February 2026 — Key feature delivered: Reliable Cryptographic Data Retrieval via Updated URLs for Keccak and Poseidon circuits and witnesses by updating the base URL. This change, committed as cc53261dc00f8680602be8433a6c147d2f18fefc ("change download url"), eliminates dependency on the previous unstable endpoint and reduces fetch failures in downstream pipelines. Impact: more reliable cryptographic data provisioning, fewer pipeline interruptions, and faster test/deploy cycles. Demonstrates skills in URL-based resource management, change traceability, and secure handling of cryptographic assets.