By Courtesy of Sotheby’s Use only for Sotheby’s Times are tough for NFT owners, between falling cryptocurrency prices and declining sales volumes on platforms like OpenSea. Sotheby’s, however, is hoping to revive this market by auctioning non-fungible tokens by the likes of Beeple, Pak and XCopy on September 14. Times are tough for NFT owners, between falling cryptocurrency prices and declining sales volumes on platforms like OpenSea. Sotheby’s, however, is hoping to revive this market by auctioning non-fungible tokens by the likes of Beeple, Pak and XCopy on September 14. These NFTs come from…