modules/light-clients/08-wasm/v0.3.0+ibc-go-v7.3-wasmvm-v1.5

Highlights 🌟

We present here a summary of the most relevant changes, please see the changelog for more details.

• In v0.2.0+ibc-go-v7.3-wasmvm-v1.5 we added a new MerklePath type and used it for the Path field of the VerifyMembershipMsg and VerifyNonMembershipMsg structs of the contract API. This change was API breaking for light contracts and it required a migration for existing contracts to correctly handle deserialization of the KeyPath field (which had changed from []string to [][]byte). In this release we are making an extra change to explicitly break the contract API JSON message field name: the path field of the JSON-encoded VerifyMembershipMsg and VerifyNonMembershipMsg messages has been ranamed to merkle_path, so that light client contracts would not silently unmarshal a key as a base64 encoded string value (and instead fail to unmarshal the message entirely).

All previous releases of the 08-wasm compatible with ibc-go v7.3 and wasmvm v1.5 have been retracted and we strongly recommend contract developers to update their JSON API message structure for the SudoMsg payloads VerifyMembershipMsg and VerifyNonMembershipMsg.

For chains on v7.3 or above in the v7 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.

Migration 🦆

Please check out the migration docs to upgrade to this release from v0.2.x compatible with ibc-go v7.3.x.

In order to use this release, please follow the steps to import git commit 86f7c39.