For a more technical definition following the citations: > NFTs are distinguishable and you must track the ownership of each one separately. > The pair (contr

For a more technical definition following the citations: > NFTs are distinguishable and you must track the ownership of each one separately. > The pair (contract address, uint256 tokenId) will then be a globally unique and fully-qualified identifier for a specific asset on an Ethereum chain. https://eips.ethereum.org/EIPS/eip-721 https://eips.ethereum.org/EIPS/eip-721