set allowance for another account to transfer balance from sender's account.
+//! - `repartition` - Repartition token to selected number of pieces. Sender should own all existing pieces.
+//!
+//! ## Assumptions
+//!
+//! * Total number of pieces for one token shouldn't exceed `up_data_structs::MAX_REFUNGIBLE_PIECES`.
+//! * Total number of tokens of all types shouldn't be greater than `up_data_structs::MAX_TOKEN_PREFIX_LENGTH`.
+//! * Sender should be in collection's allow list to perform operations on tokens.
+
 #![cfg_attr(not(feature = "std"), no_std)]
 
-use frame_support::{ensure, BoundedVec};
-use up_data_structs::{
-	AccessMode, CollectionId, CustomDataLimit, MAX_REFUNGIBLE_PIECES, TokenId,
-	CreateCollectionData, CreateRefungibleExData, mapping::TokenAddressMapping, budget::Budget,
+use crate::erc_token::ERC20Events;
+
+use codec::{Encode, Decode, MaxEncodedLen};
+use core::ops::Deref;
+use evm_coder::ToLog;
+use frame_support::{BoundedVec, ensure, fail, storage::with_transaction, transactional};
+use pallet_evm::{account::CrossAccountId, Pallet as PalletEvm};
+use pallet_evm_coder_substrate::WithRecorder;
+use pallet_common::{
+	CommonCollectionOperations, Error as CommonError, Event as CommonEvent, Pallet as PalletCommon,
 };
-use pallet_evm::account::CrossAccountId;
-use pallet_common::{Error as CommonError, Event as CommonEvent, Pallet as PalletCommon};
 use pallet_structure::Pallet as PalletStructure;
-use sp_runtime::{ArithmeticError, DispatchError, DispatchResult};
+use scale_info::TypeInfo;
+use sp_core::H160;
+use sp_runtime::{ArithmeticError, DispatchError, DispatchResult, TransactionOutcome};
 use sp_std::{vec::Vec, vec, collections::btree_map::BTreeMap};
-use core::ops::Deref;
-use codec::{Encode, Decode, MaxEncodedLen};
-use scale_info::TypeInfo;
+use up_data_structs::{
+	AccessMode, budget::Budget, CollectionId, CreateCollectionData, CreateRefungibleExData,
+	CustomDataLimit, mapping::TokenAddressMapping, MAX_REFUNGIBLE_PIECES, TokenId, Property,
+	PropertyKey, PropertyKeyPermission, PropertyPermission, PropertyScope, PropertyValue,
+	TrySetProperty,
+};
 
 pub use pallet::*;
 #[cfg(feature = "runtime-benchmarks")]
 pub mod benchmarking;
 pub mod common;
 pub mod erc;
+pub mod erc_token;
 pub mod weights;
 pub(crate) type SelfWeightOf<T> = <T as Config>::WeightInfo;
 
-/// Token data, stored independently from other data used to describe it.
-/// Notably contains the token metadata.
+/// Token data, stored independently from other data used to describe it
+/// for the convenience of database access. Notably contains the token metadata.
 #[struct_versioning::versioned(version = 2, upper)]
 #[derive(Encode, Decode, Default, TypeInfo, MaxEncodedLen)]
 pub struct ItemData {
@@ -108,6 +189,16 @@
 
 	/// Amount of pieces a refungible token is split into.
 	#[pallet::storage]
+	#[pallet::getter(fn token_properties)]
+	pub type TokenProperties<T: Config> = StorageNMap<
+		Key = (Key<Twox64Concat, CollectionId>, Key<Twox64Concat, TokenId>),
+		Value = up_data_structs::Properties,
+		QueryKind = ValueQuery,
+		OnEmpty = up_data_structs::TokenProperties,
+	>;
+
+	/// Total amount of pieces for token
+	#[pallet::storage]
 	pub type TotalSupply<T: Config> = StorageNMap<
 		Key = (Key<Twox64Concat, CollectionId>, Key<Twox64Concat, TokenId>),
 		Value = u128,
@@ -138,7 +229,7 @@
 		QueryKind = ValueQuery,
 	>;
 
-	/// Amount of pieces of a token owned by an account.
+	/// Amount of token pieces owned by account.
 	#[pallet::storage]
 	pub type Balance<T: Config> = StorageNMap<
 		Key = (
@@ -151,7 +242,7 @@
 		QueryKind = ValueQuery,
 	>;
 
-	/// todo:doc
+	/// Allowance set by a token owner for another user to perform one of certain transactions on a number of pieces of a token.
 	#[pallet::storage]
 	pub type Allowance<T: Config> = StorageNMap<
 		Key = (
@@ -188,7 +279,11 @@
 	pub fn into_inner(self) -> pallet_common::CollectionHandle<T> {
 		self.0
 	}
+	pub fn common_mut(&mut self) -> &mut pallet_common::CollectionHandle<T> {
+		&mut self.0
+	}
 }
+
 impl<T: Config> Deref for RefungibleHandle<T> {
 	type Target = pallet_common::CollectionHandle<T>;
 
@@ -197,23 +292,75 @@
 	}
 }
 
+impl<T: Config> WithRecorder<T> for RefungibleHandle<T> {
+	fn recorder(&self) -> &pallet_evm_coder_substrate::SubstrateRecorder<T> {
+		self.0.recorder()
+	}
+	fn into_recorder(self) -> pallet_evm_coder_substrate::SubstrateRecorder<T> {
+		self.0.into_recorder()
+	}
+}
+
 impl<T: Config> Pallet<T> {
+	/// Get number of RFT tokens in collection
 	pub fn total_supply(collection: &RefungibleHandle<T>) -> u32 {
 		<TokensMinted<T>>::get(collection.id) - <TokensBurnt<T>>::get(collection.id)
 	}
+
+	/// Check that RFT token exists
+	///
+	/// - `token`: Token ID.
 	pub fn token_exists(collection: &RefungibleHandle<T>, token: TokenId) -> bool {
 		<TotalSupply<T>>::contains_key((collection.id, token))
 	}
+
+	pub fn set_scoped_token_property(
+		collection_id: CollectionId,
+		token_id: TokenId,
+		scope: PropertyScope,
+		property: Property,
+	) -> DispatchResult {
+		TokenProperties::<T>::try_mutate((collection_id, token_id), |properties| {
+			properties.try_scoped_set(scope, property.key, property.value)
+		})
+		.map_err(<CommonError<T>>::from)?;
+
+		Ok(())
+	}
+
+	pub fn set_scoped_token_properties(
+		collection_id: CollectionId,
+		token_id: TokenId,
+		scope: PropertyScope,
+		properties: impl Iterator<Item = Property>,
+	) -> DispatchResult {
+		TokenProperties::<T>::try_mutate((collection_id, token_id), |stored_properties| {
+			stored_properties.try_scoped_set_from_iter(scope, properties)
+		})
+		.map_err(<CommonError<T>>::from)?;
+
+		Ok(())
+	}
 }
 
 // unchecked calls skips any permission checks
 impl<T: Config> Pallet<T> {
+	/// Create RFT collection
+	///
+	/// `init_collection` will take non-refundable deposit for collection creation.
+	///
+	/// - `data`: Contains settings for collection limits and permissions.
 	pub fn init_collection(
 		owner: T::CrossAccountId,
 		data: CreateCollectionData<T::AccountId>,
 	) -> Result<CollectionId, DispatchError> {
 		<PalletCommon<T>>::init_collection(owner, data, false)
 	}
+
+	/// Destroy RFT collection
+	///
+	/// `destroy_collection` will throw error if collection contains any tokens.
+	/// Only owner can destroy collection.
 	pub fn destroy_collection(
 		collection: RefungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -245,13 +392,17 @@
 			.is_some()
 	}
 
-	pub fn burn_token(collection: &RefungibleHandle<T>, token_id: TokenId) -> DispatchResult {
+	pub fn burn_token_unchecked(
+		collection: &RefungibleHandle<T>,
+		token_id: TokenId,
+	) -> DispatchResult {
 		let burnt = <TokensBurnt<T>>::get(collection.id)
 			.checked_add(1)
 			.ok_or(ArithmeticError::Overflow)?;
 
 		<TokensBurnt<T>>::insert(collection.id, burnt);
 		<TokenData<T>>::remove((collection.id, token_id));
+		<TokenProperties<T>>::remove((collection.id, token_id));
 		<TotalSupply<T>>::remove((collection.id, token_id));
 		<Balance<T>>::remove_prefix((collection.id, token_id), None);
 		<Allowance<T>>::remove_prefix((collection.id, token_id), None);
@@ -259,6 +410,17 @@
 		Ok(())
 	}
 
+	/// Burn RFT token pieces
+	///
+	/// `burn` will decrease total amount of token pieces and amount owned by sender.
+	/// `burn` can be called even if there are multiple owners of the RFT token.
+	/// If sender wouldn't have any pieces left after `burn` than she will stop being
+	/// one of the owners of the token. If there is no account that owns any pieces of
+	/// the token than token will be burned too.
+	///
+	/// - `amount`: Amount of token pieces to burn.
+	/// - `token`: Token who's pieces should be burned
+	/// - `collection`: Collection that contains the token
 	pub fn burn(
 		collection: &RefungibleHandle<T>,
 		owner: &T::CrossAccountId,
@@ -286,7 +448,7 @@
 			<Owned<T>>::remove((collection.id, owner, token));
 			<PalletStructure<T>>::unnest_if_nested(owner, collection.id, token);
 			<AccountBalance<T>>::insert((collection.id, owner), account_balance);
-			Self::burn_token(collection, token)?;
+			Self::burn_token_unchecked(collection, token)?;
 			<PalletCommon<T>>::deposit_event(CommonEvent::ItemDestroyed(
 				collection.id,
 				token,
@@ -319,7 +481,18 @@
 			<Balance<T>>::insert((collection.id, token, owner), balance);
 		}
 		<TotalSupply<T>>::insert((collection.id, token), total_supply);
-		// TODO: ERC20 transfer event
+
+		<PalletEvm<T>>::deposit_log(
+			ERC20Events::Transfer {
+				from: *owner.as_eth(),
+				to: H160::default(),
+				value: amount.into(),
+			}
+			.to_log(T::EvmTokenAddressMapping::token_to_address(
+				collection.id,
+				token,
+			)),
+		);
 		<PalletCommon<T>>::deposit_event(CommonEvent::ItemDestroyed(
 			collection.id,
 			token,
@@ -329,6 +502,179 @@
 		Ok(())
 	}
 
+	#[transactional]
+	fn modify_token_properties(
+		collection: &RefungibleHandle<T>,
+		sender: &T::CrossAccountId,
+		token_id: TokenId,
+		properties: impl Iterator<Item = (PropertyKey, Option<PropertyValue>)>,
+		is_token_create: bool,
+		nesting_budget: &dyn Budget,
+	) -> DispatchResult {
+		let is_collection_admin = || collection.is_owner_or_admin(sender);
+		let is_token_owner = || -> Result<bool, DispatchError> {
+			let balance = collection.balance(sender.clone(), token_id);
+			let total_pieces: u128 =
+				Self::total_pieces(collection.id, token_id).unwrap_or(u128::MAX);
+			if balance != total_pieces {
+				return Ok(false);
+			}
+
+			let is_bundle_owner = <PalletStructure<T>>::check_indirectly_owned(
+				sender.clone(),
+				collection.id,
+				token_id,
+				None,
+				nesting_budget,
+			)?;
+
+			Ok(is_bundle_owner)
+		};
+
+		for (key, value) in properties {
+			let permission = <PalletCommon<T>>::property_permissions(collection.id)
+				.get(&key)
+				.cloned()
+				.unwrap_or_else(PropertyPermission::none);
+
+			let is_property_exists = TokenProperties::<T>::get((collection.id, token_id))
+				.get(&key)
+				.is_some();
+
+			match permission {
+				PropertyPermission { mutable: false, .. } if is_property_exists => {
+					return Err(<CommonError<T>>::NoPermission.into());
+				}
+
+				PropertyPermission {
+					collection_admin,
+					token_owner,
+					..
+				} => {
+					//TODO: investigate threats during public minting.
+					let is_token_create =
+						is_token_create && (collection_admin || token_owner) && value.is_some();
+					if !(is_token_create
+						|| (collection_admin && is_collection_admin())
+						|| (token_owner && is_token_owner()?))
+					{
+						fail!(<CommonError<T>>::NoPermission);
+					}
+				}
+			}
+
+			match value {
+				Some(value) => {
+					<TokenProperties<T>>::try_mutate((collection.id, token_id), |properties| {
+						properties.try_set(key.clone(), value)
+					})
+					.map_err(<CommonError<T>>::from)?;
+
+					<PalletCommon<T>>::deposit_event(CommonEvent::TokenPropertySet(
+						collection.id,
+						token_id,
+						key,
+					));
+				}
+				None => {
+					<TokenProperties<T>>::try_mutate((collection.id, token_id), |properties| {
+						properties.remove(&key)
+					})
+					.map_err(<CommonError<T>>::from)?;
+
+					<PalletCommon<T>>::deposit_event(CommonEvent::TokenPropertyDeleted(
+						collection.id,
+						token_id,
+						key,
+					));
+				}
+			}
+		}
+
+		Ok(())
+	}
+
+	pub fn set_token_properties(
+		collection: &RefungibleHandle<T>,
+		sender: &T::CrossAccountId,
+		token_id: TokenId,
+		properties: impl Iterator<Item = Property>,
+		is_token_create: bool,
+		nesting_budget: &dyn Budget,
+	) -> DispatchResult {
+		Self::modify_token_properties(
+			collection,
+			sender,
+			token_id,
+			properties.map(|p| (p.key, Some(p.value))),
+			is_token_create,
+			nesting_budget,
+		)
+	}
+
+	pub fn set_token_property(
+		collection: &RefungibleHandle<T>,
+		sender: &T::CrossAccountId,
+		token_id: TokenId,
+		property: Property,
+		nesting_budget: &dyn Budget,
+	) -> DispatchResult {
+		let is_token_create = false;
+
+		Self::set_token_properties(
+			collection,
+			sender,
+			token_id,
+			[property].into_iter(),
+			is_token_create,
+			nesting_budget,
+		)
+	}
+
+	pub fn delete_token_properties(
+		collection: &RefungibleHandle<T>,
+		sender: &T::CrossAccountId,
+		token_id: TokenId,
+		property_keys: impl Iterator<Item = PropertyKey>,
+		nesting_budget: &dyn Budget,
+	) -> DispatchResult {
+		let is_token_create = false;
+
+		Self::modify_token_properties(
+			collection,
+			sender,
+			token_id,
+			property_keys.into_iter().map(|key| (key, None)),
+			is_token_create,
+			nesting_budget,
+		)
+	}
+
+	pub fn delete_token_property(
+		collection: &RefungibleHandle<T>,
+		sender: &T::CrossAccountId,
+		token_id: TokenId,
+		property_key: PropertyKey,
+		nesting_budget: &dyn Budget,
+	) -> DispatchResult {
+		Self::delete_token_properties(
+			collection,
+			sender,
+			token_id,
+			[property_key].into_iter(),
+			nesting_budget,
+		)
+	}
+
+	/// Transfer RFT token pieces from one account to another.
+	///
+	/// If the sender is no longer owns any pieces after the `transfer` than she stops being an owner of the token.
+	///
+	/// - `from`: Owner of token pieces to transfer.
+	/// - `to`: Recepient of transfered token pieces.
+	/// - `amount`: Amount of token pieces to transfer.
+	/// - `token`: Token whos pieces should be transfered
+	/// - `collection`: Collection that contains the token
 	pub fn transfer(
 		collection: &RefungibleHandle<T>,
 		from: &T::CrossAccountId,
@@ -422,7 +768,17 @@
 			}
 		}
 
-		// TODO: ERC20 transfer event
+		<PalletEvm<T>>::deposit_log(
+			ERC20Events::Transfer {
+				from: *from.as_eth(),
+				to: *to.as_eth(),
+				value: amount.into(),
+			}
+			.to_log(T::EvmTokenAddressMapping::token_to_address(
+				collection.id,
+				token,
+			)),
+		);
 		<PalletCommon<T>>::deposit_event(CommonEvent::Transfer(
 			collection.id,
 			token,
@@ -433,6 +789,11 @@
 		Ok(())
 	}
 
+	/// Batched operation to create multiple RFT tokens.
+	///
+	/// Same as `create_item` but creates multiple tokens.
+	///
+	/// - `data`: Same as 'data` in `create_item` but contains data for multiple tokens.
 	pub fn create_multiple_items(
 		collection: &RefungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -517,34 +878,70 @@
 
 		// =========
 
+		with_transaction(|| {
+			for (i, data) in data.iter().enumerate() {
+				let token_id = first_token_id + i as u32 + 1;
+				<TotalSupply<T>>::insert((collection.id, token_id), totals[i]);
+
+				<TokenData<T>>::insert(
+					(collection.id, token_id),
+					ItemData {
+						const_data: data.const_data.clone(),
+					},
+				);
+
+				for (user, amount) in data.users.iter() {
+					if *amount == 0 {
+						continue;
+					}
+					<Balance<T>>::insert((collection.id, token_id, &user), amount);
+					<Owned<T>>::insert((collection.id, &user, TokenId(token_id)), true);
+					<PalletStructure<T>>::nest_if_sent_to_token_unchecked(
+						user,
+						collection.id,
+						TokenId(token_id),
+					);
+				}
+
+				if let Err(e) = Self::set_token_properties(
+					collection,
+					sender,
+					TokenId(token_id),
+					data.properties.clone().into_iter(),
+					true,
+					nesting_budget,
+				) {
+					return TransactionOutcome::Rollback(Err(e));
+				}
+			}
+			TransactionOutcome::Commit(Ok(()))
+		})?;
+
 		<TokensMinted<T>>::insert(collection.id, tokens_minted);
+
 		for (account, balance) in balances {
 			<AccountBalance<T>>::insert((collection.id, account), balance);
 		}
+
 		for (i, token) in data.into_iter().enumerate() {
 			let token_id = first_token_id + i as u32 + 1;
-			<TotalSupply<T>>::insert((collection.id, token_id), totals[i]);
-
-			<TokenData<T>>::insert(
-				(collection.id, token_id),
-				ItemData {
-					const_data: token.const_data,
-				},
-			);
 
 			for (user, amount) in token.users.into_iter() {
 				if amount == 0 {
 					continue;
 				}
-				<Balance<T>>::insert((collection.id, token_id, &user), amount);
-				<Owned<T>>::insert((collection.id, &user, TokenId(token_id)), true);
-				<PalletStructure<T>>::nest_if_sent_to_token_unchecked(
-					&user,
-					collection.id,
-					TokenId(token_id),
+
+				<PalletEvm<T>>::deposit_log(
+					ERC20Events::Transfer {
+						from: H160::default(),
+						to: *user.as_eth(),
+						value: amount.into(),
+					}
+					.to_log(T::EvmTokenAddressMapping::token_to_address(
+						collection.id,
+						TokenId(token_id),
+					)),
 				);
-
-				// TODO: ERC20 transfer event
 				<PalletCommon<T>>::deposit_event(CommonEvent::ItemCreated(
 					collection.id,
 					TokenId(token_id),
@@ -568,7 +965,18 @@
 		} else {
 			<Allowance<T>>::insert((collection.id, token, sender, spender), amount);
 		}
-		// TODO: ERC20 approval event
+
+		<PalletEvm<T>>::deposit_log(
+			ERC20Events::Approval {
+				owner: *sender.as_eth(),
+				spender: *spender.as_eth(),
+				value: amount.into(),
+			}
+			.to_log(T::EvmTokenAddressMapping::token_to_address(
+				collection.id,
+				token,
+			)),
+		);
 		<PalletCommon<T>>::deposit_event(CommonEvent::Approved(
 			collection.id,
 			token,
@@ -578,6 +986,9 @@
 		))
 	}
 
+	/// Set allowance for the spender to `transfer` or `burn` sender's token pieces.
+	///
+	/// - `amount`: Amount of token pieces the spender is allowed to `transfer` or `burn.
 	pub fn set_allowance(
 		collection: &RefungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -646,6 +1057,12 @@
 		Ok(allowance)
 	}
 
+	/// Transfer RFT token pieces from one account to another.
+	///
+	/// Same as the [`transfer`] but spender doesn't needs to be an owner of the token pieces.
+	/// The owner should set allowance for the spender to transfer pieces.
+	///
+	/// [`transfer`]: struct.Pallet.html#method.transfer
 	pub fn transfer_from(
 		collection: &RefungibleHandle<T>,
 		spender: &T::CrossAccountId,
@@ -667,6 +1084,12 @@
 		Ok(())
 	}
 
+	/// Burn RFT token pieces from the account.
+	///
+	/// Same as the [`burn`] but spender doesn't need to be an owner of the token pieces. The owner should
+	/// set allowance for the spender to burn pieces
+	///
+	/// [`burn`]: struct.Pallet.html#method.burn
 	pub fn burn_from(
 		collection: &RefungibleHandle<T>,
 		spender: &T::CrossAccountId,
@@ -687,7 +1110,13 @@
 		Ok(())
 	}
 
-	/// Delegated to `create_multiple_items`
+	/// Create RFT token.
+	///
+	/// The sender should be the owner/admin of the collection or collection should be configured
+	/// to allow public minting.
+	///
+	/// - `data`: Contains list of users who will become the owners of the token pieces and amount
+	///   of token pieces they will receive.
 	pub fn create_item(
 		collection: &RefungibleHandle<T>,
 		sender: &T::CrossAccountId,
@@ -697,6 +1126,13 @@
 		Self::create_multiple_items(collection, sender, vec![data], nesting_budget)
 	}
 
+	/// Repartition RFT token.
+	///
+	/// `repartition` will set token balance of the sender and total amount of token pieces.
+	/// Sender should own all of the token pieces. `repartition' could be done even if some
+	/// token pieces were burned before.
+	///
+	/// - `amount`: Total amount of token pieces that the token will have after `repartition`.
 	pub fn repartition(
 		collection: &RefungibleHandle<T>,
 		owner: &T::CrossAccountId,
@@ -709,19 +1145,119 @@
 		);
 		ensure!(amount > 0, <CommonError<T>>::TokenValueTooLow);
 		// Ensure user owns all pieces
-		let total_supply = <TotalSupply<T>>::get((collection.id, token));
+		let total_pieces = Self::total_pieces(collection.id, token).unwrap_or(u128::MAX);
 		let balance = <Balance<T>>::get((collection.id, token, owner));
 		ensure!(
-			total_supply == balance,
+			total_pieces == balance,
 			<Error<T>>::RepartitionWhileNotOwningAllPieces
 		);
 
 		<Balance<T>>::insert((collection.id, token, owner), amount);
 		<TotalSupply<T>>::insert((collection.id, token), amount);
+
+		if amount > total_pieces {
+			let mint_amount = amount - total_pieces;
+			<PalletEvm<T>>::deposit_log(
+				ERC20Events::Transfer {
+					from: H160::default(),
+					to: *owner.as_eth(),
+					value: mint_amount.into(),
+				}
+				.to_log(T::EvmTokenAddressMapping::token_to_address(
+					collection.id,
+					token,
+				)),
+			);
+			<PalletCommon<T>>::deposit_event(CommonEvent::ItemCreated(
+				collection.id,
+				token,
+				owner.clone(),
+				mint_amount,
+			));
+		} else if total_pieces > amount {
+			let burn_amount = total_pieces - amount;
+			<PalletEvm<T>>::deposit_log(
+				ERC20Events::Transfer {
+					from: *owner.as_eth(),
+					to: H160::default(),
+					value: burn_amount.into(),
+				}
+				.to_log(T::EvmTokenAddressMapping::token_to_address(
+					collection.id,
+					token,
+				)),
+			);
+			<PalletCommon<T>>::deposit_event(CommonEvent::ItemDestroyed(
+				collection.id,
+				token,
+				owner.clone(),
+				burn_amount,
+			));
+		}
+
 		Ok(())
 	}
 
+	fn token_owner(collection_id: CollectionId, token_id: TokenId) -> Option<T::CrossAccountId> {
+		let mut owner = None;
+		let mut count = 0;
+		for key in Balance::<T>::iter_key_prefix((collection_id, token_id)) {
+			count += 1;
+			if count > 1 {
+				return None;
+			}
+			owner = Some(key);
+		}
+		owner
+	}
+
 	fn total_pieces(collection_id: CollectionId, token_id: TokenId) -> Option<u128> {
 		<TotalSupply<T>>::try_get((collection_id, token_id)).ok()
 	}
+
+	pub fn set_collection_properties(
+		collection: &RefungibleHandle<T>,
+		sender: &T::CrossAccountId,
+		properties: Vec<Property>,
+	) -> DispatchResult {
+		<PalletCommon<T>>::set_collection_properties(collection, sender, properties)
+	}
+
+	pub fn delete_collection_properties(
+		collection: &RefungibleHandle<T>,
+		sender: &T::CrossAccountId,
+		property_keys: Vec<PropertyKey>,
+	) -> DispatchResult {
+		<PalletCommon<T>>::delete_collection_properties(collection, sender, property_keys)
+	}
+
+	pub fn set_token_property_permissions(
+		collection: &RefungibleHandle<T>,
+		sender: &T::CrossAccountId,
+		property_permissions: Vec<PropertyKeyPermission>,
+	) -> DispatchResult {
+		<PalletCommon<T>>::set_token_property_permissions(collection, sender, property_permissions)
+	}
+
+	/// Returns 10 token in no particular order.
+	///
+	/// There is no direct way to get token holders in ascending order,
+	/// since `iter_prefix` returns values in no particular order.
+	/// Therefore, getting the 10 largest holders with a large value of holders
+	/// can lead to impact memory allocation + sorting with  `n * log (n)`.
+	pub fn token_owners(
+		collection_id: CollectionId,
+		token: TokenId,
+	) -> Option<Vec<T::CrossAccountId>> {
+		let res: Vec<T::CrossAccountId> = <Balance<T>>::iter_prefix((collection_id, token))
+			.map(|(owner, _amount)| owner)
+			.take(10)
+			.collect();
+
+		if res.is_empty() {
+			None
+		} else {
+			Some(res)
+		}
+	}
 }
modifiedpallets/refungible/src/stubs/UniqueRefungibleToken.rawdiffbeforeafterboth

binary blob — no preview

addedpallets/refungible/src/stubs/UniqueRefungibleToken.soldiffbeforeafterboth
--- /dev/null
+++ b/pallets/refungible/src/stubs/UniqueRefungibleToken.sol
@@ -0,0 +1,138 @@
+// SPDX-License-Identifier: OTHER
+// This code is automatically generated
+
+pragma solidity >=0.8.0 <0.9.0;
+
+// Common stubs holder
+contract Dummy {
+	uint8 dummy;
+	string stub_error = "this contract is implemented in native";
+}
+
+contract ERC165 is Dummy {
+	function supportsInterface(bytes4 interfaceID)
+		external
+		view
+		returns (bool)
+	{
+		require(false, stub_error);
+		interfaceID;
+		return true;
+	}
+}
+
+// Inline
+contract ERC20Events {
+	event Transfer(address indexed from, address indexed to, uint256 value);
+	event Approval(
+		address indexed owner,
+		address indexed spender,
+		uint256 value
+	);
+}
+
+// Selector: 942e8b22
+contract ERC20 is Dummy, ERC165, ERC20Events {
+	// Selector: name() 06fdde03
+	function name() public view returns (string memory) {
+		require(false, stub_error);
+		dummy;
+		return "";
+	}
+
+	// Selector: symbol() 95d89b41
+	function symbol() public view returns (string memory) {
+		require(false, stub_error);
+		dummy;
+		return "";
+	}
+
+	// Selector: totalSupply() 18160ddd
+	function totalSupply() public view returns (uint256) {
+		require(false, stub_error);
+		dummy;
+		return 0;
+	}
+
+	// Selector: decimals() 313ce567
+	function decimals() public view returns (uint8) {
+		require(false, stub_error);
+		dummy;
+		return 0;
+	}
+
+	// Selector: balanceOf(address) 70a08231
+	function balanceOf(address owner) public view returns (uint256) {
+		require(false, stub_error);
+		owner;
+		dummy;
+		return 0;
+	}
+
+	// Selector: transfer(address,uint256) a9059cbb
+	function transfer(address to, uint256 amount) public returns (bool) {
+		require(false, stub_error);
+		to;
+		amount;
+		dummy = 0;
+		return false;
+	}
+
+	// Selector: transferFrom(address,address,uint256) 23b872dd
+	function transferFrom(
+		address from,
+		address to,
+		uint256 amount
+	) public returns (bool) {
+		require(false, stub_error);
+		from;
+		to;
+		amount;
+		dummy = 0;
+		return false;
+	}
+
+	// Selector: approve(address,uint256) 095ea7b3
+	function approve(address spender, uint256 amount) public returns (bool) {
+		require(false, stub_error);
+		spender;
+		amount;
+		dummy = 0;
+		return false;
+	}
+
+	// Selector: allowance(address,address) dd62ed3e
+	function allowance(address owner, address spender)
+		public
+		view
+		returns (uint256)
+	{
+		require(false, stub_error);
+		owner;
+		spender;
+		dummy;
+		return 0;
+	}
+}
+
+// Selector: ab8deb37
+contract ERC20UniqueExtensions is Dummy, ERC165 {
+	// Selector: burnFrom(address,uint256) 79cc6790
+	function burnFrom(address from, uint256 amount) public returns (bool) {
+		require(false, stub_error);
+		from;
+		amount;
+		dummy = 0;
+		return false;
+	}
+
+	// Selector: repartition(uint256) d2418ca7
+	function repartition(uint256 amount) public returns (bool) {
+		require(false, stub_error);
+		amount;
+		dummy = 0;
+		return false;
+	}
+}
+
+contract UniqueRefungibleToken is Dummy, ERC165, ERC20, ERC20UniqueExtensions {}
modifiedpallets/refungible/src/weights.rsdiffbeforeafterboth
--- a/pallets/refungible/src/weights.rs
+++ b/pallets/refungible/src/weights.rs
@@ -3,7 +3,7 @@
 //! Autogenerated weights for pallet_refungible
 //!
 //! THIS FILE WAS AUTO-GENERATED USING THE SUBSTRATE BENCHMARK CLI VERSION 4.0.0-dev
-//! DATE: 2022-06-27, STEPS: `50`, REPEAT: 80, LOW RANGE: `[]`, HIGH RANGE: `[]`
+//! DATE: 2022-07-20, STEPS: `50`, REPEAT: 80, LOW RANGE: `[]`, HIGH RANGE: `[]`
 //! EXECUTION: None, WASM-EXECUTION: Compiled, CHAIN: None, DB CACHE: 1024
 
