Worked on the bitcoin-sv/spv-wallet-go-client repository, focusing on backend development and authentication middleware. Addressed a critical bug by enhancing the request body encoding process, ensuring the authentication layer could reliably handle various body types such as byte slices, io.Reader streams, and JSON marshaled objects. This improvement reduced authentication failures and enabled more accurate logging for security auditing and onboarding. The solution was implemented in Go, leveraging skills in API integration and authentication. By refining the bodyString function, the developer improved the reliability of authentication data capture, resulting in fewer downstream issues and a more robust backend authentication workflow.