Contributed to the evmos/evmos repository by developing a targeted test to enhance EIP-712 legacy transaction handling. Focused on verifying the correct wrapping of Cosmos SDK transactions into EIP-712 typed data, the work involved implementing TestLegacyWrapTxToTypedData in Go. This addition improved test coverage for the EIP-712 legacy path, enabling earlier detection of regressions and increasing confidence in protocol changes. The approach emphasized thorough validation of domain and message fields, as well as type presence, to ensure reliable cross-chain signing and interoperability with Ethereum-style typed data. Skills applied included blockchain development, EVM integration, and comprehensive testing practices.