 // Executed Command:
@@ -49,6 +49,9 @@
 	fn transfer_from_removing() -> Weight;
 	fn transfer_from_creating_removing() -> Weight;
 	fn burn_from() -> Weight;
+	fn set_token_property_permissions(b: u32, ) -> Weight;
+	fn set_token_properties(b: u32, ) -> Weight;
+	fn delete_token_properties(b: u32, ) -> Weight;
 	fn repartition_item() -> Weight;
 }
 
@@ -62,7 +65,7 @@
 	// Storage: Refungible TokenData (r:0 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
 	fn create_item() -> Weight {
-		(17_553_000 as Weight)
+		(21_310_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(2 as Weight))
 			.saturating_add(T::DbWeight::get().writes(6 as Weight))
 	}
@@ -73,9 +76,9 @@
 	// Storage: Refungible TokenData (r:0 w:4)
 	// Storage: Refungible Owned (r:0 w:4)
 	fn create_multiple_items(b: u32, ) -> Weight {
-		(10_654_000 as Weight)
-			// Standard Error: 1_000
-			.saturating_add((5_114_000 as Weight).saturating_mul(b as Weight))
+		(9_552_000 as Weight)
+			// Standard Error: 2_000
+			.saturating_add((7_056_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(T::DbWeight::get().reads(2 as Weight))
 			.saturating_add(T::DbWeight::get().writes(2 as Weight))
 			.saturating_add(T::DbWeight::get().writes((4 as Weight).saturating_mul(b as Weight)))
@@ -87,9 +90,9 @@
 	// Storage: Refungible TokenData (r:0 w:4)
 	// Storage: Refungible Owned (r:0 w:4)
 	fn create_multiple_items_ex_multiple_items(b: u32, ) -> Weight {
-		(3_587_000 as Weight)
+		(4_857_000 as Weight)
 			// Standard Error: 2_000
-			.saturating_add((7_931_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add((9_838_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(T::DbWeight::get().reads(1 as Weight))
 			.saturating_add(T::DbWeight::get().reads((1 as Weight).saturating_mul(b as Weight)))
 			.saturating_add(T::DbWeight::get().writes(1 as Weight))
@@ -102,9 +105,9 @@
 	// Storage: Refungible Balance (r:0 w:4)
 	// Storage: Refungible Owned (r:0 w:4)
 	fn create_multiple_items_ex_multiple_owners(b: u32, ) -> Weight {
-		(1_980_000 as Weight)
+		(11_335_000 as Weight)
 			// Standard Error: 2_000
-			.saturating_add((6_305_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add((6_784_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(T::DbWeight::get().reads(1 as Weight))
 			.saturating_add(T::DbWeight::get().reads((1 as Weight).saturating_mul(b as Weight)))
 			.saturating_add(T::DbWeight::get().writes(3 as Weight))
@@ -115,7 +118,7 @@
 	// Storage: Refungible AccountBalance (r:1 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
 	fn burn_item_partial() -> Weight {
-		(21_010_000 as Weight)
+		(21_239_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(3 as Weight))
 			.saturating_add(T::DbWeight::get().writes(4 as Weight))
 	}
@@ -125,14 +128,15 @@
 	// Storage: Refungible TokensBurnt (r:1 w:1)
 	// Storage: Refungible TokenData (r:0 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
+	// Storage: Refungible TokenProperties (r:0 w:1)
 	fn burn_item_fully() -> Weight {
-		(28_413_000 as Weight)
+		(29_426_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(4 as Weight))
-			.saturating_add(T::DbWeight::get().writes(6 as Weight))
+			.saturating_add(T::DbWeight::get().writes(7 as Weight))
 	}
 	// Storage: Refungible Balance (r:2 w:2)
 	fn transfer_normal() -> Weight {
-		(17_513_000 as Weight)
+		(17_743_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(2 as Weight))
 			.saturating_add(T::DbWeight::get().writes(2 as Weight))
 	}
@@ -140,7 +144,7 @@
 	// Storage: Refungible AccountBalance (r:1 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
 	fn transfer_creating() -> Weight {
-		(20_469_000 as Weight)
+		(20_699_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(3 as Weight))
 			.saturating_add(T::DbWeight::get().writes(4 as Weight))
 	}
@@ -148,7 +152,7 @@
 	// Storage: Refungible AccountBalance (r:1 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
 	fn transfer_removing() -> Weight {
-		(22_472_000 as Weight)
+		(22_833_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(3 as Weight))
 			.saturating_add(T::DbWeight::get().writes(4 as Weight))
 	}
@@ -156,21 +160,21 @@
 	// Storage: Refungible AccountBalance (r:2 w:2)
 	// Storage: Refungible Owned (r:0 w:2)
 	fn transfer_creating_removing() -> Weight {
-		(24_866_000 as Weight)
+		(24_936_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(4 as Weight))
 			.saturating_add(T::DbWeight::get().writes(6 as Weight))
 	}
 	// Storage: Refungible Balance (r:1 w:0)
 	// Storage: Refungible Allowance (r:0 w:1)
 	fn approve() -> Weight {
-		(13_475_000 as Weight)
+		(13_446_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(1 as Weight))
 			.saturating_add(T::DbWeight::get().writes(1 as Weight))
 	}
 	// Storage: Refungible Allowance (r:1 w:1)
 	// Storage: Refungible Balance (r:2 w:2)
 	fn transfer_from_normal() -> Weight {
-		(24_707_000 as Weight)
+		(24_777_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(3 as Weight))
 			.saturating_add(T::DbWeight::get().writes(3 as Weight))
 	}
@@ -179,7 +183,7 @@
 	// Storage: Refungible AccountBalance (r:1 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
 	fn transfer_from_creating() -> Weight {
-		(27_812_000 as Weight)
+		(28_483_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(4 as Weight))
 			.saturating_add(T::DbWeight::get().writes(5 as Weight))
 	}
@@ -188,7 +192,7 @@
 	// Storage: Refungible AccountBalance (r:1 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
 	fn transfer_from_removing() -> Weight {
-		(29_966_000 as Weight)
+		(29_896_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(4 as Weight))
 			.saturating_add(T::DbWeight::get().writes(5 as Weight))
 	}
@@ -197,7 +201,7 @@
 	// Storage: Refungible AccountBalance (r:2 w:2)
 	// Storage: Refungible Owned (r:0 w:2)
 	fn transfer_from_creating_removing() -> Weight {
-		(31_660_000 as Weight)
+		(32_070_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(5 as Weight))
 			.saturating_add(T::DbWeight::get().writes(7 as Weight))
 	}
@@ -208,15 +212,42 @@
 	// Storage: Refungible TokensBurnt (r:1 w:1)
 	// Storage: Refungible TokenData (r:0 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
+	// Storage: Refungible TokenProperties (r:0 w:1)
 	fn burn_from() -> Weight {
-		(36_248_000 as Weight)
+		(36_789_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(5 as Weight))
-			.saturating_add(T::DbWeight::get().writes(7 as Weight))
+			.saturating_add(T::DbWeight::get().writes(8 as Weight))
+	}
+	// Storage: Common CollectionPropertyPermissions (r:1 w:1)
+	fn set_token_property_permissions(b: u32, ) -> Weight {
+		(0 as Weight)
+			// Standard Error: 62_000
+			.saturating_add((15_803_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add(T::DbWeight::get().reads(1 as Weight))
+			.saturating_add(T::DbWeight::get().writes(1 as Weight))
+	}
+	// Storage: Common CollectionPropertyPermissions (r:1 w:0)
+	// Storage: Refungible TokenProperties (r:1 w:1)
+	fn set_token_properties(b: u32, ) -> Weight {
+		(0 as Weight)
+			// Standard Error: 1_668_000
+			.saturating_add((302_308_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add(T::DbWeight::get().reads(2 as Weight))
+			.saturating_add(T::DbWeight::get().writes(1 as Weight))
+	}
+	// Storage: Common CollectionPropertyPermissions (r:1 w:0)
+	// Storage: Refungible TokenProperties (r:1 w:1)
+	fn delete_token_properties(b: u32, ) -> Weight {
+		(0 as Weight)
+			// Standard Error: 1_619_000
+			.saturating_add((294_574_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add(T::DbWeight::get().reads(2 as Weight))
+			.saturating_add(T::DbWeight::get().writes(1 as Weight))
 	}
 	// Storage: Refungible TotalSupply (r:1 w:1)
 	// Storage: Refungible Balance (r:1 w:1)
 	fn repartition_item() -> Weight {
-		(8_226_000 as Weight)
+		(8_325_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(2 as Weight))
 			.saturating_add(T::DbWeight::get().writes(2 as Weight))
 	}
@@ -231,7 +262,7 @@
 	// Storage: Refungible TokenData (r:0 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
 	fn create_item() -> Weight {
-		(17_553_000 as Weight)
+		(21_310_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(2 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(6 as Weight))
 	}
@@ -242,9 +273,9 @@
 	// Storage: Refungible TokenData (r:0 w:4)
 	// Storage: Refungible Owned (r:0 w:4)
 	fn create_multiple_items(b: u32, ) -> Weight {
-		(10_654_000 as Weight)
-			// Standard Error: 1_000
-			.saturating_add((5_114_000 as Weight).saturating_mul(b as Weight))
+		(9_552_000 as Weight)
+			// Standard Error: 2_000
+			.saturating_add((7_056_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(RocksDbWeight::get().reads(2 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(2 as Weight))
 			.saturating_add(RocksDbWeight::get().writes((4 as Weight).saturating_mul(b as Weight)))
@@ -256,9 +287,9 @@
 	// Storage: Refungible TokenData (r:0 w:4)
 	// Storage: Refungible Owned (r:0 w:4)
 	fn create_multiple_items_ex_multiple_items(b: u32, ) -> Weight {
-		(3_587_000 as Weight)
+		(4_857_000 as Weight)
 			// Standard Error: 2_000
-			.saturating_add((7_931_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add((9_838_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(RocksDbWeight::get().reads(1 as Weight))
 			.saturating_add(RocksDbWeight::get().reads((1 as Weight).saturating_mul(b as Weight)))
 			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
@@ -271,9 +302,9 @@
 	// Storage: Refungible Balance (r:0 w:4)
 	// Storage: Refungible Owned (r:0 w:4)
 	fn create_multiple_items_ex_multiple_owners(b: u32, ) -> Weight {
-		(1_980_000 as Weight)
+		(11_335_000 as Weight)
 			// Standard Error: 2_000
-			.saturating_add((6_305_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add((6_784_000 as Weight).saturating_mul(b as Weight))
 			.saturating_add(RocksDbWeight::get().reads(1 as Weight))
 			.saturating_add(RocksDbWeight::get().reads((1 as Weight).saturating_mul(b as Weight)))
 			.saturating_add(RocksDbWeight::get().writes(3 as Weight))
@@ -284,7 +315,7 @@
 	// Storage: Refungible AccountBalance (r:1 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
 	fn burn_item_partial() -> Weight {
-		(21_010_000 as Weight)
+		(21_239_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(3 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(4 as Weight))
 	}
@@ -294,14 +325,15 @@
 	// Storage: Refungible TokensBurnt (r:1 w:1)
 	// Storage: Refungible TokenData (r:0 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
+	// Storage: Refungible TokenProperties (r:0 w:1)
 	fn burn_item_fully() -> Weight {
-		(28_413_000 as Weight)
+		(29_426_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(4 as Weight))
-			.saturating_add(RocksDbWeight::get().writes(6 as Weight))
+			.saturating_add(RocksDbWeight::get().writes(7 as Weight))
 	}
 	// Storage: Refungible Balance (r:2 w:2)
 	fn transfer_normal() -> Weight {
-		(17_513_000 as Weight)
+		(17_743_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(2 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(2 as Weight))
 	}
@@ -309,7 +341,7 @@
 	// Storage: Refungible AccountBalance (r:1 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
 	fn transfer_creating() -> Weight {
-		(20_469_000 as Weight)
+		(20_699_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(3 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(4 as Weight))
 	}
@@ -317,7 +349,7 @@
 	// Storage: Refungible AccountBalance (r:1 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
 	fn transfer_removing() -> Weight {
-		(22_472_000 as Weight)
+		(22_833_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(3 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(4 as Weight))
 	}
@@ -325,21 +357,21 @@
 	// Storage: Refungible AccountBalance (r:2 w:2)
 	// Storage: Refungible Owned (r:0 w:2)
 	fn transfer_creating_removing() -> Weight {
-		(24_866_000 as Weight)
+		(24_936_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(4 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(6 as Weight))
 	}
 	// Storage: Refungible Balance (r:1 w:0)
 	// Storage: Refungible Allowance (r:0 w:1)
 	fn approve() -> Weight {
-		(13_475_000 as Weight)
+		(13_446_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(1 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
 	}
 	// Storage: Refungible Allowance (r:1 w:1)
 	// Storage: Refungible Balance (r:2 w:2)
 	fn transfer_from_normal() -> Weight {
-		(24_707_000 as Weight)
+		(24_777_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(3 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(3 as Weight))
 	}
@@ -348,7 +380,7 @@
 	// Storage: Refungible AccountBalance (r:1 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
 	fn transfer_from_creating() -> Weight {
-		(27_812_000 as Weight)
+		(28_483_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(4 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(5 as Weight))
 	}
@@ -357,7 +389,7 @@
 	// Storage: Refungible AccountBalance (r:1 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
 	fn transfer_from_removing() -> Weight {
-		(29_966_000 as Weight)
+		(29_896_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(4 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(5 as Weight))
 	}
@@ -366,7 +398,7 @@
 	// Storage: Refungible AccountBalance (r:2 w:2)
 	// Storage: Refungible Owned (r:0 w:2)
 	fn transfer_from_creating_removing() -> Weight {
-		(31_660_000 as Weight)
+		(32_070_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(5 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(7 as Weight))
 	}
@@ -377,15 +409,42 @@
 	// Storage: Refungible TokensBurnt (r:1 w:1)
 	// Storage: Refungible TokenData (r:0 w:1)
 	// Storage: Refungible Owned (r:0 w:1)
+	// Storage: Refungible TokenProperties (r:0 w:1)
 	fn burn_from() -> Weight {
-		(36_248_000 as Weight)
+		(36_789_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(5 as Weight))
-			.saturating_add(RocksDbWeight::get().writes(7 as Weight))
+			.saturating_add(RocksDbWeight::get().writes(8 as Weight))
+	}
+	// Storage: Common CollectionPropertyPermissions (r:1 w:1)
+	fn set_token_property_permissions(b: u32, ) -> Weight {
+		(0 as Weight)
+			// Standard Error: 62_000
+			.saturating_add((15_803_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add(RocksDbWeight::get().reads(1 as Weight))
+			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
+	}
+	// Storage: Common CollectionPropertyPermissions (r:1 w:0)
+	// Storage: Refungible TokenProperties (r:1 w:1)
+	fn set_token_properties(b: u32, ) -> Weight {
+		(0 as Weight)
+			// Standard Error: 1_668_000
+			.saturating_add((302_308_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add(RocksDbWeight::get().reads(2 as Weight))
+			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
 	}
+	// Storage: Common CollectionPropertyPermissions (r:1 w:0)
+	// Storage: Refungible TokenProperties (r:1 w:1)
+	fn delete_token_properties(b: u32, ) -> Weight {
+		(0 as Weight)
+			// Standard Error: 1_619_000
+			.saturating_add((294_574_000 as Weight).saturating_mul(b as Weight))
+			.saturating_add(RocksDbWeight::get().reads(2 as Weight))
+			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
+	}
 	// Storage: Refungible TotalSupply (r:1 w:1)
 	// Storage: Refungible Balance (r:1 w:1)
 	fn repartition_item() -> Weight {
-		(8_226_000 as Weight)
+		(8_325_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(2 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(2 as Weight))
 	}
modifiedpallets/scheduler/src/lib.rsdiffbeforeafterboth
--- a/pallets/scheduler/src/lib.rs
+++ b/pallets/scheduler/src/lib.rs
@@ -24,7 +24,7 @@
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
-// 	http://www.apache.org/licenses/LICENSE-2.0
+// 	<http://www.apache.org/licenses/LICENSE-2.0>
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ -32,27 +32,36 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//! # Schedulerdo_reschedule
+//! # Unique scheduler
+//! A Pallet for scheduling dispatches.
+//!
+//! - [`Config`]
+//! - [`Call`]
+//! - [`Pallet`]
+//!
+//! ## Overview
 //!
 //! This Pallet exposes capabilities for scheduling dispatches to occur at a
 //! specified block number or at a specified period. These scheduled dispatches
-//! may be named or anonymous and may be canceled.
+//! should be named and may be canceled.
 //!
-//! **NOTE:** The scheduled calls will be dispatched with the default filter
-//! for the origin: namely `frame_system::Config::BaseCallFilter` for all origin
-//! except root which will get no filter. And not the filter contained in origin
-//! use to call `fn schedule`.
+//! **NOTE:** The unique scheduler is designed for deferred transaction calls by block number.
+//! Any user can book a call of a certain transaction to a specific block number.
+//! Also possible to book a call with a certain frequency.
 //!
-//! If a call is scheduled using proxy or whatever mecanism which adds filter,
-//! then those filter will not be used when dispatching the schedule call.
+//! Key differences from the original pallet:
+//! <https://crates.io/crates/pallet-scheduler>
+//! Schedule Id restricted by 16 bytes. Identificator for booked call.
+//! Priority limited by HARD DEADLINE (<= 63). Calls over maximum weight don't include to block.
+//! The maximum weight that may be scheduled per block for any dispatchables of less priority than `schedule::HARD_DEADLINE`.
+//! Maybe_periodic limit is 100 calls. Reserved for future sponsored transaction support.
+//! At 100 calls reserved amount is not so much and this is avoid potential problems with balance locks.
+//! Any account allowed to schedule any calls. Account withdraw implemented through default transaction logic.
 //!
 //! ## Interface
 //!
 //! ### Dispatchable Functions
 //!
-//! * `schedule` - schedule a dispatch, which may be periodic, to occur at a specified block and
-//!   with a specified priority.
-//! * `cancel` - cancel a scheduled dispatch, specified by block number and index.
 //! * `schedule_named` - augments the `schedule` interface with an additional `Vec<u8>` parameter
 //!   that can be used for identification.
 //! * `cancel_named` - the named complement to the cancel function.
@@ -258,7 +267,7 @@
 
 	/// A Scheduler-Runtime interface for finer payment handling.
 	pub trait DispatchCall<T: frame_system::Config + Config, SelfContainedSignedInfo> {
-		/// Reserve the maximum spendings on a call.
+		/// Reserve (lock) the maximum spendings on a call, calculated from its weight and the repetition count.
 		fn reserve_balance(
 			id: ScheduledId,
 			sponsor: <T as frame_system::Config>::AccountId,
@@ -266,7 +275,7 @@
 			count: u32,
 		) -> Result<(), DispatchError>;
 
-		/// Pay for call dispatch (un-reserve) from the reserved funds, returning the change.
+		/// Unreserve (unlock) a certain amount from the payer's reserved funds, returning the change.
 		fn pay_for_call(
 			id: ScheduledId,
 			sponsor: <T as frame_system::Config>::AccountId,
@@ -282,7 +291,7 @@
 			TransactionValidityError,
 		>;
 
-		/// Release reserved funds.
+		/// Release unspent reserved funds in case of a schedule cancel.
 		fn cancel_reserve(
 			id: ScheduledId,
 			sponsor: <T as frame_system::Config>::AccountId,
@@ -441,6 +450,8 @@
 				// 	);
 				// }
 
+				// Execute transaction via chain default pipeline
+				// That means dispatch will be processed like any user's extrinsic e.g. transaction fees will be taken
 				let r = T::CallExecutor::dispatch_call(sender, call.clone());
 
 				let mut actual_call_weight: Weight = item_weight;
@@ -485,8 +496,8 @@
 					Agenda::<T>::append(wake, Some(s));
 				}
 			}
+			// Total weight should be 0, because the transaction is already paid for
 			0
-			//total_weight
 		}
 	}
modifiedpallets/structure/src/benchmarking.rsdiffbeforeafterboth
--- a/pallets/structure/src/benchmarking.rs
+++ b/pallets/structure/src/benchmarking.rs
@@ -1,3 +1,19 @@
+// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.
+// This file is part of Unique Network.
+
+// Unique Network is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Unique Network is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
+
 use super::*;
 
 use frame_benchmarking::{benchmarks, account};
modifiedpallets/structure/src/lib.rsdiffbeforeafterboth
--- a/pallets/structure/src/lib.rs
+++ b/pallets/structure/src/lib.rs
@@ -1,3 +1,56 @@
+// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.
+// This file is part of Unique Network.
+
+// Unique Network is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Unique Network is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
+
+//! # Structure Pallet
+//!
+//! The Structure pallet provides functionality for handling tokens nesting an unnesting.
+//!
+//! - [`Config`]
+//! - [`Pallet`]
+//!
+//! ## Overview
+//!
+//! The Structure pallet provides functions for:
+//!
+//! - Searching for token parents, children and owners. Actual implementation of searching for
+//!   parent/child is done by pallets corresponding to token's collection type.
+//! - Nesting and unnesting tokens. Actual implementation of nesting is done by pallets corresponding
+//!   to token's collection type.
+//!
+//! ### Terminology
+//!
+//! - **Nesting:** Setting up parent-child relationship between tokens. Nested tokens are inhereting
+//!   owner from their parent. There could be multiple levels of nesting. Token couldn't be nested in
+//!   it's child token i.e. parent-child relationship graph shouldn't have
+//!
+//! - **Parent:** Token that current token is nested in.
+//!
+//! - **Owner:** Account that owns the token and all nested tokens.
+//!
+//! ## Interface
+//!
+//! ### Available Functions
+//!
+//! - `find_parent` - Find parent of the token. It could be an account or another token.
+//! - `parent_chain` - Find chain of parents of the token.
+//! - `find_topmost_owner` - Find account or token in the end of the chain of parents.
+//! - `check_nesting` - Check if the token could be nested in the other token
+//! - `nest_if_sent_to_token` - Nest the token in the other token
+//! - `unnest_if_nested` - Unnest the token from the other token
+
 #![cfg_attr(not(feature = "std"), no_std)]
 
 use pallet_common::CommonCollectionOperations;
@@ -82,6 +135,12 @@
 }
 
 impl<T: Config> Pallet<T> {
+	/// Find account owning the `token` or a token that the `token` is nested in.
+	///
+	/// Returns the enum that have three variants:
+	/// - [`User`](crate::Parent<T>::User): Contains account.
+	/// - [`Token`](crate::Parent<T>::Token): Contains token id and collection id.
+	/// - [`TokenNotFound`](crate::Parent<T>::TokenNotFound): Indicates that parent was not found
 	pub fn find_parent(
 		collection: CollectionId,
 		token: TokenId,
@@ -103,6 +162,11 @@
 		})
 	}
 
+	/// Get the chain of parents of a token in the nesting hierarchy
+	///
+	/// Returns an iterator of addresses of the owning tokens and the owning account,
+	/// starting from the immediate parent token, ending with the account.
+	/// Returns error if cycle is detected.
 	pub fn parent_chain(
 		mut collection: CollectionId,
 		mut token: TokenId,
@@ -133,6 +197,8 @@
 	/// Try to dereference address, until finding top level owner
 	///
 	/// May return token address if parent token not yet exists
+	///
+	/// - `budget`: Limit for searching parents in depth.
 	pub fn find_topmost_owner(
 		collection: CollectionId,
 		token: TokenId,
@@ -149,6 +215,10 @@
 		})
 	}
 
+	/// Find the topmost parent and check that assigning `for_nest` token as a child for
+	/// `token` wouldn't create a cycle.
+	///
+	/// - `budget`: Limit for searching parents in depth.
 	pub fn get_checked_topmost_owner(
 		collection: CollectionId,
 		token: TokenId,
@@ -177,6 +247,10 @@
 		Err(<Error<T>>::DepthLimit.into())
 	}
 
+	/// Burn token and all of it's nested tokens
+	///
+	/// - `self_budget`: Limit for searching children in depth.
+	/// - `breadth_budget`: Limit of breadth of searching children.
 	pub fn burn_item_recursively(
 		from: T::CrossAccountId,
 		collection: CollectionId,
@@ -190,7 +264,13 @@
 		dispatch.burn_item_recursively(from.clone(), token, self_budget, breadth_budget)
 	}
 
-	/// Check if token indirectly owned by specified user
+	/// Check if `token` indirectly owned by `user`
+	///
+	/// Returns `true` if `user` is `token`'s owner. Or If token is provided as `user` then
+	/// check that `user` and `token` have same owner.
+	/// Checks that assigning `for_nest` token as a child for `token` wouldn't create a cycle.
+	///
+	/// - `budget`: Limit for searching parents in depth.
 	pub fn check_indirectly_owned(
 		user: T::CrossAccountId,
 		collection: CollectionId,
@@ -207,6 +287,12 @@
 			.map(|indirect_owner| indirect_owner == target_parent)
 	}
 
