git.delta.rocks / unique-network / refs/commits / fe3acb0e9993

no changes

--- /dev/null
+++ b/doc/sponsoring.md
@@ -0,0 +1,16 @@
+# Sponsoring
+
+<!-- This SVG file can be opened and edited using draw.io -->
+![Sponsoring flow](./sponsoring-flow.svg)
+
+## Implementation
+
+If you need to add sponsoring for pallet call, you should implement `SponsorshipHandler<AccountId, Call, ()>`
+
+If you need to add sponsoring for EVM contract call, you should implement `SponsorshipHandler<H160, (H160, Vec<u8>), CallContext>`
+
+For both examples, you can take a look at `UniqueSponsorshipHandler` struct inside of common runtime
+
+## EVM bridging
+
+In case if Ethereum call is being called using substrate `evm.call` extrinsic, `BridgeSponsorshipHandler` is used to convert between two different `SponsorshipHandler` types