git.delta.rocks / unique-network / refs/commits / 2e3c4de7682f

--- a/.maintain/scripts/generate_sol.sh
+++ b/.maintain/scripts/generate_sol.sh
@@ -11,4 +11,6 @@
 formatted=$(mktemp)
 prettier --config $PRETTIER_CONFIG $raw > $formatted
 
+sed -i -E -e "s/.+\/\/ FORMATTING: FORCE NEWLINE//g" $formatted
+
 mv $formatted $OUTPUT

--- a/crates/evm-coder/procedural/src/solidity_interface.rs
+++ b/crates/evm-coder/procedural/src/solidity_interface.rs
@@ -291,22 +291,40 @@
 
 struct MethodInfo {
 	rename_selector: Option<String>,
+	hide: bool,
 }
 impl Parse for MethodInfo {
 	fn parse(input: ParseStream) -> syn::Result<Self> {
 		let mut rename_selector = None;
-		let lookahead = input.lookahead1();
-		if lookahead.peek(kw::rename_selector) {
-			let k = input.parse::<kw::rename_selector>()?;
-			input.parse::<Token![=]>()?;
-			if rename_selector
-				.replace(input.parse::<LitStr>()?.value())
-				.is_some()
-			{
-				return Err(syn::Error::new(k.span(), "rename_selector is already set"));
+		let mut hide = false;
+		while !input.is_empty() {
+			let lookahead = input.lookahead1();
+			if lookahead.peek(kw::rename_selector) {
+				let k = input.parse::<kw::rename_selector>()?;
+				input.parse::<Token![=]>()?;
+				if rename_selector
+					.replace(input.parse::<LitStr>()?.value())
+					.is_some()
+				{
+					return Err(syn::Error::new(k.span(), "rename_selector is already set"));
+				}
+			} else if lookahead.peek(kw::hide) {
+				input.parse::<kw::hide>()?;
+				hide = true;
+			} else {
+				return Err(lookahead.error());
+			}
+
+			if input.peek(Token![,]) {
+				input.parse::<Token![,]>()?;
+			} else if !input.is_empty() {
+				return Err(syn::Error::new(input.span(), "expected end"));
 			}
 		}
-		Ok(Self { rename_selector })
+		Ok(Self {
+			rename_selector,
+			hide,
+		})
 	}
 }
 
@@ -548,6 +566,7 @@
 	syn::custom_keyword!(expect_selector);
 
 	syn::custom_keyword!(rename_selector);
+	syn::custom_keyword!(hide);
 }
 
 /// Rust methods are parsed into this structure when Solidity code is generated
@@ -558,6 +577,7 @@
 	screaming_name: Ident,
 	selector_str: String,
 	selector: u32,
+	hide: bool,
 	args: Vec<MethodArg>,
 	has_normal_args: bool,
 	has_value_args: bool,
@@ -570,6 +590,7 @@
 	fn try_from(value: &ImplItemMethod) -> syn::Result<Self> {
 		let mut info = MethodInfo {
 			rename_selector: None,
+			hide: false,
 		};
 		let mut docs = Vec::new();
 		let mut weight = None;
@@ -667,6 +688,7 @@
 			screaming_name: snake_ident_to_screaming(ident),
 			selector_str,
 			selector,
+			hide: info.hide,
 			args,
 			has_normal_args,
 			has_value_args,
@@ -826,12 +848,14 @@
 		let docs = &self.docs;
 		let selector_str = &self.selector_str;
 		let selector = self.selector;
+		let hide = self.hide;
 		let is_payable = self.has_value_args;
 		quote! {
 			SolidityFunction {
 				docs: &[#(#docs),*],
 				selector_str: #selector_str,
 				selector: #selector,
+				hide: #hide,
 				name: #camel_name,
 				mutability: #mutability,
 				is_payable: #is_payable,

--- a/crates/evm-coder/src/solidity.rs
+++ b/crates/evm-coder/src/solidity.rs
@@ -225,7 +225,7 @@
 
 pub trait SolidityArguments {
 	fn solidity_name(&self, writer: &mut impl fmt::Write, tc: &TypeCollector) -> fmt::Result;
-	fn solidity_get(&self, writer: &mut impl fmt::Write) -> fmt::Result;
+	fn solidity_get(&self, prefix: &str, writer: &mut impl fmt::Write) -> fmt::Result;
 	fn solidity_default(&self, writer: &mut impl fmt::Write, tc: &TypeCollector) -> fmt::Result;
 	fn is_empty(&self) -> bool {
 		self.len() == 0
@@ -248,7 +248,7 @@
 			Ok(())
 		}
 	}
-	fn solidity_get(&self, _writer: &mut impl fmt::Write) -> fmt::Result {
+	fn solidity_get(&self, _prefix: &str, _writer: &mut impl fmt::Write) -> fmt::Result {
 		Ok(())
 	}
 	fn solidity_default(&self, writer: &mut impl fmt::Write, tc: &TypeCollector) -> fmt::Result {
@@ -283,8 +283,8 @@
 			Ok(())
 		}
 	}
-	fn solidity_get(&self, writer: &mut impl fmt::Write) -> fmt::Result {
-		writeln!(writer, "\t\t{};", self.0)
+	fn solidity_get(&self, prefix: &str, writer: &mut impl fmt::Write) -> fmt::Result {
+		writeln!(writer, "\t{prefix}\t{};", self.0)
 	}
 	fn solidity_default(&self, writer: &mut impl fmt::Write, tc: &TypeCollector) -> fmt::Result {
 		T::solidity_default(writer, tc)
@@ -318,8 +318,8 @@
 			Ok(())
 		}
 	}
-	fn solidity_get(&self, writer: &mut impl fmt::Write) -> fmt::Result {
-		writeln!(writer, "\t\t{};", self.1)
+	fn solidity_get(&self, prefix: &str, writer: &mut impl fmt::Write) -> fmt::Result {
+		writeln!(writer, "\t{prefix}\t{};", self.1)
 	}
 	fn solidity_default(&self, writer: &mut impl fmt::Write, tc: &TypeCollector) -> fmt::Result {
 		T::solidity_default(writer, tc)
@@ -337,7 +337,7 @@
 	fn solidity_name(&self, _writer: &mut impl fmt::Write, _tc: &TypeCollector) -> fmt::Result {
 		Ok(())
 	}
-	fn solidity_get(&self, _writer: &mut impl fmt::Write) -> fmt::Result {
+	fn solidity_get(&self, _prefix: &str, _writer: &mut impl fmt::Write) -> fmt::Result {
 		Ok(())
 	}
 	fn solidity_default(&self, _writer: &mut impl fmt::Write, _tc: &TypeCollector) -> fmt::Result {
@@ -365,9 +365,9 @@
         )* );
 		Ok(())
 	}
-	fn solidity_get(&self, writer: &mut impl fmt::Write) -> fmt::Result {
+	fn solidity_get(&self, prefix: &str, writer: &mut impl fmt::Write) -> fmt::Result {
 		for_tuples!( #(
-            Tuple.solidity_get(writer)?;
+            Tuple.solidity_get(prefix, writer)?;
         )* );
 		Ok(())
 	}
@@ -418,6 +418,7 @@
 	pub docs: &'static [&'static str],
 	pub selector_str: &'static str,
 	pub selector: u32,
+	pub hide: bool,
 	pub name: &'static str,
 	pub args: A,
 	pub result: R,
@@ -431,16 +432,21 @@
 		writer: &mut impl fmt::Write,
 		tc: &TypeCollector,
 	) -> fmt::Result {
+		let hide_comment = self.hide.then(|| "// ").unwrap_or("");
 		for doc in self.docs {
-			writeln!(writer, "\t///{}", doc)?;
+			writeln!(writer, "\t{hide_comment}///{}", doc)?;
 		}
 		writeln!(
 			writer,
-			"\t/// @dev EVM selector for this function is: 0x{:0>8x},",
+			"\t{hide_comment}/// @dev EVM selector for this function is: 0x{:0>8x},",
 			self.selector
 		)?;
-		writeln!(writer, "\t///  or in textual repr: {}", self.selector_str)?;
-		write!(writer, "\tfunction {}(", self.name)?;
+		writeln!(
+			writer,
+			"\t{hide_comment}///  or in textual repr: {}",
+			self.selector_str
+		)?;
+		write!(writer, "\t{hide_comment}function {}(", self.name)?;
 		self.args.solidity_name(writer, tc)?;
 		write!(writer, ")")?;
 		if is_impl {
@@ -463,22 +469,25 @@
 		}
 		if is_impl {
 			writeln!(writer, " {{")?;
-			writeln!(writer, "\t\trequire(false, stub_error);")?;
-			self.args.solidity_get(writer)?;
+			writeln!(writer, "\t{hide_comment}\trequire(false, stub_error);")?;
+			self.args.solidity_get(hide_comment, writer)?;
 			match &self.mutability {
 				SolidityMutability::Pure => {}
-				SolidityMutability::View => writeln!(writer, "\t\tdummy;")?,
-				SolidityMutability::Mutable => writeln!(writer, "\t\tdummy = 0;")?,
+				SolidityMutability::View => writeln!(writer, "\t{hide_comment}\tdummy;")?,
+				SolidityMutability::Mutable => writeln!(writer, "\t{hide_comment}\tdummy = 0;")?,
 			}
 			if !self.result.is_empty() {
-				write!(writer, "\t\treturn ")?;
+				write!(writer, "\t{hide_comment}\treturn ")?;
 				self.result.solidity_default(writer, tc)?;
 				writeln!(writer, ";")?;
 			}
-			writeln!(writer, "\t}}")?;
+			writeln!(writer, "\t{hide_comment}}}")?;
 		} else {
 			writeln!(writer, ";")?;
 		}
+		if self.hide {
+			writeln!(writer, "// FORMATTING: FORCE NEWLINE")?;
+		}
 		Ok(())
 	}
 }

--- a/pallets/common/src/dispatch.rs
+++ b/pallets/common/src/dispatch.rs
@@ -9,7 +9,7 @@
 	traits::Get,
 };
 use sp_runtime::DispatchError;
-use up_data_structs::{CollectionId, CreateCollectionData};
+use up_data_structs::{CollectionId, CreateCollectionData, CollectionFlags};
 
 use crate::{pallet::Config, CommonCollectionOperations, CollectionHandle};
 
@@ -80,6 +80,7 @@
 		sender: T::CrossAccountId,
 		payer: T::CrossAccountId,
 		data: CreateCollectionData<T::AccountId>,
+		flags: CollectionFlags,
 	) -> Result<CollectionId, DispatchError>;
 
 	/// Delete the collection.

--- a/pallets/common/src/erc.rs
+++ b/pallets/common/src/erc.rs
@@ -592,6 +592,7 @@
 	///
 	/// @dev Owner can be changed only by current owner
 	/// @param newOwner new owner account
+	#[solidity(rename_selector = "changeCollectionOwner")]
 	fn set_owner(&mut self, caller: caller, new_owner: address) -> Result<void> {
 		self.consume_store_writes(1)?;
 
@@ -659,11 +660,6 @@
 	/// Keys.
 	pub mod key {
 		use super::*;
-
-		/// Key "schemaName".
-		pub fn schema_name() -> up_data_structs::PropertyKey {
-			property_key_from_bytes(b"schemaName").expect(EXPECT_CONVERT_ERROR)
-		}
 
 		/// Key "baseURI".
 		pub fn base_uri() -> up_data_structs::PropertyKey {
@@ -672,30 +668,17 @@
 
 		/// Key "url".
 		pub fn url() -> up_data_structs::PropertyKey {
-			property_key_from_bytes(b"url").expect(EXPECT_CONVERT_ERROR)
+			property_key_from_bytes(b"URI").expect(EXPECT_CONVERT_ERROR)
 		}
 
 		/// Key "suffix".
 		pub fn suffix() -> up_data_structs::PropertyKey {
-			property_key_from_bytes(b"suffix").expect(EXPECT_CONVERT_ERROR)
+			property_key_from_bytes(b"URISuffix").expect(EXPECT_CONVERT_ERROR)
 		}
 
 		/// Key "parentNft".
 		pub fn parent_nft() -> up_data_structs::PropertyKey {
 			property_key_from_bytes(b"parentNft").expect(EXPECT_CONVERT_ERROR)
-		}
-	}
-
-	/// Values.
-	pub mod value {
-		use super::*;
-
-		/// Value "ERC721Metadata".
-		pub const ERC721_METADATA: &[u8] = b"ERC721Metadata";
-
-		/// Value for [`ERC721_METADATA`].
-		pub fn erc721() -> up_data_structs::PropertyValue {
-			property_value_from_bytes(ERC721_METADATA).expect(EXPECT_CONVERT_ERROR)
 		}
 	}
 

--- a/pallets/common/src/lib.rs
+++ b/pallets/common/src/lib.rs
@@ -71,6 +71,7 @@
 	Collection,
 	RpcCollection,
 	CollectionFlags,
+	RpcCollectionFlags,
 	CollectionId,
 	CreateItemData,
 	MAX_TOKEN_PREFIX_LENGTH,
@@ -824,7 +825,11 @@
 			token_property_permissions,
 			properties,
 			read_only: flags.external,
-			foreign: flags.foreign,
+
+			flags: RpcCollectionFlags {
+				foreign: flags.foreign,
+				erc721metadata: flags.erc721metadata,
+			},
 		})
 	}
 }

binary blob — no preview

--- a/pallets/fungible/src/lib.rs
+++ b/pallets/fungible/src/lib.rs
@@ -212,8 +212,9 @@
 		owner: T::CrossAccountId,
 		payer: T::CrossAccountId,
 		data: CreateCollectionData<T::AccountId>,
+		flags: CollectionFlags,
 	) -> Result<CollectionId, DispatchError> {
-		<PalletCommon<T>>::init_collection(owner, payer, data, CollectionFlags::default())
+		<PalletCommon<T>>::init_collection(owner, payer, data, flags)
 	}
 
 	/// Initializes the collection with ForeignCollection flag. Returns [CollectionId] on success, [DispatchError] otherwise.

binary blob — no preview

--- a/pallets/fungible/src/stubs/UniqueFungible.sol
+++ b/pallets/fungible/src/stubs/UniqueFungible.sol
@@ -18,7 +18,7 @@
 }
 
 /// @title A contract that allows you to work with collections.
-/// @dev the ERC-165 identifier for this interface is 0x3e1e8083
+/// @dev the ERC-165 identifier for this interface is 0x62e22290
 contract Collection is Dummy, ERC165 {
 	/// Set collection property.
 	///
@@ -296,9 +296,9 @@
 	///
 	/// @dev Owner can be changed only by current owner
 	/// @param newOwner new owner account
-	/// @dev EVM selector for this function is: 0x13af4035,
-	///  or in textual repr: setOwner(address)
-	function setOwner(address newOwner) public {
+	/// @dev EVM selector for this function is: 0x4f53e226,
+	///  or in textual repr: changeCollectionOwner(address)
+	function changeCollectionOwner(address newOwner) public {
 		require(false, stub_error);
 		newOwner;
 		dummy = 0;

--- a/pallets/nonfungible/src/benchmarking.rs
+++ b/pallets/nonfungible/src/benchmarking.rs
@@ -55,7 +55,7 @@
 		owner,
 		CollectionMode::NFT,
 		|owner: T::CrossAccountId, data| {
-			<Pallet<T>>::init_collection(owner.clone(), owner, data, true)
+			<Pallet<T>>::init_collection(owner.clone(), owner, data, Default::default())
 		},
 		NonfungibleHandle::cast,
 	)

--- a/pallets/nonfungible/src/erc.rs
+++ b/pallets/nonfungible/src/erc.rs
@@ -33,16 +33,12 @@
 use pallet_evm_coder_substrate::dispatch_to_evm;
 use sp_std::vec::Vec;
 use pallet_common::{
-	erc::{
-		CommonEvmHandler, PrecompileResult, CollectionCall,
-		static_property::{key, value as property_value},
-	},
+	erc::{CommonEvmHandler, PrecompileResult, CollectionCall, static_property::key},
 	CollectionHandle, CollectionPropertyPermissions,
 };
 use pallet_evm::{account::CrossAccountId, PrecompileHandle};
 use pallet_evm_coder_substrate::call;
 use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};
-use alloc::string::ToString;
 
 use crate::{
 	AccountBalance, Config, CreateItemData, NonfungibleHandle, Pallet, TokenData, TokensMinted,
@@ -194,7 +190,7 @@
 }
 
 #[derive(ToLog)]
-pub enum ERC721MintableEvents {
+pub enum ERC721UniqueMintableEvents {
 	#[allow(dead_code)]
 	MintingFinished {},
 }
@@ -204,15 +200,17 @@
 #[solidity_interface(name = ERC721Metadata, expect_selector = 0x5b5e139f)]
 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>())
+	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`
+	#[solidity(hide, rename_selector = "name")]
+	fn name_proxy(&self) -> Result<string> {
+		self.name()
 	}
 
 	/// @notice An abbreviated name for NFTs in this contract
-	fn symbol(&self) -> Result<string> {
-		Ok(string::from_utf8_lossy(&self.token_prefix).into())
+	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`
+	#[solidity(hide, rename_selector = "symbol")]
+	fn symbol_proxy(&self) -> Result<string> {
+		self.symbol()
 	}
 
 	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
@@ -228,35 +226,38 @@
 	fn token_uri(&self, token_id: uint256) -> Result<string> {
 		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 
-		if let Ok(url) = get_token_property(self, token_id_u32, &key::url()) {
-			if !url.is_empty() {
-				return Ok(url);
+		match get_token_property(self, token_id_u32, &key::url()).as_deref() {
+			Err(_) | Ok("") => (),
+			Ok(url) => {
+				return Ok(url.into());
 			}
-		} else if !is_erc721_metadata_compatible::<T>(self.id) {
-			return Err("tokenURI not set".into());
-		}
+		};
 
-		if let Some(base_uri) =
+		let base_uri =
 			pallet_common::Pallet::<T>::get_collection_property(self.id, &key::base_uri())
-		{
-			if !base_uri.is_empty() {
-				let base_uri = string::from_utf8(base_uri.into_inner()).map_err(|e| {
+				.map(BoundedVec::into_inner)
+				.map(string::from_utf8)
+				.transpose()
+				.map_err(|e| {
 					Error::Revert(alloc::format!(
 						"Can not convert value \"baseURI\" to string with error \"{}\"",
 						e
 					))
 				})?;
-				if let Ok(suffix) = get_token_property(self, token_id_u32, &key::suffix()) {
-					if !suffix.is_empty() {
-						return Ok(base_uri + suffix.as_str());
-					}
-				}
 
-				return Ok(base_uri + token_id.to_string().as_str());
+		let base_uri = match base_uri.as_deref() {
+			None | Some("") => {
+				return Ok("".into());
 			}
-		}
+			Some(base_uri) => base_uri.into(),
+		};
 
-		Ok("".into())
+		Ok(
+			match get_token_property(self, token_id_u32, &key::suffix()).as_deref() {
+				Err(_) | Ok("") => base_uri,
+				Ok(suffix) => base_uri + suffix,
+			},
+		)
 	}
 }
 
@@ -427,19 +428,33 @@
 }
 
 /// @title ERC721 minting logic.
-#[solidity_interface(name = ERC721Mintable, events(ERC721MintableEvents))]
+#[solidity_interface(name = ERC721UniqueMintable, events(ERC721UniqueMintableEvents))]
 impl<T: Config> NonfungibleHandle<T> {
 	fn minting_finished(&self) -> Result<bool> {
 		Ok(false)
 	}
 
 	/// @notice Function to mint token.
+	/// @param to The new owner
+	/// @return uint256 The id of the newly minted token
+	#[weight(<SelfWeightOf<T>>::create_item())]
+	fn mint(&mut self, caller: caller, to: address) -> Result<uint256> {
+		let token_id: uint256 = <TokensMinted<T>>::get(self.id)
+			.checked_add(1)
+			.ok_or("item id overflow")?
+			.into();
+		self.mint_check_id(caller, to, token_id)?;
+		Ok(token_id)
+	}
+
+	/// @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
+	#[solidity(hide, rename_selector = "mint")]
 	#[weight(<SelfWeightOf<T>>::create_item())]
-	fn mint(&mut self, caller: caller, to: address, token_id: uint256) -> Result<bool> {
+	fn mint_check_id(&mut self, caller: caller, to: address, token_id: uint256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let token_id: u32 = token_id.try_into()?;
@@ -470,14 +485,34 @@
 	}
 
 	/// @notice Function to mint token with the given tokenUri.
+	/// @param to The new owner
+	/// @param tokenUri Token URI that would be stored in the NFT properties
+	/// @return uint256 The id of the newly minted token
+	#[solidity(rename_selector = "mintWithTokenURI")]
+	#[weight(<SelfWeightOf<T>>::create_item())]
+	fn mint_with_token_uri(
+		&mut self,
+		caller: caller,
+		to: address,
+		token_uri: string,
+	) -> Result<uint256> {
+		let token_id: uint256 = <TokensMinted<T>>::get(self.id)
+			.checked_add(1)
+			.ok_or("item id overflow")?
+			.into();
+		self.mint_with_token_uri_check_id(caller, to, token_id, token_uri)?;
+		Ok(token_id)
+	}
+
+	/// @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")]
+	#[solidity(hide, rename_selector = "mintWithTokenURI")]
 	#[weight(<SelfWeightOf<T>>::create_item())]
-	fn mint_with_token_uri(
+	fn mint_with_token_uri_check_id(
 		&mut self,
 		caller: caller,
 		to: address,
@@ -550,17 +585,6 @@
 	Err("Property tokenURI not found".into())
 }
 
-fn is_erc721_metadata_compatible<T: Config>(collection_id: CollectionId) -> bool {
-	if let Some(shema_name) =
-		pallet_common::Pallet::<T>::get_collection_property(collection_id, &key::schema_name())
-	{
-		let shema_name = shema_name.into_inner();
-		shema_name == property_value::ERC721_METADATA
-	} else {
-		false
-	}
-}
-
 fn get_token_permission<T: Config>(
 	collection_id: CollectionId,
 	key: &PropertyKey,
@@ -575,21 +599,23 @@
 			Error::Revert(alloc::format!("No permission for key {}", key))
 		})?;
 	Ok(a)
-}
-
-fn has_token_permission<T: Config>(collection_id: CollectionId, key: &PropertyKey) -> bool {
-	if let Ok(token_property_permissions) =
-		CollectionPropertyPermissions::<T>::try_get(collection_id)
-	{
-		return token_property_permissions.contains_key(key);
-	}
-
-	false
 }
 
 /// @title Unique extensions for ERC721.
 #[solidity_interface(name = ERC721UniqueExtensions)]
 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())
+	}
+
 	/// @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.
@@ -642,6 +668,7 @@
 	///  should be obtained with `nextTokenId` method
 	/// @param to The new owner
 	/// @param tokenIds IDs of the minted NFTs
+	// #[solidity(hide)]
 	#[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);
@@ -678,7 +705,7 @@
 	///  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")]
+	#[solidity(/*hide,*/ rename_selector = "mintBulkWithTokenURI")]
 	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32))]
 	fn mint_bulk_with_token_uri(
 		&mut self,
@@ -731,11 +758,11 @@
 	name = UniqueNFT,
 	is(
 		ERC721,
-		ERC721Metadata,
 		ERC721Enumerable,
 		ERC721UniqueExtensions,
-		ERC721Mintable,
+		ERC721UniqueMintable,
 		ERC721Burnable,
+		ERC721Metadata(if(this.flags.erc721metadata)),
 		Collection(via(common_mut returns CollectionHandle<T>)),
 		TokenProperties,
 	)

--- a/pallets/nonfungible/src/lib.rs
+++ b/pallets/nonfungible/src/lib.rs
@@ -295,6 +295,7 @@
 		&mut self.0
 	}
 }
+
 impl<T: Config> WithRecorder<T> for NonfungibleHandle<T> {
 	fn recorder(&self) -> &SubstrateRecorder<T> {
 		self.0.recorder()
@@ -407,17 +408,9 @@
 		owner: T::CrossAccountId,
 		payer: T::CrossAccountId,
 		data: CreateCollectionData<T::AccountId>,
-		is_external: bool,
+		flags: CollectionFlags,
 	) -> Result<CollectionId, DispatchError> {
-		<PalletCommon<T>>::init_collection(
-			owner,
-			payer,
-			data,
-			CollectionFlags {
-				external: is_external,
-				..Default::default()
-			},
-		)
+		<PalletCommon<T>>::init_collection(owner, payer, data, flags)
 	}
 
 	/// Destroy NFT collection

binary blob — no preview

--- a/pallets/nonfungible/src/stubs/UniqueNFT.sol
+++ b/pallets/nonfungible/src/stubs/UniqueNFT.sol
@@ -91,7 +91,7 @@
 }
 
 /// @title A contract that allows you to work with collections.
-/// @dev the ERC-165 identifier for this interface is 0x3e1e8083
+/// @dev the ERC-165 identifier for this interface is 0x62e22290
 contract Collection is Dummy, ERC165 {
 	/// Set collection property.
 	///
@@ -369,9 +369,9 @@
 	///
 	/// @dev Owner can be changed only by current owner
 	/// @param newOwner new owner account
-	/// @dev EVM selector for this function is: 0x13af4035,
-	///  or in textual repr: setOwner(address)
-	function setOwner(address newOwner) public {
+	/// @dev EVM selector for this function is: 0x4f53e226,
+	///  or in textual repr: changeCollectionOwner(address)
+	function changeCollectionOwner(address newOwner) public {
 		require(false, stub_error);
 		newOwner;
 		dummy = 0;
@@ -384,6 +384,49 @@
 	uint256 field_1;
 }
 
+/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension
+/// @dev See https://eips.ethereum.org/EIPS/eip-721
+/// @dev the ERC-165 identifier for this interface is 0x5b5e139f
+contract ERC721Metadata is Dummy, ERC165 {
+	// /// @notice A descriptive name for a collection of NFTs in this contract
+	// /// @dev real implementation of this function lies in `ERC721UniqueExtensions`
+	// /// @dev EVM selector for this function is: 0x06fdde03,
+	// ///  or in textual repr: name()
+	// function name() public view returns (string memory) {
+	// 	require(false, stub_error);
+	// 	dummy;
+	// 	return "";
+	// }
+
+	// /// @notice An abbreviated name for NFTs in this contract
+	// /// @dev real implementation of this function lies in `ERC721UniqueExtensions`
+	// /// @dev EVM selector for this function is: 0x95d89b41,
+	// ///  or in textual repr: symbol()
+	// function symbol() public view returns (string memory) {
+	// 	require(false, stub_error);
+	// 	dummy;
+	// 	return "";
+	// }
+
+	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
+	///
+	/// @dev If the token has a `url` property and it is not empty, it is returned.
+	///  Else If the collection does not have a property with key `schemaName` or its value is not equal to `ERC721Metadata`, it return an error `tokenURI not set`.
+	///  If the collection property `baseURI` is empty or absent, return "" (empty string)
+	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix
+	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).
+	///
+	/// @return token's const_metadata
+	/// @dev EVM selector for this function is: 0xc87b56dd,
+	///  or in textual repr: tokenURI(uint256)
+	function tokenURI(uint256 tokenId) public view returns (string memory) {
+		require(false, stub_error);
+		tokenId;
+		dummy;
+		return "";
+	}
+}
+
 /// @title ERC721 Token that can be irreversibly burned (destroyed).
 /// @dev the ERC-165 identifier for this interface is 0x42966c68
 contract ERC721Burnable is Dummy, ERC165 {
@@ -401,13 +444,13 @@
 }
 
