Downloadable files authenticated by non-fungible tokens (NFTs); Downloadable books 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 books, literary works or audio files; downloadable software for use in electronically trading, storing, sending, receiving, accepting and transmitting crypto-collectibles, non-fungible tokens and other application tokens; platform as a service featuring software platforms for providing access, download and purchases to crypto-collectibles, non-fungible tokens and other application tokens containing literary or audio works; providing temporary use in electronically trading, storing, sending, receiving, accepting and transmitting digital currency, crypto-collectibles, non-fungible tokens and other application tokens, and managing digital transactions; software as a service (SAAS) and platform as a service (PAAS) featuring software for use in connection with providing a digital platform for navigating digital works of literary text or audiobooks, crypto-collectibles, non-fungible tokens and other application tokens, and non-fungible token marketplaces and auctions; Software as a service and platform as a service featuring software for use in connection with providing information for digital literary or audio works, crypto-collectibles, non-fungible tokens and other application tokens; downloadable image files containing literary or audio works authenticated by non-fungible tokens (NFTs); Financial transaction services, namely, administrating nonfungible tokens (NFTS) using blockchain technology in the field of trading literary works and related audio collectibles