Eyeglasses; Sunglasses; Downloadable image files containing artwork authenticated by non-fungible tokens (NFTs); Downloadable multimedia file containing artwork relating to online and social media avatars authenticated by non-fungible tokens (NFTs); Downloadable virtual goods, namely, computer programs featuring artwork for use in online virtual worlds; Downloadable game software; Downloadable software for blockchain-based inventory management; Downloadable computer software for managing and verifying cryptocurrency transactions on a blockchain; Downloadable virtual reality game software; Downloadable computer software for use as a cryptocurrency wallet; Downloadable software for viewing crypto-collectibles, non-fungible tokens and other application tokens; Downloadable software for use in electronically trading, storing, sending, receiving, accepting and transmitting crypto-collectibles, non-fungible tokens and other application tokens; Downloadable software for use in electronically trading, storing, sending, receiving, accepting and transmitting digital currency, and managing digital currency payment and exchange transactions; Downloadable software for processing transactions related to crypto-collectibles, non-fungible tokens and other application tokens; Downloadable authentication software for communications with computers and computer networks; Downloadable image files containing artwork authenticated by non-fungible tokens (NFTs); Downloadable music files authenticated by non-fungible tokens (NFTs); Downloadable multimedia files containing audio and video relating to art authenticated by non-fungible tokens (NFTs); Downloadable audio recordings featuring music authenticated by non-fungible tokens (NFTs); Downloadable video recordings featuring artwork authenticated by non-fungible tokens (NFTs)