 /// @dev inlined interface
-contract ERC721MintableEvents {
+contract ERC721UniqueMintableEvents {
 	event MintingFinished();
 }
 
 /// @title ERC721 minting logic.
-/// @dev the ERC-165 identifier for this interface is 0x68ccfe89
-contract ERC721Mintable is Dummy, ERC165, ERC721MintableEvents {
+/// @dev the ERC-165 identifier for this interface is 0x476ff149
+contract ERC721UniqueMintable is Dummy, ERC165, ERC721UniqueMintableEvents {
 	/// @dev EVM selector for this function is: 0x05d2035b,
 	///  or in textual repr: mintingFinished()
 	function mintingFinished() public view returns (bool) {
@@ -417,41 +460,63 @@
 	}
 
 	/// @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
-	/// @dev EVM selector for this function is: 0x40c10f19,
-	///  or in textual repr: mint(address,uint256)
-	function mint(address to, uint256 tokenId) public returns (bool) {
+	/// @return uint256 The id of the newly minted token
+	/// @dev EVM selector for this function is: 0x6a627842,
+	///  or in textual repr: mint(address)
+	function mint(address to) public returns (uint256) {
 		require(false, stub_error);
 		to;
-		tokenId;
 		dummy = 0;
-		return false;
+		return 0;
 	}
 
+	// /// @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
+	// /// @dev EVM selector for this function is: 0x40c10f19,
+	// ///  or in textual repr: mint(address,uint256)
+	// function mint(address to, uint256 tokenId) public returns (bool) {
+	// 	require(false, stub_error);
+	// 	to;
+	// 	tokenId;
+	// 	dummy = 0;
+	// 	return false;
+	// }
+
 	/// @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
-	/// @dev EVM selector for this function is: 0x50bb4e7f,
-	///  or in textual repr: mintWithTokenURI(address,uint256,string)
-	function mintWithTokenURI(
-		address to,
-		uint256 tokenId,
-		string memory tokenUri
-	) public returns (bool) {
+	/// @return uint256 The id of the newly minted token
+	/// @dev EVM selector for this function is: 0x45c17782,
+	///  or in textual repr: mintWithTokenURI(address,string)
+	function mintWithTokenURI(address to, string memory tokenUri) public returns (uint256) {
 		require(false, stub_error);
 		to;
-		tokenId;
 		tokenUri;
 		dummy = 0;
-		return false;
+		return 0;
 	}
 
+	// /// @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
+	// /// @dev EVM selector for this function is: 0x50bb4e7f,
+	// ///  or in textual repr: mintWithTokenURI(address,uint256,string)
+	// function mintWithTokenURI(address to, uint256 tokenId, string memory tokenUri) public returns (bool) {
+	// 	require(false, stub_error);
+	// 	to;
+	// 	tokenId;
+	// 	tokenUri;
+	// 	dummy = 0;
+	// 	return false;
+	// }
+
 	/// @dev Not implemented
 	/// @dev EVM selector for this function is: 0x7d64bcb4,
 	///  or in textual repr: finishMinting()
@@ -463,8 +528,26 @@
 }
 
 /// @title Unique extensions for ERC721.
-/// @dev the ERC-165 identifier for this interface is 0xd74d154f
+/// @dev the ERC-165 identifier for this interface is 0x4468500d
 contract ERC721UniqueExtensions is Dummy, ERC165 {
+	/// @notice A descriptive name for a collection of NFTs in this contract
+	/// @dev EVM selector for this function is: 0x06fdde03,
+	///  or in textual repr: name()
+	function name() public view returns (string memory) {
+		require(false, stub_error);
+		dummy;
+		return "";
+	}
+
+	/// @notice An abbreviated name for NFTs in this contract
+	/// @dev EVM selector for this function is: 0x95d89b41,
+	///  or in textual repr: symbol()
+	function symbol() public view returns (string memory) {
+		require(false, stub_error);
+		dummy;
+		return "";
+	}
+
 	/// @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.
@@ -525,7 +608,7 @@
 	/// @param tokens array of pairs of token ID and token URI for minted tokens
 	/// @dev EVM selector for this function is: 0x36543006,
 	///  or in textual repr: mintBulkWithTokenURI(address,(uint256,string)[])
-	function mintBulkWithTokenURI(address to, Tuple8[] memory tokens) public returns (bool) {
+	function mintBulkWithTokenURI(address to, Tuple6[] memory tokens) public returns (bool) {
 		require(false, stub_error);
 		to;
 		tokens;
@@ -535,7 +618,7 @@
 }
 
 /// @dev anonymous struct
-struct Tuple8 {
+struct Tuple6 {
 	uint256 field_0;
 	string field_1;
 }
@@ -579,48 +662,7 @@
 		return 0;
 	}
 }
-
-/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension
-/// @dev See https://eips.ethereum.org/EIPS/eip-721
-/// @dev the ERC-165 identifier for this interface is 0x5b5e139f
-contract ERC721Metadata is Dummy, ERC165 {
-	/// @notice A descriptive name for a collection of NFTs in this contract
-	/// @dev EVM selector for this function is: 0x06fdde03,
-	///  or in textual repr: name()
-	function name() public view returns (string memory) {
-		require(false, stub_error);
-		dummy;
-		return "";
-	}
-
-	/// @notice An abbreviated name for NFTs in this contract
-	/// @dev EVM selector for this function is: 0x95d89b41,
-	///  or in textual repr: symbol()
-	function symbol() public view returns (string memory) {
-		require(false, stub_error);
-		dummy;
-		return "";
-	}
 
-	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
-	///
-	/// @dev If the token has a `url` property and it is not empty, it is returned.
-	///  Else If the collection does not have a property with key `schemaName` or its value is not equal to `ERC721Metadata`, it return an error `tokenURI not set`.
-	///  If the collection property `baseURI` is empty or absent, return "" (empty string)
-	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix
-	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).
-	///
-	/// @return token's const_metadata
-	/// @dev EVM selector for this function is: 0xc87b56dd,
-	///  or in textual repr: tokenURI(uint256)
-	function tokenURI(uint256 tokenId) public view returns (string memory) {
-		require(false, stub_error);
-		tokenId;
-		dummy;
-		return "";
-	}
-}
-
 /// @dev inlined interface
 contract ERC721Events {
 	event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
@@ -766,11 +808,11 @@
 	Dummy,
 	ERC165,
 	ERC721,
-	ERC721Metadata,
 	ERC721Enumerable,
 	ERC721UniqueExtensions,
-	ERC721Mintable,
+	ERC721UniqueMintable,
 	ERC721Burnable,
+	ERC721Metadata,
 	Collection,
 	TokenProperties
 {}

--- a/pallets/proxy-rmrk-core/src/lib.rs
+++ b/pallets/proxy-rmrk-core/src/lib.rs
@@ -1448,7 +1448,15 @@
 		data: CreateCollectionData<T::AccountId>,
 		properties: impl Iterator<Item = Property>,
 	) -> Result<CollectionId, DispatchError> {
-		let collection_id = <PalletNft<T>>::init_collection(sender.clone(), sender, data, true);
+		let collection_id = <PalletNft<T>>::init_collection(
+			sender.clone(),
+			sender,
+			data,
+			up_data_structs::CollectionFlags {
+				external: true,
+				..Default::default()
+			},
+		);
 
 		if let Err(DispatchError::Arithmetic(_)) = &collection_id {
 			return Err(<Error<T>>::NoAvailableCollectionId.into());

--- a/pallets/proxy-rmrk-equip/src/lib.rs
+++ b/pallets/proxy-rmrk-equip/src/lib.rs
@@ -254,7 +254,10 @@
 				cross_sender.clone(),
 				cross_sender.clone(),
 				data,
-				true,
+				up_data_structs::CollectionFlags {
+					external: true,
+					..Default::default()
+				},
 			);
 
 			if let Err(DispatchError::Arithmetic(_)) = &collection_id_res {

--- a/pallets/refungible/src/erc.rs
+++ b/pallets/refungible/src/erc.rs
@@ -21,19 +21,15 @@
 
 extern crate alloc;
 
-use alloc::string::ToString;
 use core::{
 	char::{REPLACEMENT_CHARACTER, decode_utf16},
 	convert::TryInto,
 };
 use evm_coder::{ToLog, execution::*, generate_stubgen, solidity, solidity_interface, types::*, weight};
-use frame_support::BoundedBTreeMap;
+use frame_support::{BoundedBTreeMap, BoundedVec};
 use pallet_common::{
 	CollectionHandle, CollectionPropertyPermissions,
-	erc::{
-		CommonEvmHandler, CollectionCall,
-		static_property::{key, value as property_value},
-	},
+	erc::{CommonEvmHandler, CollectionCall, static_property::key},
 };
 use pallet_evm::{account::CrossAccountId, PrecompileHandle};
 use pallet_evm_coder_substrate::{call, dispatch_to_evm};
@@ -191,7 +187,7 @@
 }
 
 #[derive(ToLog)]
-pub enum ERC721MintableEvents {
+pub enum ERC721UniqueMintableEvents {
 	/// @dev Not supported
 	#[allow(dead_code)]
 	MintingFinished {},
@@ -199,16 +195,18 @@
 
 #[solidity_interface(name = ERC721Metadata)]
 impl<T: Config> RefungibleHandle<T> {
-	/// @notice A descriptive name for a collection of RFTs 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 A descriptive name for a collection of NFTs in this contract
+	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`
+	#[solidity(hide, rename_selector = "name")]
+	fn name_proxy(&self) -> Result<string> {
+		self.name()
 	}
 
-	/// @notice An abbreviated name for RFTs in this contract
-	fn symbol(&self) -> Result<string> {
-		Ok(string::from_utf8_lossy(&self.token_prefix).into())
+	/// @notice An abbreviated name for NFTs in this contract
+	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`
+	#[solidity(hide, rename_selector = "symbol")]
+	fn symbol_proxy(&self) -> Result<string> {
+		self.symbol()
 	}
 
 	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
@@ -224,35 +222,38 @@
 	fn token_uri(&self, token_id: uint256) -> Result<string> {
 		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 
-		if let Ok(url) = get_token_property(self, token_id_u32, &key::url()) {
-			if !url.is_empty() {
-				return Ok(url);
+		match get_token_property(self, token_id_u32, &key::url()).as_deref() {
+			Err(_) | Ok("") => (),
+			Ok(url) => {
+				return Ok(url.into());
 			}
-		} else if !is_erc721_metadata_compatible::<T>(self.id) {
-			return Err("tokenURI not set".into());
-		}
+		};
 
-		if let Some(base_uri) =
+		let base_uri =
 			pallet_common::Pallet::<T>::get_collection_property(self.id, &key::base_uri())
-		{
-			if !base_uri.is_empty() {
-				let base_uri = string::from_utf8(base_uri.into_inner()).map_err(|e| {
+				.map(BoundedVec::into_inner)
+				.map(string::from_utf8)
+				.transpose()
+				.map_err(|e| {
 					Error::Revert(alloc::format!(
 						"Can not convert value \"baseURI\" to string with error \"{}\"",
 						e
 					))
 				})?;
-				if let Ok(suffix) = get_token_property(self, token_id_u32, &key::suffix()) {
-					if !suffix.is_empty() {
-						return Ok(base_uri + suffix.as_str());
-					}
-				}
 
-				return Ok(base_uri + token_id.to_string().as_str());
+		let base_uri = match base_uri.as_deref() {
+			None | Some("") => {
+				return Ok("".into());
 			}
-		}
+			Some(base_uri) => base_uri.into(),
+		};
 
-		Ok("".into())
+		Ok(
+			match get_token_property(self, token_id_u32, &key::suffix()).as_deref() {
+				Err(_) | Ok("") => base_uri,
+				Ok(suffix) => base_uri + suffix,
+			},
+		)
 	}
 }
 
@@ -448,19 +449,33 @@
 }
 
 /// @title ERC721 minting logic.
-#[solidity_interface(name = ERC721Mintable, events(ERC721MintableEvents))]
+#[solidity_interface(name = ERC721UniqueMintable, events(ERC721UniqueMintableEvents))]
 impl<T: Config> RefungibleHandle<T> {
 	fn minting_finished(&self) -> Result<bool> {
 		Ok(false)
 	}
 
 	/// @notice Function to mint token.
+	/// @param to The new owner
+	/// @return uint256 The id of the newly minted token
+	#[weight(<SelfWeightOf<T>>::create_item())]
+	fn mint(&mut self, caller: caller, to: address) -> Result<uint256> {
+		let token_id: uint256 = <TokensMinted<T>>::get(self.id)
+			.checked_add(1)
+			.ok_or("item id overflow")?
+			.into();
+		self.mint_check_id(caller, to, token_id)?;
+		Ok(token_id)
+	}
+
+	/// @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 RFT
+	#[solidity(hide, rename_selector = "mint")]
 	#[weight(<SelfWeightOf<T>>::create_item())]
-	fn mint(&mut self, caller: caller, to: address, token_id: uint256) -> Result<bool> {
+	fn mint_check_id(&mut self, caller: caller, to: address, token_id: uint256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let token_id: u32 = token_id.try_into()?;
@@ -496,14 +511,34 @@
 	}
 
 	/// @notice Function to mint token with the given tokenUri.
+	/// @param to The new owner
+	/// @param tokenUri Token URI that would be stored in the NFT properties
+	/// @return uint256 The id of the newly minted token
+	#[solidity(rename_selector = "mintWithTokenURI")]
+	#[weight(<SelfWeightOf<T>>::create_item())]
+	fn mint_with_token_uri(
+		&mut self,
+		caller: caller,
+		to: address,
+		token_uri: string,
+	) -> Result<uint256> {
+		let token_id: uint256 = <TokensMinted<T>>::get(self.id)
+			.checked_add(1)
+			.ok_or("item id overflow")?
+			.into();
+		self.mint_with_token_uri_check_id(caller, to, token_id, token_uri)?;
+		Ok(token_id)
+	}
+
+	/// @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 RFT
 	/// @param tokenUri Token URI that would be stored in the RFT properties
-	#[solidity(rename_selector = "mintWithTokenURI")]
+	#[solidity(hide, rename_selector = "mintWithTokenURI")]
 	#[weight(<SelfWeightOf<T>>::create_item())]
-	fn mint_with_token_uri(
+	fn mint_with_token_uri_check_id(
 		&mut self,
 		caller: caller,
 		to: address,
@@ -578,17 +613,6 @@
 	Err("Property tokenURI not found".into())
 }
 
-fn is_erc721_metadata_compatible<T: Config>(collection_id: CollectionId) -> bool {
-	if let Some(shema_name) =
-		pallet_common::Pallet::<T>::get_collection_property(collection_id, &key::schema_name())
-	{
-		let shema_name = shema_name.into_inner();
-		shema_name == property_value::ERC721_METADATA
-	} else {
-		false
-	}
-}
-
 fn get_token_permission<T: Config>(
 	collection_id: CollectionId,
 	key: &PropertyKey,
@@ -608,6 +632,18 @@
 /// @title Unique extensions for ERC721.
 #[solidity_interface(name = ERC721UniqueExtensions)]
 impl<T: Config> RefungibleHandle<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())
+	}
+
 	/// @notice Transfer ownership of an RFT
 	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`
 	///  is the zero address. Throws if `tokenId` is not a valid RFT.
@@ -669,6 +705,7 @@
 	///  should be obtained with `nextTokenId` method
 	/// @param to The new owner
 	/// @param tokenIds IDs of the minted RFTs
+	// #[solidity(hide)]
 	#[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);
@@ -711,7 +748,7 @@
 	///  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")]
+	#[solidity(/*hide,*/ rename_selector = "mintBulkWithTokenURI")]
 	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32))]
 	fn mint_bulk_with_token_uri(
 		&mut self,
@@ -780,11 +817,11 @@
 	name = UniqueRefungible,
 	is(
 		ERC721,
-		ERC721Metadata,
 		ERC721Enumerable,
 		ERC721UniqueExtensions,
-		ERC721Mintable,
+		ERC721UniqueMintable,
 		ERC721Burnable,
+		ERC721Metadata(if(this.flags.erc721metadata)),
 		Collection(via(common_mut returns CollectionHandle<T>)),
 		TokenProperties,
 	)

--- a/pallets/refungible/src/lib.rs
+++ b/pallets/refungible/src/lib.rs
@@ -92,9 +92,11 @@
 
 use codec::{Encode, Decode, MaxEncodedLen};
 use core::ops::Deref;
+use derivative::Derivative;
 use evm_coder::ToLog;
 use frame_support::{
-	BoundedVec, ensure, fail, storage::with_transaction, transactional, pallet_prelude::ConstU32,
+	BoundedBTreeMap, BoundedVec, ensure, fail, storage::with_transaction, transactional,
+	pallet_prelude::ConstU32,
 };
 use pallet_evm::{account::CrossAccountId, Pallet as PalletEvm};
 use pallet_evm_coder_substrate::WithRecorder;
@@ -113,8 +115,6 @@
 	MAX_REFUNGIBLE_PIECES, Property, PropertyKey, PropertyKeyPermission, PropertyPermission,
 	PropertyScope, PropertyValue, TokenId, TrySetProperty,
 };
-use frame_support::BoundedBTreeMap;
-use derivative::Derivative;
 
 pub use pallet::*;
 #[cfg(feature = "runtime-benchmarks")]
@@ -371,8 +371,9 @@
 		owner: T::CrossAccountId,
 		payer: T::CrossAccountId,
 		data: CreateCollectionData<T::AccountId>,
+		flags: CollectionFlags,
 	) -> Result<CollectionId, DispatchError> {
-		<PalletCommon<T>>::init_collection(owner, payer, data, CollectionFlags::default())
+		<PalletCommon<T>>::init_collection(owner, payer, data, flags)
 	}
 
 	/// Destroy RFT collection

binary blob — no preview

--- a/pallets/refungible/src/stubs/UniqueRefungible.sol
+++ b/pallets/refungible/src/stubs/UniqueRefungible.sol
@@ -91,7 +91,7 @@
 }
 
 /// @title A contract that allows you to work with collections.
-/// @dev the ERC-165 identifier for this interface is 0x3e1e8083
+/// @dev the ERC-165 identifier for this interface is 0x62e22290
 contract Collection is Dummy, ERC165 {
 	/// Set collection property.
 	///
@@ -369,9 +369,9 @@
 	///
 	/// @dev Owner can be changed only by current owner
 	/// @param newOwner new owner account
-	/// @dev EVM selector for this function is: 0x13af4035,
-	///  or in textual repr: setOwner(address)
-	function setOwner(address newOwner) public {
+	/// @dev EVM selector for this function is: 0x4f53e226,
+	///  or in textual repr: changeCollectionOwner(address)
+	function changeCollectionOwner(address newOwner) public {
 		require(false, stub_error);
 		newOwner;
 		dummy = 0;
@@ -384,6 +384,47 @@
 	uint256 field_1;
 }
 
+/// @dev the ERC-165 identifier for this interface is 0x5b5e139f
+contract ERC721Metadata is Dummy, ERC165 {
+	// /// @notice A descriptive name for a collection of NFTs in this contract
+	// /// @dev real implementation of this function lies in `ERC721UniqueExtensions`
+	// /// @dev EVM selector for this function is: 0x06fdde03,
+	// ///  or in textual repr: name()
+	// function name() public view returns (string memory) {
+	// 	require(false, stub_error);
+	// 	dummy;
+	// 	return "";
+	// }
+
+	// /// @notice An abbreviated name for NFTs in this contract
+	// /// @dev real implementation of this function lies in `ERC721UniqueExtensions`
+	// /// @dev EVM selector for this function is: 0x95d89b41,
+	// ///  or in textual repr: symbol()
+	// function symbol() public view returns (string memory) {
+	// 	require(false, stub_error);
+	// 	dummy;
+	// 	return "";
+	// }
+
+	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
+	///
+	/// @dev If the token has a `url` property and it is not empty, it is returned.
+	///  Else If the collection does not have a property with key `schemaName` or its value is not equal to `ERC721Metadata`, it return an error `tokenURI not set`.
+	///  If the collection property `baseURI` is empty or absent, return "" (empty string)
+	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix
+	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).
+	///
+	/// @return token's const_metadata
+	/// @dev EVM selector for this function is: 0xc87b56dd,
+	///  or in textual repr: tokenURI(uint256)
+	function tokenURI(uint256 tokenId) public view returns (string memory) {
+		require(false, stub_error);
+		tokenId;
+		dummy;
+		return "";
+	}
+}
+
 /// @title ERC721 Token that can be irreversibly burned (destroyed).
 /// @dev the ERC-165 identifier for this interface is 0x42966c68
 contract ERC721Burnable is Dummy, ERC165 {
@@ -401,13 +442,13 @@
 }
 
 /// @dev inlined interface
-contract ERC721MintableEvents {
+contract ERC721UniqueMintableEvents {
 	event MintingFinished();
 }
 
 /// @title ERC721 minting logic.
-/// @dev the ERC-165 identifier for this interface is 0x68ccfe89
-contract ERC721Mintable is Dummy, ERC165, ERC721MintableEvents {
+/// @dev the ERC-165 identifier for this interface is 0x476ff149
+contract ERC721UniqueMintable is Dummy, ERC165, ERC721UniqueMintableEvents {
 	/// @dev EVM selector for this function is: 0x05d2035b,
 	///  or in textual repr: mintingFinished()
 	function mintingFinished() public view returns (bool) {
@@ -417,41 +458,63 @@
 	}
 
 	/// @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 RFT
-	/// @dev EVM selector for this function is: 0x40c10f19,
-	///  or in textual repr: mint(address,uint256)
-	function mint(address to, uint256 tokenId) public returns (bool) {
+	/// @return uint256 The id of the newly minted token
+	/// @dev EVM selector for this function is: 0x6a627842,
+	///  or in textual repr: mint(address)
+	function mint(address to) public returns (uint256) {
 		require(false, stub_error);
 		to;
-		tokenId;
 		dummy = 0;
-		return false;
+		return 0;
 	}
 
+	// /// @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 RFT
+	// /// @dev EVM selector for this function is: 0x40c10f19,
+	// ///  or in textual repr: mint(address,uint256)
+	// function mint(address to, uint256 tokenId) public returns (bool) {
+	// 	require(false, stub_error);
+	// 	to;
+	// 	tokenId;
+	// 	dummy = 0;
+	// 	return false;
+	// }
+
 	/// @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 RFT
-	/// @param tokenUri Token URI that would be stored in the RFT properties
-	/// @dev EVM selector for this function is: 0x50bb4e7f,
-	///  or in textual repr: mintWithTokenURI(address,uint256,string)
-	function mintWithTokenURI(
-		address to,
-		uint256 tokenId,
-		string memory tokenUri
-	) public returns (bool) {
+	/// @param tokenUri Token URI that would be stored in the NFT properties
+	/// @return uint256 The id of the newly minted token
+	/// @dev EVM selector for this function is: 0x45c17782,
+	///  or in textual repr: mintWithTokenURI(address,string)
+	function mintWithTokenURI(address to, string memory tokenUri) public returns (uint256) {
 		require(false, stub_error);
 		to;
-		tokenId;
 		tokenUri;
 		dummy = 0;
-		return false;
+		return 0;
 	}
 
+	// /// @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 RFT
+	// /// @param tokenUri Token URI that would be stored in the RFT properties
+	// /// @dev EVM selector for this function is: 0x50bb4e7f,
+	// ///  or in textual repr: mintWithTokenURI(address,uint256,string)
+	// function mintWithTokenURI(address to, uint256 tokenId, string memory tokenUri) public returns (bool) {
+	// 	require(false, stub_error);
+	// 	to;
+	// 	tokenId;
+	// 	tokenUri;
+	// 	dummy = 0;
+	// 	return false;
+	// }
+
 	/// @dev Not implemented
 	/// @dev EVM selector for this function is: 0x7d64bcb4,
 	///  or in textual repr: finishMinting()
@@ -463,8 +526,26 @@
 }
 
 /// @title Unique extensions for ERC721.
-/// @dev the ERC-165 identifier for this interface is 0x7c3bef89
+/// @dev the ERC-165 identifier for this interface is 0xef1eaacb
 contract ERC721UniqueExtensions is Dummy, ERC165 {
+	/// @notice A descriptive name for a collection of NFTs in this contract
+	/// @dev EVM selector for this function is: 0x06fdde03,
+	///  or in textual repr: name()
+	function name() public view returns (string memory) {
+		require(false, stub_error);
+		dummy;
+		return "";
+	}
+
+	/// @notice An abbreviated name for NFTs in this contract
+	/// @dev EVM selector for this function is: 0x95d89b41,
+	///  or in textual repr: symbol()
+	function symbol() public view returns (string memory) {
+		require(false, stub_error);
+		dummy;
+		return "";
+	}
+
 	/// @notice Transfer ownership of an RFT
 	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`
 	///  is the zero address. Throws if `tokenId` is not a valid RFT.
@@ -527,7 +608,7 @@
 	/// @param tokens array of pairs of token ID and token URI for minted tokens
 	/// @dev EVM selector for this function is: 0x36543006,
 	///  or in textual repr: mintBulkWithTokenURI(address,(uint256,string)[])
-	function mintBulkWithTokenURI(address to, Tuple8[] memory tokens) public returns (bool) {
+	function mintBulkWithTokenURI(address to, Tuple6[] memory tokens) public returns (bool) {
 		require(false, stub_error);
 		to;
 		tokens;
@@ -549,7 +630,7 @@
 }
 
