versu!
Hardware-verified rhythm game on chain. Pay 1 USDC for 3 games. Entry fees fund the prize pool.
Demo
About
versu! is a browser rhythm game with a verifiable Sui leaderboard. Players buy three ranked plays for 1 USDC. A trustable bridge hardware signs gameplay inputs, and a custom GKR proof verifies scores on-chain (Sui). World ID prevents duplicate prize claims; smart contracts split the daily prize pool among the top five.
How it's made
We built the game with React and PixiJS, using Mysten’s Sui SDK and WalletConnect for payments. BridgeOS (which belongs to the bridge hardware) records and signs USB HID inputs. a Rust prover generates a custom GKR/sumcheck score proof, which Sui Move verifies before recording a score. Sui contracts hold USDC and distribute prizes, while World ID prevent duplicate prize claims. The unusual part is binding a hardware-signed input trace to a proof Sui can verify. The current keys and proof setup are for a demo.