During May 2025, 257byte focused on backend development within the AztecProtocol/aztec-packages repository, addressing a critical bug in the transaction proving pipeline. They identified and corrected a schema typo in TxProvingResult that incorrectly referenced ProvingTimingsSchema, which had been causing Zod parsing errors during PXE.proveTx operations. By leveraging TypeScript and schema validation expertise, 257byte’s targeted fix improved the reliability of transaction proving result processing and reduced downstream failures. The work demonstrated careful debugging and a strong understanding of data validation flows, contributing to a more stable backend system despite the short engagement and limited feature development during the period.