 /// @dev anonymous struct
-struct Tuple8 {
+struct Tuple6 {
 	uint256 field_0;
 	string field_1;
 }
@@ -591,46 +672,7 @@
 		require(false, stub_error);
 		dummy;
 		return 0;
-	}
-}
-
-/// @dev the ERC-165 identifier for this interface is 0x5b5e139f
-contract ERC721Metadata is Dummy, ERC165 {
-	/// @notice A descriptive name for a collection of RFTs in this contract
-	/// @dev EVM selector for this function is: 0x06fdde03,
-	///  or in textual repr: name()
-	function name() public view returns (string memory) {
-		require(false, stub_error);
-		dummy;
-		return "";
-	}
-
-	/// @notice An abbreviated name for RFTs in this contract
-	/// @dev EVM selector for this function is: 0x95d89b41,
-	///  or in textual repr: symbol()
-	function symbol() public view returns (string memory) {
-		require(false, stub_error);
-		dummy;
-		return "";
 	}
-
-	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
-	///
-	/// @dev If the token has a `url` property and it is not empty, it is returned.
-	///  Else If the collection does not have a property with key `schemaName` or its value is not equal to `ERC721Metadata`, it return an error `tokenURI not set`.
-	///  If the collection property `baseURI` is empty or absent, return "" (empty string)
-	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix
-	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).
-	///
-	/// @return token's const_metadata
-	/// @dev EVM selector for this function is: 0xc87b56dd,
-	///  or in textual repr: tokenURI(uint256)
-	function tokenURI(uint256 tokenId) public view returns (string memory) {
-		require(false, stub_error);
-		tokenId;
-		dummy;
-		return "";
-	}
 }
 
 /// @dev inlined interface
@@ -776,11 +818,11 @@
 	Dummy,
 	ERC165,
 	ERC721,
-	ERC721Metadata,
 	ERC721Enumerable,
 	ERC721UniqueExtensions,
-	ERC721Mintable,
+	ERC721UniqueMintable,
 	ERC721Burnable,
+	ERC721Metadata,
 	Collection,
 	TokenProperties
 {}

binary blob — no preview

--- a/pallets/unique/src/eth/mod.rs
+++ b/pallets/unique/src/eth/mod.rs
@@ -25,14 +25,16 @@
 	dispatch::CollectionDispatch,
 	erc::{
 		CollectionHelpersEvents,
-		static_property::{key, value as property_value},
+		static_property::{key},
 	},
+	Pallet as PalletCommon,
 };
 use pallet_evm_coder_substrate::{dispatch_to_evm, SubstrateRecorder, WithRecorder};
 use pallet_evm::{account::CrossAccountId, OnMethodCall, PrecompileHandle, PrecompileResult};
+use sp_std::vec;
 use up_data_structs::{
 	CollectionName, CollectionDescription, CollectionTokenPrefix, CreateCollectionData,
-	CollectionMode, PropertyValue,
+	CollectionMode, PropertyValue, CollectionFlags,
 };
 
 use crate::{Config, SelfWeightOf, weights::WeightInfo};
@@ -57,13 +59,11 @@
 	name: string,
 	description: string,
 	token_prefix: string,
-	base_uri: string,
 ) -> Result<(
 	T::CrossAccountId,
 	CollectionName,
 	CollectionDescription,
 	CollectionTokenPrefix,
-	PropertyValue,
 )> {
 	let caller = T::CrossAccountId::from_eth(caller);
 	let name = name
@@ -81,75 +81,7 @@
 	let token_prefix = token_prefix.into_bytes().try_into().map_err(|_| {
 		error_field_too_long(stringify!(token_prefix), CollectionTokenPrefix::bound())
 	})?;
-	let base_uri_value = base_uri
-		.into_bytes()
-		.try_into()
-		.map_err(|_| error_field_too_long(stringify!(token_prefix), PropertyValue::bound()))?;
-	Ok((caller, name, description, token_prefix, base_uri_value))
-}
-
-fn make_data<T: Config>(
-	name: CollectionName,
-	mode: CollectionMode,
-	description: CollectionDescription,
-	token_prefix: CollectionTokenPrefix,
-	base_uri_value: PropertyValue,
-	add_properties: bool,
-) -> Result<CreateCollectionData<T::AccountId>> {
-	let mut properties = up_data_structs::CollectionPropertiesVec::default();
-	let mut token_property_permissions =
-		up_data_structs::CollectionPropertiesPermissionsVec::default();
-
-	token_property_permissions
-		.try_push(up_data_structs::PropertyKeyPermission {
-			key: key::url(),
-			permission: up_data_structs::PropertyPermission {
-				mutable: false,
-				collection_admin: true,
-				token_owner: false,
-			},
-		})
-		.map_err(|e| Error::Revert(format!("{:?}", e)))?;
-
-	if add_properties {
-		token_property_permissions
-			.try_push(up_data_structs::PropertyKeyPermission {
-				key: key::suffix(),
-				permission: up_data_structs::PropertyPermission {
-					mutable: false,
-					collection_admin: true,
-					token_owner: false,
-				},
-			})
-			.map_err(|e| Error::Revert(format!("{:?}", e)))?;
-
-		properties
-			.try_push(up_data_structs::Property {
-				key: key::schema_name(),
-				value: property_value::erc721(),
-			})
-			.map_err(|e| Error::Revert(format!("{:?}", e)))?;
-
-		if !base_uri_value.is_empty() {
-			properties
-				.try_push(up_data_structs::Property {
-					key: key::base_uri(),
-					value: base_uri_value,
-				})
-				.map_err(|e| Error::Revert(format!("{:?}", e)))?;
-		}
-	}
-
-	let data = CreateCollectionData {
-		name,
-		mode,
-		description,
-		token_prefix,
-		token_property_permissions,
-		properties,
-		..Default::default()
-	};
-	Ok(data)
+	Ok((caller, name, description, token_prefix))
 }
 
 fn create_refungible_collection_internal<
@@ -160,26 +92,27 @@
 	name: string,
 	description: string,
 	token_prefix: string,
-	base_uri: string,
-	add_properties: bool,
 ) -> Result<address> {
-	let (caller, name, description, token_prefix, base_uri_value) =
-		convert_data::<T>(caller, name, description, token_prefix, base_uri)?;
-	let data = make_data::<T>(
+	let (caller, name, description, token_prefix) =
+		convert_data::<T>(caller, name, description, token_prefix)?;
+	let data = CreateCollectionData {
 		name,
-		CollectionMode::ReFungible,
+		mode: CollectionMode::ReFungible,
 		description,
 		token_prefix,
-		base_uri_value,
-		add_properties,
-	)?;
+		..Default::default()
+	};
 	check_sent_amount_equals_collection_creation_price::<T>(value)?;
 	let collection_helpers_address =
 		T::CrossAccountId::from_eth(<T as pallet_common::Config>::ContractAddress::get());
 
-	let collection_id =
-		T::CollectionDispatch::create(caller.clone(), collection_helpers_address, data)
-			.map_err(pallet_evm_coder_substrate::dispatch_to_evm::<T>)?;
+	let collection_id = T::CollectionDispatch::create(
+		caller.clone(),
+		collection_helpers_address,
+		data,
+		Default::default(),
+	)
+	.map_err(pallet_evm_coder_substrate::dispatch_to_evm::<T>)?;
 	let address = pallet_common::eth::collection_id_to_address(collection_id);
 	Ok(address)
 }
@@ -212,7 +145,8 @@
 	/// @param tokenPrefix Token prefix to represent the collection tokens in UI and user applications
 	/// @return address Address of the newly created collection
 	#[weight(<SelfWeightOf<T>>::create_collection())]
-	fn create_nonfungible_collection(
+	#[solidity(rename_selector = "createNFTCollection")]
+	fn create_nft_collection(
 		&mut self,
 		caller: caller,
 		value: value,
@@ -220,60 +154,51 @@
 		description: string,
 		token_prefix: string,
 	) -> Result<address> {
-		let (caller, name, description, token_prefix, _base_uri_value) =
-			convert_data::<T>(caller, name, description, token_prefix, "".into())?;
-		let data = make_data::<T>(
+		let (caller, name, description, token_prefix) =
+			convert_data::<T>(caller, name, description, token_prefix)?;
+		let data = CreateCollectionData {
 			name,
-			CollectionMode::NFT,
+			mode: CollectionMode::NFT,
 			description,
 			token_prefix,
-			Default::default(),
-			false,
-		)?;
+			..Default::default()
+		};
 		check_sent_amount_equals_collection_creation_price::<T>(value)?;
 		let collection_helpers_address =
 			T::CrossAccountId::from_eth(<T as pallet_common::Config>::ContractAddress::get());
-		let collection_id = T::CollectionDispatch::create(caller, collection_helpers_address, data)
-			.map_err(dispatch_to_evm::<T>)?;
+		let collection_id = T::CollectionDispatch::create(
+			caller,
+			collection_helpers_address,
+			data,
+			Default::default(),
+		)
+		.map_err(dispatch_to_evm::<T>)?;
 
 		let address = pallet_common::eth::collection_id_to_address(collection_id);
 		Ok(address)
 	}
-
+	/// Create an NFT collection
+	/// @param name Name of the collection
+	/// @param description Informative description of the collection
+	/// @param tokenPrefix Token prefix to represent the collection tokens in UI and user applications
+	/// @return address Address of the newly created collection
 	#[weight(<SelfWeightOf<T>>::create_collection())]
-	#[solidity(rename_selector = "createERC721MetadataCompatibleCollection")]
-	fn create_nonfungible_collection_with_properties(
+	#[deprecated(note = "mathod was renamed to `create_nft_collection`, prefer it instead")]
+	#[solidity(hide)]
+	fn create_nonfungible_collection(
 		&mut self,
 		caller: caller,
 		value: value,
 		name: string,
 		description: string,
 		token_prefix: string,
-		base_uri: string,
 	) -> Result<address> {
-		let (caller, name, description, token_prefix, base_uri_value) =
-			convert_data::<T>(caller, name, description, token_prefix, base_uri)?;
-		let data = make_data::<T>(
-			name,
-			CollectionMode::NFT,
-			description,
-			token_prefix,
-			base_uri_value,
-			true,
-		)?;
-		check_sent_amount_equals_collection_creation_price::<T>(value)?;
-		let collection_helpers_address =
-			T::CrossAccountId::from_eth(<T as pallet_common::Config>::ContractAddress::get());
-		let collection_id = T::CollectionDispatch::create(caller, collection_helpers_address, data)
-			.map_err(pallet_evm_coder_substrate::dispatch_to_evm::<T>)?;
-
-		let address = pallet_common::eth::collection_id_to_address(collection_id);
-		Ok(address)
+		self.create_nft_collection(caller, value, name, description, token_prefix)
 	}
 
 	#[weight(<SelfWeightOf<T>>::create_collection())]
 	#[solidity(rename_selector = "createRFTCollection")]
-	fn create_refungible_collection(
+	fn create_rft_collection(
 		&mut self,
 		caller: caller,
 		value: value,
@@ -281,37 +206,94 @@
 		description: string,
 		token_prefix: string,
 	) -> Result<address> {
-		create_refungible_collection_internal::<T>(
-			caller,
-			value,
-			name,
-			description,
-			token_prefix,
-			Default::default(),
-			false,
-		)
+		create_refungible_collection_internal::<T>(caller, value, name, description, token_prefix)
 	}
 
-	#[weight(<SelfWeightOf<T>>::create_collection())]
-	#[solidity(rename_selector = "createERC721MetadataCompatibleRFTCollection")]
-	fn create_refungible_collection_with_properties(
+	#[solidity(rename_selector = "makeCollectionERC721MetadataCompatible")]
+	fn make_collection_metadata_compatible(
 		&mut self,
 		caller: caller,
-		value: value,
-		name: string,
-		description: string,
-		token_prefix: string,
+		collection: address,
 		base_uri: string,
-	) -> Result<address> {
-		create_refungible_collection_internal::<T>(
-			caller,
-			value,
-			name,
-			description,
-			token_prefix,
-			base_uri,
-			true,
-		)
+	) -> Result<()> {
+		let caller = T::CrossAccountId::from_eth(caller);
+		let collection =
+			pallet_common::eth::map_eth_to_id(&collection).ok_or("not a collection address")?;
+		let mut collection =
+			<crate::CollectionHandle<T>>::new(collection).ok_or("collection not found")?;
+
+		if !matches!(
+			collection.mode,
+			CollectionMode::NFT | CollectionMode::ReFungible
+		) {
+			return Err("target collection should be either NFT or Refungible".into());
+		}
+
+		self.recorder().consume_sstore()?;
+		collection
+			.check_is_owner_or_admin(&caller)
+			.map_err(dispatch_to_evm::<T>)?;
+
+		if collection.flags.erc721metadata {
+			return Err("target collection is already Erc721Metadata compatible".into());
+		}
+		collection.flags.erc721metadata = true;
+
+		let all_permissions = <pallet_common::CollectionPropertyPermissions<T>>::get(collection.id);
+		if all_permissions.get(&key::url()).is_none() {
+			self.recorder().consume_sstore()?;
+			<PalletCommon<T>>::set_property_permission(
+				&collection,
+				&caller,
+				up_data_structs::PropertyKeyPermission {
+					key: key::url(),
+					permission: up_data_structs::PropertyPermission {
+						mutable: true,
+						collection_admin: true,
+						token_owner: false,
+					},
+				},
+			)
+			.map_err(dispatch_to_evm::<T>)?;
+		}
+		if all_permissions.get(&key::suffix()).is_none() {
+			self.recorder().consume_sstore()?;
+			<PalletCommon<T>>::set_property_permission(
+				&collection,
+				&caller,
+				up_data_structs::PropertyKeyPermission {
+					key: key::suffix(),
+					permission: up_data_structs::PropertyPermission {
+						mutable: true,
+						collection_admin: true,
+						token_owner: false,
+					},
+				},
+			)
+			.map_err(dispatch_to_evm::<T>)?;
+		}
+
+		let all_properties = <pallet_common::CollectionProperties<T>>::get(collection.id);
+		if all_properties.get(&key::base_uri()).is_none() && !base_uri.is_empty() {
+			self.recorder().consume_sstore()?;
+			<PalletCommon<T>>::set_collection_properties(
+				&collection,
+				&caller,
+				vec![up_data_structs::Property {
+					key: key::base_uri(),
+					value: base_uri
+						.into_bytes()
+						.try_into()
+						.map_err(|_| "base uri is too large")?,
+				}],
+			)
+			.map_err(dispatch_to_evm::<T>)?;
+		}
+
+		self.recorder().consume_sstore()?;
+		collection.save().map_err(dispatch_to_evm::<T>)?;
+
+		Ok(())
 	}
 
 	/// Check if a collection exists

binary blob — no preview

--- a/pallets/unique/src/eth/stubs/CollectionHelpers.sol
+++ b/pallets/unique/src/eth/stubs/CollectionHelpers.sol
@@ -23,16 +23,16 @@
 }
 
 /// @title Contract, which allows users to operate with collections
-/// @dev the ERC-165 identifier for this interface is 0x5ad4f440
+/// @dev the ERC-165 identifier for this interface is 0x58918631
 contract CollectionHelpers is Dummy, ERC165, CollectionHelpersEvents {
 	/// Create an NFT collection
 	/// @param name Name of the collection
 	/// @param description Informative description of the collection
 	/// @param tokenPrefix Token prefix to represent the collection tokens in UI and user applications
 	/// @return address Address of the newly created collection
-	/// @dev EVM selector for this function is: 0xe34a6844,
-	///  or in textual repr: createNonfungibleCollection(string,string,string)
-	function createNonfungibleCollection(
+	/// @dev EVM selector for this function is: 0x844af658,
+	///  or in textual repr: createNFTCollection(string,string,string)
+	function createNFTCollection(
 		string memory name,
 		string memory description,
 		string memory tokenPrefix
@@ -45,22 +45,21 @@
 		return 0x0000000000000000000000000000000000000000;
 	}
 
-	/// @dev EVM selector for this function is: 0xa634a5f9,
-	///  or in textual repr: createERC721MetadataCompatibleCollection(string,string,string,string)
-	function createERC721MetadataCompatibleCollection(
-		string memory name,
-		string memory description,
-		string memory tokenPrefix,
-		string memory baseUri
-	) public payable returns (address) {
-		require(false, stub_error);
-		name;
-		description;
-		tokenPrefix;
-		baseUri;
-		dummy = 0;
-		return 0x0000000000000000000000000000000000000000;
-	}
+	// /// Create an NFT collection
+	// /// @param name Name of the collection
+	// /// @param description Informative description of the collection
+	// /// @param tokenPrefix Token prefix to represent the collection tokens in UI and user applications
+	// /// @return address Address of the newly created collection
+	// /// @dev EVM selector for this function is: 0xe34a6844,
+	// ///  or in textual repr: createNonfungibleCollection(string,string,string)
+	// function createNonfungibleCollection(string memory name, string memory description, string memory tokenPrefix) public payable returns (address) {
+	// 	require(false, stub_error);
+	// 	name;
+	// 	description;
+	// 	tokenPrefix;
+	// 	dummy = 0;
+	// 	return 0x0000000000000000000000000000000000000000;
+	// }
 
 	/// @dev EVM selector for this function is: 0xab173450,
 	///  or in textual repr: createRFTCollection(string,string,string)
@@ -77,21 +76,13 @@
 		return 0x0000000000000000000000000000000000000000;
 	}
 
-	/// @dev EVM selector for this function is: 0xa5596388,
-	///  or in textual repr: createERC721MetadataCompatibleRFTCollection(string,string,string,string)
-	function createERC721MetadataCompatibleRFTCollection(
-		string memory name,
-		string memory description,
-		string memory tokenPrefix,
-		string memory baseUri
-	) public payable returns (address) {
+	/// @dev EVM selector for this function is: 0x85624258,
+	///  or in textual repr: makeCollectionERC721MetadataCompatible(address,string)
+	function makeCollectionERC721MetadataCompatible(address collection, string memory baseUri) public {
 		require(false, stub_error);
-		name;
-		description;
-		tokenPrefix;
+		collection;
 		baseUri;
 		dummy = 0;
-		return 0x0000000000000000000000000000000000000000;
 	}
 
 	/// Check if a collection exists

--- a/pallets/unique/src/lib.rs
+++ b/pallets/unique/src/lib.rs
@@ -345,7 +345,7 @@
 
 			// =========
 			let sender = T::CrossAccountId::from_sub(sender);
-			let _id = T::CollectionDispatch::create(sender.clone(), sender, data)?;
+			let _id = T::CollectionDispatch::create(sender.clone(), sender, data, Default::default())?;
 
 			Ok(())
 		}

--- a/primitives/data-structs/src/lib.rs
+++ b/primitives/data-structs/src/lib.rs
@@ -365,11 +365,14 @@
 	/// Tokens in foreign collections can be transferred, but not burnt
 	#[bondrewd(bits = "0..1")]
 	pub foreign: bool,
+	/// Supports ERC721Metadata
+	#[bondrewd(bits = "1..2")]
+	pub erc721metadata: bool,
 	/// External collections can't be managed using `unique` api
 	#[bondrewd(bits = "7..8")]
 	pub external: bool,
 
-	#[bondrewd(reserve, bits = "1..7")]
+	#[bondrewd(reserve, bits = "2..7")]
 	pub reserved: u8,
 }
 bondrewd_codec!(CollectionFlags);
@@ -434,6 +437,15 @@
 	pub meta_update_permission: MetaUpdatePermission,
 }
 
+#[derive(Encode, Decode, Clone, PartialEq, TypeInfo)]
+#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
+pub struct RpcCollectionFlags {
+	/// Is collection is foreign.
+	pub foreign: bool,
+	/// Collection supports ERC721Metadata.
+	pub erc721metadata: bool,
+}
+
 /// Collection parameters, used in RPC calls (see [`Collection`] for the storage version).
 #[derive(Encode, Decode, Clone, PartialEq, TypeInfo)]
 #[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
@@ -471,8 +483,8 @@
 	/// Is collection read only.
 	pub read_only: bool,
 
-	/// Is collection is foreign.
-	pub foreign: bool,
+	/// Extra collection flags
+	pub flags: RpcCollectionFlags,
 }
 
 /// Data used for create collection.

--- a/runtime/common/dispatch.rs
+++ b/runtime/common/dispatch.rs
@@ -31,7 +31,7 @@
 };
 use up_data_structs::{
 	CollectionMode, CreateCollectionData, MAX_DECIMAL_POINTS, mapping::TokenAddressMapping,
-	CollectionId,
+	CollectionId, CollectionFlags,
 };
 
 #[cfg(not(feature = "refungible"))]
@@ -57,10 +57,11 @@
 		sender: T::CrossAccountId,
 		payer: T::CrossAccountId,
 		data: CreateCollectionData<T::AccountId>,
+		flags: CollectionFlags,
 	) -> Result<CollectionId, DispatchError> {
 		let id = match data.mode {
 			CollectionMode::NFT => {
-				<PalletNonfungible<T>>::init_collection(sender, payer, data, false)?
+				<PalletNonfungible<T>>::init_collection(sender, payer, data, flags)?
 			}
 			CollectionMode::Fungible(decimal_points) => {
 				// check params
@@ -68,11 +69,13 @@
 					decimal_points <= MAX_DECIMAL_POINTS,
 					pallet_unique::Error::<T>::CollectionDecimalPointLimitExceeded
 				);
-				<PalletFungible<T>>::init_collection(sender, payer, data)?
+				<PalletFungible<T>>::init_collection(sender, payer, data, flags)?
 			}
 
 			#[cfg(feature = "refungible")]
-			CollectionMode::ReFungible => <PalletRefungible<T>>::init_collection(sender, payer, data)?,
+			CollectionMode::ReFungible => {
+				<PalletRefungible<T>>::init_collection(sender, payer, data, flags)?
+			}
 
 			#[cfg(not(feature = "refungible"))]
 			CollectionMode::ReFungible => return unsupported!(T),

--- a/runtime/common/ethereum/sponsoring.rs
+++ b/runtime/common/ethereum/sponsoring.rs
@@ -24,7 +24,7 @@
 use pallet_nonfungible::{
 	Config as NonfungibleConfig,
 	erc::{
-		UniqueNFTCall, ERC721UniqueExtensionsCall, ERC721MintableCall, ERC721Call,
+		UniqueNFTCall, ERC721UniqueExtensionsCall, ERC721UniqueMintableCall, ERC721Call,
 		TokenPropertiesCall,
 	},
 };
@@ -82,18 +82,17 @@
 						let token_id: TokenId = token_id.try_into().ok()?;
 						withdraw_transfer::<T>(&collection, &who, &token_id).map(|()| sponsor)
 					}
-					UniqueNFTCall::ERC721Mintable(
-						ERC721MintableCall::Mint { token_id, .. }
-						| ERC721MintableCall::MintWithTokenUri { token_id, .. },
-					) => {
-						let _token_id: TokenId = token_id.try_into().ok()?;
-						withdraw_create_item::<T>(
-							&collection,
-							&who,
-							&CreateItemData::NFT(CreateNftData::default()),
-						)
-						.map(|()| sponsor)
-					}
+					UniqueNFTCall::ERC721UniqueMintable(
+						ERC721UniqueMintableCall::Mint { .. }
+						| ERC721UniqueMintableCall::MintCheckId { .. }
+						| ERC721UniqueMintableCall::MintWithTokenUri { .. }
+						| ERC721UniqueMintableCall::MintWithTokenUriCheckId { .. },
+					) => withdraw_create_item::<T>(
+						&collection,
+						&who,
+						&CreateItemData::NFT(CreateNftData::default()),
+					)
+					.map(|()| sponsor),
 					UniqueNFTCall::ERC721(ERC721Call::TransferFrom { token_id, from, .. }) => {
 						let token_id: TokenId = token_id.try_into().ok()?;
 						let from = T::CrossAccountId::from_eth(from);

--- a/tests/src/eth/allowlist.test.ts
+++ b/tests/src/eth/allowlist.test.ts
@@ -78,7 +78,7 @@
     const owner = await helper.eth.createAccountWithBalance(donor);
     const user = helper.eth.createAccount();
 
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
     expect(await collectionEvm.methods.allowed(user).call({from: owner})).to.be.false;
@@ -94,7 +94,7 @@
   //   const owner = await helper.eth.createAccountWithBalance(donor);
   //   const user = donor;
 
-  //   const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+  //   const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
   //   const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
   //   expect(await helper.collection.allowed(collectionId, {Substrate: user.address})).to.be.false;
@@ -110,7 +110,7 @@
     const notOwner = await helper.eth.createAccountWithBalance(donor);
     const user = helper.eth.createAccount();
 
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
     expect(await collectionEvm.methods.allowed(user).call({from: owner})).to.be.false;
@@ -129,7 +129,7 @@
   //   const notOwner = await helper.eth.createAccountWithBalance(donor);
   //   const user = donor;
 
-  //   const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+  //   const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
   //   const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
   //   expect(await helper.collection.allowed(collectionId, {Substrate: user.address})).to.be.false;

--- a/tests/src/eth/api/CollectionHelpers.sol
+++ b/tests/src/eth/api/CollectionHelpers.sol
@@ -18,29 +18,29 @@
 }
 
 /// @title Contract, which allows users to operate with collections
-/// @dev the ERC-165 identifier for this interface is 0x5ad4f440
+/// @dev the ERC-165 identifier for this interface is 0x58918631
 interface CollectionHelpers is Dummy, ERC165, CollectionHelpersEvents {
 	/// Create an NFT collection
 	/// @param name Name of the collection
 	/// @param description Informative description of the collection
 	/// @param tokenPrefix Token prefix to represent the collection tokens in UI and user applications
 	/// @return address Address of the newly created collection
-	/// @dev EVM selector for this function is: 0xe34a6844,
-	///  or in textual repr: createNonfungibleCollection(string,string,string)
-	function createNonfungibleCollection(
+	/// @dev EVM selector for this function is: 0x844af658,
+	///  or in textual repr: createNFTCollection(string,string,string)
+	function createNFTCollection(
 		string memory name,
 		string memory description,
 		string memory tokenPrefix
 	) external payable returns (address);
 
-	/// @dev EVM selector for this function is: 0xa634a5f9,
-	///  or in textual repr: createERC721MetadataCompatibleCollection(string,string,string,string)
-	function createERC721MetadataCompatibleCollection(
-		string memory name,
-		string memory description,
-		string memory tokenPrefix,
-		string memory baseUri
-	) external payable returns (address);
+	// /// Create an NFT collection
+	// /// @param name Name of the collection
+	// /// @param description Informative description of the collection
+	// /// @param tokenPrefix Token prefix to represent the collection tokens in UI and user applications
+	// /// @return address Address of the newly created collection
+	// /// @dev EVM selector for this function is: 0xe34a6844,
+	// ///  or in textual repr: createNonfungibleCollection(string,string,string)
+	// function createNonfungibleCollection(string memory name, string memory description, string memory tokenPrefix) external payable returns (address);
 
 	/// @dev EVM selector for this function is: 0xab173450,
 	///  or in textual repr: createRFTCollection(string,string,string)
@@ -50,14 +50,9 @@
 		string memory tokenPrefix
 	) external payable returns (address);
 