+	/// Checks that `under` is valid token and that `token_id` could be nested under it
+	/// and that `from` is `under`'s owner
+	///
+	/// Returns OK if `under` is not a token
+	///
+	/// - `nesting_budget`: Limit for searching parents in depth.
 	pub fn check_nesting(
 		from: T::CrossAccountId,
 		under: &T::CrossAccountId,
@@ -219,6 +305,11 @@
 		})
 	}
 
+	/// Nests `token_id` under `under` token
+	///
+	/// Returns OK if `under` is not a token. Checks that nesting is possible.
+	///
+	/// - `nesting_budget`: Limit for searching parents in depth.
 	pub fn nest_if_sent_to_token(
 		from: T::CrossAccountId,
 		under: &T::CrossAccountId,
@@ -235,6 +326,9 @@
 		})
 	}
 
+	/// Nests `token_id` under `owner` token
+	///
+	/// Caller should check that nesting wouldn't cause recursion in nesting
 	pub fn nest_if_sent_to_token_unchecked(
 		owner: &T::CrossAccountId,
 		collection_id: CollectionId,
@@ -245,6 +339,7 @@
 		});
 	}
 
+	/// Unnests `token_id` from `owner`.
 	pub fn unnest_if_nested(
 		owner: &T::CrossAccountId,
 		collection_id: CollectionId,
modifiedpallets/unique/src/eth/stubs/CollectionHelpers.rawdiffbeforeafterboth

binary blob — no preview

modifiedprimitives/data-structs/Cargo.tomldiffbeforeafterboth
--- a/primitives/data-structs/Cargo.toml
+++ b/primitives/data-structs/Cargo.toml
@@ -6,7 +6,7 @@
 license = 'GPLv3'
 homepage = "https://unique.network"
 repository = 'https://github.com/UniqueNetwork/unique-chain'
-version = '0.1.0'
+version = '0.1.1'
 
 [dependencies]
 scale-info = { version = "2.0.1", default-features = false, features = [
addedprimitives/data-structs/Changelog.mddiffbeforeafterboth
--- /dev/null
+++ b/primitives/data-structs/Changelog.md
@@ -0,0 +1,3 @@
+### 0.1.1
+---
+* Added fields with properties to `CreateReFungibleData` and `CreateRefungibleExData`.
\ No newline at end of file
modifiedprimitives/data-structs/src/lib.rsdiffbeforeafterboth
--- a/primitives/data-structs/src/lib.rs
+++ b/primitives/data-structs/src/lib.rs
@@ -563,8 +563,14 @@
 	#[cfg_attr(feature = "serde1", serde(with = "bounded::vec_serde"))]
 	#[derivative(Debug(format_with = "bounded::vec_debug"))]
 	pub const_data: BoundedVec<u8, CustomDataLimit>,
+
 	/// Number of pieces the RFT is split into
 	pub pieces: u128,
+
+	/// Key-value pairs used to describe the token as metadata
+	#[cfg_attr(feature = "serde1", serde(with = "bounded::vec_serde"))]
+	#[derivative(Debug(format_with = "bounded::vec_debug"))]
+	pub properties: CollectionPropertiesVec,
 }
 
 #[derive(Encode, Decode, Debug, Clone, PartialEq, TypeInfo, MaxEncodedLen)]
@@ -601,6 +607,8 @@
 	pub const_data: BoundedVec<u8, CustomDataLimit>,
 	#[derivative(Debug(format_with = "bounded::map_debug"))]
 	pub users: BoundedBTreeMap<CrossAccountId, u128, ConstU32<MAX_ITEMS_PER_BATCH>>,
+	#[derivative(Debug(format_with = "bounded::vec_debug"))]
+	pub properties: CollectionPropertiesVec,
 }
 
 /// Explicit item creation data with meta parameters, namely the owner.
addedprimitives/rpc/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/primitives/rpc/CHANGELOG.md
@@ -0,0 +1,10 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.1.1] - 2022-07-14
+
+### Added
+
+ - Implementation of RPC method `token_owners` returning 10 owners in no particular order.
+   This was an internal request to improve the web interface and support fractionalization event. 
\ No newline at end of file
modifiedprimitives/rpc/Cargo.tomldiffbeforeafterboth
--- a/primitives/rpc/Cargo.toml
+++ b/primitives/rpc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "up-rpc"
-version = "0.1.0"
+version = "0.1.1"
 license = "GPLv3"
 edition = "2021"
modifiedprimitives/rpc/src/lib.rsdiffbeforeafterboth
--- a/primitives/rpc/src/lib.rs
+++ b/primitives/rpc/src/lib.rs
@@ -81,5 +81,6 @@
 		fn next_sponsored(collection: CollectionId, account: CrossAccountId, token: TokenId) -> Result<Option<u64>>;
 		fn effective_collection_limits(collection_id: CollectionId) -> Result<Option<CollectionLimits>>;
 		fn total_pieces(collection_id: CollectionId, token_id: TokenId) -> Result<Option<u128>>;
+		fn token_owners(collection: CollectionId, token: TokenId) -> Result<Vec<CrossAccountId>>;
 	}
 }
addedruntime/common/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/runtime/common/CHANGELOG.md
@@ -0,0 +1,13 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## [0.9.25] - 2022-07-14
+
+### Added
+
+ - Implementation of RPC method `token_owners` returning 10 owners in no particular order.
+    This was an internal request to improve the web interface and support fractionalization event. 
+
+
+ 
\ No newline at end of file
modifiedruntime/common/src/dispatch.rsdiffbeforeafterboth
--- a/runtime/common/src/dispatch.rs
+++ b/runtime/common/src/dispatch.rs
@@ -25,7 +25,9 @@
 pub use pallet_common::dispatch::CollectionDispatch;
 use pallet_fungible::{Pallet as PalletFungible, FungibleHandle};
 use pallet_nonfungible::{Pallet as PalletNonfungible, NonfungibleHandle};
-use pallet_refungible::{Pallet as PalletRefungible, RefungibleHandle, erc::RefungibleTokenHandle};
+use pallet_refungible::{
+	Pallet as PalletRefungible, RefungibleHandle, erc_token::RefungibleTokenHandle,
+};
 use up_data_structs::{
 	CollectionMode, CreateCollectionData, MAX_DECIMAL_POINTS, mapping::TokenAddressMapping,
 };
modifiedruntime/common/src/runtime_apis.rsdiffbeforeafterboth
--- a/runtime/common/src/runtime_apis.rs
+++ b/runtime/common/src/runtime_apis.rs
@@ -40,6 +40,11 @@
                 fn token_owner(collection: CollectionId, token: TokenId) -> Result<Option<CrossAccountId>, DispatchError> {
                     dispatch_unique_runtime!(collection.token_owner(token))
                 }
+
+                fn token_owners(collection: CollectionId, token: TokenId) -> Result<Vec::<CrossAccountId>, DispatchError>  {
+                   dispatch_unique_runtime!(collection.token_owners(token))
+                }
+
                 fn topmost_token_owner(collection: CollectionId, token: TokenId) -> Result<Option<CrossAccountId>, DispatchError> {
                     let budget = up_data_structs::budget::Value::new(10);
modifiedruntime/tests/src/tests.rsdiffbeforeafterboth
--- a/runtime/tests/src/tests.rs
+++ b/runtime/tests/src/tests.rs
@@ -64,6 +64,12 @@
 	CreateReFungibleData {
 		const_data: vec![1, 2, 3].try_into().unwrap(),
 		pieces: 1023,
+		properties: vec![Property {
+			key: b"test-prop".to_vec().try_into().unwrap(),
+			value: b"test-nft-prop".to_vec().try_into().unwrap(),
+		}]
+		.try_into()
+		.unwrap(),
 	}
 }
addedtests/CHANGELOG.mddiffbeforeafterboth
--- /dev/null
+++ b/tests/CHANGELOG.md
@@ -0,0 +1,11 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+
+## 2022-07-14
+
+### Added
+ - Integrintegration tests of RPC method `token_owners`.
+ - Integrintegration tests of Fungible Pallet.
+  
+ 
\ No newline at end of file
modifiedtests/package.jsondiffbeforeafterboth
--- a/tests/package.json
+++ b/tests/package.json
@@ -80,6 +80,8 @@
     "testLimits": "mocha --timeout 9999999 -r ts-node/register ./**/limits.test.ts",
     "testEthCreateCollection": "mocha --timeout 9999999 -r ts-node/register ./**/eth/createCollection.test.ts",
     "testRFT": "mocha --timeout 9999999 -r ts-node/register ./**/refungible.test.ts",
+    "testFT": "mocha --timeout 9999999 -r ts-node/register ./**/fungible.test.ts",
+    "testRPC": "mocha --timeout 9999999 -r ts-node/register ./**/rpc.test.ts",
     "polkadot-types-fetch-metadata": "curl -H 'Content-Type: application/json' -d '{\"id\":\"1\", \"jsonrpc\":\"2.0\", \"method\": \"state_getMetadata\", \"params\":[]}' http://localhost:9933 > src/interfaces/metadata.json",
     "polkadot-types-from-defs": "ts-node ./node_modules/.bin/polkadot-types-from-defs --endpoint src/interfaces/metadata.json --input src/interfaces/ --package .",
     "polkadot-types-from-chain": "ts-node ./node_modules/.bin/polkadot-types-from-chain --endpoint src/interfaces/metadata.json --output src/interfaces/ --package .",
modifiedtests/src/createMultipleItems.test.tsdiffbeforeafterboth
--- a/tests/src/createMultipleItems.test.ts
+++ b/tests/src/createMultipleItems.test.ts
@@ -376,14 +376,26 @@
       // ReFungible
       const collectionIdReFungible =
         await createCollectionExpectSuccess({mode: {type: 'ReFungible'}});
-      const argsReFungible = [
-        {ReFungible: ['1'.repeat(2049), 10]},
-        {ReFungible: ['2'.repeat(2049), 10]},
-        {ReFungible: ['3'.repeat(2049), 10]},
-      ];
-      const createMultipleItemsTxFungible = api.tx.unique
-        .createMultipleItems(collectionIdReFungible, normalizeAccountId(alice.address), argsReFungible);
-      await expect(submitTransactionExpectFailAsync(alice, createMultipleItemsTxFungible)).to.be.rejected;
+      {
+        const argsReFungible = [
+          {ReFungible: ['1'.repeat(2049), 10, []]},
+          {ReFungible: ['2'.repeat(2049), 10, []]},
+          {ReFungible: ['3'.repeat(2049), 10, []]},
+        ];
+        const createMultipleItemsTxFungible = api.tx.unique
+          .createMultipleItems(collectionIdReFungible, normalizeAccountId(alice.address), argsReFungible);
+        await expect(submitTransactionExpectFailAsync(alice, createMultipleItemsTxFungible)).to.be.rejected;
+      }
+      {
+        const argsReFungible = [
+          {ReFungible: {properties: [{key: 'key', value: 'A'.repeat(32769)}]}},
+          {ReFungible: {properties: [{key: 'key', value: 'B'.repeat(32769)}]}},
+          {ReFungible: {properties: [{key: 'key', value: 'C'.repeat(32769)}]}},
+        ];
+        const createMultipleItemsTxFungible = api.tx.unique
+          .createMultipleItems(collectionIdReFungible, normalizeAccountId(alice.address), argsReFungible);
+        await expect(submitTransactionExpectFailAsync(alice, createMultipleItemsTxFungible)).to.be.rejected;
+      }
     });
   });
modifiedtests/src/eth/api/UniqueFungible.soldiffbeforeafterboth
--- a/tests/src/eth/api/UniqueFungible.sol
+++ b/tests/src/eth/api/UniqueFungible.sol
@@ -28,6 +28,154 @@
 	function burnFrom(address from, uint256 amount) external returns (bool);
 }
 
+// Selector: 7d9262e6
+interface Collection is Dummy, ERC165 {
+	// Set collection property.
+	//
+	// @param key Property key.
+	// @param value Propery value.
+	//
+	// Selector: setCollectionProperty(string,bytes) 2f073f66
+	function setCollectionProperty(string memory key, bytes memory value)
+		external;
+
+	// Delete collection property.
+	//
+	// @param key Property key.
+	//
+	// Selector: deleteCollectionProperty(string) 7b7debce
+	function deleteCollectionProperty(string memory key) external;
+
+	// Get collection property.
+	//
+	// @dev Throws error if key not found.
+	//
+	// @param key Property key.
+	// @return bytes The property corresponding to the key.
+	//
+	// Selector: collectionProperty(string) cf24fd6d
+	function collectionProperty(string memory key)
+		external
+		view
+		returns (bytes memory);
+
+	// Set the sponsor of the collection.
+	//
+	// @dev In order for sponsorship to work, it must be confirmed on behalf of the sponsor.
+	//
+	// @param sponsor Address of the sponsor from whose account funds will be debited for operations with the contract.
+	//
+	// Selector: setCollectionSponsor(address) 7623402e
+	function setCollectionSponsor(address sponsor) external;
+
+	// Collection sponsorship confirmation.
+	//
+	// @dev After setting the sponsor for the collection, it must be confirmed with this function.
+	//
+	// Selector: confirmCollectionSponsorship() 3c50e97a
+	function confirmCollectionSponsorship() external;
+
+	// Set limits for the collection.
+	// @dev Throws error if limit not found.
+	// @param limit Name of the limit. Valid names:
+	// 	"accountTokenOwnershipLimit",
+	// 	"sponsoredDataSize",
+	// 	"sponsoredDataRateLimit",
+	// 	"tokenLimit",
+	// 	"sponsorTransferTimeout",
+	// 	"sponsorApproveTimeout"
+	// @param value Value of the limit.
+	//
+	// Selector: setCollectionLimit(string,uint32) 6a3841db
+	function setCollectionLimit(string memory limit, uint32 value) external;
+
+	// Set limits for the collection.
+	// @dev Throws error if limit not found.
+	// @param limit Name of the limit. Valid names:
+	// 	"ownerCanTransfer",
+	// 	"ownerCanDestroy",
+	// 	"transfersEnabled"
+	// @param value Value of the limit.
+	//
+	// Selector: setCollectionLimit(string,bool) 993b7fba
+	function setCollectionLimit(string memory limit, bool value) external;
+
+	// Get contract address.
+	//
+	// Selector: contractAddress() f6b4dfb4
+	function contractAddress() external view returns (address);
+
+	// Add collection admin by substrate address.
+	// @param new_admin Substrate administrator address.
+	//
+	// Selector: addCollectionAdminSubstrate(uint256) 5730062b
+	function addCollectionAdminSubstrate(uint256 newAdmin) external;
+
+	// Remove collection admin by substrate address.
+	// @param admin Substrate administrator address.
+	//
+	// Selector: removeCollectionAdminSubstrate(uint256) 4048fcf9
+	function removeCollectionAdminSubstrate(uint256 admin) external;
+
+	// Add collection admin.
+	// @param new_admin Address of the added administrator.
+	//
+	// Selector: addCollectionAdmin(address) 92e462c7
+	function addCollectionAdmin(address newAdmin) external;
+
+	// Remove collection admin.
+	//
+	// @param new_admin Address of the removed administrator.
+	//
+	// Selector: removeCollectionAdmin(address) fafd7b42
+	function removeCollectionAdmin(address admin) external;
+
+	// Toggle accessibility of collection nesting.
+	//
+	// @param enable If "true" degenerates to nesting: 'Owner' else to nesting: 'Disabled'
+	//
+	// Selector: setCollectionNesting(bool) 112d4586
+	function setCollectionNesting(bool enable) external;
+
+	// Toggle accessibility of collection nesting.
+	//
+	// @param enable If "true" degenerates to nesting: {OwnerRestricted: [1, 2, 3]} else to nesting: 'Disabled'
+	// @param collections Addresses of collections that will be available for nesting.
+	//
+	// Selector: setCollectionNesting(bool,address[]) 64872396
+	function setCollectionNesting(bool enable, address[] memory collections)
+		external;
+
+	// Set the collection access method.
+	// @param mode Access mode
+	// 	0 for Normal
+	// 	1 for AllowList
+	//
+	// Selector: setCollectionAccess(uint8) 41835d4c
+	function setCollectionAccess(uint8 mode) external;
+
+	// Add the user to the allowed list.
+	//
+	// @param user Address of a trusted user.
+	//
+	// Selector: addToCollectionAllowList(address) 67844fe6
+	function addToCollectionAllowList(address user) external;
+
+	// Remove the user from the allowed list.
+	//
+	// @param user Address of a removed user.
+	//
+	// Selector: removeFromCollectionAllowList(address) 85c51acb
+	function removeFromCollectionAllowList(address user) external;
+
+	// Switch permission for minting.
+	//
+	// @param mode Enable if "true".
+	//
+	// Selector: setCollectionMintMode(bool) 00018e84
+	function setCollectionMintMode(bool mode) external;
+}
+
 // Selector: 942e8b22
 interface ERC20 is Dummy, ERC165, ERC20Events {
 	// Selector: name() 06fdde03
@@ -63,39 +211,6 @@
 		external
 		view
 		returns (uint256);
-}
-
-// Selector: c894dc35
-interface Collection is Dummy, ERC165 {
-	// Selector: setCollectionProperty(string,bytes) 2f073f66
-	function setCollectionProperty(string memory key, bytes memory value)
-		external;
-
-	// Selector: deleteCollectionProperty(string) 7b7debce
-	function deleteCollectionProperty(string memory key) external;
-
-	// Throws error if key not found
-	//
-	// Selector: collectionProperty(string) cf24fd6d
-	function collectionProperty(string memory key)
-		external
-		view
-		returns (bytes memory);
-
-	// Selector: ethSetSponsor(address) 8f9af356
-	function ethSetSponsor(address sponsor) external;
-
-	// Selector: ethConfirmSponsorship() a8580d1a
-	function ethConfirmSponsorship() external;
-
-	// Selector: setLimit(string,uint32) 68db30ca
-	function setLimit(string memory limit, uint32 value) external;
-
-	// Selector: setLimit(string,bool) ea67e4c2
-	function setLimit(string memory limit, bool value) external;
-
-	// Selector: contractAddress() f6b4dfb4
-	function contractAddress() external view returns (address);
 }
 
 interface UniqueFungible is
modifiedtests/src/eth/api/UniqueNFT.soldiffbeforeafterboth
--- a/tests/src/eth/api/UniqueNFT.sol
+++ b/tests/src/eth/api/UniqueNFT.sol
@@ -44,6 +44,13 @@
 
 // Selector: 41369377
 interface TokenProperties is Dummy, ERC165 {
+	// @notice Set permissions for token property.
+	// @dev Throws error if `msg.sender` is not admin or owner of the collection.
+	// @param key Property key.
+	// @param is_mutable Permission to mutate property.
+	// @param collection_admin Permission to mutate property by collection admin if property is mutable.
+	// @param token_owner Permission to mutate property by token owner if property is mutable.
+	//
 	// Selector: setTokenPropertyPermission(string,bool,bool,bool) 222d97fa
 	function setTokenPropertyPermission(
 		string memory key,
@@ -52,6 +59,12 @@
 		bool tokenOwner
 	) external;
 
+	// @notice Set token property value.
+	// @dev Throws error if `msg.sender` has no permission to edit the property.
+	// @param tokenId ID of the token.
+	// @param key Property key.
+	// @param value Property value.
+	//
 	// Selector: setProperty(uint256,string,bytes) 1752d67b
 	function setProperty(
 		uint256 tokenId,
@@ -59,10 +72,19 @@
 		bytes memory value
 	) external;
 
+	// @notice Delete token property value.
+	// @dev Throws error if `msg.sender` has no permission to edit the property.
+	// @param tokenId ID of the token.
+	// @param key Property key.
+	//
 	// Selector: deleteProperty(uint256,string) 066111d1
 	function deleteProperty(uint256 tokenId, string memory key) external;
 
-	// Throws error if key not found
+	// @notice Get token property value.
+	// @dev Throws error if key not found
+	// @param tokenId ID of the token.
+	// @param key Property key.
+	// @return Property value bytes
 	//
 	// Selector: property(uint256,string) 7228c327
 	function property(uint256 tokenId, string memory key)
@@ -73,19 +95,36 @@
 
 // Selector: 42966c68
 interface ERC721Burnable is Dummy, ERC165 {
+	// @notice Burns a specific ERC721 token.
+	// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized
+	//  operator of the current owner.
+	// @param tokenId The NFT to approve
+	//
 	// Selector: burn(uint256) 42966c68
 	function burn(uint256 tokenId) external;
 }
 
 // Selector: 58800161
 interface ERC721 is Dummy, ERC165, ERC721Events {
+	// @notice Count all NFTs assigned to an owner
+	// @dev NFTs assigned to the zero address are considered invalid, and this
+	//  function throws for queries about the zero address.
+	// @param owner An address for whom to query the balance
+	// @return The number of NFTs owned by `owner`, possibly zero
+	//
 	// Selector: balanceOf(address) 70a08231
 	function balanceOf(address owner) external view returns (uint256);
 
+	// @notice Find the owner of an NFT
+	// @dev NFTs assigned to zero address are considered invalid, and queries
+	//  about them do throw.
+	// @param tokenId The identifier for an NFT
+	// @return The address of the owner of the NFT
+	//
 	// Selector: ownerOf(uint256) 6352211e
 	function ownerOf(uint256 tokenId) external view returns (address);
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: safeTransferFromWithData(address,address,uint256,bytes) 60a11672
 	function safeTransferFromWithData(
@@ -95,7 +134,7 @@
 		bytes memory data
 	) external;
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: safeTransferFrom(address,address,uint256) 42842e0e
 	function safeTransferFrom(
@@ -104,6 +143,17 @@
 		uint256 tokenId
 	) external;
 
+	// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE
+	//  TO CONFIRM THAT `to` IS CAPABLE OF RECEIVING NFTS OR ELSE
+	//  THEY MAY BE PERMANENTLY LOST
+	// @dev Throws unless `msg.sender` is the current owner or an authorized
+	//  operator for this NFT. Throws if `from` is not the current owner. Throws
+	//  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.
+	// @param from The current owner of the NFT
+	// @param to The new owner
+	// @param tokenId The NFT to transfer
+	// @param _value Not used for an NFT
+	//
 	// Selector: transferFrom(address,address,uint256) 23b872dd
 	function transferFrom(
 		address from,
@@ -111,20 +161,27 @@
 		uint256 tokenId
 	) external;
 
+	// @notice Set or reaffirm the approved address for an NFT
+	// @dev The zero address indicates there is no approved address.
+	// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized
+	//  operator of the current owner.
+	// @param approved The new approved NFT controller
+	// @param tokenId The NFT to approve
+	//
 	// Selector: approve(address,uint256) 095ea7b3
 	function approve(address approved, uint256 tokenId) external;
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: setApprovalForAll(address,bool) a22cb465
 	function setApprovalForAll(address operator, bool approved) external;
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: getApproved(uint256) 081812fc
 	function getApproved(uint256 tokenId) external view returns (address);
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: isApprovedForAll(address,address) e985e9c5
 	function isApprovedForAll(address owner, address operator)
@@ -135,13 +192,21 @@
 
 // Selector: 5b5e139f
 interface ERC721Metadata is Dummy, ERC165 {
+	// @notice A descriptive name for a collection of NFTs in this contract
+	//
 	// Selector: name() 06fdde03
 	function name() external view returns (string memory);
 
+	// @notice An abbreviated name for NFTs in this contract
+	//
 	// Selector: symbol() 95d89b41
 	function symbol() external view returns (string memory);
 
-	// Returns token's const_metadata
+	// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
+	// @dev Throws if `tokenId` is not a valid NFT. URIs are defined in RFC
+	//  3986. The URI may point to a JSON file that conforms to the "ERC721
+	//  Metadata JSON Schema".
+	// @return token's const_metadata
 	//
 	// Selector: tokenURI(uint256) c87b56dd
 	function tokenURI(uint256 tokenId) external view returns (string memory);
@@ -152,14 +217,21 @@
 	// Selector: mintingFinished() 05d2035b
 	function mintingFinished() external view returns (bool);
 
-	// `token_id` should be obtained with `next_token_id` method,
-	// unlike standard, you can't specify it manually
+	// @notice Function to mint token.
+	// @dev `tokenId` should be obtained with `nextTokenId` method,
+	//  unlike standard, you can't specify it manually
+	// @param to The new owner
+	// @param tokenId ID of the minted NFT
 	//
 	// Selector: mint(address,uint256) 40c10f19
 	function mint(address to, uint256 tokenId) external returns (bool);
 
-	// `token_id` should be obtained with `next_token_id` method,
-	// unlike standard, you can't specify it manually
+	// @notice Function to mint token with the given tokenUri.
+	// @dev `tokenId` should be obtained with `nextTokenId` method,
+	//  unlike standard, you can't specify it manually
+	// @param to The new owner
+	// @param tokenId ID of the minted NFT
+	// @param tokenUri Token URI that would be stored in the NFT properties
 	//
 	// Selector: mintWithTokenURI(address,uint256,string) 50bb4e7f
 	function mintWithTokenURI(
@@ -168,7 +240,7 @@
 		string memory tokenUri
 	) external returns (bool);
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: finishMinting() 7d64bcb4
 	function finishMinting() external returns (bool);
@@ -176,10 +248,15 @@
 
 // Selector: 780e9d63
 interface ERC721Enumerable is Dummy, ERC165 {
+	// @notice Enumerate valid NFTs
+	// @param index A counter less than `totalSupply()`
+	// @return The token identifier for the `index`th NFT,
+	//  (sort order not specified)
+	//
 	// Selector: tokenByIndex(uint256) 4f6ccce7
 	function tokenByIndex(uint256 index) external view returns (uint256);
 
-	// Not implemented
+	// @dev Not implemented
 	//
 	// Selector: tokenOfOwnerByIndex(address,uint256) 2f745c59
 	function tokenOfOwnerByIndex(address owner, uint256 index)
@@ -187,20 +264,38 @@
 		view
 		returns (uint256);
 
+	// @notice Count NFTs tracked by this contract
+	// @return A count of valid NFTs tracked by this contract, where each one of
+	//  them has an assigned and queryable owner not equal to the zero address
+	//
 	// Selector: totalSupply() 18160ddd
 	function totalSupply() external view returns (uint256);
 }
 
 // Selector: 7d9262e6
 interface Collection is Dummy, ERC165 {
+	// Set collection property.
+	//
+	// @param key Property key.
+	// @param value Propery value.
+	//
 	// Selector: setCollectionProperty(string,bytes) 2f073f66
 	function setCollectionProperty(string memory key, bytes memory value)
 		external;
 
+	// Delete collection property.
+	//
+	// @param key Property key.
+	//
 	// Selector: deleteCollectionProperty(string) 7b7debce
 	function deleteCollectionProperty(string memory key) external;
 
-	// Throws error if key not found
+	// Get collection property.
+	//
+	// @dev Throws error if key not found.
+	//
+	// @param key Property key.
+	// @return bytes The property corresponding to the key.
 	//
 	// Selector: collectionProperty(string) cf24fd6d
 	function collectionProperty(string memory key)
@@ -208,69 +303,168 @@
 		view
 		returns (bytes memory);
 
+	// Set the sponsor of the collection.
+	//
+	// @dev In order for sponsorship to work, it must be confirmed on behalf of the sponsor.
+	//
+	// @param sponsor Address of the sponsor from whose account funds will be debited for operations with the contract.
+	//
 	// Selector: setCollectionSponsor(address) 7623402e
 	function setCollectionSponsor(address sponsor) external;
 
+	// Collection sponsorship confirmation.
+	//
+	// @dev After setting the sponsor for the collection, it must be confirmed with this function.
+	//
 	// Selector: confirmCollectionSponsorship() 3c50e97a
 	function confirmCollectionSponsorship() external;
 
