Worked on stabilizing cryptographic signing paths within the urbit/urbit repository, focusing on backend development and cryptography using Hoon. Addressed a critical bug in the signature generation logic for the Ames and Jael modules, which improved the reliability of message signing and proof generation across the system. The approach involved hardening the +sign:as replacement logic to prevent future regressions and ensure robust cross-module trust. Delivered changes through a focused, well-documented commit, emphasizing traceability and ease of review. This work enhanced the stability of cryptographic workflows and contributed to the overall security and maintainability of the codebase.