During December 2025, Golovatenko updated the OasisProtocol/docs repository to deliver comprehensive documentation for the Oasis Core 25.9 TESTNET release. Focusing on technical writing and documentation skills, Golovatenko revised the testnet.md file using Markdown to ensure all version references were consistent and aligned with the latest release notes. This update standardized terminology across the TESTNET documentation, improving clarity and reducing potential onboarding issues for developers. By maintaining high documentation quality and addressing versioning standards, Golovatenko’s work provided a clear, up-to-date resource for TESTNET users, ultimately streamlining developer onboarding and minimizing the need for additional support or clarification.