+	// Set limits for the collection.
+	// @dev Throws error if limit not found.
+	// @param limit Name of the limit. Valid names:
+	// 	"accountTokenOwnershipLimit",
+	// 	"sponsoredDataSize",
+	// 	"sponsoredDataRateLimit",
+	// 	"tokenLimit",
+	// 	"sponsorTransferTimeout",
+	// 	"sponsorApproveTimeout"
+	// @param value Value of the limit.
+	//
 	// Selector: setCollectionLimit(string,uint32) 6a3841db
 	function setCollectionLimit(string memory limit, uint32 value) external;
 
+	// Set limits for the collection.
+	// @dev Throws error if limit not found.
+	// @param limit Name of the limit. Valid names:
+	// 	"ownerCanTransfer",
+	// 	"ownerCanDestroy",
+	// 	"transfersEnabled"
+	// @param value Value of the limit.
+	//
 	// Selector: setCollectionLimit(string,bool) 993b7fba
 	function setCollectionLimit(string memory limit, bool value) external;
 
+	// Get contract address.
+	//
 	// Selector: contractAddress() f6b4dfb4
 	function contractAddress() external view returns (address);
 
+	// Add collection admin by substrate address.
+	// @param new_admin Substrate administrator address.
+	//
 	// Selector: addCollectionAdminSubstrate(uint256) 5730062b
-	function addCollectionAdminSubstrate(uint256 newAdmin) external view;
+	function addCollectionAdminSubstrate(uint256 newAdmin) external;
 
+	// Remove collection admin by substrate address.
+	// @param admin Substrate administrator address.
+	//
 	// Selector: removeCollectionAdminSubstrate(uint256) 4048fcf9
-	function removeCollectionAdminSubstrate(uint256 newAdmin) external view;
+	function removeCollectionAdminSubstrate(uint256 admin) external;
 
+	// Add collection admin.
+	// @param new_admin Address of the added administrator.
+	//
 	// Selector: addCollectionAdmin(address) 92e462c7
-	function addCollectionAdmin(address newAdmin) external view;
+	function addCollectionAdmin(address newAdmin) external;
 
+	// Remove collection admin.
+	//
+	// @param new_admin Address of the removed administrator.
+	//
 	// Selector: removeCollectionAdmin(address) fafd7b42
-	function removeCollectionAdmin(address admin) external view;
+	function removeCollectionAdmin(address admin) external;
 
+	// Toggle accessibility of collection nesting.
+	//
+	// @param enable If "true" degenerates to nesting: 'Owner' else to nesting: 'Disabled'
+	//
 	// Selector: setCollectionNesting(bool) 112d4586
 	function setCollectionNesting(bool enable) external;
 
+	// Toggle accessibility of collection nesting.
+	//
+	// @param enable If "true" degenerates to nesting: {OwnerRestricted: [1, 2, 3]} else to nesting: 'Disabled'
+	// @param collections Addresses of collections that will be available for nesting.
+	//
 	// Selector: setCollectionNesting(bool,address[]) 64872396
 	function setCollectionNesting(bool enable, address[] memory collections)
 		external;
 
+	// Set the collection access method.
+	// @param mode Access mode
+	// 	0 for Normal
+	// 	1 for AllowList
+	//
 	// Selector: setCollectionAccess(uint8) 41835d4c
 	function setCollectionAccess(uint8 mode) external;
 
+	// Add the user to the allowed list.
+	//
+	// @param user Address of a trusted user.
+	//
 	// Selector: addToCollectionAllowList(address) 67844fe6
-	function addToCollectionAllowList(address user) external view;
+	function addToCollectionAllowList(address user) external;
 
+	// Remove the user from the allowed list.
+	//
+	// @param user Address of a removed user.
+	//
 	// Selector: removeFromCollectionAllowList(address) 85c51acb
-	function removeFromCollectionAllowList(address user) external view;
+	function removeFromCollectionAllowList(address user) external;
 
+	// Switch permission for minting.
+	//
+	// @param mode Enable if "true".
+	//
 	// Selector: setCollectionMintMode(bool) 00018e84
 	function setCollectionMintMode(bool mode) external;
 }
 
 // Selector: d74d154f
 interface ERC721UniqueExtensions is Dummy, ERC165 {
+	// @notice Transfer ownership of an NFT
+	// @dev Throws unless `msg.sender` is the current owner. Throws if `to`
+	//  is the zero address. Throws if `tokenId` is not a valid NFT.
+	// @param to The new owner
+	// @param tokenId The NFT to transfer
+	// @param _value Not used for an NFT
+	//
 	// Selector: transfer(address,uint256) a9059cbb
 	function transfer(address to, uint256 tokenId) external;
 
+	// @notice Burns a specific ERC721 token.
+	// @dev Throws unless `msg.sender` is the current owner or an authorized
+	//  operator for this NFT. Throws if `from` is not the current owner. Throws
+	//  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.
+	// @param from The current owner of the NFT
+	// @param tokenId The NFT to transfer
+	// @param _value Not used for an NFT
+	//
 	// Selector: burnFrom(address,uint256) 79cc6790
 	function burnFrom(address from, uint256 tokenId) external;
 
+	// @notice Returns next free NFT ID.
+	//
 	// Selector: nextTokenId() 75794a3c
 	function nextTokenId() external view returns (uint256);
 
+	// @notice Function to mint multiple tokens.
+	// @dev `tokenIds` should be an array of consecutive numbers and first number
+	//  should be obtained with `nextTokenId` method
+	// @param to The new owner
+	// @param tokenIds IDs of the minted NFTs
+	//
 	// Selector: mintBulk(address,uint256[]) 44a9945e
 	function mintBulk(address to, uint256[] memory tokenIds)
 		external
 		returns (bool);
 
