During November 2024, contributed to the InjectiveLabs/injective-ts repository by implementing targeted test coverage for PrivateKey signing and verification within the sdk-ts module. This work focused on ensuring that signing and verification processes align precisely with Ethereum-compatible wallet standards, reducing the risk of mis-signatures and improving interoperability. Leveraging TypeScript, Ethers.js, and Node.js, the new tests enhance the reliability of cryptographic key management and accelerate bug detection in signing flows. By improving the test suite, the changes support safer future development and integration with Ethereum wallets, strengthening security controls and providing a more robust foundation for downstream feature work.