Showcase · Vol. 01

Working demos, deployed live.

Reference builds from the prompt library. Each demo is a real contract on Ethereum Sepolia with social login via Privy — no MetaMask, no faucet, no setup.

Dance · Optimism Sepolia DeployLive ↗

Choreo Ledger

Timestamp original choreography on-chain. Sign in with Google, paste an IPFS CID or a move's hash, and emit a permanent Logged event on Optimism Sepolia.

0x8D7DBbe70E6D8711D0eAAd52d36BC2A6B1861669

Payments · x402 · USDCLive ↗

x402 Paywall

Pay-per-request in USDC on Optimism Sepolia via the self-hosted x402 facilitator. Sign an EIP-3009 authorization from your embedded wallet — no gas, no wallet popup.

facilitator: self-hosted x402 facilitator