+	// @notice Function to mint multiple tokens with the given tokenUris.
+	// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive
+	//  numbers and first number should be obtained with `nextTokenId` method
+	// @param to The new owner
+	// @param tokens array of pairs of token ID and token URI for minted tokens
+	//
 	// Selector: mintBulkWithTokenURI(address,(uint256,string)[]) 36543006
 	function mintBulkWithTokenURI(address to, Tuple0[] memory tokens)
 		external
addedtests/src/eth/api/UniqueRefungibleToken.soldiffbeforeafterboth
--- /dev/null
+++ b/tests/src/eth/api/UniqueRefungibleToken.sol
@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: OTHER
+// This code is automatically generated
+
+pragma solidity >=0.8.0 <0.9.0;
+
+// Common stubs holder
+interface Dummy {
+
+}
+
+interface ERC165 is Dummy {
+	function supportsInterface(bytes4 interfaceID) external view returns (bool);
+}
+
+// Inline
+interface ERC20Events {
+	event Transfer(address indexed from, address indexed to, uint256 value);
+	event Approval(
+		address indexed owner,
+		address indexed spender,
+		uint256 value
+	);
+}
+
+// Selector: 942e8b22
+interface ERC20 is Dummy, ERC165, ERC20Events {
+	// Selector: name() 06fdde03
+	function name() external view returns (string memory);
+
+	// Selector: symbol() 95d89b41
+	function symbol() external view returns (string memory);
+
+	// Selector: totalSupply() 18160ddd
+	function totalSupply() external view returns (uint256);
+
+	// Selector: decimals() 313ce567
+	function decimals() external view returns (uint8);
+
+	// Selector: balanceOf(address) 70a08231
+	function balanceOf(address owner) external view returns (uint256);
+
+	// Selector: transfer(address,uint256) a9059cbb
+	function transfer(address to, uint256 amount) external returns (bool);
+
+	// Selector: transferFrom(address,address,uint256) 23b872dd
+	function transferFrom(
+		address from,
+		address to,
+		uint256 amount
+	) external returns (bool);
+
+	// Selector: approve(address,uint256) 095ea7b3
+	function approve(address spender, uint256 amount) external returns (bool);
+
+	// Selector: allowance(address,address) dd62ed3e
+	function allowance(address owner, address spender)
+		external
+		view
+		returns (uint256);
+}
+
+// Selector: ab8deb37
+interface ERC20UniqueExtensions is Dummy, ERC165 {
+	// Selector: burnFrom(address,uint256) 79cc6790
+	function burnFrom(address from, uint256 amount) external returns (bool);
+
+	// Selector: repartition(uint256) d2418ca7
+	function repartition(uint256 amount) external returns (bool);
+}
+
+interface UniqueRefungibleToken is
+	Dummy,
+	ERC165,
+	ERC20,
+	ERC20UniqueExtensions
+{}
modifiedtests/src/eth/fungibleAbi.jsondiffbeforeafterboth
--- a/tests/src/eth/fungibleAbi.json
+++ b/tests/src/eth/fungibleAbi.json
@@ -51,6 +51,33 @@
   },
   {
     "inputs": [
+      { "internalType": "address", "name": "newAdmin", "type": "address" }
+    ],
+    "name": "addCollectionAdmin",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "uint256", "name": "newAdmin", "type": "uint256" }
+    ],
+    "name": "addCollectionAdminSubstrate",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "user", "type": "address" }
+    ],
+    "name": "addToCollectionAllowList",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
       { "internalType": "address", "name": "owner", "type": "address" },
       { "internalType": "address", "name": "spender", "type": "address" }
     ],
@@ -97,6 +124,13 @@
   },
   {
     "inputs": [],
+    "name": "confirmCollectionSponsorship",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
     "name": "contractAddress",
     "outputs": [{ "internalType": "address", "name": "", "type": "address" }],
     "stateMutability": "view",
@@ -118,43 +152,51 @@
   },
   {
     "inputs": [],
-    "name": "ethConfirmSponsorship",
-    "outputs": [],
-    "stateMutability": "nonpayable",
+    "name": "name",
+    "outputs": [{ "internalType": "string", "name": "", "type": "string" }],
+    "stateMutability": "view",
     "type": "function"
   },
   {
     "inputs": [
-      { "internalType": "address", "name": "sponsor", "type": "address" }
+      { "internalType": "address", "name": "admin", "type": "address" }
     ],
-    "name": "ethSetSponsor",
+    "name": "removeCollectionAdmin",
     "outputs": [],
     "stateMutability": "nonpayable",
     "type": "function"
   },
   {
-    "inputs": [],
-    "name": "name",
-    "outputs": [{ "internalType": "string", "name": "", "type": "string" }],
-    "stateMutability": "view",
+    "inputs": [
+      { "internalType": "uint256", "name": "admin", "type": "uint256" }
+    ],
+    "name": "removeCollectionAdminSubstrate",
+    "outputs": [],
+    "stateMutability": "nonpayable",
     "type": "function"
   },
   {
     "inputs": [
-      { "internalType": "string", "name": "key", "type": "string" },
-      { "internalType": "bytes", "name": "value", "type": "bytes" }
+      { "internalType": "address", "name": "user", "type": "address" }
     ],
-    "name": "setCollectionProperty",
+    "name": "removeFromCollectionAllowList",
     "outputs": [],
     "stateMutability": "nonpayable",
     "type": "function"
   },
   {
+    "inputs": [{ "internalType": "uint8", "name": "mode", "type": "uint8" }],
+    "name": "setCollectionAccess",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
     "inputs": [
       { "internalType": "string", "name": "limit", "type": "string" },
       { "internalType": "uint32", "name": "value", "type": "uint32" }
     ],
-    "name": "setLimit",
+    "name": "setCollectionLimit",
     "outputs": [],
     "stateMutability": "nonpayable",
     "type": "function"
@@ -164,7 +206,54 @@
       { "internalType": "string", "name": "limit", "type": "string" },
       { "internalType": "bool", "name": "value", "type": "bool" }
     ],
-    "name": "setLimit",
+    "name": "setCollectionLimit",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [{ "internalType": "bool", "name": "mode", "type": "bool" }],
+    "name": "setCollectionMintMode",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [{ "internalType": "bool", "name": "enable", "type": "bool" }],
+    "name": "setCollectionNesting",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "bool", "name": "enable", "type": "bool" },
+      {
+        "internalType": "address[]",
+        "name": "collections",
+        "type": "address[]"
+      }
+    ],
+    "name": "setCollectionNesting",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "string", "name": "key", "type": "string" },
+      { "internalType": "bytes", "name": "value", "type": "bytes" }
+    ],
+    "name": "setCollectionProperty",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "sponsor", "type": "address" }
+    ],
+    "name": "setCollectionSponsor",
     "outputs": [],
     "stateMutability": "nonpayable",
     "type": "function"
modifiedtests/src/eth/nonFungibleAbi.jsondiffbeforeafterboth
--- a/tests/src/eth/nonFungibleAbi.json
+++ b/tests/src/eth/nonFungibleAbi.json
@@ -86,7 +86,7 @@
     ],
     "name": "addCollectionAdmin",
     "outputs": [],
-    "stateMutability": "view",
+    "stateMutability": "nonpayable",
     "type": "function"
   },
   {
@@ -95,7 +95,7 @@
     ],
     "name": "addCollectionAdminSubstrate",
     "outputs": [],
-    "stateMutability": "view",
+    "stateMutability": "nonpayable",
     "type": "function"
   },
   {
@@ -104,7 +104,7 @@
     ],
     "name": "addToCollectionAllowList",
     "outputs": [],
-    "stateMutability": "view",
+    "stateMutability": "nonpayable",
     "type": "function"
   },
   {
@@ -304,16 +304,16 @@
     ],
     "name": "removeCollectionAdmin",
     "outputs": [],
-    "stateMutability": "view",
+    "stateMutability": "nonpayable",
     "type": "function"
   },
   {
     "inputs": [
-      { "internalType": "uint256", "name": "newAdmin", "type": "uint256" }
+      { "internalType": "uint256", "name": "admin", "type": "uint256" }
     ],
     "name": "removeCollectionAdminSubstrate",
     "outputs": [],
-    "stateMutability": "view",
+    "stateMutability": "nonpayable",
     "type": "function"
   },
   {
@@ -322,7 +322,7 @@
     ],
     "name": "removeFromCollectionAllowList",
     "outputs": [],
-    "stateMutability": "view",
+    "stateMutability": "nonpayable",
     "type": "function"
   },
   {
addedtests/src/eth/reFungibleToken.test.tsdiffbeforeafterboth
--- /dev/null
+++ b/tests/src/eth/reFungibleToken.test.ts
@@ -0,0 +1,458 @@
+// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.
+// This file is part of Unique Network.
+
+// Unique Network is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Unique Network is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
+
+import {approve, createCollection, createRefungibleToken, transfer, transferFrom, UNIQUE} from '../util/helpers';
+import {createEthAccount, createEthAccountWithBalance, GAS_ARGS, itWeb3, normalizeEvents, recordEthFee, recordEvents, subToEth, tokenIdToAddress, transferBalanceToEth} from './util/helpers';
+import reFungibleTokenAbi from './reFungibleTokenAbi.json';
+
+import chai from 'chai';
+import chaiAsPromised from 'chai-as-promised';
+chai.use(chaiAsPromised);
+const expect = chai.expect;
+
+describe('Refungible token: Information getting', () => {
+  itWeb3('totalSupply', async ({api, web3, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {name: 'token name', mode: {type: 'ReFungible'}})).collectionId;
+
+    const caller = await createEthAccountWithBalance(api, web3, privateKeyWrapper);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 200n, {Ethereum: caller})).itemId;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address, {from: caller, ...GAS_ARGS});
+    const totalSupply = await contract.methods.totalSupply().call();
+
+    expect(totalSupply).to.equal('200');
+  });
+
+  itWeb3('balanceOf', async ({api, web3, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {name: 'token name', mode: {type: 'ReFungible'}})).collectionId;
+
+    const caller = await createEthAccountWithBalance(api, web3, privateKeyWrapper);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 200n, {Ethereum: caller})).itemId;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address, {from: caller, ...GAS_ARGS});
+    const balance = await contract.methods.balanceOf(caller).call();
+
+    expect(balance).to.equal('200');
+  });
+
+  itWeb3('decimals', async ({api, web3, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {name: 'token name', mode: {type: 'ReFungible'}})).collectionId;
+
+    const caller = await createEthAccountWithBalance(api, web3, privateKeyWrapper);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 200n, {Ethereum: caller})).itemId;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address, {from: caller, ...GAS_ARGS});
+    const decimals = await contract.methods.decimals().call();
+
+    expect(decimals).to.equal('0');
+  });
+});
+
+describe('Refungible: Plain calls', () => {
+  itWeb3('Can perform approve()', async ({web3, api, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {name: 'token name', mode: {type: 'ReFungible'}})).collectionId;
+
+    const owner = await createEthAccountWithBalance(api, web3, privateKeyWrapper);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 200n, {Ethereum: owner})).itemId;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+
+    const spender = createEthAccount(web3);
+
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address, {from: owner, ...GAS_ARGS});
+
+    {
+      const result = await contract.methods.approve(spender, 100).send({from: owner});
+      const events = normalizeEvents(result.events);
+
+      expect(events).to.be.deep.equal([
+        {
+          address,
+          event: 'Approval',
+          args: {
+            owner,
+            spender,
+            value: '100',
+          },
+        },
+      ]);
+    }
+
+    {
+      const allowance = await contract.methods.allowance(owner, spender).call();
+      expect(+allowance).to.equal(100);
+    }
+  });
+
+  itWeb3('Can perform transferFrom()', async ({web3, api, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {name: 'token name', mode: {type: 'ReFungible'}})).collectionId;
+
+    const owner = createEthAccount(web3);
+    await transferBalanceToEth(api, alice, owner);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 200n, {Ethereum: owner})).itemId;
+
+    const spender = createEthAccount(web3);
+    await transferBalanceToEth(api, alice, spender);
+
+    const receiver = createEthAccount(web3);
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address, {from: owner, ...GAS_ARGS});
+
+    await contract.methods.approve(spender, 100).send();
+
+    {
+      const result = await contract.methods.transferFrom(owner, receiver, 49).send({from: spender});
+      const events = normalizeEvents(result.events);
+      expect(events).to.be.deep.equal([
+        {
+          address,
+          event: 'Transfer',
+          args: {
+            from: owner,
+            to: receiver,
+            value: '49',
+          },
+        },
+        {
+          address,
+          event: 'Approval',
+          args: {
+            owner,
+            spender,
+            value: '51',
+          },
+        },
+      ]);
+    }
+
+    {
+      const balance = await contract.methods.balanceOf(receiver).call();
+      expect(+balance).to.equal(49);
+    }
+
+    {
+      const balance = await contract.methods.balanceOf(owner).call();
+      expect(+balance).to.equal(151);
+    }
+  });
+
+  itWeb3('Can perform transfer()', async ({web3, api, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {name: 'token name', mode: {type: 'ReFungible'}})).collectionId;
+
+    const owner = createEthAccount(web3);
+    await transferBalanceToEth(api, alice, owner);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 200n, {Ethereum: owner})).itemId;
+
+    const receiver = createEthAccount(web3);
+    await transferBalanceToEth(api, alice, receiver);
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address, {from: owner, ...GAS_ARGS});
+
+    {
+      const result = await contract.methods.transfer(receiver, 50).send({from: owner});
+      const events = normalizeEvents(result.events);
+      expect(events).to.be.deep.equal([
+        {
+          address,
+          event: 'Transfer',
+          args: {
+            from: owner,
+            to: receiver,
+            value: '50',
+          },
+        },
+      ]);
+    }
+
+    {
+      const balance = await contract.methods.balanceOf(owner).call();
+      expect(+balance).to.equal(150);
+    }
+
+    {
+      const balance = await contract.methods.balanceOf(receiver).call();
+      expect(+balance).to.equal(50);
+    }
+  });
+
+  itWeb3('Can perform repartition()', async ({web3, api, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {name: 'token name', mode: {type: 'ReFungible'}})).collectionId;
+
+    const owner = createEthAccount(web3);
+    await transferBalanceToEth(api, alice, owner);
+
+    const receiver = createEthAccount(web3);
+    await transferBalanceToEth(api, alice, receiver);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 100n, {Ethereum: owner})).itemId;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address, {from: owner, ...GAS_ARGS});
+
+    await contract.methods.repartition(200).send({from: owner});
+    expect(+await contract.methods.balanceOf(owner).call()).to.be.equal(200);
+    await contract.methods.transfer(receiver, 110).send({from: owner});
+    expect(+await contract.methods.balanceOf(owner).call()).to.be.equal(90);
+    expect(+await contract.methods.balanceOf(receiver).call()).to.be.equal(110);
+    
+    await expect(contract.methods.repartition(80).send({from: owner})).to.eventually.be.rejected;
+
+    await contract.methods.transfer(receiver, 90).send({from: owner});
+    expect(+await contract.methods.balanceOf(owner).call()).to.be.equal(0);
+    expect(+await contract.methods.balanceOf(receiver).call()).to.be.equal(200);
+
+    await contract.methods.repartition(150).send({from: receiver});
+    await expect(contract.methods.transfer(owner, 160).send({from: receiver})).to.eventually.be.rejected;
+    expect(+await contract.methods.balanceOf(receiver).call()).to.be.equal(150);
+  });
+
+  itWeb3('Can repartition with increased amount', async ({web3, api, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {name: 'token name', mode: {type: 'ReFungible'}})).collectionId;
+
+    const owner = createEthAccount(web3);
+    await transferBalanceToEth(api, alice, owner);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 100n, {Ethereum: owner})).itemId;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address, {from: owner, ...GAS_ARGS});
+
+    const result = await contract.methods.repartition(200).send();
+    const events = normalizeEvents(result.events);
+
+    expect(events).to.deep.equal([
+      {
+        address,
+        event: 'Transfer',
+        args: {
+          from: '0x0000000000000000000000000000000000000000',
+          to: owner,
+          value: '100',
+        },
+      },
+    ]);
+  });
+
+  itWeb3('Can repartition with decreased amount', async ({web3, api, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {name: 'token name', mode: {type: 'ReFungible'}})).collectionId;
+
+    const owner = createEthAccount(web3);
+    await transferBalanceToEth(api, alice, owner);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 100n, {Ethereum: owner})).itemId;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address, {from: owner, ...GAS_ARGS});
+
+    const result = await contract.methods.repartition(50).send();
+    const events = normalizeEvents(result.events);
+    expect(events).to.deep.equal([
+      {
+        address,
+        event: 'Transfer',
+        args: {
+          from: owner,
+          to: '0x0000000000000000000000000000000000000000',
+          value: '50',
+        },
+      },
+    ]);
+  });
+});
+
+describe('Refungible: Fees', () => {
+  itWeb3('approve() call fee is less than 0.2UNQ', async ({web3, api, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {mode: {type: 'ReFungible'}})).collectionId;
+
+    const owner = await createEthAccountWithBalance(api, web3, privateKeyWrapper);
+    const spender = createEthAccount(web3);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 200n, {Ethereum: owner})).itemId;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address, {from: owner, ...GAS_ARGS});
+
+    const cost = await recordEthFee(api, owner, () => contract.methods.approve(spender, 100).send({from: owner}));
+    expect(cost < BigInt(0.2 * Number(UNIQUE)));
+  });
+
+  itWeb3('transferFrom() call fee is less than 0.2UNQ', async ({web3, api, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {mode: {type: 'ReFungible'}})).collectionId;
+
+    const owner = await createEthAccountWithBalance(api, web3, privateKeyWrapper);
+    const spender = await createEthAccountWithBalance(api, web3, privateKeyWrapper);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 200n, {Ethereum: owner})).itemId;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address, {from: owner, ...GAS_ARGS});
+
+    await contract.methods.approve(spender, 100).send({from: owner});
+
+    const cost = await recordEthFee(api, spender, () => contract.methods.transferFrom(owner, spender, 100).send({from: spender}));
+    expect(cost < BigInt(0.2 * Number(UNIQUE)));
+  });
+
+  itWeb3('transfer() call fee is less than 0.2UNQ', async ({web3, api, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {mode: {type: 'ReFungible'}})).collectionId;
+
+    const owner = await createEthAccountWithBalance(api, web3, privateKeyWrapper);
+    const receiver = createEthAccount(web3);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 200n, {Ethereum: owner})).itemId;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address, {from: owner, ...GAS_ARGS});
+
+    const cost = await recordEthFee(api, owner, () => contract.methods.transfer(receiver, 100).send({from: owner}));
+    expect(cost < BigInt(0.2 * Number(UNIQUE)));
+  });
+});
+
+describe('Refungible: Substrate calls', () => {
+  itWeb3('Events emitted for approve()', async ({web3, api, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {mode: {type: 'ReFungible'}})).collectionId;
+
+    const receiver = createEthAccount(web3);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 200n)).itemId;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address);
+
+    const events = await recordEvents(contract, async () => {
+      expect(await approve(api, collectionId, tokenId, alice, {Ethereum: receiver}, 100n)).to.be.true;
+    });
+
+    expect(events).to.be.deep.equal([
+      {
+        address,
+        event: 'Approval',
+        args: {
+          owner: subToEth(alice.address),
+          spender: receiver,
+          value: '100',
+        },
+      },
+    ]);
+  });
+
+  itWeb3('Events emitted for transferFrom()', async ({web3, api, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {mode: {type: 'ReFungible'}})).collectionId;
+    const bob = privateKeyWrapper('//Bob');
+
+    const receiver = createEthAccount(web3);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 200n)).itemId;
+    expect(await approve(api, collectionId, tokenId, alice, bob.address, 100n)).to.be.true;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address);
+
+    const events = await recordEvents(contract, async () => {
+      expect(await transferFrom(api, collectionId, tokenId, bob, alice, {Ethereum: receiver},  51n)).to.be.true;
+    });
+
+    expect(events).to.be.deep.equal([
+      {
+        address,
+        event: 'Transfer',
+        args: {
+          from: subToEth(alice.address),
+          to: receiver,
+          value: '51',
+        },
+      },
+      {
+        address,
+        event: 'Approval',
+        args: {
+          owner: subToEth(alice.address),
+          spender: subToEth(bob.address),
+          value: '49',
+        },
+      },
+    ]);
+  });
+
+  itWeb3('Events emitted for transfer()', async ({web3, api, privateKeyWrapper}) => {
+    const alice = privateKeyWrapper('//Alice');
+
+    const collectionId = (await createCollection(api, alice, {mode: {type: 'ReFungible'}})).collectionId;
+
+    const receiver = createEthAccount(web3);
+
+    const tokenId = (await createRefungibleToken(api, alice, collectionId, 200n)).itemId;
+
+    const address = tokenIdToAddress(collectionId, tokenId);
+    const contract = new web3.eth.Contract(reFungibleTokenAbi as any, address);
+
+    const events = await recordEvents(contract, async () => {
+      expect(await transfer(api, collectionId, tokenId, alice, {Ethereum: receiver},  51n)).to.be.true;
+    });
+
+    expect(events).to.be.deep.equal([
+      {
+        address,
+        event: 'Transfer',
+        args: {
+          from: subToEth(alice.address),
+          to: receiver,
+          value: '51',
+        },
+      },
+    ]);
+  });
+});
addedtests/src/eth/reFungibleTokenAbi.jsondiffbeforeafterboth
--- /dev/null
+++ b/tests/src/eth/reFungibleTokenAbi.json
@@ -0,0 +1,158 @@
+[
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "owner",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "spender",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "value",
+        "type": "uint256"
+      }
+    ],
+    "name": "Approval",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "from",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "internalType": "address",
+        "name": "to",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "internalType": "uint256",
+        "name": "value",
+        "type": "uint256"
+      }
+    ],
+    "name": "Transfer",
+    "type": "event"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "owner", "type": "address" },
+      { "internalType": "address", "name": "spender", "type": "address" }
+    ],
+    "name": "allowance",
+    "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "spender", "type": "address" },
+      { "internalType": "uint256", "name": "amount", "type": "uint256" }
+    ],
+    "name": "approve",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "owner", "type": "address" }
+    ],
+    "name": "balanceOf",
+    "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "from", "type": "address" },
+      { "internalType": "uint256", "name": "amount", "type": "uint256" }
+    ],
+    "name": "burnFrom",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "decimals",
+    "outputs": [{ "internalType": "uint8", "name": "", "type": "uint8" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "name",
+    "outputs": [{ "internalType": "string", "name": "", "type": "string" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "uint256", "name": "amount", "type": "uint256" }
+    ],
+    "name": "repartition",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "bytes4", "name": "interfaceID", "type": "bytes4" }
+    ],
+    "name": "supportsInterface",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "symbol",
+    "outputs": [{ "internalType": "string", "name": "", "type": "string" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "totalSupply",
+    "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "to", "type": "address" },
+      { "internalType": "uint256", "name": "amount", "type": "uint256" }
+    ],
+    "name": "transfer",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "from", "type": "address" },
+      { "internalType": "address", "name": "to", "type": "address" },
+      { "internalType": "uint256", "name": "amount", "type": "uint256" }
+    ],
+    "name": "transferFrom",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  }
+]
addedtests/src/fungible.test.tsdiffbeforeafterboth
--- /dev/null
+++ b/tests/src/fungible.test.ts
@@ -0,0 +1,184 @@
+// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.
+// This file is part of Unique Network.
+
+// Unique Network is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Unique Network is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
+
+import {default as usingApi} from './substrate/substrate-api';
+import {IKeyringPair} from '@polkadot/types/types';
+import {
+  getBalance,
+  createMultipleItemsExpectSuccess,
+  isTokenExists,
+  getLastTokenId,
+  getAllowance,
+  approve,
+  transferFrom,
+  createCollection,
+  transfer,
+  burnItem,
+  normalizeAccountId,
+  CrossAccountId,
+  createFungibleItemExpectSuccess,
+  U128_MAX,
+  burnFromExpectSuccess,
+} from './util/helpers';
+
+import chai from 'chai';
+import chaiAsPromised from 'chai-as-promised';
+chai.use(chaiAsPromised);
+const expect = chai.expect;
+
+let alice: IKeyringPair;
+let bob: IKeyringPair;
+
+describe('integration test: Fungible functionality:', () => {
+  before(async () => {
+    await usingApi(async (api, privateKeyWrapper) => {
+      alice = privateKeyWrapper('//Alice');
+      bob = privateKeyWrapper('//Bob');
+    });
+  });
+
+  it('Create fungible collection and token', async () => {
+    await usingApi(async api => {
+      const createCollectionResult = await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}});
+      expect(createCollectionResult.success).to.be.true;
+      const collectionId  = createCollectionResult.collectionId;
+      const defaultTokenId = await getLastTokenId(api, collectionId);
+      const aliceTokenId = await createFungibleItemExpectSuccess(alice, collectionId, {Value: U128_MAX}, alice.address);
+      const aliceBalance = await getBalance(api, collectionId, alice, aliceTokenId); 
+      const itemCountAfter = await getLastTokenId(api, collectionId);
+      
+      // What to expect
+      // tslint:disable-next-line:no-unused-expression
+      expect(itemCountAfter).to.be.equal(defaultTokenId);
+      expect(aliceBalance).to.be.equal(U128_MAX);
+    });
+  });
+  
+  it('RPC method tokenOnewrs for fungible collection and token', async () => {
+    await usingApi(async (api, privateKeyWrapper) => {
+      const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
+      const facelessCrowd = Array.from(Array(7).keys()).map(i => normalizeAccountId(privateKeyWrapper(i.toString())));
+      
+      const createCollectionResult = await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}});
+      const collectionId = createCollectionResult.collectionId;
+      const aliceTokenId = await createFungibleItemExpectSuccess(alice, collectionId, {Value: U128_MAX}, alice.address);
+     
+      await transfer(api, collectionId, aliceTokenId, alice, bob, 1000n);
+      await transfer(api, collectionId, aliceTokenId, alice, ethAcc, 900n);
+            
+      for (let i = 0; i < 7; i++) {
+        await transfer(api, collectionId, aliceTokenId, alice, facelessCrowd[i], 1);
+      } 
+      
+      const owners = await api.rpc.unique.tokenOwners(collectionId, aliceTokenId);
+      const ids = (owners.toJSON() as CrossAccountId[]).map(s => normalizeAccountId(s));
+      const aliceID = normalizeAccountId(alice);
+      const bobId = normalizeAccountId(bob);
+
+      // What to expect
+      // tslint:disable-next-line:no-unused-expression
+      expect(ids).to.deep.include.members([aliceID, ethAcc, bobId, ...facelessCrowd]);
+      expect(owners.length == 10).to.be.true;
+      
+      const eleven = privateKeyWrapper('11');
+      expect(await transfer(api, collectionId, aliceTokenId, alice, eleven, 10n)).to.be.true;
+      expect((await api.rpc.unique.tokenOwners(collectionId, aliceTokenId)).length).to.be.equal(10);
+    });
+  });
+  
+  it('Transfer token', async () => {
+    await usingApi(async api => {
+      const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
+      const collectionId = (await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}})).collectionId;
+      const tokenId = await createFungibleItemExpectSuccess(alice, collectionId, {Value: 500n}, alice.address);
+
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(500n);
+      expect(await transfer(api, collectionId, tokenId, alice, bob, 60n)).to.be.true;
+      expect(await transfer(api, collectionId, tokenId, alice, ethAcc, 140n)).to.be.true;
+
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(300n);
+      expect(await getBalance(api, collectionId, bob, tokenId)).to.be.equal(60n);
+      expect(await getBalance(api, collectionId, ethAcc, tokenId)).to.be.equal(140n);
+      await expect(transfer(api, collectionId, tokenId, alice, bob, 350n)).to.eventually.be.rejected;
+    });
+  });
+
+  it('Tokens multiple creation', async () => {
+    await usingApi(async api => {
+      const collectionId = (await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}})).collectionId;
+      
+      const args = [
+        {Fungible: {Value: 500n}},
+        {Fungible: {Value: 400n}},
+        {Fungible: {Value: 300n}},
+      ];
+      
+      await createMultipleItemsExpectSuccess(alice, collectionId, args);
+      expect(await getBalance(api, collectionId, alice, 0)).to.be.equal(1200n);
+    });   
+  });
+
+  it('Burn some tokens ', async () => {
+    await usingApi(async api => {   
+      const collectionId = (await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}})).collectionId;
+      const tokenId = (await createFungibleItemExpectSuccess(alice, collectionId, {Value: 500n}, alice.address));
+      expect(await isTokenExists(api, collectionId, tokenId)).to.be.true;
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(500n);
+      expect(await burnItem(api, alice, collectionId, tokenId, 499n)).to.be.true;
+      expect(await isTokenExists(api, collectionId, tokenId)).to.be.true;
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(1n);
+    });
+  });
+  
+  it('Burn all tokens ', async () => {
+    await usingApi(async api => {   
+      const collectionId = (await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}})).collectionId;
+      const tokenId = (await createFungibleItemExpectSuccess(alice, collectionId, {Value: 500n}, alice.address));
+      expect(await isTokenExists(api, collectionId, tokenId)).to.be.true;
+      expect(await burnItem(api, alice, collectionId, tokenId, 500n)).to.be.true;
+      expect(await isTokenExists(api, collectionId, tokenId)).to.be.true;
+      
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(0n);
+      expect((await api.rpc.unique.totalPieces(collectionId, tokenId)).value.toBigInt()).to.be.equal(0n);
+    });
+  });
+
+  it('Set allowance for token', async () => {
+    await usingApi(async api => {
+      const collectionId = (await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}})).collectionId;
+      const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
+      
+      const tokenId = (await createFungibleItemExpectSuccess(alice, collectionId, {Value: 100n}, alice.address));
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(100n);
+
+      expect(await approve(api, collectionId, tokenId, alice, bob, 60n)).to.be.true;
+      expect(await getAllowance(api, collectionId, alice, bob, tokenId)).to.be.equal(60n);
+      expect(await getBalance(api, collectionId, bob, tokenId)).to.be.equal(0n);
+      
+      expect(await transferFrom(api, collectionId, tokenId, bob, alice, bob,  20n)).to.be.true;
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(80n);
+      expect(await getBalance(api, collectionId, bob, tokenId)).to.be.equal(20n);
+      expect(await getAllowance(api, collectionId, alice, bob, tokenId)).to.be.equal(40n);
+      
+      await burnFromExpectSuccess(bob, alice, collectionId, tokenId, 10n);
+     
+      expect(await getBalance(api, collectionId, alice, tokenId)).to.be.equal(70n);
+      expect(await getAllowance(api, collectionId, alice, bob, tokenId)).to.be.equal(30n);
+      expect(await transferFrom(api, collectionId, tokenId, bob, alice, ethAcc,  10n)).to.be.true;
+      expect(await getBalance(api, collectionId, ethAcc, tokenId)).to.be.equal(10n);
+    });
+  });
+});
modifiedtests/src/interfaces/augment-api-consts.tsdiffbeforeafterboth
--- a/tests/src/interfaces/augment-api-consts.ts
+++ b/tests/src/interfaces/augment-api-consts.ts
@@ -29,7 +29,13 @@
       [key: string]: Codec;
     };
     common: {
+      /**
+       * Maximum admins per collection.
+       **/
       collectionAdminsLimit: u32 & AugmentedConst<ApiType>;
+      /**
+       * Set price to create a collection.
+       **/
       collectionCreationPrice: u128 & AugmentedConst<ApiType>;
       /**
        * Generic const
modifiedtests/src/interfaces/augment-api-errors.tsdiffbeforeafterboth
--- a/tests/src/interfaces/augment-api-errors.ts
+++ b/tests/src/interfaces/augment-api-errors.ts
@@ -285,7 +285,7 @@
        **/
       FungibleItemsDontHaveData: AugmentedError<ApiType>;
       /**
-       * Not default id passed as TokenId argument.
+       * Fungible tokens hold no ID, and the default value of TokenId for Fungible collection is 0.
        **/
       FungibleItemsHaveNoId: AugmentedError<ApiType>;
       /**
@@ -596,7 +596,7 @@
     };
     unique: {
       /**
-       * Decimal_points parameter must be lower than MAX_DECIMAL_POINTS constant, currently it is 30.
+       * Decimal_points parameter must be lower than [`up_data_structs::MAX_DECIMAL_POINTS`].
        **/
       CollectionDecimalPointLimitExceeded: AugmentedError<ApiType>;
       /**
@@ -608,7 +608,7 @@
        **/
       EmptyArgument: AugmentedError<ApiType>;
       /**
-       * Repertition is only supported by refungible collection
+       * Repertition is only supported by refungible collection.
        **/
       RepartitionCalledOnNonRefungibleCollection: AugmentedError<ApiType>;
       /**
modifiedtests/src/interfaces/augment-api-events.tsdiffbeforeafterboth
--- a/tests/src/interfaces/augment-api-events.ts
+++ b/tests/src/interfaces/augment-api-events.ts
@@ -59,114 +59,47 @@
     };
     common: {
       /**
-       * Sponsoring allowance was approved.
-       * 
-       * # Arguments
-       * 
-       * * collection_id - todo:doc flesh out
-       * * item_id
-       * * sender
-       * * spender
-       * * amount
+       * Amount pieces of token owned by `sender` was approved for `spender`.
        **/
       Approved: AugmentedEvent<ApiType, [u32, u32, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmAccountBasicCrossAccountIdRepr, u128]>;
       /**
        * New collection was created
-       * 
-       * # Arguments
-       * 
-       * * collection_id - Globally unique identifier of newly created collection.
-       * * mode - [CollectionMode] converted into u8.
-       * * account_id - Collection owner.
        **/
       CollectionCreated: AugmentedEvent<ApiType, [u32, u8, AccountId32]>;
       /**
        * New collection was destroyed
-       * 
-       * # Arguments
-       * 
-       * * collection_id - Globally unique identifier of collection that has been destroyed.
        **/
       CollectionDestroyed: AugmentedEvent<ApiType, [u32]>;
       /**
-       * Collection property was deleted.
-       * 
-       * # Arguments
-       * 
-       * * collection_id - ID of the collection, whose property was just deleted.
-       * * property_key - Key of the property that was just deleted.
+       * The property has been deleted.
        **/
       CollectionPropertyDeleted: AugmentedEvent<ApiType, [u32, Bytes]>;
       /**
-       * Collection property was added or edited.
-       * 
-       * # Arguments
-       * 
-       * * collection_id - ID of the collection, whose property was just set.
-       * * property_key - Key of the property that was just set.
+       * The colletion property has been added or edited.
        **/
       CollectionPropertySet: AugmentedEvent<ApiType, [u32, Bytes]>;
       /**
        * New item was created.
-       * 
-       * # Arguments
-       * 
-       * * collection_id - ID of the collection where the item was created.
-       * * item_id - ID of the item. Unique within the collection.
-       * * recipient - Owner of the newly created item.
-       * * amount - The amount of tokens that were created (always 1 for NFT).
        **/
       ItemCreated: AugmentedEvent<ApiType, [u32, u32, PalletEvmAccountBasicCrossAccountIdRepr, u128]>;
       /**
        * Collection item was burned.
-       * 
-       * # Arguments
-       * 
-       * * collection_id - Identifier of the collection to which the burned NFT belonged.
-       * * item_id - Identifier of burned NFT.
-       * * owner - Which user has destroyed their tokens.
-       * * amount - Amount of tokens that were destroyed (always 1 for NFT).
        **/
       ItemDestroyed: AugmentedEvent<ApiType, [u32, u32, PalletEvmAccountBasicCrossAccountIdRepr, u128]>;
       /**
-       * Token property permission was added or updated for a collection.
-       * 
-       * # Arguments
-       * 
-       * * collection_id - ID of the collection, whose permissions were just set/updated.
-       * * property_key - Key of the property of the set/updated permission.
+       * The token property permission of a collection has been set.
        **/
       PropertyPermissionSet: AugmentedEvent<ApiType, [u32, Bytes]>;
       /**
-       * Item property was deleted.
-       * 
-       * # Arguments
-       * 
-       * * collection_id - ID of the collection, whose token's property was just deleted.
-       * * item_id - ID of the item, whose property was just deleted.
-       * * property_key - Key of the property that was just deleted.
+       * The token property has been deleted.
        **/
       TokenPropertyDeleted: AugmentedEvent<ApiType, [u32, u32, Bytes]>;
       /**
-       * Item property was added or edited.
-       * 
-       * # Arguments
-       * 
-       * * collection_id - ID of the collection, whose token's property was just set.
-       * * item_id - ID of the item, whose property was just set.
-       * * property_key - Key of the property that was just set.
+       * The token property has been added or edited.
        **/
       TokenPropertySet: AugmentedEvent<ApiType, [u32, u32, Bytes]>;
       /**
-       * Item was transferred.
-       * 
-       * # Arguments
-       * 
-       * * collection_id - ID of the collection to which the item belongs.
-       * * item_id - ID of the item transferred.
-       * * sender - Original owner of the item.
-       * * recipient - New owner of the item.
-       * * amount - Amount of tokens that were transferred (always 1 for NFT).
+       * Item was transferred
        **/
       Transfer: AugmentedEvent<ApiType, [u32, u32, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmAccountBasicCrossAccountIdRepr, u128]>;
       /**
@@ -569,94 +502,77 @@
        * Address was added to the allow list
        * 
        * # Arguments
-       * 
-       * * collection_id: Globally unique collection identifier.
-       * 
-       * * user:  Address.
+       * * collection_id: ID of the affected collection.
+       * * user: Address of the added account.
        **/
       AllowListAddressAdded: AugmentedEvent<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
        * Address was removed from the allow list
        * 
        * # Arguments
-       * 
-       * * collection_id: Globally unique collection identifier.
-       * 
-       * * user:  Address.
+       * * collection_id: ID of the affected collection.
+       * * user: Address of the removed account.
        **/
       AllowListAddressRemoved: AugmentedEvent<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
        * Collection admin was added
        * 
        * # Arguments
-       * 
-       * * collection_id: Globally unique collection identifier.
-       * 
-       * * admin:  Admin address.
+       * * collection_id: ID of the affected collection.
+       * * admin: Admin address.
        **/
       CollectionAdminAdded: AugmentedEvent<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
        * Collection admin was removed
        * 
        * # Arguments
-       * 
-       * * collection_id: Globally unique collection identifier.
-       * 
-       * * admin:  Admin address.
+       * * collection_id: ID of the affected collection.
+       * * admin: Removed admin address.
        **/
       CollectionAdminRemoved: AugmentedEvent<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
        * Collection limits were set
        * 
        * # Arguments
-       * 
-       * * collection_id: Globally unique collection identifier.
+       * * collection_id: ID of the affected collection.
        **/
       CollectionLimitSet: AugmentedEvent<ApiType, [u32]>;
       /**
        * Collection owned was changed
        * 
        * # Arguments
-       * 
-       * * collection_id: Globally unique collection identifier.
-       * 
-       * * owner:  New owner address.
+       * * collection_id: ID of the affected collection.
+       * * owner: New owner address.
        **/
       CollectionOwnedChanged: AugmentedEvent<ApiType, [u32, AccountId32]>;
       /**
        * Collection permissions were set
        * 
        * # Arguments
-       * 
-       * * collection_id: Globally unique collection identifier.
+       * * collection_id: ID of the affected collection.
        **/
       CollectionPermissionSet: AugmentedEvent<ApiType, [u32]>;
       /**
        * Collection sponsor was removed
        * 
        * # Arguments
-       * 
-       * * collection_id: Globally unique collection identifier.
+       * * collection_id: ID of the affected collection.
        **/
       CollectionSponsorRemoved: AugmentedEvent<ApiType, [u32]>;
       /**
        * Collection sponsor was set
        * 
        * # Arguments
-       * 
-       * * collection_id: Globally unique collection identifier.
-       * 
-       * * owner:  New sponsor address.
+       * * collection_id: ID of the affected collection.
+       * * owner: New sponsor address.
        **/
       CollectionSponsorSet: AugmentedEvent<ApiType, [u32, AccountId32]>;
       /**
        * New sponsor was confirm
        * 
        * # Arguments
-       * 
-       * * collection_id: Globally unique collection identifier.
-       * 
-       * * sponsor:  New sponsor address.
+       * * collection_id: ID of the affected collection.
+       * * sponsor: New sponsor address.
        **/
       SponsorshipConfirmed: AugmentedEvent<ApiType, [u32, AccountId32]>;
       /**
modifiedtests/src/interfaces/augment-api-query.tsdiffbeforeafterboth
--- a/tests/src/interfaces/augment-api-query.ts
+++ b/tests/src/interfaces/augment-api-query.ts
@@ -70,39 +70,39 @@
     };
     common: {
       /**
-       * Amount of collection admins
+       * Storage of the amount of collection admins.
        **/
       adminAmount: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<u32>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
       /**
-       * Allowlisted collection users
+       * Allowlisted collection users.
        **/
       allowlist: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => Observable<bool>, [u32, PalletEvmAccountBasicCrossAccountIdRepr]> & QueryableStorageEntry<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
-       * Collection info
+       * Storage of collection info.
        **/
       collectionById: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<Option<UpDataStructsCollection>>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
       /**
-       * Collection properties
+       * Storage of collection properties.
        **/
       collectionProperties: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<UpDataStructsProperties>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
       /**
-       * Token permissions of a collection
+       * Storage of token property permissions of a collection.
        **/
       collectionPropertyPermissions: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<BTreeMap<Bytes, UpDataStructsPropertyPermission>>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
       /**
-       * The number of created collections. Essentially contains the last collection ID.
+       * Storage of the count of created collections. Essentially contains the last collection ID.
        **/
       createdCollectionCount: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
       /**
-       * The number of destroyed collections
+       * Storage of the count of deleted collections.
        **/
       destroyedCollectionCount: AugmentedQuery<ApiType, () => Observable<u32>, []> & QueryableStorageEntry<ApiType, []>;
       /**
-       * Not used by code, exists only to provide some types to metadata
+       * Not used by code, exists only to provide some types to metadata.
        **/
       dummyStorageValue: AugmentedQuery<ApiType, () => Observable<Option<ITuple<[UpDataStructsCollectionStats, u32, u32, UpDataStructsTokenChild, PhantomTypeUpDataStructs]>>>, []> & QueryableStorageEntry<ApiType, []>;
       /**
-       * List of collection admins
+       * List of collection admins.
        **/
       isAdmin: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => Observable<bool>, [u32, PalletEvmAccountBasicCrossAccountIdRepr]> & QueryableStorageEntry<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
@@ -200,7 +200,7 @@
     };
     fungible: {
       /**
-       * todo:doc
+       * Storage for assets delegated to a limited extent to other users.
        **/
       allowance: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array, arg3: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => Observable<u128>, [u32, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmAccountBasicCrossAccountIdRepr]> & QueryableStorageEntry<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
@@ -244,11 +244,11 @@
     };
     nonfungible: {
       /**
-       * Amount of tokens owned in a collection.
+       * Amount of tokens owned by an account in a collection.
        **/
       accountBalance: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => Observable<u32>, [u32, PalletEvmAccountBasicCrossAccountIdRepr]> & QueryableStorageEntry<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
-       * todo:doc
+       * Allowance set by a token owner for another user to perform one of certain transactions on a token.
        **/
       allowance: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array) => Observable<Option<PalletEvmAccountBasicCrossAccountIdRepr>>, [u32, u32]> & QueryableStorageEntry<ApiType, [u32, u32]>;
       /**
@@ -256,7 +256,15 @@
        **/
       owned: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array, arg3: u32 | AnyNumber | Uint8Array) => Observable<bool>, [u32, PalletEvmAccountBasicCrossAccountIdRepr, u32]> & QueryableStorageEntry<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr, u32]>;
       /**
-       * Scoped, auxiliary properties of a token, primarily used for on-chain operations.
+       * Custom data of a token that is serialized to bytes,
+       * primarily reserved for on-chain operations,
+       * normally obscured from the external users.
+       * 
+       * Auxiliary properties are slightly different from
+       * usual [`TokenProperties`] due to an unlimited number
+       * and separately stored and written-to key-value pairs.
+       * 
+       * Currently used to store RMRK data.
        **/
       tokenAuxProperties: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array, arg3: UpDataStructsPropertyScope | 'None' | 'Rmrk' | number | Uint8Array, arg4: Bytes | string | Uint8Array) => Observable<Option<Bytes>>, [u32, u32, UpDataStructsPropertyScope, Bytes]> & QueryableStorageEntry<ApiType, [u32, u32, UpDataStructsPropertyScope, Bytes]>;
       /**
@@ -268,7 +276,7 @@
        **/
       tokenData: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array) => Observable<Option<PalletNonfungibleItemData>>, [u32, u32]> & QueryableStorageEntry<ApiType, [u32, u32]>;
       /**
-       * Key-value pairs, describing the metadata of a token.
+       * Map of key-value pairs, describing the metadata of a token.
        **/
       tokenProperties: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array) => Observable<UpDataStructsProperties>, [u32, u32]> & QueryableStorageEntry<ApiType, [u32, u32]>;
       /**
@@ -447,11 +455,11 @@
        **/
       accountBalance: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => Observable<u32>, [u32, PalletEvmAccountBasicCrossAccountIdRepr]> & QueryableStorageEntry<ApiType, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
-       * todo:doc
+       * Allowance set by a token owner for another user to perform one of certain transactions on a number of pieces of a token.
        **/
       allowance: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array, arg3: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array, arg4: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => Observable<u128>, [u32, u32, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmAccountBasicCrossAccountIdRepr]> & QueryableStorageEntry<ApiType, [u32, u32, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
-       * Amount of pieces of a token owned by an account.
+       * Amount of token pieces owned by account.
        **/
       balance: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array, arg3: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => Observable<u128>, [u32, u32, PalletEvmAccountBasicCrossAccountIdRepr]> & QueryableStorageEntry<ApiType, [u32, u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
@@ -463,6 +471,10 @@
        **/
       tokenData: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array) => Observable<PalletRefungibleItemData>, [u32, u32]> & QueryableStorageEntry<ApiType, [u32, u32]>;
       /**
+       * Amount of pieces a refungible token is split into.
+       **/
+      tokenProperties: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array) => Observable<UpDataStructsProperties>, [u32, u32]> & QueryableStorageEntry<ApiType, [u32, u32]>;
+      /**
        * Amount of tokens burnt in a collection.
        **/
       tokensBurnt: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<u32>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
@@ -471,7 +483,7 @@
        **/
       tokensMinted: AugmentedQuery<ApiType, (arg: u32 | AnyNumber | Uint8Array) => Observable<u32>, [u32]> & QueryableStorageEntry<ApiType, [u32]>;
       /**
-       * Amount of pieces a refungible token is split into.
+       * Total amount of pieces for token
        **/
       totalSupply: AugmentedQuery<ApiType, (arg1: u32 | AnyNumber | Uint8Array, arg2: u32 | AnyNumber | Uint8Array) => Observable<u128>, [u32, u32]> & QueryableStorageEntry<ApiType, [u32, u32]>;
       /**
modifiedtests/src/interfaces/augment-api-rpc.tsdiffbeforeafterboth
--- a/tests/src/interfaces/augment-api-rpc.ts
+++ b/tests/src/interfaces/augment-api-rpc.ts
@@ -673,6 +673,10 @@
        **/
       collectionTokens: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, at?: Hash | string | Uint8Array) => Observable<Vec<u32>>>;
       /**
+       * Get token constant metadata
+       **/
+      constMetadata: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, at?: Hash | string | Uint8Array) => Observable<Bytes>>;
+      /**
        * Get effective collection limits
        **/
       effectiveCollectionLimits: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, at?: Hash | string | Uint8Array) => Observable<Option<UpDataStructsCollectionLimits>>>;
@@ -705,6 +709,10 @@
        **/
       tokenOwner: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, at?: Hash | string | Uint8Array) => Observable<Option<PalletEvmAccountBasicCrossAccountIdRepr>>>;
       /**
+       * Returns 10 tokens owners in no particular order
+       **/
+      tokenOwners: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, at?: Hash | string | Uint8Array) => Observable<Vec<PalletEvmAccountBasicCrossAccountIdRepr>>>;
+      /**
        * Get token properties, optionally limited to the provided keys
        **/
       tokenProperties: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, propertyKeys?: Vec<Text> | (Text | string)[], at?: Hash | string | Uint8Array) => Observable<Vec<UpDataStructsProperty>>>;
@@ -720,6 +728,10 @@
        * Get the amount of distinctive tokens present in a collection
        **/
       totalSupply: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, at?: Hash | string | Uint8Array) => Observable<u32>>;
+      /**
+       * Get token variable metadata
+       **/
+      variableMetadata: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, at?: Hash | string | Uint8Array) => Observable<Bytes>>;
     };
     web3: {
       /**
modifiedtests/src/interfaces/augment-api-tx.tsdiffbeforeafterboth
--- a/tests/src/interfaces/augment-api-tx.ts
+++ b/tests/src/interfaces/augment-api-tx.ts
@@ -730,18 +730,22 @@
     };
     unique: {
       /**
-       * Adds an admin of the collection.
-       * NFT Collection can be controlled by multiple admin addresses (some which can also be servers, for example). Admins can issue and burn NFTs, as well as add and remove other admins, but cannot change NFT or Collection ownership.
+       * Add an admin to a collection.
+       * 
+       * NFT Collection can be controlled by multiple admin addresses
+       * (some which can also be servers, for example). Admins can issue
+       * and burn NFTs, as well as add and remove other admins,
+       * but cannot change NFT or Collection ownership.
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
+       * * Collection owner
+       * * Collection admin
        * 
        * # Arguments
        * 
-       * * collection_id - ID of the Collection to add admin for.
-       * * new_admin - Address of new admin to add.
+       * * `collection_id`: ID of the Collection to add an admin for.
+       * * `new_admin`: Address of new admin to add.
        **/
       addCollectionAdmin: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, newAdmin: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
@@ -749,61 +753,76 @@
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
+       * * Collection owner
+       * * Collection admin
        * 
        * # Arguments
        * 
-       * * collection_id.
-       * * address.
+       * * `collection_id`: ID of the modified collection.
+       * * `address`: ID of the address to be added to the allowlist.
        **/
       addToAllowList: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, address: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
-       * Set, change, or remove approved address to transfer the ownership of the NFT.
+       * Allow a non-permissioned address to transfer or burn an item.
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
-       * * Current NFT owner
+       * * Collection owner
+       * * Collection admin
+       * * Current item owner
        * 
        * # Arguments
        * 
-       * * approved - Address that is approved to transfer this NFT or zero (if needed to remove approval).
-       * * collection_id.
-       * * item_id - ID of the item.
+       * * `spender`: Account to be approved to make specific transactions on non-owned tokens.
+       * * `collection_id`: ID of the collection the item belongs to.
+       * * `item_id`: ID of the item transactions on which are now approved.
+       * * `amount`: Number of pieces of the item approved for a transaction (maximum of 1 for NFTs).
+       * Set to 0 to revoke the approval.
        **/
       approve: AugmentedSubmittable<(spender: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array, collectionId: u32 | AnyNumber | Uint8Array, itemId: u32 | AnyNumber | Uint8Array, amount: u128 | AnyNumber | Uint8Array) => SubmittableExtrinsic<ApiType>, [PalletEvmAccountBasicCrossAccountIdRepr, u32, u32, u128]>;
       /**
-       * Destroy a concrete instance of NFT on behalf of the owner.
-       * See also: [`approve`]
+       * Destroy a token on behalf of the owner as a non-owner account.
+       * 
+       * See also: [`approve`][`Pallet::approve`].
+       * 
+       * After this method executes, one approval is removed from the total so that
+       * the approved address will not be able to transfer this item again from this owner.
        * 
        * # Permissions
        * 
-       * * Collection Owner.
-       * * Collection Admin.
-       * * Current NFT Owner.
+       * * Collection owner
+       * * Collection admin
+       * * Current token owner
+       * * Address approved by current item owner
        * 
        * # Arguments
        * 
-       * * collection_id - ID of the collection.
-       * * item_id - ID of NFT to burn.
-       * * from - The owner of the item from whom it is taken away.
+       * * `from`: The owner of the burning item.
+       * * `collection_id`: ID of the collection to which the item belongs.
+       * * `item_id`: ID of item to burn.
+       * * `value`: Number of pieces to burn.
+       * * Non-Fungible Mode: An NFT is indivisible, there is always 1 corresponding to an ID.
+       * * Fungible Mode: The desired number of pieces to burn.
+       * * Re-Fungible Mode: The desired number of pieces to burn.
        **/
       burnFrom: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, from: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array, itemId: u32 | AnyNumber | Uint8Array, value: u128 | AnyNumber | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, PalletEvmAccountBasicCrossAccountIdRepr, u32, u128]>;
       /**
-       * Destroy a concrete instance of NFT.
+       * Destroy an item.
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
-       * * Current NFT Owner
+       * * Collection owner
+       * * Collection admin
+       * * Current item owner
        * 
        * # Arguments
        * 
-       * * collection_id - ID of the collection.
-       * * item_id - ID of NFT to burn.
+       * * `collection_id`: ID of the collection to which the item belongs.
+       * * `item_id`: ID of item to burn.
+       * * `value`: Number of pieces of the item to destroy.
+       * * Non-Fungible Mode: An NFT is indivisible, there is always 1 corresponding to an ID.
+       * * Fungible Mode: The desired number of pieces to burn.
+       * * Re-Fungible Mode: The desired number of pieces to burn.
        **/
       burnItem: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, itemId: u32 | AnyNumber | Uint8Array, value: u128 | AnyNumber | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, u32, u128]>;
       /**
@@ -811,108 +830,126 @@
        * 
        * # Permissions
        * 
-       * * Collection Owner
+       * * Collection owner
        * 
        * # Arguments
        * 
-       * * collection_id.
-       * * new_owner.
+       * * `collection_id`: ID of the modified collection.
+       * * `new_owner`: ID of the account that will become the owner.
        **/
       changeCollectionOwner: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, newOwner: AccountId32 | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, AccountId32]>;
       /**
-       * Confirm own sponsorship of a collection.
+       * Confirm own sponsorship of a collection, becoming the sponsor.
        * 
+       * An invitation must be pending, see [`set_collection_sponsor`][`Pallet::set_collection_sponsor`].
+       * Sponsor can pay the fees of a transaction instead of the sender,
+       * but only within specified limits.
+       * 
        * # Permissions
        * 
        * * Sponsor-to-be
        * 
        * # Arguments
        * 
-       * * collection_id.
+       * * `collection_id`: ID of the collection with the pending sponsor.
        **/
       confirmSponsorship: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32]>;
       /**
-       * This method creates a Collection of NFTs. Each Token may have multiple properties encoded as an array of bytes of certain length. The initial owner of the collection is set to the address that signed the transaction and can be changed later.
+       * Create a collection of tokens.
+       * 
+       * Each Token may have multiple properties encoded as an array of bytes
+       * of certain length. The initial owner of the collection is set
+       * to the address that signed the transaction and can be changed later.
        * 
+       * Prefer the more advanced [`create_collection_ex`][`Pallet::create_collection_ex`] instead.
+       * 
        * # Permissions
        * 
-       * * Anyone.
+       * * Anyone - becomes the owner of the new collection.
        * 
        * # Arguments
        * 
-       * * collection_name: UTF-16 string with collection name (limit 64 characters), will be stored as zero-terminated.
-       * * collection_description - UTF-16 string with collection description (limit 256 characters), will be stored as zero-terminated.
-       * * token_prefix - UTF-8 string with token prefix.
-       * * mode - [CollectionMode] collection type and type dependent data.
+       * * `collection_name`: Wide-character string with collection name
+       * (limit [`MAX_COLLECTION_NAME_LENGTH`]).
+       * * `collection_description`: Wide-character string with collection description
+       * (limit [`MAX_COLLECTION_DESCRIPTION_LENGTH`]).
+       * * `token_prefix`: Byte string containing the token prefix to mark a collection
+       * to which a token belongs (limit [`MAX_TOKEN_PREFIX_LENGTH`]).
+       * * `mode`: Type of items stored in the collection and type dependent data.
        **/
       createCollection: AugmentedSubmittable<(collectionName: Vec<u16> | (u16 | AnyNumber | Uint8Array)[], collectionDescription: Vec<u16> | (u16 | AnyNumber | Uint8Array)[], tokenPrefix: Bytes | string | Uint8Array, mode: UpDataStructsCollectionMode | { NFT: any } | { Fungible: any } | { ReFungible: any } | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [Vec<u16>, Vec<u16>, Bytes, UpDataStructsCollectionMode]>;
       /**
        * Create a collection with explicit parameters.
-       * Prefer it to the deprecated [`created_collection`] method.
        * 
+       * Prefer it to the deprecated [`create_collection`][`Pallet::create_collection`] method.
+       * 
        * # Permissions
        * 
-       * * Anyone.
+       * * Anyone - becomes the owner of the new collection.
        * 
        * # Arguments
        * 
-       * * data: explicit create-collection data.
+       * * `data`: Explicit data of a collection used for its creation.
        **/
       createCollectionEx: AugmentedSubmittable<(data: UpDataStructsCreateCollectionData | { mode?: any; access?: any; name?: any; description?: any; tokenPrefix?: any; pendingSponsor?: any; limits?: any; permissions?: any; tokenPropertyPermissions?: any; properties?: any } | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [UpDataStructsCreateCollectionData]>;
       /**
-       * Create a concrete instance of NFT Collection created with CreateCollection method.
+       * Mint an item within a collection.
+       * 
+       * A collection must exist first, see [`create_collection_ex`][`Pallet::create_collection_ex`].
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
+       * * Collection owner
+       * * Collection admin
        * * Anyone if
        * * Allow List is enabled, and
        * * Address is added to allow list, and
-       * * MintPermission is enabled (see SetMintPermission method)
+       * * MintPermission is enabled (see [`set_collection_permissions`][`Pallet::set_collection_permissions`])
        * 
        * # Arguments
        * 
-       * * collection_id - ID of the collection.
-       * * owner - Address, initial owner of the NFT.
-       * * data - Token data to store on chain.
+       * * `collection_id`: ID of the collection to which an item would belong.
+       * * `owner`: Address of the initial owner of the item.
+       * * `data`: Token data describing the item to store on chain.
        **/
       createItem: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, owner: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array, data: UpDataStructsCreateItemData | { NFT: any } | { Fungible: any } | { ReFungible: any } | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, PalletEvmAccountBasicCrossAccountIdRepr, UpDataStructsCreateItemData]>;
       /**
-       * Create multiple items in a collection created with CreateCollection method.
+       * Create multiple items within a collection.
+       * 
+       * A collection must exist first, see [`create_collection_ex`][`Pallet::create_collection_ex`].
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
+       * * Collection owner
+       * * Collection admin
        * * Anyone if
        * * Allow List is enabled, and
-       * * Address is added to allow list, and
-       * * MintPermission is enabled (see SetMintPermission method)
+       * * Address is added to the allow list, and
+       * * MintPermission is enabled (see [`set_collection_permissions`][`Pallet::set_collection_permissions`])
        * 
        * # Arguments
        * 
-       * * collection_id - ID of the collection.
-       * * owner - Address, initial owner of the NFT.
-       * * items_data - Array items properties. Each property is an array of bytes itself, see [`create_item`].
+       * * `collection_id`: ID of the collection to which the tokens would belong.
+       * * `owner`: Address of the initial owner of the tokens.
+       * * `items_data`: Vector of data describing each item to be created.
        **/
       createMultipleItems: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, owner: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array, itemsData: Vec<UpDataStructsCreateItemData> | (UpDataStructsCreateItemData | { NFT: any } | { Fungible: any } | { ReFungible: any } | string | Uint8Array)[]) => SubmittableExtrinsic<ApiType>, [u32, PalletEvmAccountBasicCrossAccountIdRepr, Vec<UpDataStructsCreateItemData>]>;
       /**
-       * Create multiple items inside a collection with explicitly specified initial parameters.
+       * Create multiple items within a collection with explicitly specified initial parameters.
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
+       * * Collection owner
+       * * Collection admin
        * * Anyone if
        * * Allow List is enabled, and
        * * Address is added to allow list, and
-       * * MintPermission is enabled (see SetMintPermission method)
+       * * MintPermission is enabled (see [`set_collection_permissions`][`Pallet::set_collection_permissions`])
        * 
        * # Arguments
        * 
-       * * collection_id - ID of the collection.
-       * * data - Explicit item creation data.
+       * * `collection_id`: ID of the collection to which the tokens would belong.
+       * * `data`: Explicit item creation data.
        **/
       createMultipleItemsEx: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, data: UpDataStructsCreateItemExData | { NFT: any } | { Fungible: any } | { RefungibleMultipleItems: any } | { RefungibleMultipleOwners: any } | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, UpDataStructsCreateItemExData]>;
       /**
@@ -925,63 +962,68 @@
        * 
        * # Arguments
        * 
-       * * collection_id.
-       * * property_keys - Vector of keys of the properties to be deleted.
+       * * `collection_id`: ID of the modified collection.
+       * * `property_keys`: Vector of keys of the properties to be deleted.
+       * Keys support Latin letters, `-`, `_`, and `.` as symbols.
        **/
       deleteCollectionProperties: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, propertyKeys: Vec<Bytes> | (Bytes | string | Uint8Array)[]) => SubmittableExtrinsic<ApiType>, [u32, Vec<Bytes>]>;
       /**
-       * Delete specified token properties.
+       * Delete specified token properties. Currently properties only work with NFTs.
        * 
        * # Permissions
        * 
        * * Depends on collection's token property permissions and specified property mutability:
-       * * Collection Owner
-       * * Collection Admin
-       * * Token Owner
+       * * Collection owner
+       * * Collection admin
+       * * Token owner
        * 
        * # Arguments
        * 
-       * * collection_id.
-       * * token_id.
-       * * property_keys - Vector of keys of the properties to be deleted.
+       * * `collection_id`: ID of the collection to which the token belongs.
+       * * `token_id`: ID of the modified token.
+       * * `property_keys`: Vector of keys of the properties to be deleted.
+       * Keys support Latin letters, `-`, `_`, and `.` as symbols.
        **/
       deleteTokenProperties: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, propertyKeys: Vec<Bytes> | (Bytes | string | Uint8Array)[]) => SubmittableExtrinsic<ApiType>, [u32, u32, Vec<Bytes>]>;
       /**
-       * Destroy the collection if no tokens exist within.
+       * Destroy a collection if no tokens exist within.
        * 
        * # Permissions
        * 
-       * * Collection Owner
+       * * Collection owner
        * 
        * # Arguments
        * 
-       * * collection_id - collection to destroy.
+       * * `collection_id`: Collection to destroy.
        **/
       destroyCollection: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32]>;
       /**
-       * Remove admin address of the Collection. An admin address can remove itself. List of admins may become empty, in which case only Collection Owner will be able to add an Admin.
+       * Remove admin of a collection.
+       * 
+       * An admin address can remove itself. List of admins may become empty,
+       * in which case only Collection Owner will be able to add an Admin.
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
+       * * Collection owner
+       * * Collection admin
        * 
        * # Arguments
        * 
-       * * collection_id - ID of the Collection to remove admin for.
-       * * account_id - Address of admin to remove.
+       * * `collection_id`: ID of the collection to remove the admin for.
+       * * `account_id`: Address of the admin to remove.
        **/
       removeCollectionAdmin: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, accountId: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
-       * Switch back to pay-per-own-transaction model.
+       * Remove a collection's a sponsor, making everyone pay for their own transactions.
        * 
        * # Permissions
        * 
-       * * Collection Owner
+       * * Collection owner
        * 
        * # Arguments
        * 
-       * * collection_id.
+       * * `collection_id`: ID of the collection with the sponsor to remove.
        **/
       removeCollectionSponsor: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32]>;
       /**
@@ -989,27 +1031,27 @@
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
+       * * Collection owner
+       * * Collection admin
        * 
        * # Arguments
        * 
-       * * collection_id.
-       * * address.
+       * * `collection_id`: ID of the modified collection.
+       * * `address`: ID of the address to be removed from the allowlist.
        **/
       removeFromAllowList: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, address: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, PalletEvmAccountBasicCrossAccountIdRepr]>;
       /**
-       * Re-partition a refungible token, while owning all of its parts.
+       * Re-partition a refungible token, while owning all of its parts/pieces.
        * 
        * # Permissions
        * 
-       * * Token Owner (must own every part)
+       * * Token owner (must own every part)
        * 
        * # Arguments
        * 
-       * * collection_id.
-       * * token_id - ID of the RFT.
-       * * amount - New number of parts into which the token shall be partitioned.
+       * * `collection_id`: ID of the collection the RFT belongs to.
+       * * `token_id`: ID of the RFT.
+       * * `amount`: New number of parts/pieces into which the token shall be partitioned.
        **/
       repartition: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, amount: u128 | AnyNumber | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, u32, u128]>;
       /**
@@ -1017,13 +1059,14 @@
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
+       * * Collection owner
+       * * Collection admin
        * 
        * # Arguments
        * 
-       * * collection_id.
-       * * new_limit - New limits of the collection. They will overwrite the current ones.
+       * * `collection_id`: ID of the modified collection.
+       * * `new_limit`: New limits of the collection. Fields that are not set (None)
+       * will not overwrite the old ones.
        **/
       setCollectionLimits: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, newLimit: UpDataStructsCollectionLimits | { accountTokenOwnershipLimit?: any; sponsoredDataSize?: any; sponsoredDataRateLimit?: any; tokenLimit?: any; sponsorTransferTimeout?: any; sponsorApproveTimeout?: any; ownerCanTransfer?: any; ownerCanDestroy?: any; transfersEnabled?: any } | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, UpDataStructsCollectionLimits]>;
       /**
@@ -1031,13 +1074,14 @@
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
+       * * Collection owner
+       * * Collection admin
        * 
        * # Arguments
        * 
-       * * collection_id.
-       * * new_permission - New permissions of the collection. They will overwrite the current ones.
+       * * `collection_id`: ID of the modified collection.
+       * * `new_permission`: New permissions of the collection. Fields that are not set (None)
+       * will not overwrite the old ones.
        **/
       setCollectionPermissions: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, newPermission: UpDataStructsCollectionPermissions | { access?: any; mintMode?: any; nesting?: any } | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, UpDataStructsCollectionPermissions]>;
       /**
@@ -1045,71 +1089,82 @@
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
+       * * Collection owner
+       * * Collection admin
        * 
        * # Arguments
        * 
-       * * collection_id.
-       * * properties - Vector of key-value pairs stored as the collection's metadata. Keys support Latin letters, `-`, `_`, and `.` as symbols.
+       * * `collection_id`: ID of the modified collection.
+       * * `properties`: Vector of key-value pairs stored as the collection's metadata.
+       * Keys support Latin letters, `-`, `_`, and `.` as symbols.
        **/
       setCollectionProperties: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, properties: Vec<UpDataStructsProperty> | (UpDataStructsProperty | { key?: any; value?: any } | string | Uint8Array)[]) => SubmittableExtrinsic<ApiType>, [u32, Vec<UpDataStructsProperty>]>;
       /**
-       * Set (invite) a new collection sponsor. If successful, confirmation from the sponsor-to-be will be pending.
+       * Set (invite) a new collection sponsor.
+       * 
+       * If successful, confirmation from the sponsor-to-be will be pending.
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
+       * * Collection owner
+       * * Collection admin
        * 
        * # Arguments
        * 
-       * * collection_id.
-       * * new_sponsor.
+       * * `collection_id`: ID of the modified collection.
+       * * `new_sponsor`: ID of the account of the sponsor-to-be.
        **/
       setCollectionSponsor: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, newSponsor: AccountId32 | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, AccountId32]>;
       /**
        * Add or change token properties according to collection's permissions.
+       * Currently properties only work with NFTs.
        * 
        * # Permissions
        * 
        * * Depends on collection's token property permissions and specified property mutability:
-       * * Collection Owner
-       * * Collection Admin
-       * * Token Owner
+       * * Collection owner
+       * * Collection admin
+       * * Token owner
+       * 
+       * See [`set_token_property_permissions`][`Pallet::set_token_property_permissions`].
        * 
        * # Arguments
        * 
-       * * collection_id.
-       * * token_id.
-       * * properties - Vector of key-value pairs stored as the token's metadata. Keys support Latin letters, `-`, `_`, and `.` as symbols.
+       * * `collection_id: ID of the collection to which the token belongs.
+       * * `token_id`: ID of the modified token.
+       * * `properties`: Vector of key-value pairs stored as the token's metadata.
+       * Keys support Latin letters, `-`, `_`, and `.` as symbols.
        **/
       setTokenProperties: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, properties: Vec<UpDataStructsProperty> | (UpDataStructsProperty | { key?: any; value?: any } | string | Uint8Array)[]) => SubmittableExtrinsic<ApiType>, [u32, u32, Vec<UpDataStructsProperty>]>;
       /**
        * Add or change token property permissions of a collection.
        * 
+       * Without a permission for a particular key, a property with that key
+       * cannot be created in a token.
+       * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
+       * * Collection owner
+       * * Collection admin
        * 
        * # Arguments
        * 
-       * * collection_id.
-       * * property_permissions - Vector of permissions for property keys. Keys support Latin letters, `-`, `_`, and `.` as symbols.
+       * * `collection_id`: ID of the modified collection.
+       * * `property_permissions`: Vector of permissions for property keys.
+       * Keys support Latin letters, `-`, `_`, and `.` as symbols.
        **/
       setTokenPropertyPermissions: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, propertyPermissions: Vec<UpDataStructsPropertyKeyPermission> | (UpDataStructsPropertyKeyPermission | { key?: any; permission?: any } | string | Uint8Array)[]) => SubmittableExtrinsic<ApiType>, [u32, Vec<UpDataStructsPropertyKeyPermission>]>;
       /**
-       * Set transfers_enabled value for particular collection.
+       * Completely allow or disallow transfers for a particular collection.
        * 
        * # Permissions
        * 
-       * * Collection Owner
+       * * Collection owner
        * 
        * # Arguments
        * 
-       * * collection_id - ID of the collection.
-       * * value - New flag value.
+       * * `collection_id`: ID of the collection.
+       * * `value`: New value of the flag, are transfers allowed?
        **/
       setTransfersEnabledFlag: AugmentedSubmittable<(collectionId: u32 | AnyNumber | Uint8Array, value: bool | boolean | Uint8Array) => SubmittableExtrinsic<ApiType>, [u32, bool]>;
       /**
@@ -1117,44 +1172,50 @@
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
-       * * Current NFT owner
+       * * Collection owner
+       * * Collection admin
+       * * Current token owner
        * 
        * # Arguments
        * 
-       * * recipient - Address of token recipient.
-       * 
-       * * collection_id.
-       * 
-       * * item_id - ID of the item
+       * * `recipient`: Address of token recipient.
+       * * `collection_id`: ID of the collection the item belongs to.
+       * * `item_id`: ID of the item.
        * * Non-Fungible Mode: Required.
        * * Fungible Mode: Ignored.
        * * Re-Fungible Mode: Required.
        * 
-       * * value - Amount to transfer.
-       * * Non-Fungible Mode: Ignored
-       * * Fungible Mode: Must specify transferred amount
-       * * Re-Fungible Mode: Must specify transferred portion (between 0 and 1)
+       * * `value`: Amount to transfer.
+       * * Non-Fungible Mode: An NFT is indivisible, there is always 1 corresponding to an ID.
+       * * Fungible Mode: The desired number of pieces to transfer.
+       * * Re-Fungible Mode: The desired number of pieces to transfer.
        **/
       transfer: AugmentedSubmittable<(recipient: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array, collectionId: u32 | AnyNumber | Uint8Array, itemId: u32 | AnyNumber | Uint8Array, value: u128 | AnyNumber | Uint8Array) => SubmittableExtrinsic<ApiType>, [PalletEvmAccountBasicCrossAccountIdRepr, u32, u32, u128]>;
       /**
-       * Change ownership of a NFT on behalf of the owner. See Approve method for additional information. After this method executes, the approval is removed so that the approved address will not be able to transfer this NFT again from this owner.
+       * Change ownership of an item on behalf of the owner as a non-owner account.
+       * 
+       * See the [`approve`][`Pallet::approve`] method for additional information.
+       * 
+       * After this method executes, one approval is removed from the total so that
+       * the approved address will not be able to transfer this item again from this owner.
        * 
        * # Permissions
        * 
-       * * Collection Owner
-       * * Collection Admin
-       * * Current NFT owner
-       * * Address approved by current NFT owner
+       * * Collection owner
+       * * Collection admin
+       * * Current item owner
+       * * Address approved by current item owner
        * 
        * # Arguments
        * 
-       * * from - Address that currently owns the token.
-       * * recipient - Address of the new token-owner-to-be.
-       * * collection_id.
-       * * item_id - ID of the item to be transferred.
-       * * value - Amount to transfer.
+       * * `from`: Address that currently owns the token.
+       * * `recipient`: Address of the new token-owner-to-be.
+       * * `collection_id`: ID of the collection the item.
+       * * `item_id`: ID of the item to be transferred.
+       * * `value`: Amount to transfer.
+       * * Non-Fungible Mode: An NFT is indivisible, there is always 1 corresponding to an ID.
+       * * Fungible Mode: The desired number of pieces to transfer.
+       * * Re-Fungible Mode: The desired number of pieces to transfer.
        **/
       transferFrom: AugmentedSubmittable<(from: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array, recipient: PalletEvmAccountBasicCrossAccountIdRepr | { Substrate: any } | { Ethereum: any } | string | Uint8Array, collectionId: u32 | AnyNumber | Uint8Array, itemId: u32 | AnyNumber | Uint8Array, value: u128 | AnyNumber | Uint8Array) => SubmittableExtrinsic<ApiType>, [PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmAccountBasicCrossAccountIdRepr, u32, u32, u128]>;
       /**
modifiedtests/src/interfaces/default/types.tsdiffbeforeafterboth
--- a/tests/src/interfaces/default/types.ts
+++ b/tests/src/interfaces/default/types.ts
@@ -2461,12 +2461,14 @@
 export interface UpDataStructsCreateReFungibleData extends Struct {
   readonly constData: Bytes;
   readonly pieces: u128;
+  readonly properties: Vec<UpDataStructsProperty>;
 }
 
