Battlemat vs Co

Build battle maps and encounters in seconds, invite players with a link, and keep maps, tokens, fog, and initiative synced in real time.

Every AI coding agent signs its commits with a forgeable plain-text line.

About Battlemat

Build battle maps and encounters in seconds, invite players with a link, and keep maps, tokens, fog, and initiative synced in real time. Build playable scenes and encounters in seconds, invite your players with a link, and keep every move in sync, without turning game night into software setup or a multi-hour prep session. Maps, tokens, terrain, fog, and initiative order in one focused view that renders blazingly fast and is synced in real time. Create mats, encounters, monsters, and NPCs, including their token art and stat blocks using plain language, via voice or text.

About Co

Every AI coding agent signs its commits with a forgeable plain-text line. Co-authored-by is a Lie: Cryptographic Provenance for AI Coding Agents . It matters now, because the attribution metadata is starting to be used to make trust decisions, and that turns a cosmetic line into an attack surface. Commit metadata has always been trivial to fake unless signing is enforced. So over a couple of evenings I built the missing half: a producer-attribution layer where attribution is backed by a hardware key, enforced automatically, and verifiable .