A woman looks at an NFT titled "CURIO CARDS (EST. 2017)," a full set of 30 cards plus 17 billion non-fungible tokens, during a press preview Sept 28, 2021, at Christie's auction house in New York, for their live auction "Post-War to Present: The NFTs" on Oct 1, 2021. (Photo by TIMOTHY A. CLARY / AFP)