A non-fungible token (NFT) is a unit of data stored on a digital
ledger, called a blockchain, that certifies a digital asset to
be unique and therefore not interchangeable. NFTs can be used to
represent items such as photos, videos, audio, and other types
of digital files. Access to any copy of the original file,
however, is not restricted to the buyer of the NFT. While copies
of these digital items are available for anyone to obtain, NFTs
are tracked on blockchains to provide the owner with a proof of
ownership that is separate from copyright.