Christie's recently sold its first "all digital work of art" for $69 million. Cryptographic artwork contributes to greenhouse gas emissions in several ways. NFTs have been dubbed a "ecological nightmare pyramid scheme" by artists. Following criticism, ArtStation scrapped its plans to launch a forum for non-fungible tokens (NFTs). An NFT is a one-of-a-kind cryptocurrency token that can take the form of digital art, GIFs, or even the first tweet from Twitter CEO Jack Dorsey.