Worked on the cosmos/chain-registry repository, focusing on configuration management to enhance reliability and usability for blockchain testnets. Addressed UI consistency by updating the XPLA testnet display name and improved user access by fixing broken explorer URLs, ensuring accurate blockchain data retrieval. In addition, stabilized the FetchHub testnet by correcting gas price configurations, which reduced flaky test outcomes and supported smoother development cycles. All changes were implemented using JSON and followed disciplined commit practices for traceability and onboarding efficiency. The work emphasized configuration correctness and reliability, contributing to more predictable testnet operations and improved developer productivity within the chain-registry ecosystem.