-	/// @dev EVM selector for this function is: 0xa5596388,
-	///  or in textual repr: createERC721MetadataCompatibleRFTCollection(string,string,string,string)
-	function createERC721MetadataCompatibleRFTCollection(
-		string memory name,
-		string memory description,
-		string memory tokenPrefix,
-		string memory baseUri
-	) external payable returns (address);
+	/// @dev EVM selector for this function is: 0x85624258,
+	///  or in textual repr: makeCollectionERC721MetadataCompatible(address,string)
+	function makeCollectionERC721MetadataCompatible(address collection, string memory baseUri) external;
 
 	/// Check if a collection exists
 	/// @param collectionAddress Address of the collection in question

--- a/tests/src/eth/api/UniqueFungible.sol
+++ b/tests/src/eth/api/UniqueFungible.sol
@@ -13,7 +13,7 @@
 }
 
 /// @title A contract that allows you to work with collections.
-/// @dev the ERC-165 identifier for this interface is 0x3e1e8083
+/// @dev the ERC-165 identifier for this interface is 0x62e22290
 interface Collection is Dummy, ERC165 {
 	/// Set collection property.
 	///
@@ -194,9 +194,9 @@
 	///
 	/// @dev Owner can be changed only by current owner
 	/// @param newOwner new owner account
-	/// @dev EVM selector for this function is: 0x13af4035,
-	///  or in textual repr: setOwner(address)
-	function setOwner(address newOwner) external;
+	/// @dev EVM selector for this function is: 0x4f53e226,
+	///  or in textual repr: changeCollectionOwner(address)
+	function changeCollectionOwner(address newOwner) external;
 }
 
 /// @dev the ERC-165 identifier for this interface is 0x63034ac5

62}62}
6363
64/// @title A contract that allows you to work with collections.64/// @title A contract that allows you to work with collections.
65/// @dev the ERC-165 identifier for this interface is 0x3e1e808365/// @dev the ERC-165 identifier for this interface is 0x62e22290
66interface Collection is Dummy, ERC165 {66interface Collection is Dummy, ERC165 {
67	/// Set collection property.67	/// Set collection property.
68	///68	///
243	///243	///
244	/// @dev Owner can be changed only by current owner244	/// @dev Owner can be changed only by current owner
245	/// @param newOwner new owner account245	/// @param newOwner new owner account
246	/// @dev EVM selector for this function is: 0x13af4035,246	/// @dev EVM selector for this function is: 0x4f53e226,
247	///  or in textual repr: setOwner(address)247	///  or in textual repr: changeCollectionOwner(address)
248	function setOwner(address newOwner) external;248	function changeCollectionOwner(address newOwner) external;
249}249}
250250
251/// @dev anonymous struct251/// @dev anonymous struct
254	uint256 field_1;254	uint256 field_1;
255}255}
256
257/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension
258/// @dev See https://eips.ethereum.org/EIPS/eip-721
259/// @dev the ERC-165 identifier for this interface is 0x5b5e139f
260interface ERC721Metadata is Dummy, ERC165 {
261	// /// @notice A descriptive name for a collection of NFTs in this contract
262	// /// @dev real implementation of this function lies in `ERC721UniqueExtensions`
263	// /// @dev EVM selector for this function is: 0x06fdde03,
264	// ///  or in textual repr: name()
265	// function name() external view returns (string memory);
266
267	// /// @notice An abbreviated name for NFTs in this contract
268	// /// @dev real implementation of this function lies in `ERC721UniqueExtensions`
269	// /// @dev EVM selector for this function is: 0x95d89b41,
270	// ///  or in textual repr: symbol()
271	// function symbol() external view returns (string memory);
272
273	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
274	///
275	/// @dev If the token has a `url` property and it is not empty, it is returned.
276	///  Else If the collection does not have a property with key `schemaName` or its value is not equal to `ERC721Metadata`, it return an error `tokenURI not set`.
277	///  If the collection property `baseURI` is empty or absent, return "" (empty string)
278	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix
279	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).
280	///
281	/// @return token's const_metadata
282	/// @dev EVM selector for this function is: 0xc87b56dd,
283	///  or in textual repr: tokenURI(uint256)
284	function tokenURI(uint256 tokenId) external view returns (string memory);
285}
256286
257/// @title ERC721 Token that can be irreversibly burned (destroyed).287/// @title ERC721 Token that can be irreversibly burned (destroyed).
258/// @dev the ERC-165 identifier for this interface is 0x42966c68288/// @dev the ERC-165 identifier for this interface is 0x42966c68
267}297}
268298
269/// @dev inlined interface299/// @dev inlined interface
270interface ERC721MintableEvents {300interface ERC721UniqueMintableEvents {
271	event MintingFinished();301	event MintingFinished();
272}302}
273303
274/// @title ERC721 minting logic.304/// @title ERC721 minting logic.
275/// @dev the ERC-165 identifier for this interface is 0x68ccfe89305/// @dev the ERC-165 identifier for this interface is 0x476ff149
276interface ERC721Mintable is Dummy, ERC165, ERC721MintableEvents {306interface ERC721UniqueMintable is Dummy, ERC165, ERC721UniqueMintableEvents {
277	/// @dev EVM selector for this function is: 0x05d2035b,307	/// @dev EVM selector for this function is: 0x05d2035b,
278	///  or in textual repr: mintingFinished()308	///  or in textual repr: mintingFinished()
279	function mintingFinished() external view returns (bool);309	function mintingFinished() external view returns (bool);
280310
281	/// @notice Function to mint token.311	/// @notice Function to mint token.
282	/// @dev `tokenId` should be obtained with `nextTokenId` method,
283	///  unlike standard, you can't specify it manually
284	/// @param to The new owner312	/// @param to The new owner
285	/// @param tokenId ID of the minted NFT313	/// @return uint256 The id of the newly minted token
286	/// @dev EVM selector for this function is: 0x40c10f19,314	/// @dev EVM selector for this function is: 0x6a627842,
287	///  or in textual repr: mint(address,uint256)315	///  or in textual repr: mint(address)
288	function mint(address to, uint256 tokenId) external returns (bool);316	function mint(address to) external returns (uint256);
317
318	// /// @notice Function to mint token.
319	// /// @dev `tokenId` should be obtained with `nextTokenId` method,
320	// ///  unlike standard, you can't specify it manually
321	// /// @param to The new owner
322	// /// @param tokenId ID of the minted NFT
323	// /// @dev EVM selector for this function is: 0x40c10f19,
324	// ///  or in textual repr: mint(address,uint256)
325	// function mint(address to, uint256 tokenId) external returns (bool);
289326
290	/// @notice Function to mint token with the given tokenUri.327	/// @notice Function to mint token with the given tokenUri.
291	/// @dev `tokenId` should be obtained with `nextTokenId` method,
292	///  unlike standard, you can't specify it manually
293	/// @param to The new owner328	/// @param to The new owner
294	/// @param tokenId ID of the minted NFT
295	/// @param tokenUri Token URI that would be stored in the NFT properties329	/// @param tokenUri Token URI that would be stored in the NFT properties
330	/// @return uint256 The id of the newly minted token
296	/// @dev EVM selector for this function is: 0x50bb4e7f,331	/// @dev EVM selector for this function is: 0x45c17782,
297	///  or in textual repr: mintWithTokenURI(address,uint256,string)332	///  or in textual repr: mintWithTokenURI(address,string)
298	function mintWithTokenURI(333	function mintWithTokenURI(address to, string memory tokenUri) external returns (uint256);
299		address to,334
300		uint256 tokenId,335	// /// @notice Function to mint token with the given tokenUri.
301		string memory tokenUri336	// /// @dev `tokenId` should be obtained with `nextTokenId` method,
302	) external returns (bool);337	// ///  unlike standard, you can't specify it manually
338	// /// @param to The new owner
339	// /// @param tokenId ID of the minted NFT
340	// /// @param tokenUri Token URI that would be stored in the NFT properties
341	// /// @dev EVM selector for this function is: 0x50bb4e7f,
342	// ///  or in textual repr: mintWithTokenURI(address,uint256,string)
343	// function mintWithTokenURI(address to, uint256 tokenId, string memory tokenUri) external returns (bool);
303344
304	/// @dev Not implemented345	/// @dev Not implemented
305	/// @dev EVM selector for this function is: 0x7d64bcb4,346	/// @dev EVM selector for this function is: 0x7d64bcb4,
308}349}
309350
310/// @title Unique extensions for ERC721.351/// @title Unique extensions for ERC721.
311/// @dev the ERC-165 identifier for this interface is 0xd74d154f352/// @dev the ERC-165 identifier for this interface is 0x4468500d
312interface ERC721UniqueExtensions is Dummy, ERC165 {353interface ERC721UniqueExtensions is Dummy, ERC165 {
354	/// @notice A descriptive name for a collection of NFTs in this contract
355	/// @dev EVM selector for this function is: 0x06fdde03,
356	///  or in textual repr: name()
357	function name() external view returns (string memory);
358
359	/// @notice An abbreviated name for NFTs in this contract
360	/// @dev EVM selector for this function is: 0x95d89b41,
361	///  or in textual repr: symbol()
362	function symbol() external view returns (string memory);
363
313	/// @notice Transfer ownership of an NFT364	/// @notice Transfer ownership of an NFT
314	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`365	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`
350	/// @param tokens array of pairs of token ID and token URI for minted tokens401	/// @param tokens array of pairs of token ID and token URI for minted tokens
351	/// @dev EVM selector for this function is: 0x36543006,402	/// @dev EVM selector for this function is: 0x36543006,
352	///  or in textual repr: mintBulkWithTokenURI(address,(uint256,string)[])403	///  or in textual repr: mintBulkWithTokenURI(address,(uint256,string)[])
353	function mintBulkWithTokenURI(address to, Tuple8[] memory tokens) external returns (bool);404	function mintBulkWithTokenURI(address to, Tuple6[] memory tokens) external returns (bool);
354}405}
355406
356/// @dev anonymous struct407/// @dev anonymous struct
357struct Tuple8 {408struct Tuple6 {
358	uint256 field_0;409	uint256 field_0;
359	string field_1;410	string field_1;
360}411}
384	function totalSupply() external view returns (uint256);435	function totalSupply() external view returns (uint256);
385}436}
386
387/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension
388/// @dev See https://eips.ethereum.org/EIPS/eip-721
389/// @dev the ERC-165 identifier for this interface is 0x5b5e139f
390interface ERC721Metadata is Dummy, ERC165 {
391	/// @notice A descriptive name for a collection of NFTs in this contract
392	/// @dev EVM selector for this function is: 0x06fdde03,
393	///  or in textual repr: name()
394	function name() external view returns (string memory);
395
396	/// @notice An abbreviated name for NFTs in this contract
397	/// @dev EVM selector for this function is: 0x95d89b41,
398	///  or in textual repr: symbol()
399	function symbol() external view returns (string memory);
400
401	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
402	///
403	/// @dev If the token has a `url` property and it is not empty, it is returned.
404	///  Else If the collection does not have a property with key `schemaName` or its value is not equal to `ERC721Metadata`, it return an error `tokenURI not set`.
405	///  If the collection property `baseURI` is empty or absent, return "" (empty string)
406	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix
407	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).
408	///
409	/// @return token's const_metadata
410	/// @dev EVM selector for this function is: 0xc87b56dd,
411	///  or in textual repr: tokenURI(uint256)
412	function tokenURI(uint256 tokenId) external view returns (string memory);
413}
414437
415/// @dev inlined interface438/// @dev inlined interface
416interface ERC721Events {439interface ERC721Events {
507	Dummy,530	Dummy,
508	ERC165,531	ERC165,
509	ERC721,532	ERC721,
510	ERC721Metadata,
511	ERC721Enumerable,533	ERC721Enumerable,
512	ERC721UniqueExtensions,534	ERC721UniqueExtensions,
513	ERC721Mintable,535	ERC721UniqueMintable,
514	ERC721Burnable,536	ERC721Burnable,
537	ERC721Metadata,
515	Collection,538	Collection,
516	TokenProperties539	TokenProperties
517{}540{}

--- a/tests/src/eth/api/UniqueRefungible.sol
+++ b/tests/src/eth/api/UniqueRefungible.sol
@@ -62,7 +62,7 @@
 }
 
 /// @title A contract that allows you to work with collections.
-/// @dev the ERC-165 identifier for this interface is 0x3e1e8083
+/// @dev the ERC-165 identifier for this interface is 0x62e22290
 interface Collection is Dummy, ERC165 {
 	/// Set collection property.
 	///
@@ -243,9 +243,9 @@
 	///
 	/// @dev Owner can be changed only by current owner
 	/// @param newOwner new owner account
-	/// @dev EVM selector for this function is: 0x13af4035,
-	///  or in textual repr: setOwner(address)
-	function setOwner(address newOwner) external;
+	/// @dev EVM selector for this function is: 0x4f53e226,
+	///  or in textual repr: changeCollectionOwner(address)
+	function changeCollectionOwner(address newOwner) external;
 }
 
 /// @dev anonymous struct
@@ -254,6 +254,34 @@
 	uint256 field_1;
 }
 
+/// @dev the ERC-165 identifier for this interface is 0x5b5e139f
+interface ERC721Metadata is Dummy, ERC165 {
+	// /// @notice A descriptive name for a collection of NFTs in this contract
+	// /// @dev real implementation of this function lies in `ERC721UniqueExtensions`
+	// /// @dev EVM selector for this function is: 0x06fdde03,
+	// ///  or in textual repr: name()
+	// function name() external view returns (string memory);
+
+	// /// @notice An abbreviated name for NFTs in this contract
+	// /// @dev real implementation of this function lies in `ERC721UniqueExtensions`
+	// /// @dev EVM selector for this function is: 0x95d89b41,
+	// ///  or in textual repr: symbol()
+	// function symbol() external view returns (string memory);
+
+	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
+	///
+	/// @dev If the token has a `url` property and it is not empty, it is returned.
+	///  Else If the collection does not have a property with key `schemaName` or its value is not equal to `ERC721Metadata`, it return an error `tokenURI not set`.
+	///  If the collection property `baseURI` is empty or absent, return "" (empty string)
+	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix
+	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).
+	///
+	/// @return token's const_metadata
+	/// @dev EVM selector for this function is: 0xc87b56dd,
+	///  or in textual repr: tokenURI(uint256)
+	function tokenURI(uint256 tokenId) external view returns (string memory);
+}
+
 /// @title ERC721 Token that can be irreversibly burned (destroyed).
 /// @dev the ERC-165 identifier for this interface is 0x42966c68
 interface ERC721Burnable is Dummy, ERC165 {
@@ -267,40 +295,51 @@
 }
 
 /// @dev inlined interface
-interface ERC721MintableEvents {
+interface ERC721UniqueMintableEvents {
 	event MintingFinished();
 }
 
 /// @title ERC721 minting logic.
-/// @dev the ERC-165 identifier for this interface is 0x68ccfe89
-interface ERC721Mintable is Dummy, ERC165, ERC721MintableEvents {
+/// @dev the ERC-165 identifier for this interface is 0x476ff149
+interface ERC721UniqueMintable is Dummy, ERC165, ERC721UniqueMintableEvents {
 	/// @dev EVM selector for this function is: 0x05d2035b,
 	///  or in textual repr: mintingFinished()
 	function mintingFinished() external view returns (bool);
 
 	/// @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 RFT
-	/// @dev EVM selector for this function is: 0x40c10f19,
-	///  or in textual repr: mint(address,uint256)
-	function mint(address to, uint256 tokenId) external returns (bool);
+	/// @return uint256 The id of the newly minted token
+	/// @dev EVM selector for this function is: 0x6a627842,
+	///  or in textual repr: mint(address)
+	function mint(address to) external returns (uint256);
+
+	// /// @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 RFT
+	// /// @dev EVM selector for this function is: 0x40c10f19,
+	// ///  or in textual repr: mint(address,uint256)
+	// function mint(address to, uint256 tokenId) external returns (bool);
 
 	/// @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 RFT
-	/// @param tokenUri Token URI that would be stored in the RFT properties
-	/// @dev EVM selector for this function is: 0x50bb4e7f,
-	///  or in textual repr: mintWithTokenURI(address,uint256,string)
-	function mintWithTokenURI(
-		address to,
-		uint256 tokenId,
-		string memory tokenUri
-	) external returns (bool);
+	/// @param tokenUri Token URI that would be stored in the NFT properties
+	/// @return uint256 The id of the newly minted token
+	/// @dev EVM selector for this function is: 0x45c17782,
+	///  or in textual repr: mintWithTokenURI(address,string)
+	function mintWithTokenURI(address to, string memory tokenUri) external returns (uint256);
 
+	// /// @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 RFT
+	// /// @param tokenUri Token URI that would be stored in the RFT properties
+	// /// @dev EVM selector for this function is: 0x50bb4e7f,
+	// ///  or in textual repr: mintWithTokenURI(address,uint256,string)
+	// function mintWithTokenURI(address to, uint256 tokenId, string memory tokenUri) external returns (bool);
+
 	/// @dev Not implemented
 	/// @dev EVM selector for this function is: 0x7d64bcb4,
 	///  or in textual repr: finishMinting()
@@ -308,8 +347,18 @@
 }
 
 /// @title Unique extensions for ERC721.
-/// @dev the ERC-165 identifier for this interface is 0x7c3bef89
+/// @dev the ERC-165 identifier for this interface is 0xef1eaacb
 interface ERC721UniqueExtensions is Dummy, ERC165 {
+	/// @notice A descriptive name for a collection of NFTs in this contract
+	/// @dev EVM selector for this function is: 0x06fdde03,
+	///  or in textual repr: name()
+	function name() external view returns (string memory);
+
+	/// @notice An abbreviated name for NFTs in this contract
+	/// @dev EVM selector for this function is: 0x95d89b41,
+	///  or in textual repr: symbol()
+	function symbol() external view returns (string memory);
+
 	/// @notice Transfer ownership of an RFT
 	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`
 	///  is the zero address. Throws if `tokenId` is not a valid RFT.
@@ -352,7 +401,7 @@
 	/// @param tokens array of pairs of token ID and token URI for minted tokens
 	/// @dev EVM selector for this function is: 0x36543006,
 	///  or in textual repr: mintBulkWithTokenURI(address,(uint256,string)[])
-	function mintBulkWithTokenURI(address to, Tuple8[] memory tokens) external returns (bool);
+	function mintBulkWithTokenURI(address to, Tuple6[] memory tokens) external returns (bool);
 
 	/// Returns EVM address for refungible token
 	///
@@ -363,7 +412,7 @@
 }
 
 /// @dev anonymous struct
-struct Tuple8 {
+struct Tuple6 {
 	uint256 field_0;
 	string field_1;
 }
@@ -393,32 +442,6 @@
 	function totalSupply() external view returns (uint256);
 }
 
-/// @dev the ERC-165 identifier for this interface is 0x5b5e139f
-interface ERC721Metadata is Dummy, ERC165 {
-	/// @notice A descriptive name for a collection of RFTs in this contract
-	/// @dev EVM selector for this function is: 0x06fdde03,
-	///  or in textual repr: name()
-	function name() external view returns (string memory);
-
-	/// @notice An abbreviated name for RFTs in this contract
-	/// @dev EVM selector for this function is: 0x95d89b41,
-	///  or in textual repr: symbol()
-	function symbol() external view returns (string memory);
-
-	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
-	///
-	/// @dev If the token has a `url` property and it is not empty, it is returned.
-	///  Else If the collection does not have a property with key `schemaName` or its value is not equal to `ERC721Metadata`, it return an error `tokenURI not set`.
-	///  If the collection property `baseURI` is empty or absent, return "" (empty string)
-	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix
-	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).
-	///
-	/// @return token's const_metadata
-	/// @dev EVM selector for this function is: 0xc87b56dd,
-	///  or in textual repr: tokenURI(uint256)
-	function tokenURI(uint256 tokenId) external view returns (string memory);
-}
-
 /// @dev inlined interface
 interface ERC721Events {
 	event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
@@ -512,11 +535,11 @@
 	Dummy,
 	ERC165,
 	ERC721,
-	ERC721Metadata,
 	ERC721Enumerable,
 	ERC721UniqueExtensions,
-	ERC721Mintable,
+	ERC721UniqueMintable,
 	ERC721Burnable,
+	ERC721Metadata,
 	Collection,
 	TokenProperties
 {}

--- a/tests/src/eth/base.test.ts
+++ b/tests/src/eth/base.test.ts
@@ -23,7 +23,7 @@
 describe('Contract calls', () => {
   let donor: IKeyringPair;
 
-  before(async function() {
+  before(async function () {
     await usingEthPlaygrounds(async (_helper, privateKey) => {
       donor = await privateKey({filename: __filename});
     });
@@ -40,7 +40,12 @@
   itEth('Balance transfer fee is less than 0.2 UNQ', async ({helper}) => {
     const userA = await helper.eth.createAccountWithBalance(donor);
     const userB = helper.eth.createAccount();
-    const cost = await helper.eth.calculateFee({Ethereum: userA}, () => helper.getWeb3().eth.sendTransaction({from: userA, to: userB, value: '1000000', gas: helper.eth.DEFAULT_GAS}));
+    const cost = await helper.eth.calculateFee({Ethereum: userA}, () => helper.getWeb3().eth.sendTransaction({
+      from: userA,
+      to: userB,
+      value: '1000000',
+      gas: helper.eth.DEFAULT_GAS
+    }));
     const balanceB = await helper.balance.getEthereum(userB);
     expect(cost - balanceB < BigInt(0.2 * Number(helper.balance.getOneTokenNominal()))).to.be.true;
   });
@@ -69,51 +74,59 @@
 describe('ERC165 tests', async () => {
   // https://eips.ethereum.org/EIPS/eip-165
 
-  let collection: number;
+  let erc721MetadataCompatibleNftCollectionId: number;
+  let simpleNftCollectionId: number;
   let minter: string;
 
-  function contract(helper: EthUniqueHelper): Contract {
-    return helper.ethNativeContract.collection(helper.ethAddress.fromCollectionId(collection), 'nft', minter);
+  const BASE_URI = 'base/';
+
+  async function checkInterface(helper: EthUniqueHelper, interfaceId: string, simpleResult: boolean, compatibleResult: boolean) {
+    const simple = helper.ethNativeContract.collection(helper.ethAddress.fromCollectionId(simpleNftCollectionId), 'nft', minter);
+    const compatible = helper.ethNativeContract.collection(helper.ethAddress.fromCollectionId(erc721MetadataCompatibleNftCollectionId), 'nft', minter);
+
+    expect(await simple.methods.supportsInterface(interfaceId).call()).to.equal(simpleResult, `empty (not ERC721Metadata compatible) NFT collection returns not ${simpleResult}`);
+    expect(await compatible.methods.supportsInterface(interfaceId).call()).to.equal(compatibleResult, `ERC721Metadata compatible NFT collection returns not ${compatibleResult}`);
   }
 
   before(async () => {
     await usingEthPlaygrounds(async (helper, privateKey) => {
       const donor = await privateKey({filename: __filename});
       const [alice] = await helper.arrange.createAccounts([10n], donor);
-      ({collectionId: collection} = await helper.nft.mintCollection(alice, {name: 'test', description: 'test', tokenPrefix: 'test'}));
+      ({collectionId: simpleNftCollectionId} = await helper.nft.mintCollection(alice, {name: 'test', description: 'test', tokenPrefix: 'test'}));
       minter = helper.eth.createAccount();
+      ({collectionId: erc721MetadataCompatibleNftCollectionId} = await helper.eth.createERC721MetadataCompatibleNFTCollection(minter, 'n', 'd', 'p', BASE_URI));
     });
   });
 
-  itEth('interfaceID == 0xffffffff always false', async ({helper}) => {
-    expect(await contract(helper).methods.supportsInterface('0xffffffff').call()).to.be.false;
+  itEth('nonexistent interfaceID - 0xffffffff - always false', async ({helper}) => {
+    await checkInterface(helper, '0xffffffff', false, false);
   });
 
-  itEth('ERC721 support', async ({helper}) => {
-    expect(await contract(helper).methods.supportsInterface('0x780e9d63').call()).to.be.true;
+  itEth('ERC721 - 0x780e9d63 - support', async ({helper}) => {
+    await checkInterface(helper, '0x780e9d63', true, true);
   });
 
-  itEth('ERC721Metadata support', async ({helper}) => {
-    expect(await contract(helper).methods.supportsInterface('0x5b5e139f').call()).to.be.true;
+  itEth('ERC721Metadata - 0x5b5e139f - support', async ({helper}) => {
+    await checkInterface(helper, '0x5b5e139f', false, true);
   });
 
-  itEth('ERC721Mintable support', async ({helper}) => {
-    expect(await contract(helper).methods.supportsInterface('0x68ccfe89').call()).to.be.true;
+  itEth('ERC721UniqueMintable - 0x476ff149 - support', async ({helper}) => {
+    await checkInterface(helper, '0x476ff149', true, true);
   });
 
-  itEth('ERC721Enumerable support', async ({helper}) => {
-    expect(await contract(helper).methods.supportsInterface('0x780e9d63').call()).to.be.true;
+  itEth('ERC721Enumerable - 0x780e9d63 - support', async ({helper}) => {
+    await checkInterface(helper, '0x780e9d63', true, true);
   });
 
-  itEth('ERC721UniqueExtensions support', async ({helper}) => {
-    expect(await contract(helper).methods.supportsInterface('0xd74d154f').call()).to.be.true;
+  itEth('ERC721UniqueExtensions - 0x4468500d - support', async ({helper}) => {
+    await checkInterface(helper, '0x4468500d', true, true);
   });
 
-  itEth('ERC721Burnable support', async ({helper}) => {
-    expect(await contract(helper).methods.supportsInterface('0x42966c68').call()).to.be.true;
+  itEth('ERC721Burnable - 0x42966c68 - support', async ({helper}) => {
+    await checkInterface(helper, '0x42966c68', true, true);
   });
 
-  itEth('ERC165 support', async ({helper}) => {
-    expect(await contract(helper).methods.supportsInterface('0x01ffc9a7').call()).to.be.true;
+  itEth('ERC165 - 0x01ffc9a7 - support', async ({helper}) => {
+    await checkInterface(helper, '0x01ffc9a7', true, true);
   });
 });

