Downloadable files authenticated by non-fungible tokens (NFTs); Downloadable multimedia files containing artwork, text, audio, and video authenticated by non-fungible tokens (NFTs); Provision of an online marketplace for buyers and sellers of downloadable digital files authenticated by non-fungible tokens (NFTs); Downloadable software for viewing crypto-collectibles, non-fungible tokens and other application tokens containing artwork, text, audio, and video; Downloadable software for use in e...