 /** @name UpDataStructsCreateRefungibleExData */
 export interface UpDataStructsCreateRefungibleExData extends Struct {
   readonly constData: Bytes;
   readonly users: BTreeMap<PalletEvmAccountBasicCrossAccountIdRepr, u128>;
+  readonly properties: Vec<UpDataStructsProperty>;
 }
 
 /** @name UpDataStructsNestingPermissions */
modifiedtests/src/interfaces/lookup.tsdiffbeforeafterboth
--- a/tests/src/interfaces/lookup.ts
+++ b/tests/src/interfaces/lookup.ts
@@ -1502,7 +1502,8 @@
    **/
   UpDataStructsCreateReFungibleData: {
     constData: 'Bytes',
-    pieces: 'u128'
+    pieces: 'u128',
+    properties: 'Vec<UpDataStructsProperty>'
   },
   /**
    * Lookup193: up_data_structs::CreateItemExData<pallet_evm::account::BasicCrossAccountIdRepr<sp_core::crypto::AccountId32>>
@@ -1527,7 +1528,8 @@
    **/
   UpDataStructsCreateRefungibleExData: {
     constData: 'Bytes',
-    users: 'BTreeMap<PalletEvmAccountBasicCrossAccountIdRepr, u128>'
+    users: 'BTreeMap<PalletEvmAccountBasicCrossAccountIdRepr, u128>',
+    properties: 'Vec<UpDataStructsProperty>'
   },
   /**
    * Lookup204: pallet_unique_scheduler::pallet::Call<T>
modifiedtests/src/interfaces/types-lookup.tsdiffbeforeafterboth
--- a/tests/src/interfaces/types-lookup.ts
+++ b/tests/src/interfaces/types-lookup.ts
@@ -1629,6 +1629,7 @@
   export interface UpDataStructsCreateReFungibleData extends Struct {
     readonly constData: Bytes;
     readonly pieces: u128;
+    readonly properties: Vec<UpDataStructsProperty>;
   }
 
   /** @name UpDataStructsCreateItemExData (193) */
@@ -1654,6 +1655,7 @@
   export interface UpDataStructsCreateRefungibleExData extends Struct {
     readonly constData: Bytes;
     readonly users: BTreeMap<PalletEvmAccountBasicCrossAccountIdRepr, u128>;
+    readonly properties: Vec<UpDataStructsProperty>;
   }
 
   /** @name PalletUniqueSchedulerCall (204) */
modifiedtests/src/interfaces/unique/definitions.tsdiffbeforeafterboth
--- a/tests/src/interfaces/unique/definitions.ts
+++ b/tests/src/interfaces/unique/definitions.ts
@@ -63,6 +63,11 @@
       [collectionParam, tokenParam], 
       `Option<${CROSS_ACCOUNT_ID_TYPE}>`,
     ),
+    tokenOwners: fun(
+      'Returns 10 tokens owners in no particular order', 
+      [collectionParam, tokenParam], 
+      `Vec<${CROSS_ACCOUNT_ID_TYPE}>`
+    ),
     tokenChildren: fun(
       'Get tokens nested directly into the token', 
       [collectionParam, tokenParam], 
@@ -85,6 +90,17 @@
       'Vec<UpDataStructsPropertyKeyPermission>',
     ),
 
