Worked on the LedgerHQ/clear-signing-erc7730-registry repository to deliver integration of the CoreDAO Earn contract, focusing on enabling system-wide earnings features. Developed and committed the smart contract using Solidity, ensuring that the contract’s JSON artifact, metadata, and ABI were properly updated for seamless registry usage and reproducible deployments. The approach emphasized traceability by linking all changes to a specific issue for auditability and collaborative tracking. Leveraged skills in smart contract development and JSON to align contract artifacts with system requirements, supporting future extensibility. The work addressed integration needs without introducing bug fixes, reflecting a focused and methodical engineering process.