--- a/tests/src/eth/collectionAdmin.test.ts
+++ b/tests/src/eth/collectionAdmin.test.ts
@@ -38,7 +38,7 @@
 
   itEth('Add admin by owner', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
     const newAdmin = helper.eth.createAccount();
@@ -51,7 +51,7 @@
 
   itEth.skip('Add substrate admin by owner', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
     const [newAdmin] = await helper.arrange.createAccounts([10n], donor);
@@ -64,7 +64,7 @@
 
   itEth('Verify owner or admin', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
 
     const newAdmin = helper.eth.createAccount();
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
@@ -75,7 +75,7 @@
 
   itEth('(!negative tests!) Add admin by ADMIN is not allowed', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
 
     const admin = await helper.eth.createAccountWithBalance(donor);
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
@@ -93,7 +93,7 @@
 
   itEth('(!negative tests!) Add admin by USER is not allowed', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
 
     const notAdmin = await helper.eth.createAccountWithBalance(donor);
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
@@ -108,7 +108,7 @@
 
   itEth.skip('(!negative tests!) Add substrate admin by ADMIN is not allowed', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
 
     const admin = await helper.eth.createAccountWithBalance(donor);
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
@@ -126,7 +126,7 @@
 
   itEth.skip('(!negative tests!) Add substrate admin by USER is not allowed', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
 
     const notAdmin0 = await helper.eth.createAccountWithBalance(donor);
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
@@ -150,7 +150,7 @@
 
   itEth('Remove admin by owner', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
 
     const newAdmin = helper.eth.createAccount();
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
@@ -170,7 +170,7 @@
 
   itEth.skip('Remove substrate admin by owner', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
 
     const [newAdmin] = await helper.arrange.createAccounts([10n], donor);
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
@@ -188,7 +188,7 @@
 
   itEth('(!negative tests!) Remove admin by ADMIN is not allowed', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
 
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
@@ -210,7 +210,7 @@
 
   itEth('(!negative tests!) Remove admin by USER is not allowed', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
 
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
@@ -230,7 +230,7 @@
 
   itEth.skip('(!negative tests!) Remove substrate admin by ADMIN is not allowed', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
 
     const [adminSub] = await helper.arrange.createAccounts([10n], donor);
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
@@ -250,7 +250,7 @@
 
   itEth.skip('(!negative tests!) Remove substrate admin by USER is not allowed', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
 
     const [adminSub] = await helper.arrange.createAccounts([10n], donor);
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
@@ -279,10 +279,10 @@
   itEth('Change owner', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const newOwner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
-    await collectionEvm.methods.setOwner(newOwner).send();
+    await collectionEvm.methods.changeCollectionOwner(newOwner).send();
 
     expect(await collectionEvm.methods.isOwnerOrAdmin(owner).call()).to.be.false;
     expect(await collectionEvm.methods.isOwnerOrAdmin(newOwner).call()).to.be.true;
@@ -291,9 +291,9 @@
   itEth('change owner call fee', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const newOwner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
-    const cost = await recordEthFee(helper, owner, () => collectionEvm.methods.setOwner(newOwner).send());
+    const cost = await recordEthFee(helper, owner, () => collectionEvm.methods.changeCollectionOwner(newOwner).send());
     expect(cost < BigInt(0.2 * Number(helper.balance.getOneTokenNominal())));
     expect(cost > 0);
   });
@@ -301,10 +301,10 @@
   itEth('(!negative tests!) call setOwner by non owner', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const newOwner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
-    await expect(collectionEvm.methods.setOwner(newOwner).send({from: newOwner})).to.be.rejected;
+    await expect(collectionEvm.methods.changeCollectionOwner(newOwner).send({from: newOwner})).to.be.rejected;
     expect(await collectionEvm.methods.isOwnerOrAdmin(newOwner).call()).to.be.false;
   });
 });
@@ -321,7 +321,7 @@
   itEth.skip('Change owner', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const [newOwner] = await helper.arrange.createAccounts([10n], donor);
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
     expect(await collectionEvm.methods.isOwnerOrAdmin(owner).call()).to.be.true;
@@ -336,7 +336,7 @@
   itEth.skip('change owner call fee', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const [newOwner] = await helper.arrange.createAccounts([10n], donor);
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
     const cost = await recordEthFee(helper, owner, () => collectionEvm.methods.setOwnerSubstrate(newOwner.addressRaw).send());
@@ -348,7 +348,7 @@
     const owner = await helper.eth.createAccountWithBalance(donor);
     const otherReceiver = await helper.eth.createAccountWithBalance(donor);
     const [newOwner] = await helper.arrange.createAccounts([10n], donor);
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+    const {collectionAddress} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
     await expect(collectionEvm.methods.setOwnerSubstrate(newOwner.addressRaw).send({from: otherReceiver})).to.be.rejected;

--- a/tests/src/eth/collectionHelpersAbi.json
+++ b/tests/src/eth/collectionHelpersAbi.json
@@ -29,33 +29,9 @@
     "inputs": [
       { "internalType": "string", "name": "name", "type": "string" },
       { "internalType": "string", "name": "description", "type": "string" },
-      { "internalType": "string", "name": "tokenPrefix", "type": "string" },
-      { "internalType": "string", "name": "baseUri", "type": "string" }
-    ],
-    "name": "createERC721MetadataCompatibleCollection",
-    "outputs": [{ "internalType": "address", "name": "", "type": "address" }],
-    "stateMutability": "payable",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "string", "name": "name", "type": "string" },
-      { "internalType": "string", "name": "description", "type": "string" },
-      { "internalType": "string", "name": "tokenPrefix", "type": "string" },
-      { "internalType": "string", "name": "baseUri", "type": "string" }
-    ],
-    "name": "createERC721MetadataCompatibleRFTCollection",
-    "outputs": [{ "internalType": "address", "name": "", "type": "address" }],
-    "stateMutability": "payable",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "string", "name": "name", "type": "string" },
-      { "internalType": "string", "name": "description", "type": "string" },
       { "internalType": "string", "name": "tokenPrefix", "type": "string" }
     ],
-    "name": "createNonfungibleCollection",
+    "name": "createNFTCollection",
     "outputs": [{ "internalType": "address", "name": "", "type": "address" }],
     "stateMutability": "payable",
     "type": "function"
@@ -86,6 +62,16 @@
   },
   {
     "inputs": [
+      { "internalType": "address", "name": "collection", "type": "address" },
+      { "internalType": "string", "name": "baseUri", "type": "string" }
+    ],
+    "name": "makeCollectionERC721MetadataCompatible",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
       { "internalType": "bytes4", "name": "interfaceID", "type": "bytes4" }
     ],
     "name": "supportsInterface",

--- a/tests/src/eth/collectionProperties.test.ts
+++ b/tests/src/eth/collectionProperties.test.ts
@@ -14,8 +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/>.
 
-import {itEth, usingEthPlaygrounds, expect} from './util';
+import {itEth, usingEthPlaygrounds, expect, EthUniqueHelper} from './util';
+import {Pallets} from '../util';
+import {IProperty, ITokenPropertyPermission} from '../util/playgrounds/types';
 import {IKeyringPair} from '@polkadot/types/types';
+import {Contract} from 'web3-eth-contract';
 
 describe('EVM collection properties', () => {
   let donor: IKeyringPair;
@@ -30,7 +33,7 @@
 
   itEth('Can be set', async({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
-    const collection = await helper.nft.mintCollection(alice, {name: 'name', description: 'test', tokenPrefix: 'test'});
+    const collection = await helper.nft.mintCollection(alice, {name: 'name', description: 'test', tokenPrefix: 'test', properties: []});
     await collection.addAdmin(alice, {Ethereum: caller});
 
     const address = helper.ethAddress.fromCollectionId(collection.collectionId);
@@ -70,3 +73,92 @@
     expect(value).to.equal(helper.getWeb3().utils.toHex('testValue'));
   });
 });
+
+describe('Supports ERC721Metadata', () => {
+  let donor: IKeyringPair;
+
+  before(async function() {
+    await usingEthPlaygrounds(async (_helper, privateKey) => {
+      donor = await privateKey({filename: __filename});
+    });
+  });
+
+  const checkERC721Metadata = async (helper: EthUniqueHelper, mode: 'nft' | 'rft') => {
+    const caller = await helper.eth.createAccountWithBalance(donor);
+    const bruh = await helper.eth.createAccountWithBalance(donor);
+
+    const BASE_URI = 'base/'
+    const SUFFIX = 'suffix1'
+    const URI = 'uri1'
+
+    const collectionHelpers = helper.ethNativeContract.collectionHelpers(caller);
+    const creatorMethod = mode === 'rft' ? 'createRFTCollection' : 'createNFTCollection'
+
+    const {collectionId, collectionAddress} = await helper.eth[creatorMethod](caller, 'n', 'd', 'p')
+
+    const contract = helper.ethNativeContract.collectionById(collectionId, mode, caller);
+    await contract.methods.addCollectionAdmin(bruh).send(); // to check that admin will work too
+
+    const collection1 = await helper.nft.getCollectionObject(collectionId);
+    const data1 = await collection1.getData()
+    expect(data1?.raw.flags.erc721metadata).to.be.false;
+    expect(await contract.methods.supportsInterface('0x5b5e139f').call()).to.be.false;
+
+    await collectionHelpers.methods.makeCollectionERC721MetadataCompatible(collectionAddress, BASE_URI)
+      .send({from: bruh});
+
+    expect(await contract.methods.supportsInterface('0x5b5e139f').call()).to.be.true;
+
+    const collection2 = await helper.nft.getCollectionObject(collectionId);
+    const data2 = await collection2.getData()
+    expect(data2?.raw.flags.erc721metadata).to.be.true;
+
+    const TPPs = data2?.raw.tokenPropertyPermissions
+    expect(TPPs?.length).to.equal(2);
+
+    expect(TPPs.find((tpp: ITokenPropertyPermission) => {
+      return tpp.key === "URI" && tpp.permission.mutable && tpp.permission.collectionAdmin && !tpp.permission.tokenOwner
+    })).to.be.not.null
+
+    expect(TPPs.find((tpp: ITokenPropertyPermission) => {
+      return tpp.key === "URISuffix" && tpp.permission.mutable && tpp.permission.collectionAdmin && !tpp.permission.tokenOwner
+    })).to.be.not.null
+
+    expect(data2?.raw.properties?.find((property: IProperty) => {
+      return property.key === "baseURI" && property.value === BASE_URI
+    })).to.be.not.null
+
+    const token1Result = await contract.methods.mint(bruh).send();
+    const tokenId1 = token1Result.events.Transfer.returnValues.tokenId;
+
+    expect(await contract.methods.tokenURI(tokenId1).call()).to.equal(BASE_URI);
+
+    await contract.methods.setProperty(tokenId1, "URISuffix", Buffer.from(SUFFIX)).send();
+    expect(await contract.methods.tokenURI(tokenId1).call()).to.equal(BASE_URI + SUFFIX);
+
+    await contract.methods.setProperty(tokenId1, "URI", Buffer.from(URI)).send();
+    expect(await contract.methods.tokenURI(tokenId1).call()).to.equal(URI);
+
+    await contract.methods.deleteProperty(tokenId1, "URI").send();
+    expect(await contract.methods.tokenURI(tokenId1).call()).to.equal(BASE_URI + SUFFIX);
+
+    const token2Result = await contract.methods.mintWithTokenURI(bruh, URI).send();
+    const tokenId2 = token2Result.events.Transfer.returnValues.tokenId;
+
+    expect(await contract.methods.tokenURI(tokenId2).call()).to.equal(URI);
+
+    await contract.methods.deleteProperty(tokenId2, "URI").send();
+    expect(await contract.methods.tokenURI(tokenId2).call()).to.equal(BASE_URI);
+
+    await contract.methods.setProperty(tokenId2, "URISuffix", Buffer.from(SUFFIX)).send();
+    expect(await contract.methods.tokenURI(tokenId2).call()).to.equal(BASE_URI + SUFFIX);
+  }
+
+  itEth('ERC721Metadata property can be set for NFT collection', async({helper}) => {
+    await checkERC721Metadata(helper, 'nft');
+  });
+
+  itEth.ifWithPallets('ERC721Metadata property can be set for RFT collection', [Pallets.ReFungible], async({helper}) => {
+    await checkERC721Metadata(helper, 'rft');
+  });
+});

--- a/tests/src/eth/collectionSponsoring.test.ts
+++ b/tests/src/eth/collectionSponsoring.test.ts
@@ -44,9 +44,8 @@
 
     await collection.addToAllowList(alice, {Ethereum: minter});
 
-    const nextTokenId = await contract.methods.nextTokenId().call();
-    expect(nextTokenId).to.equal('1');
-    const result = await contract.methods.mint(minter, nextTokenId).send();
+    const result = await contract.methods.mint(minter).send();
+
     const events = helper.eth.normalizeEvents(result.events);
     expect(events).to.be.deep.equal([
       {
@@ -55,7 +54,7 @@
         args: {
           from: '0x0000000000000000000000000000000000000000',
           to: minter,
-          tokenId: nextTokenId,
+          tokenId: '1',
         },
       },
     ]);
@@ -65,7 +64,7 @@
   // itWeb3('Set substrate sponsor', async ({api, web3, privateKeyWrapper}) => {
   //   const owner = await createEthAccountWithBalance(api, web3, privateKeyWrapper);
   //   const collectionHelpers = evmCollectionHelpers(web3, owner);
-  //   let result = await collectionHelpers.methods.createNonfungibleCollection('Sponsor collection', '1', '1').send();
+  //   let result = await collectionHelpers.methods.createNFTCollection('Sponsor collection', '1', '1').send();
   //   const {collectionIdAddress, collectionId} = await getCollectionAddressFromResult(api, result);
   //   const sponsor = privateKeyWrapper('//Alice');
   //   const collectionEvm = evmCollection(web3, owner, collectionIdAddress);
@@ -73,11 +72,11 @@
   //   expect(await collectionEvm.methods.hasCollectionPendingSponsor().call({from: owner})).to.be.false;
   //   result = await collectionEvm.methods.setCollectionSponsorSubstrate(sponsor.addressRaw).send({from: owner});
   //   expect(await collectionEvm.methods.hasCollectionPendingSponsor().call({from: owner})).to.be.true;
-    
+
   //   const confirmTx = await api.tx.unique.confirmSponsorship(collectionId);
   //   await submitTransactionAsync(sponsor, confirmTx);
   //   expect(await collectionEvm.methods.hasCollectionPendingSponsor().call({from: owner})).to.be.false;
-    
+
   //   const sponsorTuple = await collectionEvm.methods.collectionSponsor().call({from: owner});
   //   expect(bigIntToSub(api, BigInt(sponsorTuple[1]))).to.be.eq(sponsor.address);
   // });
@@ -86,7 +85,7 @@
     const owner = await helper.eth.createAccountWithBalance(donor);
     const collectionHelpers = helper.ethNativeContract.collectionHelpers(owner);
 
-    let result = await collectionHelpers.methods.createNonfungibleCollection('Sponsor collection', '1', '1').send({value: Number(2n * nominal)});
+    let result = await collectionHelpers.methods.createNFTCollection('Sponsor collection', '1', '1').send({value: Number(2n * nominal)});
     const collectionIdAddress = helper.ethAddress.normalizeAddress(result.events.CollectionCreated.returnValues.collectionId);
     const sponsor = await helper.eth.createAccountWithBalance(donor);
     const collectionEvm = helper.ethNativeContract.collection(collectionIdAddress, 'nft', owner);
@@ -94,28 +93,26 @@
     expect(await collectionEvm.methods.hasCollectionPendingSponsor().call({from: owner})).to.be.false;
     result = await collectionEvm.methods.setCollectionSponsor(sponsor).send({from: owner});
     expect(await collectionEvm.methods.hasCollectionPendingSponsor().call({from: owner})).to.be.true;
-    
+
     await collectionEvm.methods.confirmCollectionSponsorship().send({from: sponsor});
     expect(await collectionEvm.methods.hasCollectionPendingSponsor().call({from: owner})).to.be.false;
-    
+
     await collectionEvm.methods.removeCollectionSponsor().send({from: owner});
-    
+
     const sponsorTuple = await collectionEvm.methods.collectionSponsor().call({from: owner});
     expect(sponsorTuple.field_0).to.be.eq('0x0000000000000000000000000000000000000000');
   });
 
   itEth('Sponsoring collection from evm address via access list', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const collectionHelpers = helper.ethNativeContract.collectionHelpers(owner);
 
-    let result = await collectionHelpers.methods.createNonfungibleCollection('Sponsor collection', '1', '1').send({value: Number(2n * nominal)});
-    const collectionIdAddress = helper.ethAddress.normalizeAddress(result.events.CollectionCreated.returnValues.collectionId);
-    const collectionId = helper.ethAddress.extractCollectionId(collectionIdAddress);
+    const {collectionId, collectionAddress} = await helper.eth.createERC721MetadataCompatibleNFTCollection(owner, 'Sponsor collection', '1', '1', '');
+
     const collection = helper.nft.getCollectionObject(collectionId);
     const sponsor = await helper.eth.createAccountWithBalance(donor);
-    const collectionEvm = helper.ethNativeContract.collection(collectionIdAddress, 'nft', owner);
+    const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
-    result = await collectionEvm.methods.setCollectionSponsor(sponsor).send({from: owner});
+    await collectionEvm.methods.setCollectionSponsor(sponsor).send({from: owner});
     let collectionData = (await collection.getData())!;
     expect(collectionData.raw.sponsorship.Unconfirmed).to.be.eq(helper.address.ethToSubstrate(sponsor, true));
     await expect(collectionEvm.methods.confirmCollectionSponsorship().call()).to.be.rejectedWith('caller is not set as sponsor');
@@ -144,23 +141,17 @@
     const sponsorBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsor));
 
     {
-      const nextTokenId = await collectionEvm.methods.nextTokenId().call();
-      expect(nextTokenId).to.be.equal('1');
-      const result = await collectionEvm.methods.mintWithTokenURI(
-        user,
-        nextTokenId,
-        'Test URI',
-      ).send({from: user});
+      const result = await collectionEvm.methods.mintWithTokenURI(user, 'Test URI').send({from: user});
       const events = helper.eth.normalizeEvents(result.events);
 
       expect(events).to.be.deep.equal([
         {
-          address: collectionIdAddress,
+          address: collectionAddress,
           event: 'Transfer',
           args: {
             from: '0x0000000000000000000000000000000000000000',
             to: user,
-            tokenId: nextTokenId,
+            tokenId: '1',
           },
         },
       ]);
@@ -178,16 +169,16 @@
   // itWeb3('Sponsoring collection from substrate address via access list', async ({api, web3, privateKeyWrapper}) => {
   //   const owner = await createEthAccountWithBalance(api, web3, privateKeyWrapper);
   //   const collectionHelpers = evmCollectionHelpers(web3, owner);
-  //   const result = await collectionHelpers.methods.createNonfungibleCollection('Sponsor collection', '1', '1').send();
+  //   const result = await collectionHelpers.methods.createERC721MetadataCompatibleNFTCollection('Sponsor collection', '1', '1', '').send();
   //   const {collectionIdAddress, collectionId} = await getCollectionAddressFromResult(api, result);
   //   const sponsor = privateKeyWrapper('//Alice');
   //   const collectionEvm = evmCollection(web3, owner, collectionIdAddress);
 
   //   await collectionEvm.methods.setCollectionSponsorSubstrate(sponsor.addressRaw).send({from: owner});
-    
+
   //   const confirmTx = await api.tx.unique.confirmSponsorship(collectionId);
   //   await submitTransactionAsync(sponsor, confirmTx);
-    
+
   //   const user = createEthAccount(web3);
   //   const nextTokenId = await collectionEvm.methods.nextTokenId().call();
   //   expect(nextTokenId).to.be.equal('1');
@@ -232,39 +223,32 @@
 
   itEth('Check that transaction via EVM spend money from sponsor address', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const collectionHelpers = helper.ethNativeContract.collectionHelpers(owner);
 
-    let result = await collectionHelpers.methods.createNonfungibleCollection('Sponsor collection', '1', '1').send({value: Number(2n * nominal)});
-    const collectionIdAddress = helper.ethAddress.normalizeAddress(result.events.CollectionCreated.returnValues.collectionId);
-    const collectionId = helper.ethAddress.extractCollectionId(collectionIdAddress);
+    const {collectionAddress, collectionId} = await helper.eth.createERC721MetadataCompatibleNFTCollection(owner,'Sponsor collection', '1', '1', '');
     const collection = helper.nft.getCollectionObject(collectionId);
     const sponsor = await helper.eth.createAccountWithBalance(donor);
-    const collectionEvm = helper.ethNativeContract.collection(collectionIdAddress, 'nft', owner);
+    const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
 
-    result = await collectionEvm.methods.setCollectionSponsor(sponsor).send();
+    await collectionEvm.methods.setCollectionSponsor(sponsor).send();
     let collectionData = (await collection.getData())!;
     expect(collectionData.raw.sponsorship.Unconfirmed).to.be.eq(helper.address.ethToSubstrate(sponsor, true));
     await expect(collectionEvm.methods.confirmCollectionSponsorship().call()).to.be.rejectedWith('caller is not set as sponsor');
 
-    const sponsorCollection = helper.ethNativeContract.collection(collectionIdAddress, 'nft', sponsor);
+    const sponsorCollection = helper.ethNativeContract.collection(collectionAddress, 'nft', sponsor);
     await sponsorCollection.methods.confirmCollectionSponsorship().send();
     collectionData = (await collection.getData())!;
     expect(collectionData.raw.sponsorship.Confirmed).to.be.eq(helper.address.ethToSubstrate(sponsor, true));
 
     const user = helper.eth.createAccount();
     await collectionEvm.methods.addCollectionAdmin(user).send();
-    
+
     const ownerBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
     const sponsorBalanceBefore = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsor));
 
-    const userCollectionEvm = helper.ethNativeContract.collection(collectionIdAddress, 'nft', user);
-    const nextTokenId = await userCollectionEvm.methods.nextTokenId().call();
-    expect(nextTokenId).to.be.equal('1');
-    result = await userCollectionEvm.methods.mintWithTokenURI(
-      user,
-      nextTokenId,
-      'Test URI',
-    ).send();
+    const userCollectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', user);
+
+    let result = await userCollectionEvm.methods.mintWithTokenURI(user, 'Test URI',).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
 
     const events = helper.eth.normalizeEvents(result.events);
     const address = helper.ethAddress.fromCollectionId(collectionId);
@@ -276,12 +260,12 @@
         args: {
           from: '0x0000000000000000000000000000000000000000',
           to: user,
-          tokenId: nextTokenId,
+          tokenId: '1',
         },
       },
     ]);
-    expect(await userCollectionEvm.methods.tokenURI(nextTokenId).call()).to.be.equal('Test URI');
-  
+    expect(await userCollectionEvm.methods.tokenURI(tokenId).call()).to.be.equal('Test URI');
+
     const ownerBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(owner));
     expect(ownerBalanceAfter).to.be.eq(ownerBalanceBefore);
     const sponsorBalanceAfter = await helper.balance.getSubstrate(helper.address.ethToSubstrate(sponsor));

--- a/tests/src/eth/createNFTCollection.test.ts
+++ b/tests/src/eth/createNFTCollection.test.ts
@@ -35,13 +35,49 @@
     const description = 'Some description';
     const prefix = 'token prefix';
 
-    const {collectionId} = await helper.eth.createNonfungibleCollection(owner, name, description, prefix);
+    const {collectionId} = await helper.eth.createNFTCollection(owner, name, description, prefix);
     const data = (await helper.rft.getData(collectionId))!;
+    const collection = helper.nft.getCollectionObject(collectionId);
+    
+    expect(data.name).to.be.eq(name);
+    expect(data.description).to.be.eq(description);
+    expect(data.raw.tokenPrefix).to.be.eq(prefix);
+    expect(data.raw.mode).to.be.eq('NFT');
+
+    const options = await collection.getOptions();
+
+    expect(options.tokenPropertyPermissions).to.be.empty;
+  });
+
+  itEth('Create collection with properties', async ({helper}) => {
+    const owner = await helper.eth.createAccountWithBalance(donor);
+
+    const name = 'CollectionEVM';
+    const description = 'Some description';
+    const prefix = 'token prefix';
+    const baseUri = 'BaseURI';
+
+    const {collectionId} = await helper.eth.createERC721MetadataCompatibleNFTCollection(owner, name, description, prefix, baseUri);
+
+    const collection = helper.nft.getCollectionObject(collectionId);
+    const data = (await collection.getData())!;
     
     expect(data.name).to.be.eq(name);
     expect(data.description).to.be.eq(description);
     expect(data.raw.tokenPrefix).to.be.eq(prefix);
     expect(data.raw.mode).to.be.eq('NFT');
+
+    const options = await collection.getOptions();
+    expect(options.tokenPropertyPermissions).to.be.deep.equal([
+      {
+        key: 'URI',
+        permission: {mutable: true, collectionAdmin: true, tokenOwner: false},
+      },
+      {
+        key: 'URISuffix',
+        permission: {mutable: true, collectionAdmin: true, tokenOwner: false},
+      },
+    ]);
   });
 
   // this test will occasionally fail when in async environment.
@@ -57,7 +93,7 @@
       .call()).to.be.false;
 
     await collectionHelpers.methods
-      .createNonfungibleCollection('A', 'A', 'A')
+      .createNFTCollection('A', 'A', 'A')
       .send({value: Number(2n * helper.balance.getOneTokenNominal())});
     
     expect(await collectionHelpers.methods
@@ -69,7 +105,7 @@
     const owner = await helper.eth.createAccountWithBalance(donor);
     const sponsor = await helper.eth.createAccountWithBalance(donor);
     const ss58Format = helper.chain.getChainProperties().ss58Format;
-    const {collectionId, collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'Sponsor', 'absolutely anything', 'ROC');
+    const {collectionId, collectionAddress} = await helper.eth.createNFTCollection(owner, 'Sponsor', 'absolutely anything', 'ROC');
 
     const collection = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
     await collection.methods.setCollectionSponsor(sponsor).send();
@@ -88,7 +124,7 @@
 
   itEth('Set limits', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionId, collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'Limits', 'absolutely anything', 'FLO');
+    const {collectionId, collectionAddress} = await helper.eth.createNFTCollection(owner, 'Limits', 'absolutely anything', 'FLO');
     const limits = {
       accountTokenOwnershipLimit: 1000,
       sponsoredDataSize: 1024,
@@ -131,7 +167,7 @@
       .methods.isCollectionExist(collectionAddressForNonexistentCollection).call())
       .to.be.false;
     
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'Exister', 'absolutely anything', 'EVC');
+    const {collectionAddress} = await helper.eth.createNFTCollection(owner, 'Exister', 'absolutely anything', 'EVC');
     expect(await helper.ethNativeContract.collectionHelpers(collectionAddress)
       .methods.isCollectionExist(collectionAddress).call())
       .to.be.true;
@@ -159,7 +195,7 @@
       const tokenPrefix = 'A';
 
       await expect(collectionHelper.methods
-        .createNonfungibleCollection(collectionName, description, tokenPrefix)
+        .createNFTCollection(collectionName, description, tokenPrefix)
         .call({value: Number(2n * nominal)})).to.be.rejectedWith('name is too long. Max length is ' + MAX_NAME_LENGTH);
       
