A non-Fungible token (NFT) is a unit of data in a digital ledger called a blockchain, where each NFT can represent a unique digital item and is therefore not interchangeable. NFTs can represent digital ¬les such as art, audio, video, and other forms of creative work. While the digital ¬les themselves are innately reproducible, the NFTs representing them are tracked on the underlying blockchains and provide proof of ownership to the recipients.