10,000 unique collectible characters with proof of ownership stored on the Ethereum blockchain. The project that inspired the modern CryptoArt movement. An inspiration for the Ethereum ERC-721 standard that powers most digital art and collectibles. No two punks are alike, and each one of them can be officially owned by a single person on the Ethereum blockchain. Originally, they could be claimed for free by anybody with an Ethereum wallet, but all 10,000 were quickly claimed. Now they must be purchased from someone on the Ethereum marketplace contract. Via the market, you can buy, bid on, and offer punks for sale.