+    constMetadata: fun(
+      'Get token constant metadata', 
+      [collectionParam, tokenParam], 
+      'Vec<u8>',
+    ),
+    variableMetadata: fun(
+      'Get token variable metadata', 
+      [collectionParam, tokenParam], 
+      'Vec<u8>',
+    ),
+
     tokenData: fun(
       'Get token data, including properties, optionally limited to the provided keys, and total pieces for an RFT',
       [collectionParam, tokenParam, propertyKeysParam],
@@ -128,7 +144,11 @@
       'bool',
     ),
 
-    lastTokenId: fun('Get the last token ID created in a collection', [collectionParam], 'u32'),
+    lastTokenId: fun(
+      'Get the last token ID created in a collection', 
+      [collectionParam], 
+      'u32',
+    ),
     collectionById: fun(
       'Get a collection by the specified ID', 
       [collectionParam],
modifiedtests/src/nesting/properties.test.tsdiffbeforeafterboth
--- a/tests/src/nesting/properties.test.ts
+++ b/tests/src/nesting/properties.test.ts
@@ -2,6 +2,7 @@
 import usingApi, {executeTransaction} from '../substrate/substrate-api';
 import {
   addCollectionAdminExpectSuccess,
+  CollectionMode,
   createCollectionExpectSuccess,
   setCollectionPermissionsExpectSuccess,
   createItemExpectSuccess,
@@ -23,9 +24,9 @@
     });
   });
 
-  it('Makes sure collectionById supplies required fields', async () => {
+  async function testMakeSureSuppliesRequired(mode: CollectionMode) {
     await usingApi(async api => {
-      const collectionId = await createCollectionExpectSuccess();
+      const collectionId = await createCollectionExpectSuccess({mode: mode});
 
       const collectionOption = await api.rpc.unique.collectionById(collectionId);
       expect(collectionOption.isSome).to.be.true;
@@ -57,7 +58,15 @@
       expect(collection.tokenPropertyPermissions.toHuman()).to.be.deep.equal(propertyPermissions);
       expect(collection.properties.toHuman()).to.be.deep.equal(collectionProperties);
     });
+  }
+
+  it('Makes sure collectionById supplies required fields for NFT', async () => {
+    await testMakeSureSuppliesRequired({type: 'NFT'});
   });
+
+  it('Makes sure collectionById supplies required fields for ReFungible', async () => {
+    await testMakeSureSuppliesRequired({type: 'ReFungible'});
+  });
 });
 
 // ---------- COLLECTION PROPERTIES
@@ -79,9 +88,10 @@
     });
   });
 
-  it('Sets properties for a collection', async () => {
+
+  async function testSetsPropertiesForCollection(mode: string) {
     await usingApi(async api => {
-      const events = await executeTransaction(api, bob, api.tx.unique.createCollectionEx({mode: 'NFT'}));
+      const events = await executeTransaction(api, bob, api.tx.unique.createCollectionEx({mode: mode}));
       const {collectionId} = getCreateCollectionResult(events);
 
       // As owner
@@ -106,48 +116,54 @@
         {key: 'black_hole', value: ''},
       ]);
     });
+  }
+  it('Sets properties for a NFT collection', async () => {
+    await testSetsPropertiesForCollection('NFT');
   });
+  it('Sets properties for a ReFungible collection', async () => {
+    await testSetsPropertiesForCollection('ReFungible');
+  });
 
-  it('Check valid names for collection properties keys', async () => {
+  async function testCheckValidNames(mode: string) {
     await usingApi(async api => {
-      const events = await executeTransaction(api, bob, api.tx.unique.createCollectionEx({mode: 'NFT'}));
+      const events = await executeTransaction(api, bob, api.tx.unique.createCollectionEx({mode: mode}));
       const {collectionId} = getCreateCollectionResult(events);
-
+  
       // alpha symbols
       await expect(executeTransaction(
         api, 
         bob, 
         api.tx.unique.setCollectionProperties(collectionId, [{key: 'alpha'}]), 
       )).to.not.be.rejected;
-
+  
       // numeric symbols
       await expect(executeTransaction(
         api, 
         bob, 
         api.tx.unique.setCollectionProperties(collectionId, [{key: '123'}]), 
       )).to.not.be.rejected;
-
+  
       // underscore symbol
       await expect(executeTransaction(
         api, 
         bob, 
         api.tx.unique.setCollectionProperties(collectionId, [{key: 'black_hole'}]), 
       )).to.not.be.rejected;
-
+  
       // dash symbol
       await expect(executeTransaction(
         api, 
         bob, 
         api.tx.unique.setCollectionProperties(collectionId, [{key: 'semi-automatic'}]), 
       )).to.not.be.rejected;
-
+  
       // underscore symbol
       await expect(executeTransaction(
         api, 
         bob, 
         api.tx.unique.setCollectionProperties(collectionId, [{key: 'build.rs'}]), 
       )).to.not.be.rejected;
-
+  
       const propertyKeys = ['alpha', '123', 'black_hole', 'semi-automatic', 'build.rs'];
       const properties = (await api.rpc.unique.collectionProperties(collectionId, propertyKeys)).toHuman();
       expect(properties).to.be.deep.equal([
@@ -158,54 +174,72 @@
         {key: 'build.rs', value: ''},
       ]);
     });
+  }
+  it('Check valid names for NFT collection properties keys', async () => {
+    await testCheckValidNames('NFT');
+  });
+  it('Check valid names for ReFungible collection properties keys', async () => {
+    await testCheckValidNames('ReFungible');
   });
 
-  it('Changes properties of a collection', async () => {
+  async function testChangesProperties(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
-
+      const collection = await createCollectionExpectSuccess({mode: mode});
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setCollectionProperties(collection, [{key: 'electron', value: 'come bond'}, {key: 'black_hole'}]), 
       )).to.not.be.rejected;
-
+  
       // Mutate the properties
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setCollectionProperties(collection, [{key: 'electron', value: 'bonded'}, {key: 'black_hole', value: 'LIGO'}]), 
       )).to.not.be.rejected;
-
+  
       const properties = (await api.rpc.unique.collectionProperties(collection, ['electron', 'black_hole'])).toHuman();
       expect(properties).to.be.deep.equal([
         {key: 'electron', value: 'bonded'},
         {key: 'black_hole', value: 'LIGO'},
       ]);
     });
+  }
+  it('Changes properties of a NFT collection', async () => {
+    await testChangesProperties({type: 'NFT'});
+  });
+  it('Changes properties of a ReFungible collection', async () => {
+    await testChangesProperties({type: 'ReFungible'});
   });
 
-  it('Deletes properties of a collection', async () => {
+  async function testDeleteProperties(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
-
+      const collection = await createCollectionExpectSuccess({mode: mode});
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setCollectionProperties(collection, [{key: 'electron', value: 'come bond'}, {key: 'black_hole', value: 'LIGO'}]), 
       )).to.not.be.rejected;
-
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.deleteCollectionProperties(collection, ['electron']), 
       )).to.not.be.rejected;
-
+  
       const properties = (await api.rpc.unique.collectionProperties(collection, ['electron', 'black_hole'])).toHuman();
       expect(properties).to.be.deep.equal([
         {key: 'black_hole', value: 'LIGO'},
       ]);
-    });
+    });  
+  }
+  it('Deletes properties of a NFT collection', async () => {
+    await testDeleteProperties({type: 'NFT'});
+  });
+  it('Deletes properties of a ReFungible collection', async () => {
+    await testDeleteProperties({type: 'ReFungible'});
   });
 });
 
@@ -217,10 +251,10 @@
     });
   });
   
-  it('Fails to set properties in a collection if not its onwer/administrator', async () => {
+  async function testFailsSetPropertiesIfNotOwnerOrAdmin(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
-
+      const collection = await createCollectionExpectSuccess({mode: mode});
+  
       await expect(executeTransaction(
         api, 
         bob, 
@@ -230,14 +264,20 @@
       const properties = (await api.query.common.collectionProperties(collection)).toJSON();
       expect(properties.map).to.be.empty;
       expect(properties.consumedSpace).to.equal(0);
-    });
+    });  
+  }
+  it('Fails to set properties in a NFT collection if not its onwer/administrator', async () => {
+    await testFailsSetPropertiesIfNotOwnerOrAdmin({type: 'NFT'});
   });
+  it('Fails to set properties in a ReFungible collection if not its onwer/administrator', async () => {
+    await testFailsSetPropertiesIfNotOwnerOrAdmin({type: 'ReFungible'});
+  });
   
-  it('Fails to set properties that exceed the limits', async () => {
+  async function testFailsSetPropertiesThatExeedLimits(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
+      const collection = await createCollectionExpectSuccess({mode: mode});
       const spaceLimit = (await api.query.common.collectionProperties(collection)).toJSON().spaceLimit as number; 
-
+  
       // Mute the general tx parsing error, too many bytes to process
       {
         console.error = () => {};
@@ -247,10 +287,10 @@
           api.tx.unique.setCollectionProperties(collection, [{key: 'electron', value: 'low high '.repeat(Math.ceil(spaceLimit! / 9))}]), 
         )).to.be.rejected;
       }
-
+  
       let properties = (await api.rpc.unique.collectionProperties(collection, ['electron'])).toJSON();
       expect(properties).to.be.empty;
-
+  
       await expect(executeTransaction(
         api, 
         alice, 
@@ -259,16 +299,22 @@
           {key: 'black_hole', value: '0'.repeat(Math.ceil(spaceLimit! / 2))}, 
         ]), 
       )).to.be.rejectedWith(/common\.NoSpaceForProperty/);
-
+  
       properties = (await api.rpc.unique.collectionProperties(collection, ['electron', 'black hole'])).toJSON();
       expect(properties).to.be.empty;
-    });
+    });  
+  }
+  it('Fails to set properties that exceed the limits (NFT)', async () => {
+    await testFailsSetPropertiesThatExeedLimits({type: 'NFT'});
+  });
+  it('Fails to set properties that exceed the limits (ReFungible)', async () => {
+    await testFailsSetPropertiesThatExeedLimits({type: 'ReFungible'});
   });
   
-  it('Fails to set more properties than it is allowed', async () => {
+  async function testFailsSetMorePropertiesThanAllowed(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
-
+      const collection = await createCollectionExpectSuccess({mode: mode});
+  
       const propertiesToBeSet = [];
       for (let i = 0; i < 65; i++) {
         propertiesToBeSet.push({
@@ -276,29 +322,35 @@
           value: Math.random() > 0.5 ? 'high' : 'low',
         });
       }
-
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setCollectionProperties(collection, propertiesToBeSet), 
       )).to.be.rejectedWith(/common\.PropertyLimitReached/);
-
+  
       const properties = (await api.query.common.collectionProperties(collection)).toJSON();
       expect(properties.map).to.be.empty;
       expect(properties.consumedSpace).to.equal(0);
-    });
+    });  
+  }
+  it('Fails to set more properties than it is allowed (NFT)', async () => {
+    await testFailsSetMorePropertiesThanAllowed({type: 'NFT'});
   });
-
-  it('Fails to set properties with invalid names', async () => {
+  it('Fails to set more properties than it is allowed (ReFungible)', async () => {
+    await testFailsSetMorePropertiesThanAllowed({type: 'ReFungible'});
+  });
+  
+  async function testFailsSetPropertiesWithInvalidNames(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
-
+      const collection = await createCollectionExpectSuccess({mode: mode});
+  
       const invalidProperties = [
         [{key: 'electron', value: 'negative'}, {key: 'string theory', value: 'understandable'}],
         [{key: 'Mr/Sandman', value: 'Bring me a gene'}],
         [{key: 'déjà vu', value: 'hmm...'}],
       ];
-
+  
       for (let i = 0; i < invalidProperties.length; i++) {
         await expect(executeTransaction(
           api, 
@@ -306,13 +358,13 @@
           api.tx.unique.setCollectionProperties(collection, invalidProperties[i]), 
         ), `on rejecting the new badly-named property #${i}`).to.be.rejectedWith(/common\.InvalidCharacterInPropertyKey/);
       }
-
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setCollectionProperties(collection, [{key: '', value: 'nothing must not exist'}]), 
       ), 'on rejecting an unnamed property').to.be.rejectedWith(/common\.EmptyPropertyKey/);
-
+  
       await expect(executeTransaction(
         api, 
         alice, 
@@ -320,14 +372,14 @@
           {key: 'CRISPR-Cas9', value: 'rewriting nature!'},
         ]), 
       ), 'on setting the correctly-but-still-badly-named property').to.not.be.rejected;
-
+  
       const keys = invalidProperties.flatMap(propertySet => propertySet.map(property => property.key)).concat('CRISPR-Cas9').concat('');
-
+  
       const properties = (await api.rpc.unique.collectionProperties(collection, keys)).toHuman();
       expect(properties).to.be.deep.equal([
         {key: 'CRISPR-Cas9', value: 'rewriting nature!'},
       ]);
-
+  
       for (let i = 0; i < invalidProperties.length; i++) {
         await expect(executeTransaction(
           api, 
@@ -336,7 +388,13 @@
         ), `on trying to delete the non-existent badly-named property #${i}`).to.be.rejectedWith(/common\.InvalidCharacterInPropertyKey/);
       }
     });
+  }
+  it('Fails to set properties with invalid names (NFT)', async () => {
+    await testFailsSetPropertiesWithInvalidNames({type: 'NFT'});
   });
+  it('Fails to set properties with invalid names (ReFungible)', async () => {
+    await testFailsSetPropertiesWithInvalidNames({type: 'ReFungible'});
+  });
 });
 
 // ---------- ACCESS RIGHTS
@@ -357,54 +415,66 @@
     });
   });
   
-  it('Sets access rights to properties of a collection', async () => {
+  async function testSetsAccessRightsToProperties(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
-
+      const collection = await createCollectionExpectSuccess({mode: mode});
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setTokenPropertyPermissions(collection, [{key: 'skullduggery', permission: {mutable: true}}]), 
       )).to.not.be.rejected;
-
+  
       await addCollectionAdminExpectSuccess(alice, collection, bob.address);
-
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setTokenPropertyPermissions(collection, [{key: 'mindgame', permission: {collectionAdmin: true, tokenOwner: false}}]), 
       )).to.not.be.rejected;
-
+  
       const propertyRights = (await api.rpc.unique.propertyPermissions(collection, ['skullduggery', 'mindgame'])).toHuman();
       expect(propertyRights).to.be.deep.equal([
         {key: 'skullduggery', permission: {'mutable': true, 'collectionAdmin': false, 'tokenOwner': false}},
         {key: 'mindgame', permission: {'mutable': false, 'collectionAdmin': true, 'tokenOwner': false}},
       ]);
-    });
+    });  
+  }
+  it('Sets access rights to properties of a collection (NFT)', async () => {
+    await testSetsAccessRightsToProperties({type: 'NFT'});
   });
+  it('Sets access rights to properties of a collection (ReFungible)', async () => {
+    await testSetsAccessRightsToProperties({type: 'ReFungible'});
+  });
   
-  it('Changes access rights to properties of a collection', async () => {
+  async function testChangesAccessRightsToProperty(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
-
+      const collection = await createCollectionExpectSuccess({mode: mode});
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setTokenPropertyPermissions(collection, [{key: 'skullduggery', permission: {mutable: true, collectionAdmin: true}}]), 
       )).to.not.be.rejected;
-
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setTokenPropertyPermissions(collection, [{key: 'skullduggery', permission: {mutable: false, tokenOwner: true}}]), 
       )).to.not.be.rejected;
-
+  
       const propertyRights = (await api.rpc.unique.propertyPermissions(collection, ['skullduggery'])).toHuman();
       expect(propertyRights).to.be.deep.equal([
         {key: 'skullduggery', permission: {'mutable': false, 'collectionAdmin': false, 'tokenOwner': true}},
       ]);
     });
+  }
+  it('Changes access rights to properties of a NFT collection', async () => {
+    await testChangesAccessRightsToProperty({type: 'NFT'});
   });
+  it('Changes access rights to properties of a ReFungible collection', async () => {
+    await testChangesAccessRightsToProperty({type: 'ReFungible'});
+  });
 });
 
 describe('Negative Integration Test: Access Rights to Token Properties', () => {
@@ -415,25 +485,31 @@
     });
   });
 
-  it('Prevents from setting access rights to properties of a collection if not an onwer/admin', async () => {
+  async function testPreventsFromSettingAccessRightsNotAdminOrOwner(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
-
+      const collection = await createCollectionExpectSuccess({mode: mode});
+  
       await expect(executeTransaction(
         api, 
         bob, 
         api.tx.unique.setTokenPropertyPermissions(collection, [{key: 'skullduggery', permission: {mutable: true, tokenOwner: true}}]), 
       )).to.be.rejectedWith(/common\.NoPermission/);
-
+  
       const propertyRights = (await api.rpc.unique.propertyPermissions(collection, ['skullduggery'])).toJSON();
       expect(propertyRights).to.be.empty;
     });
+  }
+  it('Prevents from setting access rights to properties of a NFT collection if not an onwer/admin', async () => {
+    await testPreventsFromSettingAccessRightsNotAdminOrOwner({type: 'NFT'});
   });
+  it('Prevents from setting access rights to properties of a ReFungible collection if not an onwer/admin', async () => {
+    await testPreventsFromSettingAccessRightsNotAdminOrOwner({type: 'ReFungible'});
+  });
 
-  it('Prevents from adding too many possible properties', async () => {
+  async function testPreventFromAddingTooManyPossibleProperties(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
-
+      const collection = await createCollectionExpectSuccess({mode: mode});
+  
       const constitution = [];
       for (let i = 0; i < 65; i++) {
         constitution.push({
@@ -441,51 +517,63 @@
           permission: Math.random() > 0.5 ? {mutable: true, collectionAdmin: true, tokenOwner: true} : {},
         });
       }
-
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setTokenPropertyPermissions(collection, constitution), 
       )).to.be.rejectedWith(/common\.PropertyLimitReached/);
-
+  
       const propertyRights = (await api.query.common.collectionPropertyPermissions(collection)).toJSON();
       expect(propertyRights).to.be.empty;
-    });
+    });  
+  }
+  it('Prevents from adding too many possible properties (NFT)', async () => {
+    await testPreventFromAddingTooManyPossibleProperties({type: 'NFT'});
   });
+  it('Prevents from adding too many possible properties (ReFungible)', async () => {
+    await testPreventFromAddingTooManyPossibleProperties({type: 'ReFungible'});
+  });
 
-  it('Prevents access rights to be modified if constant', async () => {
+  async function testPreventAccessRightsModifiedIfConstant(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
-
+      const collection = await createCollectionExpectSuccess({mode: mode});
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setTokenPropertyPermissions(collection, [{key: 'skullduggery', permission: {mutable: false, tokenOwner: true}}]), 
       )).to.not.be.rejected;
-
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setTokenPropertyPermissions(collection, [{key: 'skullduggery', permission: {}}]), 
       )).to.be.rejectedWith(/common\.NoPermission/);
-
+  
       const propertyRights = (await api.rpc.unique.propertyPermissions(collection, ['skullduggery'])).toHuman();
       expect(propertyRights).to.deep.equal([
         {key: 'skullduggery', permission: {'mutable': false, 'collectionAdmin': false, 'tokenOwner': true}},
       ]);
-    });
+    });  
+  }
+  it('Prevents access rights to be modified if constant (NFT)', async () => {
+    await testPreventAccessRightsModifiedIfConstant({type: 'NFT'});
+  });
+  it('Prevents access rights to be modified if constant (ReFungible)', async () => {
+    await testPreventAccessRightsModifiedIfConstant({type: 'ReFungible'});
   });
 
-  it('Prevents adding properties with invalid names', async () => {
+  async function testPreventsAddingPropertiesWithInvalidNames(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
-
+      const collection = await createCollectionExpectSuccess({mode: mode});
+  
       const invalidProperties = [
         [{key: 'skullduggery', permission: {tokenOwner: true}}, {key: 'im possible', permission: {collectionAdmin: true}}],
         [{key: 'G#4', permission: {tokenOwner: true}}],
         [{key: 'HÆMILTON', permission: {mutable: false, collectionAdmin: true, tokenOwner: true}}],
       ];
-
+  
       for (let i = 0; i < invalidProperties.length; i++) {
         await expect(executeTransaction(
           api, 
@@ -493,13 +581,13 @@
           api.tx.unique.setTokenPropertyPermissions(collection, invalidProperties[i]), 
         ), `on setting the new badly-named property #${i}`).to.be.rejectedWith(/common\.InvalidCharacterInPropertyKey/);
       }
-
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setTokenPropertyPermissions(collection, [{key: '', permission: {}}]), 
       ), 'on rejecting an unnamed property').to.be.rejectedWith(/common\.EmptyPropertyKey/);
-
+  
       const correctKey = '--0x03116e387820CA05'; // PolkadotJS would parse this as an already encoded hex-string
       await expect(executeTransaction(
         api, 
@@ -508,30 +596,33 @@
           {key: correctKey, permission: {collectionAdmin: true}},
         ]), 
       ), 'on setting the correctly-but-still-badly-named property').to.not.be.rejected;
-
+  
       const keys = invalidProperties.flatMap(propertySet => propertySet.map(property => property.key)).concat(correctKey).concat('');
-
+  
       const propertyRights = (await api.rpc.unique.propertyPermissions(collection, keys)).toHuman();
       expect(propertyRights).to.be.deep.equal([
         {key: correctKey, permission: {mutable: false, collectionAdmin: true, tokenOwner: false}},
       ]);
     });
+  }
+  it('Prevents adding properties with invalid names (NFT)', async () => {
+    await testPreventsAddingPropertiesWithInvalidNames({type: 'NFT'});
+  });
+  it('Prevents adding properties with invalid names (ReFungible)', async () => {
+    await testPreventsAddingPropertiesWithInvalidNames({type: 'ReFungible'});
   });
 });
 
 // ---------- TOKEN PROPERTIES
 
 describe('Integration Test: Token Properties', () => {
-  let collection: number;
-  let token: number;
-  let nestedToken: number;
   let permissions: {permission: any, signers: IKeyringPair[]}[];
 
   before(async () => {
     await usingApi(async (api, privateKeyWrapper) => {
-      alice = privateKeyWrapper('//Alice');
-      bob = privateKeyWrapper('//Bob');
-      charlie = privateKeyWrapper('//Charlie');
+      alice = privateKeyWrapper('//Alice'); // collection owner
+      bob = privateKeyWrapper('//Bob'); // collection admin
+      charlie = privateKeyWrapper('//Charlie'); // token owner
 
       permissions = [
         {permission: {mutable: true, collectionAdmin: true}, signers: [alice, bob]},
@@ -543,36 +634,34 @@
       ];
     });
   });
-
-  beforeEach(async () => {
-    await usingApi(async () => {
-      collection = await createCollectionExpectSuccess();
-      await setCollectionPermissionsExpectSuccess(alice, collection, {nesting: {tokenOwner: true}});
-
-      token = await createItemExpectSuccess(alice, collection, 'NFT');
-      nestedToken = await createItemExpectSuccess(alice, collection, 'NFT', {Ethereum: tokenIdToAddress(collection, token)});
-
-      await addCollectionAdminExpectSuccess(alice, collection, bob.address);
-      await transferExpectSuccess(collection, token, alice, charlie);
-    });
-  });
   
-  it('Reads yet empty properties of a token', async () => {
+  async function testReadsYetEmptyProperties(mode: CollectionMode) {
     await usingApi(async api => {
-      const collection = await createCollectionExpectSuccess();
-      const token = await createItemExpectSuccess(alice, collection, 'NFT');
+      const collection = await createCollectionExpectSuccess({mode: mode});
+      const token = await createItemExpectSuccess(alice, collection, mode.type);
   
       const properties = (await api.query.nonfungible.tokenProperties(collection, token)).toJSON();
       expect(properties.map).to.be.empty;
       expect(properties.consumedSpace).to.be.equal(0);
-
+  
       const tokenData = (await api.rpc.unique.tokenData(collection, token, ['anything'])).toJSON().properties;
       expect(tokenData).to.be.empty;
     });
+  }
+  it('Reads yet empty properties of a token (NFT)', async () => {
+    await testReadsYetEmptyProperties({type: 'NFT'});
   });
+  it('Reads yet empty properties of a token (ReFungible)', async () => {
+    await testReadsYetEmptyProperties({type: 'ReFungible'});
+  });
 
-  it('Assigns properties to a token according to permissions', async () => {
+  async function testAssignPropertiesAccordingToPermissions(mode: CollectionMode, pieces: number) {
     await usingApi(async api => {
+      const collection = await createCollectionExpectSuccess({mode: mode});
+      const token = await createItemExpectSuccess(alice, collection, mode.type);
+      await addCollectionAdminExpectSuccess(alice, collection, bob.address);
+      await transferExpectSuccess(collection, token, alice, charlie, pieces, mode.type);
+
       const propertyKeys: string[] = [];
       let i = 0;
       for (const permission of permissions) {
@@ -603,10 +692,21 @@
         expect(tokensData[i].value).to.be.equal('Serotonin increase');
       }
     });
+  }
+  it('Assigns properties to a token according to permissions (NFT)', async () => {
+    await testAssignPropertiesAccordingToPermissions({type: 'NFT'}, 1);
+  });
+  it('Assigns properties to a token according to permissions (ReFungible)', async () => {
+    await testAssignPropertiesAccordingToPermissions({type: 'ReFungible'}, 100);
   });
 
-  it('Changes properties of a token according to permissions', async () => {
+  async function testChangesPropertiesAccordingPermission(mode: CollectionMode, pieces: number) {
     await usingApi(async api => {
+      const collection = await createCollectionExpectSuccess({mode: mode});
+      const token = await createItemExpectSuccess(alice, collection, mode.type);
+      await addCollectionAdminExpectSuccess(alice, collection, bob.address);
+      await transferExpectSuccess(collection, token, alice, charlie, pieces, mode.type);
+
       const propertyKeys: string[] = [];
       let i = 0;
       for (const permission of permissions) {
@@ -615,29 +715,29 @@
         for (const signer of permission.signers) {
           const key = i + '_' + signer.address;
           propertyKeys.push(key);
-
+  
           await expect(executeTransaction(
             api, 
             alice, 
             api.tx.unique.setTokenPropertyPermissions(collection, [{key: key, permission: permission.permission}]), 
           ), `on setting permission ${i} by ${signer.address}`).to.not.be.rejected;
-
+  
           await expect(executeTransaction(
             api, 
             signer, 
             api.tx.unique.setTokenProperties(collection, token, [{key: key, value: 'Serotonin increase'}]), 
           ), `on adding property ${i} by ${signer.address}`).to.not.be.rejected;
-
+  
           await expect(executeTransaction(
             api, 
             signer, 
             api.tx.unique.setTokenProperties(collection, token, [{key: key, value: 'Serotonin stable'}]), 
           ), `on changing property ${i} by ${signer.address}`).to.not.be.rejected;
         }
-
+  
         i++;
       }
-
+  
       const properties = (await api.rpc.unique.tokenProperties(collection, token, propertyKeys)).toHuman() as any[];
       const tokensData = (await api.rpc.unique.tokenData(collection, token, propertyKeys)).toHuman().properties as any[];
       for (let i = 0; i < properties.length; i++) {
@@ -645,32 +745,43 @@
         expect(tokensData[i].value).to.be.equal('Serotonin stable');
       }
     });
+  }
+  it('Changes properties of a token according to permissions (NFT)', async () => {
+    await testChangesPropertiesAccordingPermission({type: 'NFT'}, 1);
   });
+  it('Changes properties of a token according to permissions (ReFungible)', async () => {
+    await testChangesPropertiesAccordingPermission({type: 'ReFungible'}, 100);
+  });
 
