During July 2025, Hmchanar focused on backend development and error handling for the kaiachain/kaia repository, addressing a critical issue in the staking module. He fixed a bug in the klay_getRewards RPC by improving error wrapping and resolving upstream redirection problems that previously affected state fetch accuracy. Working primarily with Go, Hmchanar enhanced the reliability of rewards processing and increased trust in the staking workflow by ensuring more robust error diagnostics and reducing the risk of future failures. Although the work was limited to a single targeted bug fix, it demonstrated careful attention to system stability and maintainability.