     }
@@ -169,7 +205,7 @@
       const description = 'A'.repeat(MAX_DESCRIPTION_LENGTH + 1);
       const tokenPrefix = 'A';
       await expect(collectionHelper.methods
-        .createNonfungibleCollection(collectionName, description, tokenPrefix)
+        .createNFTCollection(collectionName, description, tokenPrefix)
         .call({value: Number(2n * nominal)})).to.be.rejectedWith('description is too long. Max length is ' + MAX_DESCRIPTION_LENGTH);
     }
     {
@@ -178,7 +214,7 @@
       const description = 'A';
       const tokenPrefix = 'A'.repeat(MAX_TOKEN_PREFIX_LENGTH + 1);
       await expect(collectionHelper.methods
-        .createNonfungibleCollection(collectionName, description, tokenPrefix)
+        .createNFTCollection(collectionName, description, tokenPrefix)
         .call({value: Number(2n * nominal)})).to.be.rejectedWith('token_prefix is too long. Max length is ' + MAX_TOKEN_PREFIX_LENGTH);
     }
   });
@@ -187,14 +223,14 @@
     const owner = await helper.eth.createAccountWithBalance(donor);
     const collectionHelper = helper.ethNativeContract.collectionHelpers(owner);
     await expect(collectionHelper.methods
-      .createNonfungibleCollection('Peasantry', 'absolutely anything', 'CVE')
+      .createNFTCollection('Peasantry', 'absolutely anything', 'CVE')
       .call({value: Number(1n * nominal)})).to.be.rejectedWith('Sent amount not equals to collection creation price (2000000000000000000)');
   });
 
   itEth('(!negative test!) Check owner', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const malfeasant = helper.eth.createAccount();
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'Transgressed', 'absolutely anything', 'COR');
+    const {collectionAddress} = await helper.eth.createNFTCollection(owner, 'Transgressed', 'absolutely anything', 'COR');
     const malfeasantCollection = helper.ethNativeContract.collection(collectionAddress, 'nft', malfeasant);
     const EXPECTED_ERROR = 'NoPermission';
     {
@@ -217,10 +253,10 @@
 
   itEth('(!negative test!) Set limits', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'Limits', 'absolutely anything', 'OLF');
+    const {collectionAddress} = await helper.eth.createNFTCollection(owner, 'Limits', 'absolutely anything', 'OLF');
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
     await expect(collectionEvm.methods
       .setCollectionLimit('badLimit', 'true')
       .call()).to.be.rejectedWith('unknown boolean limit "badLimit"');
   });
-});
\ No newline at end of file
+});

--- a/tests/src/eth/createRFTCollection.test.ts
+++ b/tests/src/eth/createRFTCollection.test.ts
@@ -37,13 +37,51 @@
     const description = 'Some description';
     const prefix = 'token prefix';
   
-    const {collectionId} = await helper.eth.createRefungibleCollection(owner, name, description, prefix);
+    const {collectionId} = await helper.eth.createRFTCollection(owner, name, description, prefix);
     const data = (await helper.rft.getData(collectionId))!;
+    const collection = helper.rft.getCollectionObject(collectionId);
+
+    expect(data.name).to.be.eq(name);
+    expect(data.description).to.be.eq(description);
+    expect(data.raw.tokenPrefix).to.be.eq(prefix);
+    expect(data.raw.mode).to.be.eq('ReFungible');
+
+    const options = await collection.getOptions();
+
+    expect(options.tokenPropertyPermissions).to.be.empty;
+  });
+
+  
+
+  itEth('Create collection with properties', async ({helper}) => {
+    const owner = await helper.eth.createAccountWithBalance(donor);
+
+    const name = 'CollectionEVM';
+    const description = 'Some description';
+    const prefix = 'token prefix';
+    const baseUri = 'BaseURI';
+
+    const {collectionId} = await helper.eth.createERC721MetadataCompatibleRFTCollection(owner, name, description, prefix, baseUri);
 
+    const collection = helper.rft.getCollectionObject(collectionId);
+    const data = (await collection.getData())!;
+    
     expect(data.name).to.be.eq(name);
     expect(data.description).to.be.eq(description);
     expect(data.raw.tokenPrefix).to.be.eq(prefix);
     expect(data.raw.mode).to.be.eq('ReFungible');
+
+    const options = await collection.getOptions();
+    expect(options.tokenPropertyPermissions).to.be.deep.equal([
+      {
+        key: 'URI',
+        permission: {mutable: true, collectionAdmin: true, tokenOwner: false},
+      },
+      {
+        key: 'URISuffix',
+        permission: {mutable: true, collectionAdmin: true, tokenOwner: false},
+      },
+    ]);
   });
   
   // this test will occasionally fail when in async environment.
@@ -71,7 +109,7 @@
     const owner = await helper.eth.createAccountWithBalance(donor);
     const sponsor = await helper.eth.createAccountWithBalance(donor);
     const ss58Format = helper.chain.getChainProperties().ss58Format;
-    const {collectionId, collectionAddress} = await helper.eth.createRefungibleCollection(owner, 'Sponsor', 'absolutely anything', 'ENVY');
+    const {collectionId, collectionAddress} = await helper.eth.createRFTCollection(owner, 'Sponsor', 'absolutely anything', 'ENVY');
 
     const collection = helper.ethNativeContract.collection(collectionAddress, 'rft', owner);
     await collection.methods.setCollectionSponsor(sponsor).send();
@@ -90,7 +128,7 @@
 
   itEth('Set limits', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionId, collectionAddress} = await helper.eth.createRefungibleCollection(owner, 'Limits', 'absolutely anything', 'INSI');
+    const {collectionId, collectionAddress} = await helper.eth.createRFTCollection(owner, 'Limits', 'absolutely anything', 'INSI');
     const limits = {
       accountTokenOwnershipLimit: 1000,
       sponsoredDataSize: 1024,
@@ -133,7 +171,7 @@
       .methods.isCollectionExist(collectionAddressForNonexistentCollection).call())
       .to.be.false;
     
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(owner, 'Exister', 'absolutely anything', 'WIWT');
+    const {collectionAddress} = await helper.eth.createRFTCollection(owner, 'Exister', 'absolutely anything', 'WIWT');
     expect(await helper.ethNativeContract.collectionHelpers(collectionAddress)
       .methods.isCollectionExist(collectionAddress).call())
       .to.be.true;
@@ -196,7 +234,7 @@
   itEth('(!negative test!) Check owner', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const peasant = helper.eth.createAccount();
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(owner, 'Transgressed', 'absolutely anything', 'YVNE');
+    const {collectionAddress} = await helper.eth.createRFTCollection(owner, 'Transgressed', 'absolutely anything', 'YVNE');
     const peasantCollection = helper.ethNativeContract.collection(collectionAddress, 'rft', peasant);
     const EXPECTED_ERROR = 'NoPermission';
     {
@@ -219,7 +257,7 @@
 
   itEth('(!negative test!) Set limits', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(owner, 'Limits', 'absolutely anything', 'ISNI');
+    const {collectionAddress} = await helper.eth.createRFTCollection(owner, 'Limits', 'absolutely anything', 'ISNI');
     const collectionEvm = helper.ethNativeContract.collection(collectionAddress, 'rft', owner);
     await expect(collectionEvm.methods
       .setCollectionLimit('badLimit', 'true')

--- a/tests/src/eth/evmCoder.test.ts
+++ b/tests/src/eth/evmCoder.test.ts
@@ -65,7 +65,7 @@
   
   itEth('Call non-existing function', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const collection = await helper.eth.createNonfungibleCollection(owner, 'EVMCODER', '', 'TEST');
+    const collection = await helper.eth.createNFTCollection(owner, 'EVMCODER', '', 'TEST');
     const contract = await helper.ethContract.deployByCode(owner, 'Test', getContractSource(collection.collectionAddress, '0x1bfed5D614b886b9Ab2eA4CBAc22A96B7EC29c9c'));
     const testContract = await helper.ethContract.deployByCode(owner, 'Test', getContractSource(collection.collectionAddress, contract.options.address));
     {

--- a/tests/src/eth/fractionalizer/Fractionalizer.sol
+++ b/tests/src/eth/fractionalizer/Fractionalizer.sol
@@ -124,8 +124,7 @@
 		address rftTokenAddress;
 		UniqueRefungibleToken rftTokenContract;
 		if (nft2rftMapping[_collection][_token] == 0) {
-			rftTokenId = rftCollectionContract.nextTokenId();
-			rftCollectionContract.mint(address(this), rftTokenId);
+            rftTokenId = rftCollectionContract.mint(address(this));
 			rftTokenAddress = rftCollectionContract.tokenContractAddress(rftTokenId);
 			nft2rftMapping[_collection][_token] = rftTokenId;
 			rft2nftMapping[rftTokenAddress] = Token(_collection, _token);

--- a/tests/src/eth/fractionalizer/fractionalizer.test.ts
+++ b/tests/src/eth/fractionalizer/fractionalizer.test.ts
@@ -62,10 +62,10 @@
 const mintRFTToken = async (helper: EthUniqueHelper, owner: string, fractionalizer: Contract, amount: bigint): Promise<{
   nftCollectionAddress: string, nftTokenId: number, rftTokenAddress: string
 }> => {
-  const nftCollection = await helper.eth.createNonfungibleCollection(owner, 'nft', 'NFT collection', 'NFT');
+  const nftCollection = await helper.eth.createNFTCollection(owner, 'nft', 'NFT collection', 'NFT');
   const nftContract = helper.ethNativeContract.collection(nftCollection.collectionAddress, 'nft', owner);
-  const nftTokenId = await nftContract.methods.nextTokenId().call();
-  await nftContract.methods.mint(owner, nftTokenId).send({from: owner});
+  const mintResult = await nftContract.methods.mint(owner).send({from: owner});
+  const nftTokenId = mintResult.events.Transfer.returnValues.tokenId;
 
   await fractionalizer.methods.setNftCollectionIsAllowed(nftCollection.collectionAddress, true).send({from: owner});
   await nftContract.methods.approve(fractionalizer.options.address, nftTokenId).send({from: owner});
@@ -92,7 +92,7 @@
   itEth('Set RFT collection', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor, 10n);
     const fractionalizer = await deployContract(helper, owner);
-    const rftCollection = await helper.eth.createRefungibleCollection(owner, 'rft', 'RFT collection', 'RFT');
+    const rftCollection = await helper.eth.createRFTCollection(owner, 'rft', 'RFT collection', 'RFT');
     const rftContract = helper.ethNativeContract.collection(rftCollection.collectionAddress, 'rft', owner);
 
     await rftContract.methods.addCollectionAdmin(fractionalizer.options.address).send({from: owner});
@@ -121,7 +121,7 @@
   itEth('Set Allowlist', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
     const {contract: fractionalizer} = await initContract(helper, owner);
-    const nftCollection = await helper.eth.createNonfungibleCollection(owner, 'nft', 'NFT collection', 'NFT');
+    const nftCollection = await helper.eth.createNFTCollection(owner, 'nft', 'NFT collection', 'NFT');
 
     const result1 = await fractionalizer.methods.setNftCollectionIsAllowed(nftCollection.collectionAddress, true).send({from: owner});
     expect(result1.events).to.be.like({
@@ -146,10 +146,10 @@
   itEth('NFT to RFT', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
 
-    const nftCollection = await helper.eth.createNonfungibleCollection(owner, 'nft', 'NFT collection', 'NFT');
+    const nftCollection = await helper.eth.createNFTCollection(owner, 'nft', 'NFT collection', 'NFT');
     const nftContract = helper.ethNativeContract.collection(nftCollection.collectionAddress, 'nft', owner);
-    const nftTokenId = await nftContract.methods.nextTokenId().call();
-    await nftContract.methods.mint(owner, nftTokenId).send({from: owner});
+    const mintResult = await nftContract.methods.mint(owner).send({from: owner});
+    const nftTokenId = mintResult.events.Transfer.returnValues.tokenId;
 
     const {contract: fractionalizer} = await initContract(helper, owner);
 
@@ -231,7 +231,7 @@
 
   itEth('call setRFTCollection twice', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
-    const rftCollection = await helper.eth.createRefungibleCollection(owner, 'rft', 'RFT collection', 'RFT');
+    const rftCollection = await helper.eth.createRFTCollection(owner, 'rft', 'RFT collection', 'RFT');
     const refungibleContract = helper.ethNativeContract.collection(rftCollection.collectionAddress, 'rft', owner);
 
     const fractionalizer = await deployContract(helper, owner);
@@ -244,7 +244,7 @@
 
   itEth('call setRFTCollection with NFT collection', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
-    const nftCollection = await helper.eth.createNonfungibleCollection(owner, 'nft', 'NFT collection', 'NFT');
+    const nftCollection = await helper.eth.createNFTCollection(owner, 'nft', 'NFT collection', 'NFT');
     const nftContract = helper.ethNativeContract.collection(nftCollection.collectionAddress, 'nft', owner);
 
     const fractionalizer = await deployContract(helper, owner);
@@ -257,7 +257,7 @@
   itEth('call setRFTCollection while not collection admin', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
     const fractionalizer = await deployContract(helper, owner);
-    const rftCollection = await helper.eth.createRefungibleCollection(owner, 'rft', 'RFT collection', 'RFT');
+    const rftCollection = await helper.eth.createRFTCollection(owner, 'rft', 'RFT collection', 'RFT');
 
     await expect(fractionalizer.methods.setRFTCollection(rftCollection.collectionAddress).call())
       .to.be.rejectedWith(/Fractionalizer contract should be an admin of the collection$/g);
@@ -278,10 +278,10 @@
   itEth('call nft2rft without setting RFT collection for contract', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
 
-    const nftCollection = await helper.eth.createNonfungibleCollection(owner, 'nft', 'NFT collection', 'NFT');
+    const nftCollection = await helper.eth.createNFTCollection(owner, 'nft', 'NFT collection', 'NFT');
     const nftContract = helper.ethNativeContract.collection(nftCollection.collectionAddress, 'nft', owner);
-    const nftTokenId = await nftContract.methods.nextTokenId().call();
-    await nftContract.methods.mint(owner, nftTokenId).send({from: owner});
+    const mintResult = await nftContract.methods.mint(owner).send({from: owner});
+    const nftTokenId = mintResult.events.Transfer.returnValues.tokenId;
 
     const fractionalizer = await deployContract(helper, owner);
 
@@ -293,10 +293,10 @@
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
     const nftOwner = await helper.eth.createAccountWithBalance(donor, 10n);
 
-    const nftCollection = await helper.eth.createNonfungibleCollection(owner, 'nft', 'NFT collection', 'NFT');
+    const nftCollection = await helper.eth.createNFTCollection(owner, 'nft', 'NFT collection', 'NFT');
     const nftContract = helper.ethNativeContract.collection(nftCollection.collectionAddress, 'nft', owner);
-    const nftTokenId = await nftContract.methods.nextTokenId().call();
-    await nftContract.methods.mint(owner, nftTokenId).send({from: owner});
+    const mintResult = await nftContract.methods.mint(owner).send({from: owner});
+    const nftTokenId = mintResult.events.Transfer.returnValues.tokenId;
     await nftContract.methods.transfer(nftOwner, 1).send({from: owner});
 
 
@@ -310,10 +310,10 @@
   itEth('call nft2rft while not in list of allowed accounts', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
 
-    const nftCollection = await helper.eth.createNonfungibleCollection(owner, 'nft', 'NFT collection', 'NFT');
+    const nftCollection = await helper.eth.createNFTCollection(owner, 'nft', 'NFT collection', 'NFT');
     const nftContract = helper.ethNativeContract.collection(nftCollection.collectionAddress, 'nft', owner);
-    const nftTokenId = await nftContract.methods.nextTokenId().call();
-    await nftContract.methods.mint(owner, nftTokenId).send({from: owner});
+    const mintResult = await nftContract.methods.mint(owner).send({from: owner});
+    const nftTokenId = mintResult.events.Transfer.returnValues.tokenId;
 
     const {contract: fractionalizer} = await initContract(helper, owner);
 
@@ -325,10 +325,10 @@
   itEth('call nft2rft while fractionalizer doesnt have approval for nft token', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
 
-    const nftCollection = await helper.eth.createNonfungibleCollection(owner, 'nft', 'NFT collection', 'NFT');
+    const nftCollection = await helper.eth.createNFTCollection(owner, 'nft', 'NFT collection', 'NFT');
     const nftContract = helper.ethNativeContract.collection(nftCollection.collectionAddress, 'nft', owner);
-    const nftTokenId = await nftContract.methods.nextTokenId().call();
-    await nftContract.methods.mint(owner, nftTokenId).send({from: owner});
+    const mintResult = await nftContract.methods.mint(owner).send({from: owner});
+    const nftTokenId = mintResult.events.Transfer.returnValues.tokenId;
 
     const {contract: fractionalizer} = await initContract(helper, owner);
 
@@ -341,11 +341,11 @@
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
 
     const fractionalizer = await deployContract(helper, owner);
-    const rftCollection = await helper.eth.createRefungibleCollection(owner, 'rft', 'RFT collection', 'RFT');
+    const rftCollection = await helper.eth.createRFTCollection(owner, 'rft', 'RFT collection', 'RFT');
     const refungibleContract = helper.ethNativeContract.collection(rftCollection.collectionAddress, 'rft', owner);
-    const rftTokenId = await refungibleContract.methods.nextTokenId().call();
-    await refungibleContract.methods.mint(owner, rftTokenId).send({from: owner});
-    
+    const mintResult = await refungibleContract.methods.mint(owner).send({from: owner});
+    const rftTokenId = mintResult.events.Transfer.returnValues.tokenId;
+
     await expect(fractionalizer.methods.rft2nft(rftCollection.collectionAddress, rftTokenId).call({from: owner}))
       .to.be.rejectedWith(/RFT collection is not set$/g);
   });
@@ -354,18 +354,18 @@
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
 
     const {contract: fractionalizer} = await initContract(helper, owner);
-    const rftCollection = await helper.eth.createRefungibleCollection(owner, 'rft', 'RFT collection', 'RFT');
+    const rftCollection = await helper.eth.createRFTCollection(owner, 'rft', 'RFT collection', 'RFT');
     const refungibleContract = helper.ethNativeContract.collection(rftCollection.collectionAddress, 'rft', owner);
-    const rftTokenId = await refungibleContract.methods.nextTokenId().call();
-    await refungibleContract.methods.mint(owner, rftTokenId).send({from: owner});
-    
+    const mintResult = await refungibleContract.methods.mint(owner).send({from: owner});
+    const rftTokenId = mintResult.events.Transfer.returnValues.tokenId;
+
     await expect(fractionalizer.methods.rft2nft(rftCollection.collectionAddress, rftTokenId).call())
       .to.be.rejectedWith(/Wrong RFT collection$/g);
   });
 
   itEth('call rft2nft for RFT token that was not minted by fractionalizer contract', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
-    const rftCollection = await helper.eth.createRefungibleCollection(owner, 'rft', 'RFT collection', 'RFT');
+    const rftCollection = await helper.eth.createRFTCollection(owner, 'rft', 'RFT collection', 'RFT');
     const refungibleContract = helper.ethNativeContract.collection(rftCollection.collectionAddress, 'rft', owner);
 
     const fractionalizer = await deployContract(helper, owner);
@@ -373,9 +373,9 @@
     await refungibleContract.methods.addCollectionAdmin(fractionalizer.options.address).send({from: owner});
     await fractionalizer.methods.setRFTCollection(rftCollection.collectionAddress).send({from: owner});
 
-    const rftTokenId = await refungibleContract.methods.nextTokenId().call();
-    await refungibleContract.methods.mint(owner, rftTokenId).send({from: owner});
-    
+    const mintResult = await refungibleContract.methods.mint(owner).send({from: owner});
+    const rftTokenId = mintResult.events.Transfer.returnValues.tokenId;
+
     await expect(fractionalizer.methods.rft2nft(rftCollection.collectionAddress, rftTokenId).call())
       .to.be.rejectedWith(/No corresponding NFT token found$/g);
   });
@@ -386,7 +386,7 @@
 
     const {contract: fractionalizer, rftCollectionAddress} = await initContract(helper, owner);
     const {rftTokenAddress} = await mintRFTToken(helper, owner, fractionalizer, 100n);
-    
+
     const {tokenId} = helper.ethAddress.extractTokenId(rftTokenAddress);
     const refungibleTokenContract = helper.ethNativeContract.rftToken(rftTokenAddress, owner);
     await refungibleTokenContract.methods.transfer(receiver, 50).send({from: owner});
@@ -420,7 +420,7 @@
     await expect(fractionalizer.methods.nft2rft(nftCollectionAddress, nftToken.tokenId, 100).call())
       .to.be.rejectedWith(/TransferNotAllowed$/g);
   });
-  
+
   itEth('fractionalize NFT with RFT transfers disallowed', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor, 20n);
 
@@ -432,10 +432,10 @@
     await fractionalizer.methods.setRFTCollection(rftCollectionAddress).send({from: owner});
     await helper.executeExtrinsic(donor, 'api.tx.unique.setTransfersEnabledFlag', [rftCollection.collectionId, false], true);
 
-    const nftCollection = await helper.eth.createNonfungibleCollection(owner, 'nft', 'NFT collection', 'NFT');
+    const nftCollection = await helper.eth.createNFTCollection(owner, 'nft', 'NFT collection', 'NFT');
     const nftContract = helper.ethNativeContract.collection(nftCollection.collectionAddress, 'nft', owner);
-    const nftTokenId = await nftContract.methods.nextTokenId().call();
-    await nftContract.methods.mint(owner, nftTokenId).send({from: owner});
+    const mintResult = await nftContract.methods.mint(owner).send({from: owner});
+    const nftTokenId = mintResult.events.Transfer.returnValues.tokenId;
 
     await fractionalizer.methods.setNftCollectionIsAllowed(nftCollection.collectionAddress, true).send({from: owner});
     await nftContract.methods.approve(fractionalizer.options.address, nftTokenId).send({from: owner});

--- a/tests/src/eth/fungibleAbi.json
+++ b/tests/src/eth/fungibleAbi.json
@@ -116,6 +116,15 @@
     "type": "function"
   },
   {
+    "inputs": [
+      { "internalType": "address", "name": "newOwner", "type": "address" }
+    ],
+    "name": "changeCollectionOwner",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
     "inputs": [],
     "name": "collectionOwner",
     "outputs": [
@@ -329,15 +338,6 @@
       { "internalType": "address", "name": "sponsor", "type": "address" }
     ],
     "name": "setCollectionSponsor",
-    "outputs": [],
-    "stateMutability": "nonpayable",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "address", "name": "newOwner", "type": "address" }
-    ],
-    "name": "setOwner",
     "outputs": [],
     "stateMutability": "nonpayable",
     "type": "function"