-  it('Deletes properties of a token according to permissions', async () => {
+  async function testDeletePropertiesAccordingPermission(mode: CollectionMode, pieces: number) {
     await usingApi(async api => {
+      const collection = await createCollectionExpectSuccess({mode: mode});
+      const token = await createItemExpectSuccess(alice, collection, mode.type);
+      await addCollectionAdminExpectSuccess(alice, collection, bob.address);
+      await transferExpectSuccess(collection, token, alice, charlie, pieces, mode.type);
+
       const propertyKeys: string[] = [];
       let i = 0;
-
+  
       for (const permission of permissions) {
         if (!permission.permission.mutable) continue;
         
         for (const signer of permission.signers) {
           const key = i + '_' + signer.address;
           propertyKeys.push(key);
-
+  
           await expect(executeTransaction(
             api, 
             alice, 
             api.tx.unique.setTokenPropertyPermissions(collection, [{key: key, permission: permission.permission}]), 
           ), `on setting permission ${i} by ${signer.address}`).to.not.be.rejected;
-
+  
           await expect(executeTransaction(
             api, 
             signer, 
             api.tx.unique.setTokenProperties(collection, token, [{key: key, value: 'Serotonin increase'}]), 
           ), `on adding property ${i} by ${signer.address}`).to.not.be.rejected;
-
+  
           await expect(executeTransaction(
             api, 
             signer, 
@@ -680,17 +791,30 @@
         
         i++;
       }
-
+  
       const properties = (await api.rpc.unique.tokenProperties(collection, token, propertyKeys)).toJSON() as any[];
       expect(properties).to.be.empty;
       const tokensData = (await api.rpc.unique.tokenData(collection, token, propertyKeys)).toJSON().properties as any[];
       expect(tokensData).to.be.empty;
       expect((await api.query.nonfungible.tokenProperties(collection, token)).toJSON().consumedSpace).to.be.equal(0);
     });
+  }
+  it('Deletes properties of a token according to permissions (NFT)', async () => {
+    await testDeletePropertiesAccordingPermission({type: 'NFT'}, 1);
   });
+  it('Deletes properties of a token according to permissions (ReFungible)', async () => {
+    await testDeletePropertiesAccordingPermission({type: 'ReFungible'}, 100);
+  });
 
   it('Assigns properties to a nested token according to permissions', async () => {
     await usingApi(async api => {
+      const collection = await createCollectionExpectSuccess({mode: {type: 'NFT'}});
+      await setCollectionPermissionsExpectSuccess(alice, collection, {nesting: {tokenOwner: true}});
+      const token = await createItemExpectSuccess(alice, collection, 'NFT');
+      const nestedToken = await createItemExpectSuccess(alice, collection, 'NFT', {Ethereum: tokenIdToAddress(collection, token)});
+      await addCollectionAdminExpectSuccess(alice, collection, bob.address);
+      await transferExpectSuccess(collection, token, alice, charlie);
+
       const propertyKeys: string[] = [];
       let i = 0;
       for (const permission of permissions) {
@@ -725,6 +849,13 @@
 
   it('Changes properties of a nested token according to permissions', async () => {
     await usingApi(async api => {
+      const collection = await createCollectionExpectSuccess({mode: {type: 'NFT'}});
+      await setCollectionPermissionsExpectSuccess(alice, collection, {nesting: {tokenOwner: true}});
+      const token = await createItemExpectSuccess(alice, collection, 'NFT');
+      const nestedToken = await createItemExpectSuccess(alice, collection, 'NFT', {Ethereum: tokenIdToAddress(collection, token)});
+      await addCollectionAdminExpectSuccess(alice, collection, bob.address);
+      await transferExpectSuccess(collection, token, alice, charlie);
+
       const propertyKeys: string[] = [];
       let i = 0;
       for (const permission of permissions) {
@@ -767,6 +898,13 @@
 
   it('Deletes properties of a nested token according to permissions', async () => {
     await usingApi(async api => {
+      const collection = await createCollectionExpectSuccess({mode: {type: 'NFT'}});
+      await setCollectionPermissionsExpectSuccess(alice, collection, {nesting: {tokenOwner: true}});
+      const token = await createItemExpectSuccess(alice, collection, 'NFT');
+      const nestedToken = await createItemExpectSuccess(alice, collection, 'NFT', {Ethereum: tokenIdToAddress(collection, token)});
+      await addCollectionAdminExpectSuccess(alice, collection, bob.address);
+      await transferExpectSuccess(collection, token, alice, charlie);
+
       const propertyKeys: string[] = [];
       let i = 0;
 
@@ -832,11 +970,11 @@
     });
   });
 
-  beforeEach(async () => {
-    collection = await createCollectionExpectSuccess();
-    token = await createItemExpectSuccess(alice, collection, 'NFT');
+  async function prepare(mode: CollectionMode, pieces: number) {
+    collection = await createCollectionExpectSuccess({mode: mode});
+    token = await createItemExpectSuccess(alice, collection, mode.type);
     await addCollectionAdminExpectSuccess(alice, collection, bob.address);
-    await transferExpectSuccess(collection, token, alice, charlie);
+    await transferExpectSuccess(collection, token, alice, charlie, pieces, mode.type);
         
     await usingApi(async api => {
       let i = 0;
@@ -848,71 +986,89 @@
           alice, 
           api.tx.unique.setTokenPropertyPermissions(collection, [{key: `${i}`, permission: passage.permission}]), 
         ), `on setting permission ${i} by ${signer.address}`).to.not.be.rejected;
-
+  
         await expect(executeTransaction(
           api, 
           signer, 
           api.tx.unique.setTokenProperties(collection, token, [{key: `${i}`, value: 'Serotonin increase'}]), 
         ), `on adding property ${i} by ${signer.address}`).to.not.be.rejected;
-
+  
         i++;
       }
-
+  
       originalSpace = (await api.query.nonfungible.tokenProperties(collection, token)).toJSON().consumedSpace as number;
-    });
-  });
+    }); 
+  }
 
-  it('Forbids changing/deleting properties of a token if the user is outside of permissions', async () => {
+  async function testForbidsChangingDeletingPropertiesUserOutsideOfPermissions(mode: CollectionMode, pieces: number) {
+    await prepare(mode, pieces);
+  
     await usingApi(async api => {
       let i = -1;
       for (const forbiddance of constitution) {
         i++;
         if (!forbiddance.permission.mutable) continue;
-
+  
         await expect(executeTransaction(
           api, 
           forbiddance.sinner, 
           api.tx.unique.setTokenProperties(collection, token, [{key: `${i}`, value: 'Serotonin down'}]), 
         ), `on failing to change property ${i} by ${forbiddance.sinner.address}`).to.be.rejectedWith(/common\.NoPermission/);
-
+  
         await expect(executeTransaction(
           api, 
           forbiddance.sinner, 
           api.tx.unique.deleteTokenProperties(collection, token, [`${i}`]), 
         ), `on failing to delete property ${i} by ${forbiddance.sinner.address}`).to.be.rejectedWith(/common\.NoPermission/);
       }
-
+  
       const properties = (await api.query.nonfungible.tokenProperties(collection, token)).toJSON();
       expect(properties.consumedSpace).to.be.equal(originalSpace);
     });
+  }
+  it('Forbids changing/deleting properties of a token if the user is outside of permissions (NFT)', async () => {
+    await testForbidsChangingDeletingPropertiesUserOutsideOfPermissions({type: 'NFT'}, 1);
   });
+  it('Forbids changing/deleting properties of a token if the user is outside of permissions (ReFungible)', async () => {
+    await testForbidsChangingDeletingPropertiesUserOutsideOfPermissions({type: 'ReFungible'}, 100);
+  });
 
-  it('Forbids changing/deleting properties of a token if the property is permanent (immutable)', async () => {
+  async function testForbidsChangingDeletingPropertiesIfPropertyImmutable(mode: CollectionMode, pieces: number) {
+    await prepare(mode, pieces);
+    
     await usingApi(async api => {
       let i = -1;
       for (const permission of constitution) {
         i++;
         if (permission.permission.mutable) continue;
-
+  
         await expect(executeTransaction(
           api, 
           permission.signers[0], 
           api.tx.unique.setTokenProperties(collection, token, [{key: `${i}`, value: 'Serotonin down'}]), 
         ), `on failing to change property ${i} by ${permission.signers[0].address}`).to.be.rejectedWith(/common\.NoPermission/);
-
+  
         await expect(executeTransaction(
           api, 
           permission.signers[0], 
           api.tx.unique.deleteTokenProperties(collection, token, [i.toString()]), 
         ), `on failing to delete property ${i} by ${permission.signers[0].address}`).to.be.rejectedWith(/common\.NoPermission/);
       }
-
+  
       const properties = (await api.query.nonfungible.tokenProperties(collection, token)).toJSON();
       expect(properties.consumedSpace).to.be.equal(originalSpace);
-    });
+    });  
+  }
+  it('Forbids changing/deleting properties of a token if the property is permanent (immutable) (NFT)', async () => {
+    await testForbidsChangingDeletingPropertiesIfPropertyImmutable({type: 'NFT'}, 1);
   });
+  it('Forbids changing/deleting properties of a token if the property is permanent (immutable) (ReFungible)', async () => {
+    await testForbidsChangingDeletingPropertiesIfPropertyImmutable({type: 'ReFungible'}, 100);
+  });
+
+  async function testForbidsAddingPropertiesIfPropertyNotDeclared(mode: CollectionMode, pieces: number) {
+    await prepare(mode, pieces);
 
-  it('Forbids adding properties to a token if the property is not declared / forbidden with the \'None\' permission', async () => {
     await usingApi(async api => {
       await expect(executeTransaction(
         api, 
@@ -925,20 +1081,28 @@
         alice, 
         api.tx.unique.setTokenPropertyPermissions(collection, [{key: 'now-existent', permission: {}}]), 
       ), 'on setting a new non-permitted property').to.not.be.rejected;
-
+  
       await expect(executeTransaction(
         api, 
         alice, 
         api.tx.unique.setTokenProperties(collection, token, [{key: 'now-existent', value: 'I exist!'}]), 
       ), 'on failing to add a property forbidden by the \'None\' permission').to.be.rejectedWith(/common\.NoPermission/);
-
+  
       expect((await api.rpc.unique.tokenProperties(collection, token, ['non-existent', 'now-existent'])).toJSON()).to.be.empty;
       const properties = (await api.query.nonfungible.tokenProperties(collection, token)).toJSON();
       expect(properties.consumedSpace).to.be.equal(originalSpace);
     });
+  }
+  it('Forbids adding properties to a token if the property is not declared / forbidden with the \'None\' permission (NFT)', async () => {
+    await testForbidsAddingPropertiesIfPropertyNotDeclared({type: 'NFT'}, 1);
+  });
+  it('Forbids adding properties to a token if the property is not declared / forbidden with the \'None\' permission (ReFungible)', async () => {
+    await testForbidsAddingPropertiesIfPropertyNotDeclared({type: 'ReFungible'}, 100);
   });
 
-  it('Forbids adding too many properties to a token', async () => {
+  async function testForbidsAddingTooManyProperties(mode: CollectionMode, pieces: number) {
+    await prepare(mode, pieces);
+
     await usingApi(async api => {
       await expect(executeTransaction(
         api, 
@@ -948,7 +1112,7 @@
           {key: 'young_years', permission: {collectionAdmin: true, tokenOwner: true}},
         ]), 
       ), 'on setting a new non-permitted property').to.not.be.rejected;
-
+  
       // Mute the general tx parsing error
       {
         console.error = () => {};
@@ -958,7 +1122,7 @@
           api.tx.unique.setCollectionProperties(collection, [{key: 'a_holy_book', value: 'word '.repeat(6554)}]), 
         )).to.be.rejected;
       }
-
+  
       await expect(executeTransaction(
         api, 
         alice, 
@@ -967,10 +1131,107 @@
           {key: 'young_years', value: 'neverending'.repeat(1490)},
         ]), 
       )).to.be.rejectedWith(/common\.NoSpaceForProperty/);
-
+  
       expect((await api.rpc.unique.tokenProperties(collection, token, ['a_holy_book', 'young_years'])).toJSON()).to.be.empty;
       const propertiesMap = (await api.query.nonfungible.tokenProperties(collection, token)).toJSON();
       expect(propertiesMap.consumedSpace).to.be.equal(originalSpace);
     });
+  }
+  it('Forbids adding too many properties to a token (NFT)', async () => {
+    await testForbidsAddingTooManyProperties({type: 'NFT'}, 1);
+  });
+  it('Forbids adding too many properties to a token (ReFungible)', async () => {
+    await testForbidsAddingTooManyProperties({type: 'ReFungible'}, 100);
+  });
+});
+
+describe('ReFungible token properties permissions tests', () => {
+  let collection: number;
+  let token: number;
+
+  before(async () => {
+    await usingApi(async (api, privateKeyWrapper) => {
+      alice = privateKeyWrapper('//Alice');
+      bob = privateKeyWrapper('//Bob');
+      charlie = privateKeyWrapper('//Charlie');
+    });
+  });
+
+  beforeEach(async () => {
+    await usingApi(async api => {
+      collection = await createCollectionExpectSuccess({mode: {type: 'ReFungible'}});
+      token = await createItemExpectSuccess(alice, collection, 'ReFungible');
+      await addCollectionAdminExpectSuccess(alice, collection, bob.address);
+
+      await expect(executeTransaction(
+        api, 
+        alice, 
+        api.tx.unique.setTokenPropertyPermissions(collection, [{key: 'key', permission: {mutable:true, tokenOwner: true}}]), 
+      )).to.not.be.rejected;
+    });
+  });
+
+  it('Forbids add token property with tokenOwher==true but signer have\'t all pieces', async () => {
+    await usingApi(async api => {
+      await transferExpectSuccess(collection, token, alice, charlie, 33, 'ReFungible');
+  
+      await expect(executeTransaction(
+        api, 
+        alice, 
+        api.tx.unique.setTokenProperties(collection, token, [
+          {key: 'key', value: 'word'}, 
+        ]), 
+      )).to.be.rejectedWith(/common\.NoPermission/);
+    });
+  });
+
+  it('Forbids mutate token property with tokenOwher==true but signer have\'t all pieces', async () => {
+    await usingApi(async api => {
+      await expect(executeTransaction(
+        api, 
+        alice, 
+        api.tx.unique.setTokenPropertyPermissions(collection, [{key: 'key', permission: {mutable:true, tokenOwner: true}}]), 
+      )).to.not.be.rejected;
+  
+      await expect(executeTransaction(
+        api, 
+        alice, 
+        api.tx.unique.setTokenProperties(collection, token, [
+          {key: 'key', value: 'word'}, 
+        ]), 
+      )).to.be.not.rejected;
+
+      await transferExpectSuccess(collection, token, alice, charlie, 33, 'ReFungible');
+  
+      await expect(executeTransaction(
+        api, 
+        alice, 
+        api.tx.unique.setTokenProperties(collection, token, [
+          {key: 'key', value: 'bad word'}, 
+        ]), 
+      )).to.be.rejectedWith(/common\.NoPermission/);
+    });
+  });
+
+  it('Forbids delete token property with tokenOwher==true but signer have\'t all pieces', async () => {
+    await usingApi(async api => {
+      await expect(executeTransaction(
+        api, 
+        alice, 
+        api.tx.unique.setTokenProperties(collection, token, [
+          {key: 'key', value: 'word'}, 
+        ]), 
+      )).to.be.not.rejected;
+
+      await transferExpectSuccess(collection, token, alice, charlie, 33, 'ReFungible');
+  
+      await expect(executeTransaction(
+        api, 
+        alice, 
+        api.tx.unique.deleteTokenProperties(collection, token, [
+          'key',
+        ]), 
+      )).to.be.rejectedWith(/common\.NoPermission/);
+    });
   });
 });
modifiedtests/src/refungible.test.tsdiffbeforeafterboth
--- a/tests/src/refungible.test.ts
+++ b/tests/src/refungible.test.ts
@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
-import {default as usingApi} from './substrate/substrate-api';
+import {default as usingApi, submitTransactionAsync} from './substrate/substrate-api';
 import {IKeyringPair} from '@polkadot/types/types';
 import {
   createCollectionExpectSuccess,
@@ -30,6 +30,12 @@
   transfer,
   burnItem,
   repartitionRFT,
+  createCollectionWithPropsExpectSuccess,
+  getDetailedCollectionInfo,
+  normalizeAccountId,
+  CrossAccountId,
+  getCreateItemsResult,
+  getDestroyItemsResult,
 } from './util/helpers';
 
 import chai from 'chai';
@@ -51,14 +57,14 @@
   it('Create refungible collection and token', async () => {
     await usingApi(async api => {
       const createCollectionResult = await createCollection(api, alice, {mode: {type: 'ReFungible'}});
-      expect(createCollectionResult.success).to.be.true;    
+      expect(createCollectionResult.success).to.be.true;
       const collectionId  = createCollectionResult.collectionId;
-
+      
       const itemCountBefore = await getLastTokenId(api, collectionId);
       const result = await createRefungibleToken(api, alice, collectionId, 100n);
-
+      
       const itemCountAfter = await getLastTokenId(api, collectionId);
-
+      
       // What to expect
       // tslint:disable-next-line:no-unused-expression
       expect(result.success).to.be.true;
@@ -67,7 +73,43 @@
       expect(itemCountAfter.toString()).to.be.equal(result.itemId.toString());
     });
   });
-
+  
+  it('RPC method tokenOnewrs for refungible collection and token', async () => {
+    await usingApi(async (api, privateKeyWrapper) => {
+      const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
+      const facelessCrowd = Array.from(Array(7).keys()).map(i => normalizeAccountId(privateKeyWrapper(i.toString())));
+      
+      const createCollectionResult = await createCollection(api, alice, {mode: {type: 'ReFungible'}});
+      const collectionId = createCollectionResult.collectionId;
+      
+      const result = await createRefungibleToken(api, alice, collectionId, 10_000n);
+      const aliceTokenId = result.itemId;
+      
+      
+      await transfer(api, collectionId, aliceTokenId, alice, bob, 1000n);
+      await transfer(api, collectionId, aliceTokenId, alice, ethAcc, 900n);
+      
+      for (let i = 0; i < 7; i++) {
+        await transfer(api, collectionId, aliceTokenId, alice, facelessCrowd[i], 50*(i+1));
+      } 
+      
+      const owners = await api.rpc.unique.tokenOwners(collectionId, aliceTokenId);
+      const ids = (owners.toJSON() as CrossAccountId[]).map(s => normalizeAccountId(s));
+      
+      const aliceID = normalizeAccountId(alice);
+      const bobId = normalizeAccountId(bob);
+      
+      // What to expect
+      // tslint:disable-next-line:no-unused-expression
+      expect(ids).to.deep.include.members([aliceID, ethAcc, bobId, ...facelessCrowd]);
+      expect(owners.length).to.be.equal(10);
+      
+      const eleven = privateKeyWrapper('11');
+      expect(await transfer(api, collectionId, aliceTokenId, alice, eleven, 10n)).to.be.true;
+      expect((await api.rpc.unique.tokenOwners(collectionId, aliceTokenId)).length).to.be.equal(10);
+    });
+  });
+  
   it('Transfer token pieces', async () => {
     await usingApi(async api => {
       const collectionId = (await createCollection(api, alice, {mode: {type: 'ReFungible'}})).collectionId;
@@ -186,4 +228,67 @@
       await expect(transfer(api, collectionId, tokenId, bob, alice, 160n)).to.eventually.be.rejected;
     });
   });
+
+  it('Repartition with increased amount', async () => {
+    await usingApi(async api => {
+      const collectionId = (await createCollection(api, alice, {mode: {type: 'ReFungible'}})).collectionId;
+      const tokenId = (await createRefungibleToken(api, alice, collectionId, 100n)).itemId;
+
+      const tx = api.tx.unique.repartition(collectionId, tokenId, 200n);
+      const events = await submitTransactionAsync(alice, tx);
+      const substrateEvents = getCreateItemsResult(events);
+      expect(substrateEvents).to.include.deep.members([
+        {
+          success: true,
+          collectionId,
+          itemId: tokenId,
+          recipient: {Substrate: alice.address},
+          amount: 100,
+        },
+      ]);
+    });
+  });
+
+  it('Repartition with decreased amount', async () => {
+    await usingApi(async api => {
+      const collectionId = (await createCollection(api, alice, {mode: {type: 'ReFungible'}})).collectionId;
+      const tokenId = (await createRefungibleToken(api, alice, collectionId, 100n)).itemId;
+
+      const tx = api.tx.unique.repartition(collectionId, tokenId, 50n);
+      const events = await submitTransactionAsync(alice, tx);
+      const substrateEvents = getDestroyItemsResult(events);
+      expect(substrateEvents).to.include.deep.members([
+        {
+          success: true,
+          collectionId,
+          itemId: tokenId,
+          owner: {Substrate: alice.address},
+          amount: 50,
+        },
+      ]);
+    });
+  });
+});
+
+describe('Test Refungible properties:', () => {
+  before(async () => {
+    await usingApi(async (api, privateKeyWrapper) => {
+      alice = privateKeyWrapper('//Alice');
+      bob = privateKeyWrapper('//Bob');
+    });
+  });
+  
+  it('Сreate new collection with properties', async () => {
+    await usingApi(async api => {
+      const properties = [{key: 'key1', value: 'val1'}];
+      const propertyPermissions = [{key: 'key1', permission: {tokenOwner: true, mutable: false, collectionAdmin: true}}];
+      const collectionId = await createCollectionWithPropsExpectSuccess({name: 'A', description: 'B', tokenPrefix: 'C', mode: {type: 'ReFungible'},
+        properties: properties,
+        propPerm: propertyPermissions, 
+      });
+      const collection = (await getDetailedCollectionInfo(api, collectionId))!;
+      expect(collection.properties.toHuman()).to.be.deep.equal(properties);
+      expect(collection.tokenPropertyPermissions.toHuman()).to.be.deep.equal(propertyPermissions);
+    });
+  });
 });
modifiedtests/src/rpc.test.tsdiffbeforeafterboth
--- a/tests/src/rpc.test.ts
+++ b/tests/src/rpc.test.ts
@@ -1,12 +1,57 @@
+import {IKeyringPair} from '@polkadot/types/types';
 import {expect} from 'chai';
 import usingApi from './substrate/substrate-api';
-import {createCollectionExpectSuccess, getTokenOwner} from './util/helpers';
+import {createCollection, createCollectionExpectSuccess, createFungibleItemExpectSuccess, CrossAccountId, getTokenOwner, normalizeAccountId, transfer, U128_MAX} from './util/helpers';
+
+let alice: IKeyringPair;
+let bob: IKeyringPair;
 
-describe('getTokenOwner', () => {
+
+describe('integration test: RPC methods', () => {
+  before(async () => {
+    await usingApi(async (api, privateKeyWrapper) => {
+      alice = privateKeyWrapper('//Alice');
+      bob = privateKeyWrapper('//Bob');
+    });
+  });
+
+  
   it('returns None for fungible collection', async () => {
     await usingApi(async api => {
       const collection = await createCollectionExpectSuccess({mode: {type: 'Fungible', decimalPoints: 0}});
       await expect(getTokenOwner(api, collection, 0)).to.be.rejectedWith(/^owner == null$/);
     });
   });
+  
+  it('RPC method tokenOwners for fungible collection and token', async () => {
+    await usingApi(async (api, privateKeyWrapper) => {
+      const ethAcc = {Ethereum: '0x67fb3503a61b284dc83fa96dceec4192db47dc7c'};
+      const facelessCrowd = Array.from(Array(7).keys()).map(i => normalizeAccountId(privateKeyWrapper(i.toString())));
+      
+      const createCollectionResult = await createCollection(api, alice, {mode: {type: 'Fungible', decimalPoints: 0}});
+      const collectionId = createCollectionResult.collectionId;
+      const aliceTokenId = await createFungibleItemExpectSuccess(alice, collectionId, {Value: U128_MAX}, alice.address);
+     
+      await transfer(api, collectionId, aliceTokenId, alice, bob, 1000n);
+      await transfer(api, collectionId, aliceTokenId, alice, ethAcc, 900n);
+            
+      for (let i = 0; i < 7; i++) {
+        await transfer(api, collectionId, aliceTokenId, alice, facelessCrowd[i], 1);
+      } 
+      
+      const owners = await api.rpc.unique.tokenOwners(collectionId, aliceTokenId);
+      const ids = (owners.toJSON() as CrossAccountId[]).map(s => normalizeAccountId(s));
+      const aliceID = normalizeAccountId(alice);
+      const bobId = normalizeAccountId(bob);
+
+      // What to expect
+      // tslint:disable-next-line:no-unused-expression
+      expect(ids).to.deep.include.members([aliceID, ethAcc, bobId, ...facelessCrowd]);
+      expect(owners.length == 10).to.be.true;
+      
+      const eleven = privateKeyWrapper('11');
+      expect(await transfer(api, collectionId, aliceTokenId, alice, eleven, 10n)).to.be.true;
+      expect((await api.rpc.unique.tokenOwners(collectionId, aliceTokenId)).length).to.be.equal(10);
+    });
+  });
 });
\ No newline at end of file
modifiedtests/src/util/helpers.tsdiffbeforeafterboth
--- a/tests/src/util/helpers.ts
+++ b/tests/src/util/helpers.ts
@@ -103,6 +103,15 @@
   collectionId: number;
   itemId: number;
   recipient?: CrossAccountId;
+  amount?: number;
+}
+
+interface DestroyItemResult {
+  success: boolean;
+  collectionId: number;
+  itemId: number;
+  owner: CrossAccountId;
+  amount: number;
 }
 
 interface TransferResult {
@@ -220,12 +229,14 @@
     const collectionId = parseInt(data[0].toString(), 10);
     const itemId = parseInt(data[1].toString(), 10);
     const recipient = normalizeAccountId(data[2].toJSON() as any);
+    const amount = parseInt(data[3].toString(), 10);
 
     const itemRes: CreateItemResult = {
       success: true,
       collectionId,
       itemId,
       recipient,
+      amount,
     };
 
     results.push(itemRes);
@@ -255,6 +266,31 @@
   return result;
 }
 
+export function getDestroyItemsResult(events: EventRecord[]): DestroyItemResult[] {
+  const results: DestroyItemResult[] = [];
+  
+  const genericResult = getGenericResult<DestroyItemResult[]>(events, 'common', 'ItemDestroyed', (data) => {
+    const collectionId = parseInt(data[0].toString(), 10);
+    const itemId = parseInt(data[1].toString(), 10);
+    const owner = normalizeAccountId(data[2].toJSON() as any);
+    const amount = parseInt(data[3].toString(), 10);
+
+    const itemRes: DestroyItemResult = {
+      success: true,
+      collectionId,
+      itemId,
+      owner,
+      amount,
+    };
+
+    results.push(itemRes);
+    return results;
+  });
+
+  if (!genericResult.success) return [];
+  return results;
+}
+
 export function getTransferResult(api: ApiPromise, events: EventRecord[]): TransferResult {
   for (const {event} of events) {
     if (api.events.common.Transfer.is(event)) {
@@ -284,7 +320,7 @@
   type: 'ReFungible';
 }
 
-type CollectionMode = Nft | Fungible | ReFungible;
+export type CollectionMode = Nft | Fungible | ReFungible;
 
 export type Property = {
   key: any,
@@ -1414,7 +1450,7 @@
       tx = api.tx.unique.createItem(collectionId, to, createData as any);
     }
 
-    const events = await submitTransactionAsync(sender, tx);
+    const events = await executeTransaction(api, sender, tx);
     const result = getCreateItemResult(events);
 
     const itemCountAfter = await getLastTokenId(api, collectionId);