Streamplace (https://stream.place) has been spending the last two years developing a novel form of decentralized public broadcast to facilitate a live video layer for Bluesky's AT Protocol. The basis of this system are C2PA-signed one-second MP4 files that can be deterministically muxed together into larger segments for archival. This talk will give a technical overview of how all the pieces fit together and show off how our freely-licensed media server facilitates cooperative livestreaming infrastructure.