In June 2025, Aten delivered a configuration update to the ethereum-optimism/superchain-registry repository, focusing on Swell Mainnet’s Holocene hardfork timing. Aten managed the upgrade by modifying the swell.toml file, introducing a configurable timestamp to schedule and enforce the network upgrade in alignment with governance requirements. The work emphasized robust configuration management and traceable change control, using TOML as the primary language. Aten’s approach improved upgrade readiness and operational reliability by ensuring that changes were well-documented and easily auditable. While the scope was focused, the work demonstrated careful attention to process, documentation, and the technical demands of mainnet configuration.