A Non Fungible Token (NFT) is a kind of cryptographic token in a blockchain that represents an exclusive assar.

They may be totally digital or tokenized versions of real world assets. Since NFTs are not interchangeable between themselves, they may function as a proof of authenticity and property in the digital realm. There are many structures and systems to create and emit NFTs. The most important of them all is ERC-721 a pattern of emission and negotiation of non fungible assets in the Euthereum blockchain. NFTs may be negotiable at open markets like Makersplace and OpenSea.
These markets connect buyers and sellers.