--- a/tests/src/eth/nesting/nest.test.ts
+++ b/tests/src/eth/nesting/nest.test.ts
@@ -7,7 +7,7 @@
   helper: EthUniqueHelper,
   owner: string,
 ): Promise<{ collectionId: number, collectionAddress: string, contract: Contract }> => {
-  const {collectionAddress, collectionId} = await helper.eth.createNonfungibleCollection(owner, 'A', 'B', 'C');
+  const {collectionAddress, collectionId} = await helper.eth.createNFTCollection(owner, 'A', 'B', 'C');
 
   const contract = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
   await contract.methods.setCollectionNesting(true).send({from: owner});
@@ -29,74 +29,53 @@
     itEth('NFT: allows an Owner to nest/unnest their token', async ({helper}) => {
       const owner = await helper.eth.createAccountWithBalance(donor);
       const {collectionId, contract} = await createNestingCollection(helper, owner);
-  
-      // Create a token to be nested
-      const targetNFTTokenId = await contract.methods.nextTokenId().call();
-      await contract.methods.mint(
-        owner,
-        targetNFTTokenId,
-      ).send({from: owner});
-  
+
+      // Create a token to be nested to
+      const mintingTargetNFTTokenIdResult = await contract.methods.mint(owner).send({from: owner});
+      const targetNFTTokenId = mintingTargetNFTTokenIdResult.events.Transfer.returnValues.tokenId;
       const targetNftTokenAddress = helper.ethAddress.fromTokenId(collectionId, targetNFTTokenId);
-  
+
       // Create a nested token
-      const firstTokenId = await contract.methods.nextTokenId().call();
-      await contract.methods.mint(
-        targetNftTokenAddress,
-        firstTokenId,
-      ).send({from: owner});
-  
+      const mintingFirstTokenIdResult = await contract.methods.mint(targetNftTokenAddress).send({from: owner});
+      const firstTokenId = mintingFirstTokenIdResult.events.Transfer.returnValues.tokenId;
       expect(await contract.methods.ownerOf(firstTokenId).call()).to.be.equal(targetNftTokenAddress);
-  
+
       // Create a token to be nested and nest
-      const secondTokenId = await contract.methods.nextTokenId().call();
-      await contract.methods.mint(
-        owner,
-        secondTokenId,
-      ).send({from: owner});
-  
+      const mintingSecondTokenIdResult = await contract.methods.mint(owner).send({from: owner});
+      const secondTokenId = mintingSecondTokenIdResult.events.Transfer.returnValues.tokenId;
+
       await contract.methods.transfer(targetNftTokenAddress, secondTokenId).send({from: owner});
-  
       expect(await contract.methods.ownerOf(secondTokenId).call()).to.be.equal(targetNftTokenAddress);
-  
+
       // Unnest token back
       await contract.methods.transferFrom(targetNftTokenAddress, owner, secondTokenId).send({from: owner});
       expect(await contract.methods.ownerOf(secondTokenId).call()).to.be.equal(owner);
     });
-  
+
     itEth('NFT: allows an Owner to nest/unnest their token (Restricted nesting)', async ({helper}) => {
       const owner = await helper.eth.createAccountWithBalance(donor);
-  
+
       const {collectionId: collectionIdA, collectionAddress: collectionAddressA, contract: contractA} = await createNestingCollection(helper, owner);
       const {collectionAddress: collectionAddressB, contract: contractB} = await createNestingCollection(helper, owner);
       await contractA.methods.setCollectionNesting(true, [collectionAddressA, collectionAddressB]).send({from: owner});
-  
+
       // Create a token to nest into
-      const targetNftTokenId = await contractA.methods.nextTokenId().call();
-      await contractA.methods.mint(
-        owner,
-        targetNftTokenId,
-      ).send({from: owner});
+      const mintingtargetNftTokenIdResult = await contractA.methods.mint(owner).send({from: owner});
+      const targetNftTokenId = mintingtargetNftTokenIdResult.events.Transfer.returnValues.tokenId;
       const nftTokenAddressA1 = helper.ethAddress.fromTokenId(collectionIdA, targetNftTokenId);
-  
+
       // Create a token for nesting in the same collection as the target
-      const nftTokenIdA = await contractA.methods.nextTokenId().call();
-      await contractA.methods.mint(
-        owner,
-        nftTokenIdA,
-      ).send({from: owner});
-  
+      const mintingTokenIdAResult = await contractA.methods.mint(owner).send({from: owner});
+      const nftTokenIdA = mintingTokenIdAResult.events.Transfer.returnValues.tokenId;
+
       // Create a token for nesting in a different collection
-      const nftTokenIdB = await contractB.methods.nextTokenId().call();
-      await contractB.methods.mint(
-        owner,
-        nftTokenIdB,
-      ).send({from: owner});
-  
+      const mintingTokenIdBResult = await contractB.methods.mint(owner).send({from: owner});
+      const nftTokenIdB = mintingTokenIdBResult.events.Transfer.returnValues.tokenId;
+
       // Nest
       await contractA.methods.transfer(nftTokenAddressA1, nftTokenIdA).send({from: owner});
       expect(await contractA.methods.ownerOf(nftTokenIdA).call()).to.be.equal(nftTokenAddressA1);
-  
+
       await contractB.methods.transfer(nftTokenAddressA1, nftTokenIdB).send({from: owner});
       expect(await contractB.methods.ownerOf(nftTokenIdB).call()).to.be.equal(nftTokenAddressA1);
     });
@@ -105,112 +84,88 @@
   describe('Negative Test: EVM Nesting', async() => {
     itEth('NFT: disallows to nest token if nesting is disabled', async ({helper}) => {
       const owner = await helper.eth.createAccountWithBalance(donor);
-  
+
       const {collectionId, contract} = await createNestingCollection(helper, owner);
       await contract.methods.setCollectionNesting(false).send({from: owner});
-  
+
       // Create a token to nest into
-      const targetNftTokenId = await contract.methods.nextTokenId().call();
-      await contract.methods.mint(
-        owner,
-        targetNftTokenId,
-      ).send({from: owner});
-  
-      const targetNftTokenAddress = helper.ethAddress.fromTokenId(collectionId, targetNftTokenId);
-  
+      const mintingTargetTokenIdResult = await contract.methods.mint(owner).send({from: owner});
+      const targetTokenId = mintingTargetTokenIdResult.events.Transfer.returnValues.tokenId;
+      const targetNftTokenAddress = helper.ethAddress.fromTokenId(collectionId, targetTokenId);
+
       // Create a token to nest
-      const nftTokenId = await contract.methods.nextTokenId().call();
-      await contract.methods.mint(
-        owner,
-        nftTokenId,
-      ).send({from: owner});
-  
+      const mintingNftTokenIdResult = await contract.methods.mint(owner).send({from: owner});
+      const nftTokenId = mintingNftTokenIdResult.events.Transfer.returnValues.tokenId;
+
       // Try to nest
       await expect(contract.methods
         .transfer(targetNftTokenAddress, nftTokenId)
         .call({from: owner})).to.be.rejectedWith('UserIsNotAllowedToNest');
     });
-  
+
     itEth('NFT: disallows a non-Owner to nest someone else\'s token', async ({helper}) => {
       const owner = await helper.eth.createAccountWithBalance(donor);
       const malignant = await helper.eth.createAccountWithBalance(donor);
-  
+
       const {collectionId, contract} = await createNestingCollection(helper, owner);
-  
+
       // Mint a token
-      const targetTokenId = await contract.methods.nextTokenId().call();
-      await contract.methods.mint(
-        owner,
-        targetTokenId,
-      ).send({from: owner});
+      const mintingTargetTokenIdResult = await contract.methods.mint(owner).send({from: owner});
+      const targetTokenId = mintingTargetTokenIdResult.events.Transfer.returnValues.tokenId;
       const targetTokenAddress = helper.ethAddress.fromTokenId(collectionId, targetTokenId);
-  
+
       // Mint a token belonging to a different account
-      const tokenId = await contract.methods.nextTokenId().call();
-      await contract.methods.mint(
-        malignant,
-        tokenId,
-      ).send({from: owner});
-  
+      const mintingTokenIdResult = await contract.methods.mint(malignant).send({from: owner});
+      const tokenId = mintingTokenIdResult.events.Transfer.returnValues.tokenId;
+
       // Try to nest one token in another as a non-owner account
       await expect(contract.methods
         .transfer(targetTokenAddress, tokenId)
         .call({from: malignant})).to.be.rejectedWith('UserIsNotAllowedToNest');
     });
-  
+
     itEth('NFT: disallows a non-Owner to nest someone else\'s token (Restricted nesting)', async ({helper}) => {
       const owner = await helper.eth.createAccountWithBalance(donor);
       const malignant = await helper.eth.createAccountWithBalance(donor);
-  
+
       const {collectionId: collectionIdA, collectionAddress: collectionAddressA, contract: contractA} = await createNestingCollection(helper, owner);
       const {collectionAddress: collectionAddressB, contract: contractB} = await createNestingCollection(helper, owner);
-  
+
       await contractA.methods.setCollectionNesting(true, [collectionAddressA, collectionAddressB]).send({from: owner});
-  
+
       // Create a token in one collection
-      const nftTokenIdA = await contractA.methods.nextTokenId().call();
-      await contractA.methods.mint(
-        owner,
-        nftTokenIdA,
-      ).send({from: owner});
+      const mintingTokenIdAResult = await contractA.methods.mint(owner).send({from: owner});
+      const nftTokenIdA = mintingTokenIdAResult.events.Transfer.returnValues.tokenId;
       const nftTokenAddressA = helper.ethAddress.fromTokenId(collectionIdA, nftTokenIdA);
-  
-      // Create a token in another collection belonging to someone else
-      const nftTokenIdB = await contractB.methods.nextTokenId().call();
-      await contractB.methods.mint(
-        malignant,
-        nftTokenIdB,
-      ).send({from: owner});
-  
+
+      // Create a token in another collection
+      const mintingTokenIdBResult = await contractB.methods.mint(malignant).send({from: owner});
+      const nftTokenIdB = mintingTokenIdBResult.events.Transfer.returnValues.tokenId;
+
       // Try to drag someone else's token into the other collection and nest
       await expect(contractB.methods
         .transfer(nftTokenAddressA, nftTokenIdB)
         .call({from: malignant})).to.be.rejectedWith('UserIsNotAllowedToNest');
     });
-  
+
     itEth('NFT: disallows to nest token in an unlisted collection', async ({helper}) => {
       const owner = await helper.eth.createAccountWithBalance(donor);
-  
+
       const {collectionId: collectionIdA, collectionAddress: collectionAddressA, contract: contractA} = await createNestingCollection(helper, owner);
       const {contract: contractB} = await createNestingCollection(helper, owner);
-  
+
       await contractA.methods.setCollectionNesting(true, [collectionAddressA]).send({from: owner});
-  
+
       // Create a token in one collection
-      const nftTokenIdA = await contractA.methods.nextTokenId().call();
-      await contractA.methods.mint(
-        owner,
-        nftTokenIdA,
-      ).send({from: owner});
+      const mintingTokenIdAResult = await contractA.methods.mint(owner).send({from: owner});
+      const nftTokenIdA = mintingTokenIdAResult.events.Transfer.returnValues.tokenId;
       const nftTokenAddressA = helper.ethAddress.fromTokenId(collectionIdA, nftTokenIdA);
-  
+
       // Create a token in another collection
-      const nftTokenIdB = await contractB.methods.nextTokenId().call();
-      await contractB.methods.mint(
-        owner,
-        nftTokenIdB,
-      ).send({from: owner});
-  
+      const mintingTokenIdBResult = await contractB.methods.mint(owner).send({from: owner});
+      const nftTokenIdB = mintingTokenIdBResult.events.Transfer.returnValues.tokenId;
+
+
       // Try to nest into a token in the other collection, disallowed in the first
       await expect(contractB.methods
         .transfer(nftTokenAddressA, nftTokenIdB)

--- a/tests/src/eth/nonFungible.test.ts
+++ b/tests/src/eth/nonFungible.test.ts
@@ -29,7 +29,7 @@
       [alice] = await helper.arrange.createAccounts([10n], donor);
     });
   });
-  
+
   itEth('totalSupply', async ({helper}) => {
     const collection = await helper.nft.mintCollection(alice, {});
     await collection.mintToken(alice);
@@ -68,6 +68,16 @@
 
     expect(owner).to.equal(caller);
   });
+
+  itEth('name/symbol is available regardless of ERC721Metadata support', async ({helper}) => {
+    const collection = await helper.nft.mintCollection(alice, {name: 'test', tokenPrefix: 'TEST'});
+    const caller = helper.eth.createAccount();
+
+    const contract = helper.ethNativeContract.collectionById(collection.collectionId, 'nft', caller);
+
+    expect(await contract.methods.name().call()).to.equal('test');
+    expect(await contract.methods.symbol().call()).to.equal('TEST');
+  });
 });
 
 describe('Check ERC721 token URI for NFT', () => {
@@ -79,34 +89,29 @@
     });
   });
 
-  async function setup(helper: EthUniqueHelper, tokenPrefix: string, propertyKey?: string, propertyValue?: string): Promise<{contract: Contract, nextTokenId: string}> {
+  async function setup(helper: EthUniqueHelper, baseUri: string, propertyKey?: string, propertyValue?: string): Promise<{contract: Contract, nextTokenId: string}> {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
 
-    const collectionHelper = helper.ethNativeContract.collectionHelpers(owner);
-    let result = await collectionHelper.methods.createERC721MetadataCompatibleCollection('Mint collection', 'a', 'b', tokenPrefix).send({value: Number(2n * helper.balance.getOneTokenNominal())});
-    const collectionAddress = helper.ethAddress.normalizeAddress(result.events.CollectionCreated.returnValues.collectionId);
+    const {collectionAddress} = await helper.eth.createERC721MetadataCompatibleNFTCollection(owner, 'Mint collection', 'a', 'b', baseUri);
     const contract = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
-    
-    const nextTokenId = await contract.methods.nextTokenId().call();
-    expect(nextTokenId).to.be.equal('1');
-    result = await contract.methods.mint(
-      receiver,
-      nextTokenId,
-    ).send();
 
+    const result = await contract.methods.mint(receiver).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
+    expect(tokenId).to.be.equal('1');
+
     if (propertyKey && propertyValue) {
       // Set URL or suffix
-      await contract.methods.setProperty(nextTokenId, propertyKey, Buffer.from(propertyValue)).send();
+      await contract.methods.setProperty(tokenId, propertyKey, Buffer.from(propertyValue)).send();
     }
 
     const event = result.events.Transfer;
     expect(event.address).to.be.equal(collectionAddress);
     expect(event.returnValues.from).to.be.equal('0x0000000000000000000000000000000000000000');
     expect(event.returnValues.to).to.be.equal(receiver);
-    expect(event.returnValues.tokenId).to.be.equal(nextTokenId);
+    expect(event.returnValues.tokenId).to.be.equal(tokenId);
 
-    return {contract, nextTokenId};
+    return {contract, nextTokenId: tokenId};
   }
 
   itEth('Empty tokenURI', async ({helper}) => {
@@ -115,18 +120,18 @@
   });
 
   itEth('TokenURI from url', async ({helper}) => {
-    const {contract, nextTokenId} = await setup(helper, 'BaseURI_', 'url', 'Token URI');
+    const {contract, nextTokenId} = await setup(helper, 'BaseURI_', 'URI', 'Token URI');
     expect(await contract.methods.tokenURI(nextTokenId).call()).to.be.equal('Token URI');
   });
 
-  itEth('TokenURI from baseURI + tokenId', async ({helper}) => {
+  itEth('TokenURI from baseURI', async ({helper}) => {
     const {contract, nextTokenId} = await setup(helper, 'BaseURI_');
-    expect(await contract.methods.tokenURI(nextTokenId).call()).to.be.equal('BaseURI_' + nextTokenId);
+    expect(await contract.methods.tokenURI(nextTokenId).call()).to.be.equal('BaseURI_');
   });
 
   itEth('TokenURI from baseURI + suffix', async ({helper}) => {
     const suffix = '/some/suffix';
-    const {contract, nextTokenId} = await setup(helper, 'BaseURI_', 'suffix', suffix);
+    const {contract, nextTokenId} = await setup(helper, 'BaseURI_', 'URISuffix', suffix);
     expect(await contract.methods.tokenURI(nextTokenId).call()).to.be.equal('BaseURI_' + suffix);
   });
 });
@@ -146,24 +151,19 @@
     const owner = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
 
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'Minty', '6', '6');
+    const {collectionAddress} = await helper.eth.createERC721MetadataCompatibleNFTCollection(owner, 'Mint collection', '6', '6', '');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'nft', owner);
-    const nextTokenId = await contract.methods.nextTokenId().call();
 
-    expect(nextTokenId).to.be.equal('1');
-    const result = await contract.methods.mintWithTokenURI(
-      receiver,
-      nextTokenId,
-      'Test URI',
-    ).send();
+    const result = await contract.methods.mintWithTokenURI(receiver, 'Test URI').send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
+    expect(tokenId).to.be.equal('1');
 
     const event = result.events.Transfer;
     expect(event.address).to.be.equal(collectionAddress);
     expect(event.returnValues.from).to.be.equal('0x0000000000000000000000000000000000000000');
     expect(event.returnValues.to).to.be.equal(receiver);
-    expect(event.returnValues.tokenId).to.be.equal(nextTokenId);
 
-    expect(await contract.methods.tokenURI(nextTokenId).call()).to.be.equal('Test URI');
+    expect(await contract.methods.tokenURI(tokenId).call()).to.be.equal('Test URI');
 
     // TODO: this wont work right now, need release 919000 first
     // await helper.methods.setOffchainSchema(collectionIdAddress, 'https://offchain-service.local/token-info/{id}').send();
@@ -216,7 +216,7 @@
 
     {
       const result = await contract.methods.burn(tokenId).send({from: caller});
-      
+
       const event = result.events.Transfer;
       expect(event.address).to.be.equal(collectionAddress);
       expect(event.returnValues.from).to.be.equal(caller);
@@ -322,7 +322,7 @@
       [alice] = await helper.arrange.createAccounts([10n], donor);
     });
   });
-  
+
   itEth('approve() call fee is less than 0.2UNQ', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const spender = helper.eth.createAccount();
@@ -403,7 +403,7 @@
 
     const collectionAddress = helper.ethAddress.fromCollectionId(collection.collectionId);
     const contract = helper.ethNativeContract.collection(collectionAddress, 'nft');
-    
+
     const events: any = [];
     contract.events.allEvents((_: any, event: any) => {
       events.push(event);
@@ -428,7 +428,7 @@
 
     const collectionAddress = helper.ethAddress.fromCollectionId(collection.collectionId);
     const contract = helper.ethNativeContract.collection(collectionAddress, 'nft');
-    
+
     const events: any = [];
     contract.events.allEvents((_: any, event: any) => {
       events.push(event);
@@ -455,13 +455,14 @@
 
     const collectionAddress = helper.ethAddress.fromCollectionId(collection.collectionId);
     const contract = helper.ethNativeContract.collection(collectionAddress, 'nft');
-    
+
     const events: any = [];
     contract.events.allEvents((_: any, event: any) => {
       events.push(event);
     });
 
     await token.transferFrom(bob, {Substrate: alice.address}, {Ethereum: receiver});
+
     if (events.length == 0) await helper.wait.newBlocks(1);
     const event = events[0];
 
@@ -479,13 +480,14 @@
 
     const collectionAddress = helper.ethAddress.fromCollectionId(collection.collectionId);
     const contract = helper.ethNativeContract.collection(collectionAddress, 'nft');
-    
+
     const events: any = [];
     contract.events.allEvents((_: any, event: any) => {
       events.push(event);
     });
 
     await token.transfer(alice, {Ethereum: receiver});
+
     if (events.length == 0) await helper.wait.newBlocks(1);
     const event = events[0];
 
@@ -509,7 +511,23 @@
 
   itEth('Returns collection name', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
-    const collection = await helper.nft.mintCollection(alice, {name: 'oh River', tokenPrefix: 'CHANGE'});
+    const tokenPropertyPermissions = [{
+      key: 'URI',
+      permission: {
+        mutable: true,
+        collectionAdmin: true,
+        tokenOwner: false,
+      },
+    }];
+    const collection = await helper.nft.mintCollection(
+      alice,
+      {
+        name: 'oh River',
+        tokenPrefix: 'CHANGE',
+        properties: [{key: 'ERC721Metadata', value: '1'}],
+        tokenPropertyPermissions,
+      },
+    );
 
     const contract = helper.ethNativeContract.collectionById(collection.collectionId, 'nft', caller);
     const name = await contract.methods.name().call();
@@ -518,10 +536,26 @@
 
   itEth('Returns symbol name', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
-    const collection = await helper.nft.mintCollection(alice, {name: 'oh River', tokenPrefix: 'CHANGE'});
+    const tokenPropertyPermissions = [{
+      key: 'URI',
+      permission: {
+        mutable: true,
+        collectionAdmin: true,
+        tokenOwner: false,
+      },
+    }];
+    const collection = await helper.nft.mintCollection(
+      alice,
+      {
+        name: 'oh River',
+        tokenPrefix: 'CHANGE',
+        properties: [{key: 'ERC721Metadata', value: '1'}],
+        tokenPropertyPermissions,
+      },
+    );
 
     const contract = helper.ethNativeContract.collectionById(collection.collectionId, 'nft', caller);
     const symbol = await contract.methods.symbol().call();
     expect(symbol).to.equal('CHANGE');
   });
-});
\ No newline at end of file
+});

--- a/tests/src/eth/nonFungibleAbi.json
+++ b/tests/src/eth/nonFungibleAbi.json
@@ -146,6 +146,15 @@
     "type": "function"
   },
   {
+    "inputs": [
+      { "internalType": "address", "name": "newOwner", "type": "address" }
+    ],
+    "name": "changeCollectionOwner",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
     "inputs": [],
     "name": "collectionOwner",
     "outputs": [
@@ -260,12 +269,9 @@
     "type": "function"
   },
   {
-    "inputs": [
-      { "internalType": "address", "name": "to", "type": "address" },
-      { "internalType": "uint256", "name": "tokenId", "type": "uint256" }
-    ],
+    "inputs": [{ "internalType": "address", "name": "to", "type": "address" }],
     "name": "mint",
-    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
     "stateMutability": "nonpayable",
     "type": "function"
   },
@@ -287,7 +293,7 @@
           { "internalType": "uint256", "name": "field_0", "type": "uint256" },
           { "internalType": "string", "name": "field_1", "type": "string" }
         ],
-        "internalType": "struct Tuple8[]",
+        "internalType": "struct Tuple6[]",
         "name": "tokens",
         "type": "tuple[]"
       }
@@ -300,11 +306,10 @@
   {
     "inputs": [
       { "internalType": "address", "name": "to", "type": "address" },
-      { "internalType": "uint256", "name": "tokenId", "type": "uint256" },
       { "internalType": "string", "name": "tokenUri", "type": "string" }
     ],
     "name": "mintWithTokenURI",
-    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
     "stateMutability": "nonpayable",
     "type": "function"
   },
@@ -476,15 +481,6 @@
       { "internalType": "address", "name": "sponsor", "type": "address" }
     ],
     "name": "setCollectionSponsor",
-    "outputs": [],
-    "stateMutability": "nonpayable",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "address", "name": "newOwner", "type": "address" }
-    ],
-    "name": "setOwner",
     "outputs": [],
     "stateMutability": "nonpayable",
     "type": "function"

--- a/tests/src/eth/payable.test.ts
+++ b/tests/src/eth/payable.test.ts
@@ -118,7 +118,7 @@
     const deployer = await helper.eth.createAccountWithBalance(donor);
     const caller = await helper.eth.createAccountWithBalance(donor);
     const contract = await helper.eth.deployFlipper(deployer);
-    
+
     const initialCallerBalance = await helper.balance.getEthereum(caller);
     await contract.methods.flip().send({from: caller});
     const finalCallerBalance = await helper.balance.getEthereum(caller);
@@ -129,7 +129,7 @@
     const deployer = await helper.eth.createAccountWithBalance(donor);
     const caller = await helper.eth.createAccountWithBalance(donor);
     const contract = await deployProxyContract(helper, deployer);
-    
+
     const initialCallerBalance = await helper.balance.getEthereum(caller);
     const initialContractBalance = await helper.balance.getEthereum(contract.options.address);
     await contract.methods.flip().send({from: caller});
@@ -138,7 +138,7 @@
     expect(finalCallerBalance < initialCallerBalance).to.be.true;
     expect(finalContractBalance == initialContractBalance).to.be.true;
   });
-  
+
   itEth('Fee for nested calls to native methods is withdrawn from the user', async({helper}) => {
     const CONTRACT_BALANCE = 2n * helper.balance.getOneTokenNominal();
 
@@ -146,7 +146,7 @@
     const caller = await helper.eth.createAccountWithBalance(donor);
     const contract = await deployProxyContract(helper, deployer);
 
-    const collectionAddress = (await contract.methods.createNonfungibleCollection().send({from: caller, value: Number(CONTRACT_BALANCE)})).events.CollectionCreated.returnValues.collection;
+    const collectionAddress = (await contract.methods.createNFTCollection().send({from: caller, value: Number(CONTRACT_BALANCE)})).events.CollectionCreated.returnValues.collection;
     const initialCallerBalance = await helper.balance.getEthereum(caller);
     const initialContractBalance = await helper.balance.getEthereum(contract.options.address);
     await contract.methods.mintNftToken(collectionAddress).send({from: caller});
@@ -155,7 +155,7 @@
     expect(finalCallerBalance < initialCallerBalance).to.be.true;
     expect(finalContractBalance == initialContractBalance).to.be.true;
   });
-  
+
   itEth('Fee for nested calls to create*Collection methods is withdrawn from the user and from the contract', async({helper}) => {
     const CONTRACT_BALANCE = 2n * helper.balance.getOneTokenNominal();
     const deployer = await helper.eth.createAccountWithBalance(donor);
@@ -164,7 +164,7 @@
 
     const initialCallerBalance = await helper.balance.getEthereum(caller);
     const initialContractBalance = await helper.balance.getEthereum(contract.options.address);
-    await contract.methods.createNonfungibleCollection().send({from: caller, value: Number(CONTRACT_BALANCE)});
+    await contract.methods.createNFTCollection().send({from: caller, value: Number(CONTRACT_BALANCE)});
     const finalCallerBalance = await helper.balance.getEthereum(caller);
     const finalContractBalance = await helper.balance.getEthereum(contract.options.address);
     expect(finalCallerBalance < initialCallerBalance).to.be.true;
@@ -176,9 +176,9 @@
     const BIG_FEE = 3n * helper.balance.getOneTokenNominal();
     const caller = await helper.eth.createAccountWithBalance(donor);
     const collectionHelper = helper.ethNativeContract.collectionHelpers(caller);
-        
-    await expect(collectionHelper.methods.createNonfungibleCollection('A', 'B', 'C').call({value: Number(SMALL_FEE)})).to.be.rejectedWith('Sent amount not equals to collection creation price (2000000000000000000)');
-    await expect(collectionHelper.methods.createNonfungibleCollection('A', 'B', 'C').call({value: Number(BIG_FEE)})).to.be.rejectedWith('Sent amount not equals to collection creation price (2000000000000000000)');
+
+    await expect(collectionHelper.methods.createNFTCollection('A', 'B', 'C').call({value: Number(SMALL_FEE)})).to.be.rejectedWith('Sent amount not equals to collection creation price (2000000000000000000)');
+    await expect(collectionHelper.methods.createNFTCollection('A', 'B', 'C').call({value: Number(BIG_FEE)})).to.be.rejectedWith('Sent amount not equals to collection creation price (2000000000000000000)');
   });
 
   itEth('Negative test: call createRFTCollection with wrong fee', async({helper}) => {
@@ -186,7 +186,7 @@
     const BIG_FEE = 3n * helper.balance.getOneTokenNominal();
     const caller = await helper.eth.createAccountWithBalance(donor);
     const collectionHelper = helper.ethNativeContract.collectionHelpers(caller);
-        
+
     await expect(collectionHelper.methods.createRFTCollection('A', 'B', 'C').call({value: Number(SMALL_FEE)})).to.be.rejectedWith('Sent amount not equals to collection creation price (2000000000000000000)');
     await expect(collectionHelper.methods.createRFTCollection('A', 'B', 'C').call({value: Number(BIG_FEE)})).to.be.rejectedWith('Sent amount not equals to collection creation price (2000000000000000000)');
   });
@@ -227,16 +227,15 @@
           InnerContract(innerContract).flip();
         }
 
-        function createNonfungibleCollection() external payable {
+        function createNFTCollection() external payable {
           address collectionHelpers = 0x6C4E9fE1AE37a41E93CEE429e8E1881aBdcbb54F;
-		      address nftCollection = CollectionHelpers(collectionHelpers).createNonfungibleCollection{value: msg.value}("A", "B", "C");
+		      address nftCollection = CollectionHelpers(collectionHelpers).createNFTCollection{value: msg.value}("A", "B", "C");
           emit CollectionCreated(nftCollection);
         }
 
         function mintNftToken(address collectionAddress) external  {
           UniqueNFT collection = UniqueNFT(collectionAddress);
-          uint256 tokenId = collection.nextTokenId();
-          collection.mint(msg.sender, tokenId);
+          uint256 tokenId = collection.mint(msg.sender);
           emit TokenMinted(tokenId);
         }
 

--- a/tests/src/eth/proxy/UniqueNFTProxy.sol
+++ b/tests/src/eth/proxy/UniqueNFTProxy.sol
@@ -120,20 +120,19 @@
         return proxied.mintingFinished();
     }
 
-    function mint(address to, uint256 tokenId)
+    function mint(address to)
         external
         override
-        returns (bool)
+        returns (uint256)
     {
-        return proxied.mint(to, tokenId);
+        return proxied.mint(to);
     }
 
     function mintWithTokenURI(
         address to,
-        uint256 tokenId,
         string memory tokenUri
-    ) external override returns (bool) {
-        return proxied.mintWithTokenURI(to, tokenId, tokenUri);
+    ) external override returns (uint256) {
+        return proxied.mintWithTokenURI(to, tokenUri);
     }
 
     function finishMinting() external override returns (bool) {
@@ -169,7 +168,7 @@
         return proxied.mintBulk(to, tokenIds);
     }
 
