Bruno Rit focused on improving transaction formatting reliability in the LedgerHQ/clear-signing-erc7730-registry repository during February 2026. He addressed a targeted bug in the OKX swapWrap flow by generalizing the WETH Amount path to a generic Amount, ensuring consistent token and amount representation. This change reduced the risk of misformatted transactions and enhanced the robustness of signing flows. Bruno applied a minimal, well-scoped patch to the smart contract integration, maintaining repository stability. His work leveraged blockchain development skills and JSON for transaction data handling, demonstrating careful attention to correctness and reliability in a highly specialized, security-sensitive codebase.