Worked on the neo-project/neo repository to optimize Base58 encoding and decoding, focusing on accelerating address and transaction operations while reducing memory allocations. Developed a feature that introduced a precomputed decode map and refactored the Base58 logic, resulting in improved runtime throughput and lower memory pressure in core data paths. The approach simplified code maintenance and reduced garbage collection overhead in performance-critical areas. Leveraged C# and applied expertise in cryptography and performance optimization to deliver these enhancements. The changes contributed to faster, more scalable wallet and node operations, directly impacting the efficiency of address and transaction handling within the project.