Worked on the anza-xyz/agave repository to deliver a major upgrade to the RpcClient, focusing on backend development and API design using Rust. Developed a new API method that retrieves the latest blockhash along with its context, including the observing slot and lastValidBlockHeight, allowing clients to submit and confirm transactions in a single call. Refactored the existing get_latest_blockhash logic to route through this new path, reducing code duplication and simplifying parsing. Addressed context.slot preservation to eliminate the need for lower-level raw sends, ultimately reducing RPC round-trips and improving transaction reliability for users interacting with the blockchain backend.