During April 2025, F. Coleman enhanced the Chia-Network/chia-blockchain repository by implementing a simulator configuration update that set the AGG_SIG_ME_ADDITIONAL_DATA parameter to the genesis challenge hash. This change, made in config.yaml using Python and YAML, improved deterministic data handling within the simulator, ensuring consistent and reliable simulation results across runs. Coleman's work focused on configuration management and blockchain development, addressing the need for stable and reproducible test environments. By refining simulator functionality rather than fixing bugs, Coleman contributed to the overall reliability and quality assurance process, demonstrating a disciplined approach to config-driven engineering and cryptographic parameter management.