SOS HELP

Does anyone know how to create the metadata for an NFT project like Proof where its one design but multiple NFTs on opensea?

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I’m unsure honestly, is that what proof uses?

Can you link the Proof you're looking at? There are so many on OS...

You see here its 1 design but multiple items. 

https://opensea.io/collection/proof-collective

They're using ERC721. So each token is unique, even if they currently have the same metadata. It looks like they set a baseURI in the contract, which returns some JSON with the image source: https://collective.proof.xyz/token-metadata/proof-pass/metadata.json