Robinhood Chain · escrowed ERC-721
Lock the NFT in the contract. Sell tickets in ETH or $BEER. 1% to the house, 99% to the creator — paid on every ticket. When the clock hits zero the tickets are sealed, shuffled, and one number is drawn on-chain.
Preview floor — after Remix deploy, paste the contract address in js/config.js to go live on-chain.