Worked on enhancing the reliability and concurrency of the ProvableHQ/snarkVM blockchain project by addressing a critical deadlock issue in ledger block validation. Focused on concurrency control, the developer implemented a fix to prevent reentry into the current block’s RwLock during validation, eliminating a potential source of deadlocks. Additionally, timestamp-based checks for solution limits were introduced to improve throughput under high contention scenarios. This work, carried out in Rust, strengthened the stability and predictability of block validation processes. The approach demonstrated a deep understanding of blockchain development and concurrent programming, resulting in more robust ledger operations without introducing new features.