Over a two-month period, Dada contributed to the ethereum/kohaku-commons and kohaku-extension repositories, focusing on security, privacy, and user experience improvements for blockchain wallet projects. Dada implemented a DKIM-based recovery mechanism for smart wallets and introduced a demo wallet extension with on-chain privacy features, using TypeScript and Solidity. They enhanced key management by integrating the derive-railgun-keys library, improving reliability and cryptographic security. Dada also streamlined the user interface by removing unnecessary tooltips and clarified onboarding documentation. Their work addressed both feature development and bug fixes, demonstrating depth in full stack development, dependency management, and continuous integration within blockchain environments.