Getting Started
The CosmWasm module leverages the ibc-go implementation to enable interaction with other blockchains through the Inter-Blockchain Communication (IBC) protocol. With the release of ibc-go version 10, a new protocol version—IBCv2—was introduced. IBCv2 expands the interoperability of the Cosmos ecosystem to include non-Cosmos blockchains. To support this broader scope, the protocol team simplified the communication model and reduced the number of required entry points. This streamlining makes it more practical to implement IBC support on chains such as Ethereum. As a result, smart contract developers now need to implement only a few well-defined entry points to fully harness cross-chain capabilities.
To use IBCv2 entry points and messages in your smart contract, ensure that the ibc2 feature is
enabled in your cosmwasm-std dependency. Add the following to your Cargo.toml:
cosmwasm-std = { version = "3.0", features = ["ibc2"] }This section of the documentation provides a basic overview of how to configure smart contracts to use IBCv2 entry points and communicate with services and contracts on other chains. For a deeper understanding of the IBC architecture, refer to the official ibc-go documentation.