For those still becoming familiar with NFTs ("Non-Fungible Tokens"), they use the Ethereum blockchain to sell original versions of digital artefacts. An example would be Andy Warhol's famed Campbell's Soup can. Were Warhol alive and creating this artwork today, he might choose to release it as a token on the blockchain, with only one original owner registered, as an NFT is a token we use to represent a right in something we own.