By far the most popular form of NFT is digital art. Thousands of digital artworks have been minted and sold as NFTs, with many fetching prices in the millions. The popularity of digital art made into NFTs lies in the promise of authenticity: NFTs allow digital artworks to become truly “original” in the sense that a famous painting such as the Mona Lisa is original. It can be copied and printed, but there is only one original version. This has made digital artworks extremely valuable.