During December 2024, this developer focused on enhancing the reliability of the Bitcoin checkpoint transmission path in the babylonlabs-io/vigilante repository. Working primarily with Go, they addressed a critical bug by modifying the SendCheckpointToBTC function to skip over failed checkpoints rather than allowing the process to crash, thereby maintaining throughput and reducing downtime risk. Their approach emphasized robust error handling and rapid debugging in a live production environment. They also updated project documentation and the changelog to ensure traceability and clear communication with stakeholders. This work improved the resilience and operational stability of the BTC checkpoint delivery pipeline.