cosmos/ibc-go modules/light-clients/08-wasm/v0.3.0+ibc-go-v8.3-wasmvm-v2.0 on GitHub

Highlights 🌟

We present here a summary of the most relevant changes, please see the changelog for the full set of changes included in this release.

Update of wasmvm to v2.1.0.
Add a new MerklePath type that replaces the usage of ibc-go's MerklePath for the Path field of the VerifyMembershipMsg and VerifyNonMembershipMsg structs of the contract API. Please note that this change is API breaking for light contracts and it requires a migration for existing contracts to correctly handle deserialization of the KeyPath field which has changed from []string to [][]byte. In JSON message structures this change is reflected as the KeyPath being marshalled as a list of base64 encoded byte strings. This change supports proving values stored under keys which contain non-utf8 encoded symbols. See the migration documentation for more details. For chains on v8.3 or above in the v8 line that have not deployed a light client contract yet, we strongly recommend to upgrade to this release first and then deploy the updated contract. Otherwise, chains will need to migrate the contract later on.
Add an implementation of the ConsensusHost interface for custom self client/consensus state validation.

Please check out the migration docs to upgrade to this release from v0.2.x compatible with ibc-go v8.3.x.

In order to use this release, please follow the steps to import git commit bb71eef.

Special thanks to all external contributors that pushed code for this release: