During February 2026, this developer enhanced the prebid/prebid-server repository by delivering a focused feature in the ORTB blocking module. They implemented media type attribute validation, ensuring that banner, video, and audio attributes are strictly applied only to their relevant media types. This approach reduced the risk of cross-media attribute leakage and improved the reliability of ORTB request handling. Working primarily in Go, the developer applied backend development and API design skills, incorporating unit testing to verify correctness. The work demonstrated a targeted, in-depth contribution, addressing a specific data integrity concern within the module and strengthening the overall request validation process.