Billy contributed to the InjectiveLabs/injective-ts repository by developing targeted test coverage for PrivateKey signing and verification, focusing on compatibility with Ethereum wallets. Using TypeScript and Ethers.js within a Node.js environment, Billy implemented a new test case in the sdk-ts module to ensure that signing and verification processes align with Ethereum’s established mechanisms. This work addressed potential mis-signature risks and improved the reliability of key management and wallet interoperability. By enhancing the test suite, Billy enabled earlier detection of signing-related bugs and provided a safer foundation for future feature development involving cryptography and Ethereum-compatible wallet integrations.