Details and FAQ Where are the images stored?
When originally released, the actual images of the punks were too large to store on the blockchain, so we took a hash of the composite image of all the punks and embedded it into the contract. You can verify that the punks being managed by the Ethereum contract are the True Official Genuine NFT Art by calculating an SHA256 hash on the image and comparing it to the hash stored in the contract.
Since then, due to some clever compression ideas and some help from friends of the punks we have managed to put the entire image and attribute data fully on chain. You can read more about the mechanisms and details of the process in the announcement blog post.
Are these an ERC-721 token?
No. The pre-date the ERC-721 standard and are a custom contract, that means it doesn't comply with any standards. They are almost an ERC20 token. We support the methods that provide your balance so you can watch them as a token in your wallet and see how many you own. None of the other methods are the same since you're not transferring a simple balance, but need to reference which specific Punk you want to work with.
Where does the market data on this site come from?
The prices, bids and sales you see on this site are loaded from the contract on the Ethereum blockchain. Because the pre-date the ERC-721 standard (and all third party NFT marketplaces) we also needed to write a market so the punks could be transacted. We have no control over the contract governing this market, and have no access to any additional data beyond what the blockchain provides.
Use of the tools on this website is strictly at your own risk and is governed by the Terms and Conditions.