NFT - token technology - has rapidly gained popularity in the cryptocurrency market. A unique digital certificate stored in the blockchain guarantees the originality of the object and gives exclusive rights to it. The NFT token is compared to a painting that may belong to a gallery, museum or private person, but viewers can see it in a catalog or at an exhibition. The blockchain guarantees the authenticity of non-fungible tokens. Thanks to this system, any user can check the origin and history of a particular NFT through the blockchain.