NFT (English non-fungible token, translated from English - "non-fungible token"), also a unique token - a type of cryptographic tokens, each instance of which is unique (specific) and cannot be exchanged or replaced by another similar token[1], although usually tokens are fungible in nature. A non-fungible token is a cryptographic certificate of a digital object with the ability to transfer the certificate through the mechanism used in cryptocurrencies. The token itself is not a confirmation of the right to own a digital asset in the context of copyright law. NFT does not prevent the copying of an object, it only assigns to the owner a "digital token" created on the basis of one of the copies of the digital artifact. There is also no barrier to generating multiple different tokens for the same file. But if the participants agree that only the real owner can form the NFT and the further transfer of the NFT occurs only in connection with the transfer of the corresponding rights to the original digital object, then the NFT can act as a marker indicating the current owner of the object. NFTs have been criticized for their high energy costs and high carbon dioxide emissions during transaction verification, as well as the use of NFTs by fraudsters. The usefulness of establishing property rights in an often illegal, unregulated market is also called into question.