Joao Luis Domingos developed a robust POL staking transaction validation feature for the LedgerHQ/clear-signing-erc7730-registry repository, focusing on Ethereum blockchain flows. He designed and implemented a comprehensive JSON schema to validate staking, unstaking, and reward withdrawal transactions, embedding contract details and function definitions to ensure secure and auditable operations. His work strengthened the validation pipeline by introducing new validators tailored for POL staking, aligning the workflow with Ethereum’s requirements. Leveraging skills in Ethereum, blockchain development, and smart contract validation, Joao delivered a foundational solution that enhances transaction security and governance, demonstrating depth in both schema design and validation logic.