-    function mintBulkWithTokenURI(address to, Tuple0[] memory tokens)
+    function mintBulkWithTokenURI(address to, Tuple6[] memory tokens)
         external
         override
         returns (bool)

--- a/tests/src/eth/proxy/nonFungibleProxy.test.ts
+++ b/tests/src/eth/proxy/nonFungibleProxy.test.ts
@@ -101,7 +101,7 @@
 
   itEth('Can perform mint()', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress} = await helper.eth.createNonfungibleCollection(owner, 'A', 'A', 'A');
+    const {collectionAddress} = await helper.eth.createERC721MetadataCompatibleNFTCollection(owner, 'A', 'A', 'A', '');
     const caller = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
 
@@ -111,13 +111,11 @@
     await collectionEvmOwned.methods.addCollectionAdmin(contract.options.address).send();
 
     {
-      const nextTokenId = await contract.methods.nextTokenId().call();
-      expect(nextTokenId).to.be.equal('1');
-      const result = await contract.methods.mintWithTokenURI(
-        receiver,
-        nextTokenId,
-        'Test URI',
-      ).send({from: caller});
+      const nextTokenId = await contract.methods.nextTokenId().call()
+      const result = await contract.methods.mintWithTokenURI(receiver, nextTokenId, 'Test URI').send({from: caller});
+      const tokenId = result.events.Transfer.returnValues.tokenId;
+      expect(tokenId).to.be.equal('1');
+
       const events = helper.eth.normalizeEvents(result.events);
       events[0].address = events[0].address.toLocaleLowerCase();
 
@@ -128,12 +126,12 @@
           args: {
             from: '0x0000000000000000000000000000000000000000',
             to: receiver,
-            tokenId: nextTokenId,
+            tokenId,
           },
         },
       ]);
 
-      expect(await contract.methods.tokenURI(nextTokenId).call()).to.be.equal('Test URI');
+      expect(await contract.methods.tokenURI(tokenId).call()).to.be.equal('Test URI');
     }
   });
 

--- a/tests/src/eth/reFungible.test.ts
+++ b/tests/src/eth/reFungible.test.ts
@@ -31,31 +31,23 @@
 
   itEth('totalSupply', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'TotalSupply', '6', '6');
+    const {collectionAddress} = await helper.eth.createRFTCollection(caller, 'TotalSupply', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
-    const nextTokenId = await contract.methods.nextTokenId().call();
-    await contract.methods.mint(caller, nextTokenId).send();
+
+    await contract.methods.mint(caller).send();
+
     const totalSupply = await contract.methods.totalSupply().call();
     expect(totalSupply).to.equal('1');
   });
 
   itEth('balanceOf', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'BalanceOf', '6', '6');
+    const {collectionAddress} = await helper.eth.createRFTCollection(caller, 'BalanceOf', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
 
-    {
-      const nextTokenId = await contract.methods.nextTokenId().call();
-      await contract.methods.mint(caller, nextTokenId).send();
-    }
-    {
-      const nextTokenId = await contract.methods.nextTokenId().call();
-      await contract.methods.mint(caller, nextTokenId).send();
-    }
-    {
-      const nextTokenId = await contract.methods.nextTokenId().call();
-      await contract.methods.mint(caller, nextTokenId).send();
-    }
+    await contract.methods.mint(caller).send();
+    await contract.methods.mint(caller).send();
+    await contract.methods.mint(caller).send();
 
     const balance = await contract.methods.balanceOf(caller).call();
     expect(balance).to.equal('3');
@@ -63,11 +55,11 @@
 
   itEth('ownerOf', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'OwnerOf', '6', '6');
+    const {collectionAddress} = await helper.eth.createRFTCollection(caller, 'OwnerOf', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
 
-    const tokenId = await contract.methods.nextTokenId().call();
-    await contract.methods.mint(caller, tokenId).send();
+    const result = await contract.methods.mint(caller).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
 
     const owner = await contract.methods.ownerOf(tokenId).call();
     expect(owner).to.equal(caller);
@@ -76,11 +68,11 @@
   itEth('ownerOf after burn', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
-    const {collectionId, collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'OwnerOf-AfterBurn', '6', '6');
+    const {collectionId, collectionAddress} = await helper.eth.createRFTCollection(caller, 'OwnerOf-AfterBurn', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
 
-    const tokenId = await contract.methods.nextTokenId().call();
-    await contract.methods.mint(caller, tokenId).send();
+    const result = await contract.methods.mint(caller).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
     const tokenContract = helper.ethNativeContract.rftTokenById(collectionId, tokenId, caller);
 
     await tokenContract.methods.repartition(2).send();
@@ -95,11 +87,11 @@
   itEth('ownerOf for partial ownership', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
-    const {collectionId, collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'Partial-OwnerOf', '6', '6');
+    const {collectionId, collectionAddress} = await helper.eth.createRFTCollection(caller, 'Partial-OwnerOf', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
 
-    const tokenId = await contract.methods.nextTokenId().call();
-    await contract.methods.mint(caller, tokenId).send();
+    const result = await contract.methods.mint(caller).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
     const tokenContract = helper.ethNativeContract.rftTokenById(collectionId, tokenId, caller);
 
     await tokenContract.methods.repartition(2).send();
@@ -124,30 +116,25 @@
   itEth('Can perform mint()', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(owner, 'Minty', '6', '6');
+    const {collectionAddress} = await helper.eth.createERC721MetadataCompatibleRFTCollection(owner, 'Minty', '6', '6', '');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', owner);
-    
-    const nextTokenId = await contract.methods.nextTokenId().call();
-    expect(nextTokenId).to.be.equal('1');
-    const result = await contract.methods.mintWithTokenURI(
-      receiver,
-      nextTokenId,
-      'Test URI',
-    ).send();
 
+    const result = await contract.methods.mintWithTokenURI(receiver, 'Test URI').send();
+
     const event = result.events.Transfer;
     expect(event.address).to.equal(collectionAddress);
     expect(event.returnValues.from).to.equal('0x0000000000000000000000000000000000000000');
     expect(event.returnValues.to).to.equal(receiver);
-    expect(event.returnValues.tokenId).to.equal(nextTokenId);
+    const tokenId = event.returnValues.tokenId;
+    expect(tokenId).to.be.equal('1');
 
-    expect(await contract.methods.tokenURI(nextTokenId).call()).to.be.equal('Test URI');
+    expect(await contract.methods.tokenURI(tokenId).call()).to.be.equal('Test URI');
   });
 
   itEth('Can perform mintBulk()', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(owner, 'MintBulky', '6', '6');
+    const {collectionAddress} = await helper.eth.createERC721MetadataCompatibleRFTCollection(owner, 'MintBulky', '6', '6', '');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', owner);
 
     {
@@ -179,11 +166,11 @@
 
   itEth('Can perform burn()', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'Burny', '6', '6');
+    const {collectionAddress} = await helper.eth.createRFTCollection(caller, 'Burny', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
 
-    const tokenId = await contract.methods.nextTokenId().call();
-    await contract.methods.mint(caller, tokenId).send();
+    const result = await contract.methods.mint(caller).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
     {
       const result = await contract.methods.burn(tokenId).send();
       const event = result.events.Transfer;
@@ -197,12 +184,13 @@
   itEth('Can perform transferFrom()', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
-    const {collectionId, collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'TransferFromy', '6', '6');
+    const {collectionId, collectionAddress} = await helper.eth.createRFTCollection(caller, 'TransferFromy', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
 
-    const tokenId = await contract.methods.nextTokenId().call();
+    const result = await contract.methods.mint(caller).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
+
     const tokenAddress = helper.ethAddress.fromTokenId(collectionId, tokenId);
-    await contract.methods.mint(caller, tokenId).send();
 
     const tokenContract = helper.ethNativeContract.rftToken(tokenAddress, caller);
     await tokenContract.methods.repartition(15).send();
@@ -241,15 +229,15 @@
   itEth('Can perform transfer()', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'Transferry', '6', '6');
+    const {collectionAddress} = await helper.eth.createRFTCollection(caller, 'Transferry', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
 
-    const tokenId = await contract.methods.nextTokenId().call();
-    await contract.methods.mint(caller, tokenId).send();
+    const result = await contract.methods.mint(caller).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
 
     {
       const result = await contract.methods.transfer(receiver, tokenId).send();
-      
+
       const event = result.events.Transfer;
       expect(event.address).to.equal(collectionAddress);
       expect(event.returnValues.from).to.equal(caller);
@@ -271,11 +259,11 @@
   itEth('transfer event on transfer from partial ownership to full ownership', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
-    const {collectionId, collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'Transferry-Partial-to-Full', '6', '6');
+    const {collectionId, collectionAddress} = await helper.eth.createRFTCollection(caller, 'Transferry-Partial-to-Full', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
 
-    const tokenId = await contract.methods.nextTokenId().call();
-    await contract.methods.mint(caller, tokenId).send();
+    const result = await contract.methods.mint(caller).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
 
     const tokenContract = helper.ethNativeContract.rftTokenById(collectionId, tokenId, caller);
 
@@ -300,11 +288,11 @@
   itEth('transfer event on transfer from full ownership to partial ownership', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
-    const {collectionId, collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'Transferry-Full-to-Partial', '6', '6');
+    const {collectionId, collectionAddress} = await helper.eth.createRFTCollection(caller, 'Transferry-Full-to-Partial', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
 
-    const tokenId = await contract.methods.nextTokenId().call();
-    await contract.methods.mint(caller, tokenId).send();
+    const result = await contract.methods.mint(caller).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
 
     const tokenContract = helper.ethNativeContract.rftTokenById(collectionId, tokenId, caller);
 
@@ -340,11 +328,11 @@
   itEth('transferFrom() call fee is less than 0.2UNQ', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'Feeful-Transfer-From', '6', '6');
+    const {collectionAddress} = await helper.eth.createRFTCollection(caller, 'Feeful-Transfer-From', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
 
-    const tokenId = await contract.methods.nextTokenId().call();
-    await contract.methods.mint(caller, tokenId).send();
+    const result = await contract.methods.mint(caller).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
 
     const cost = await helper.eth.recordCallFee(caller, () => contract.methods.transferFrom(caller, receiver, tokenId).send());
     expect(cost < BigInt(0.2 * Number(helper.balance.getOneTokenNominal())));
@@ -354,11 +342,11 @@
   itEth('transfer() call fee is less than 0.2UNQ', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'Feeful-Transfer', '6', '6');
+    const {collectionAddress} = await helper.eth.createRFTCollection(caller, 'Feeful-Transfer', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
 
-    const tokenId = await contract.methods.nextTokenId().call();
-    await contract.methods.mint(caller, tokenId).send();
+    const result = await contract.methods.mint(caller).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
 
     const cost = await helper.eth.recordCallFee(caller, () => contract.methods.transfer(receiver, tokenId).send());
     expect(cost < BigInt(0.2 * Number(helper.balance.getOneTokenNominal())));
@@ -381,8 +369,24 @@
 
   itEth('Returns collection name', async ({helper}) => {
     const caller = helper.eth.createAccount();
-    const collection = await helper.rft.mintCollection(alice, {name: 'Leviathan', tokenPrefix: '11'});
-    
+    const tokenPropertyPermissions = [{
+      key: 'URI',
+      permission: {
+        mutable: true,
+        collectionAdmin: true,
+        tokenOwner: false,
+      },
+    }];
+    const collection = await helper.rft.mintCollection(
+      alice,
+      {
+        name: 'Leviathan',
+        tokenPrefix: '11',
+        properties: [{key: 'ERC721Metadata', value: '1'}],
+        tokenPropertyPermissions,
+      },
+    );
+
     const contract = helper.ethNativeContract.collectionById(collection.collectionId, 'rft', caller);
     const name = await contract.methods.name().call();
     expect(name).to.equal('Leviathan');
@@ -390,8 +394,25 @@
 
   itEth('Returns symbol name', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
-    const {collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'Leviathan', '', '12');
-    const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
+    const tokenPropertyPermissions = [{
+      key: 'URI',
+      permission: {
+        mutable: true,
+        collectionAdmin: true,
+        tokenOwner: false,
+      },
+    }];
+    const {collectionId} = await helper.rft.mintCollection(
+      alice,
+      {
+        name: 'Leviathan',
+        tokenPrefix: '12',
+        properties: [{key: 'ERC721Metadata', value: '1'}],
+        tokenPropertyPermissions,
+      },
+    );
+
+    const contract = helper.ethNativeContract.collectionById(collectionId, 'rft', caller);
     const symbol = await contract.methods.symbol().call();
     expect(symbol).to.equal('12');
   });

--- a/tests/src/eth/reFungibleAbi.json
+++ b/tests/src/eth/reFungibleAbi.json
@@ -146,6 +146,15 @@
     "type": "function"
   },
   {
+    "inputs": [
+      { "internalType": "address", "name": "newOwner", "type": "address" }
+    ],
+    "name": "changeCollectionOwner",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
     "inputs": [],
     "name": "collectionOwner",
     "outputs": [
@@ -260,12 +269,9 @@
     "type": "function"
   },
   {
-    "inputs": [
-      { "internalType": "address", "name": "to", "type": "address" },
-      { "internalType": "uint256", "name": "tokenId", "type": "uint256" }
-    ],
+    "inputs": [{ "internalType": "address", "name": "to", "type": "address" }],
     "name": "mint",
-    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
     "stateMutability": "nonpayable",
     "type": "function"
   },
@@ -287,7 +293,7 @@
           { "internalType": "uint256", "name": "field_0", "type": "uint256" },
           { "internalType": "string", "name": "field_1", "type": "string" }
         ],
-        "internalType": "struct Tuple8[]",
+        "internalType": "struct Tuple6[]",
         "name": "tokens",
         "type": "tuple[]"
       }
@@ -300,11 +306,10 @@
   {
     "inputs": [
       { "internalType": "address", "name": "to", "type": "address" },
-      { "internalType": "uint256", "name": "tokenId", "type": "uint256" },
       { "internalType": "string", "name": "tokenUri", "type": "string" }
     ],
     "name": "mintWithTokenURI",
-    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
     "stateMutability": "nonpayable",
     "type": "function"
   },
@@ -476,15 +481,6 @@
       { "internalType": "address", "name": "sponsor", "type": "address" }
     ],
     "name": "setCollectionSponsor",
-    "outputs": [],
-    "stateMutability": "nonpayable",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "address", "name": "newOwner", "type": "address" }
-    ],
-    "name": "setOwner",
     "outputs": [],
     "stateMutability": "nonpayable",
     "type": "function"

--- a/tests/src/eth/reFungibleToken.test.ts
+++ b/tests/src/eth/reFungibleToken.test.ts
@@ -76,34 +76,28 @@
     });
   });
 
-  async function setup(helper: EthUniqueHelper, tokenPrefix: string, propertyKey?: string, propertyValue?: string): Promise<{contract: Contract, nextTokenId: string}> {
+  async function setup(helper: EthUniqueHelper, baseUri: string, propertyKey?: string, propertyValue?: string): Promise<{contract: Contract, nextTokenId: string}> {
     const owner = await helper.eth.createAccountWithBalance(donor);
     const receiver = helper.eth.createAccount();
 
-    const collectionHelper = helper.ethNativeContract.collectionHelpers(owner);
-    let result = await collectionHelper.methods.createERC721MetadataCompatibleCollection('Mint collection', 'a', 'b', tokenPrefix).send({value: Number(2n * helper.balance.getOneTokenNominal())});
-    const collectionAddress = helper.ethAddress.normalizeAddress(result.events.CollectionCreated.returnValues.collectionId);
+    const {collectionAddress} = await helper.eth.createERC721MetadataCompatibleRFTCollection(owner, 'Mint collection', 'a', 'b', baseUri);
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', owner);
-    
-    const nextTokenId = await contract.methods.nextTokenId().call();
-    expect(nextTokenId).to.be.equal('1');
-    result = await contract.methods.mint(
-      receiver,
-      nextTokenId,
-    ).send();
 
-    if (propertyKey && propertyValue) {
-      // Set URL or suffix
-      await contract.methods.setProperty(nextTokenId, propertyKey, Buffer.from(propertyValue)).send();
-    }
+    const result = await contract.methods.mint(receiver).send();
 
     const event = result.events.Transfer;
+    const tokenId = event.returnValues.tokenId;
+    expect(tokenId).to.be.equal('1');
     expect(event.address).to.be.equal(collectionAddress);
     expect(event.returnValues.from).to.be.equal('0x0000000000000000000000000000000000000000');
     expect(event.returnValues.to).to.be.equal(receiver);
-    expect(event.returnValues.tokenId).to.be.equal(nextTokenId);
 
-    return {contract, nextTokenId};
+    if (propertyKey && propertyValue) {
+      // Set URL or suffix
+      await contract.methods.setProperty(tokenId, propertyKey, Buffer.from(propertyValue)).send();
+    }
+
+    return {contract, nextTokenId: tokenId};
   }
 
   itEth('Empty tokenURI', async ({helper}) => {
@@ -112,18 +106,18 @@
   });
 
   itEth('TokenURI from url', async ({helper}) => {
-    const {contract, nextTokenId} = await setup(helper, 'BaseURI_', 'url', 'Token URI');
+    const {contract, nextTokenId} = await setup(helper, 'BaseURI_', 'URI', 'Token URI');
     expect(await contract.methods.tokenURI(nextTokenId).call()).to.be.equal('Token URI');
   });
 
-  itEth('TokenURI from baseURI + tokenId', async ({helper}) => {
+  itEth('TokenURI from baseURI', async ({helper}) => {
     const {contract, nextTokenId} = await setup(helper, 'BaseURI_');
-    expect(await contract.methods.tokenURI(nextTokenId).call()).to.be.equal('BaseURI_' + nextTokenId);
+    expect(await contract.methods.tokenURI(nextTokenId).call()).to.be.equal('BaseURI_');
   });
 
   itEth('TokenURI from baseURI + suffix', async ({helper}) => {
     const suffix = '/some/suffix';
-    const {contract, nextTokenId} = await setup(helper, 'BaseURI_', 'suffix', suffix);
+    const {contract, nextTokenId} = await setup(helper, 'BaseURI_', 'URISuffix', suffix);
     expect(await contract.methods.tokenURI(nextTokenId).call()).to.be.equal('BaseURI_' + suffix);
   });
 });
@@ -294,11 +288,11 @@
   itEth('Receiving Transfer event on burning into full ownership', async ({helper}) => {
     const caller = await helper.eth.createAccountWithBalance(donor);
     const receiver = await helper.eth.createAccountWithBalance(donor);
-    const {collectionId, collectionAddress} = await helper.eth.createRefungibleCollection(caller, 'Devastation', '6', '6');
+    const {collectionId, collectionAddress} = await helper.eth.createRFTCollection(caller, 'Devastation', '6', '6');
     const contract = helper.ethNativeContract.collection(collectionAddress, 'rft', caller);
 
-    const tokenId = await contract.methods.nextTokenId().call();
-    await contract.methods.mint(caller, tokenId).send();
+    const result = await contract.methods.mint(caller).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
     const tokenAddress = helper.ethAddress.fromTokenId(collectionId, tokenId);
     const tokenContract = helper.ethNativeContract.rftToken(tokenAddress, caller);
 
@@ -484,11 +478,12 @@
   itEth('Default parent token address and id', async ({helper}) => {
     const owner = await helper.eth.createAccountWithBalance(donor);
 
-    const {collectionId, collectionAddress} = await helper.eth.createRefungibleCollection(owner, 'Sands', '', 'GRAIN');
+    const {collectionId, collectionAddress} = await helper.eth.createRFTCollection(owner, 'Sands', '', 'GRAIN');
     const collectionContract = helper.ethNativeContract.collection(collectionAddress, 'rft', owner);
-    
-    const tokenId = await collectionContract.methods.nextTokenId().call();
-    await collectionContract.methods.mint(owner, tokenId).send();
+
+    const result = await collectionContract.methods.mint(owner).send();
+    const tokenId = result.events.Transfer.returnValues.tokenId;
+
     const tokenAddress = helper.ethAddress.fromTokenId(collectionId, tokenId);
     const tokenContract = helper.ethNativeContract.rftToken(tokenAddress, owner);
 

--- a/tests/src/eth/util/playgrounds/unique.dev.ts
+++ b/tests/src/eth/util/playgrounds/unique.dev.ts
@@ -43,12 +43,12 @@
     if(!imports) return function(path: string) {
       return {error: `File not found: ${path}`};
     };
-  
+
     const knownImports = {} as {[key: string]: string};
     for(const imp of imports) {
       knownImports[imp.solPath] = (await readFile(imp.fsPath)).toString();
     }
-  
+
     return function(path: string) {
       if(path in knownImports) return {contents: knownImports[path]};
       return {error: `File not found: ${path}`};
@@ -71,7 +71,7 @@
         },
       },
     }), {import: await this.findImports(imports)})).contracts[`${name}.sol`][name];
-  
+
     return {
       abi: out.abi,
       object: '0x' + out.evm.bytecode.object,
@@ -94,7 +94,7 @@
   }
 
 }
-  
+
 class NativeContractGroup extends EthGroupBase {
 
   contractHelpers(caller: string): Contract {
@@ -145,14 +145,14 @@
   async createAccountWithBalance(donor: IKeyringPair, amount=100n) {
     const account = this.createAccount();
     await this.transferBalanceFromSubstrate(donor, account, amount);
-  
+
     return account;
   }
 
   async transferBalanceFromSubstrate(donor: IKeyringPair, recepient: string, amount=100n, inTokens=true) {
     return await this.helper.balance.transferToSubstrate(donor, evmToAddress(recepient), amount * (inTokens ? this.helper.balance.getOneTokenNominal() : 1n));
   }
-  
+
   async getCollectionCreationFee(signer: string) {
     const collectionHelper = this.helper.ethNativeContract.collectionHelpers(signer);
     return await collectionHelper.methods.collectionCreationFee().call();
@@ -174,22 +174,32 @@
     return await this.helper.callRpc('api.rpc.eth.call', [{from: signer, to: contractAddress, data: abi}]);
   }
 
-  async createNonfungibleCollection(signer: string, name: string, description: string, tokenPrefix: string): Promise<{collectionId: number, collectionAddress: string}> {
+  async createNFTCollection(signer: string, name: string, description: string, tokenPrefix: string): Promise<{collectionId: number, collectionAddress: string}> {
     const collectionCreationPrice = this.helper.balance.getCollectionCreationPrice();
     const collectionHelper = this.helper.ethNativeContract.collectionHelpers(signer);
-        
-    const result = await collectionHelper.methods.createNonfungibleCollection(name, description, tokenPrefix).send({value: Number(collectionCreationPrice)});
 
+    const result = await collectionHelper.methods.createNFTCollection(name, description, tokenPrefix).send({value: Number(collectionCreationPrice)});
+
     const collectionAddress = this.helper.ethAddress.normalizeAddress(result.events.CollectionCreated.returnValues.collectionId);
     const collectionId = this.helper.ethAddress.extractCollectionId(collectionAddress);
 
     return {collectionId, collectionAddress};
   }
 
-  async createRefungibleCollection(signer: string, name: string, description: string, tokenPrefix: string): Promise<{collectionId: number, collectionAddress: string}> {
+  async createERC721MetadataCompatibleNFTCollection(signer: string, name: string, description: string, tokenPrefix: string, baseUri: string): Promise<{collectionId: number, collectionAddress: string}> {
+    const collectionHelper = this.helper.ethNativeContract.collectionHelpers(signer);
+
+    const {collectionId, collectionAddress} = await this.createNFTCollection(signer, name, description, tokenPrefix)
+
+    await collectionHelper.methods.makeCollectionERC721MetadataCompatible(collectionAddress, baseUri).send();
+
+    return {collectionId, collectionAddress};
+  }
+
+  async createRFTCollection(signer: string, name: string, description: string, tokenPrefix: string): Promise<{collectionId: number, collectionAddress: string}> {
     const collectionCreationPrice = this.helper.balance.getCollectionCreationPrice();
     const collectionHelper = this.helper.ethNativeContract.collectionHelpers(signer);
-        
+
     const result = await collectionHelper.methods.createRFTCollection(name, description, tokenPrefix).send({value: Number(collectionCreationPrice)});
 
     const collectionAddress = this.helper.ethAddress.normalizeAddress(result.events.CollectionCreated.returnValues.collectionId);
@@ -198,6 +208,16 @@
     return {collectionId, collectionAddress};
   }
 
+  async createERC721MetadataCompatibleRFTCollection(signer: string, name: string, description: string, tokenPrefix: string, baseUri: string): Promise<{collectionId: number, collectionAddress: string}> {
+    const collectionHelper = this.helper.ethNativeContract.collectionHelpers(signer);
+
+    const {collectionId, collectionAddress} = await this.createRFTCollection(signer, name, description, tokenPrefix)
+
+    await collectionHelper.methods.makeCollectionERC721MetadataCompatible(collectionAddress, baseUri).send();
+
+    return {collectionId, collectionAddress};
+  }
+
   async deployCollectorContract(signer: string): Promise<Contract> {
     return await this.helper.ethContract.deployByCode(signer, 'Collector', `
     // SPDX-License-Identifier: UNLICENSED
@@ -288,7 +308,7 @@
     };
     return await this.helper.arrange.calculcateFee(address, wrappedCode);
   }
-}  
+}
 
 class EthAddressGroup extends EthGroupBase {
   extractCollectionId(address: string): number {
@@ -319,8 +339,8 @@
   normalizeAddress(address: string): string {
     return '0x' + address.substring(address.length - 40);
   }
-}  
- 
+}
+
 export type EthUniqueHelperConstructor = new (...args: any[]) => EthUniqueHelper;
 
 export class EthUniqueHelper extends DevUniqueHelper {
@@ -373,4 +393,3 @@
     return newHelper;
   }
 }
-  
\ No newline at end of file

--- a/tests/src/util/playgrounds/unique.ts
+++ b/tests/src/util/playgrounds/unique.ts
@@ -1026,6 +1026,10 @@
     return (await this.helper.callRpc('api.rpc.unique.collectionProperties', [collectionId, propertyKeys])).toHuman();
   }
 
+  async getCollectionOptions(collectionId: number) {
+    return (await this.helper.callRpc('api.rpc.unique.collectionById', [collectionId])).toHuman();
+  }
+
   /**
    * Deletes onchain properties from the collection.
    *
@@ -2839,6 +2843,10 @@
     return await this.helper.collection.getTokenNextSponsored(this.collectionId, tokenId, addressObj);
   }
 
+  async getOptions() {
+    return await this.helper.collection.getCollectionOptions(this.collectionId);
+  }
+
   async setSponsor(signer: TSigner, sponsorAddress: TSubstrateAccount) {
     return await this.helper.collection.setSponsor(signer, this.collectionId, sponsorAddress);
   }