Contract OS

Statechain-powered execution OS for Smart Pages, apps, games & smart contracts.

Contract OS sits on top of a Statechain and runs a custom protocol, consensus, and smart contracts. Deploy Smart Pages (single file websites as contracts), dApps/gApps, games, and replay-verified experiences, with developer grade tooling.

✅ Smart Pages: single file pages deployed as smart contracts (static or interactive)

✅ Statechain execution + replay verification for deterministic, auditable experiences

✅ Builder + ecosystem tools (Nine Chain, docs, demos) for production workflows

Open Builder Nine Fabric Demo Nine Docs Sign In Create Account Nine Chain

A+ security headers CSP + HSTS enabled Built for verifiable execution