Provision of an on-line marketplace for buyers and sellers of downloadable digital art images authenticated by non-fungible tokens (NFTs) with the commercial rights and the details thereof; Provision of an on-line marketplace for buyers and sellers of physical goods based on digital art images authenticated by NFTs; Provision of an online marketplace for buyers and sellers of downloadable digital art images authenticated by non-fungible tokens (NFTs); Provision of an online marketplace for buyers and sellers of downloadable digital images and image files that support both animated and static images authenticated by non-fungible tokens (NFTs); Operating on-line marketplaces featuring a marketplace connecting licensors and licensees of commercial rights associated with NFTs; Providing a website for connecting sellers with buyers; Providing an on-line computer database featuring trade information in the field of NFT projects with associated commercial rights and the details thereof