A non-fungible token (NFT) is a one-of-a-kind, non-transferable data unit kept on a digital ledger (blockchain). [1] NFTs can be used to represent easily-reproducible goods like images, movies, audio, and other forms of digital files as unique assets (similar to a certificate of authenticity) and to generate a verified and public evidence of ownership using blockchain technology. Copies of the original file are not limited to the NFT's owner and can be copied and shared just like any other file. NFTs are distinguished from blockchain cryptocurrencies like Bitcoin by their lack of interchangeability (fungibility).
The first NFT project was established in 2015 on the Ethereum blockchain, and it has since gained a lot of traction.