A man is seen in silhouette standing in front of "Quantum" by Kevin McCoy, a non-fungible token (NFT) which Sotheby's auction house says is the first known digital art collectible created in 2014, during a media preview for the "Natively Digital: A Curated NFT Sale" auction at Sotheby's in New York City, U.S., June 4, 2021. REUTERS/Shannon Stapleton