Nenad Mitt delivered CELO blockchain support for the ensdomains/ens-app-v3 repository, expanding the application’s multi-chain capabilities and enabling users to interact with CELO addresses and block explorers. He integrated CELO into the app’s chain list and updated localization files and constants, ensuring consistent user experience across different languages. Using TypeScript and JSON handling, Nenad implemented the CELO/CCIP names feature, laying the groundwork for cross-chain name resolution and unlocking new user segments. The work focused on foundational engineering rather than bug fixes, demonstrating depth in blockchain development and careful attention to interoperability and internationalization within a complex, production-grade codebase.