Authenticating works of art; Computer programming; Computer programming and maintenance of computer programs; Custom design of prototypes; Design and development of computer software; Design and development of multimedia products; Electronic data storage; Platform as a service (PAAS) featuring computer software platforms for use in electronically trading, storing, sending, receiving, buying, selling, accessing, accepting and transmitting crypto-collectibles, digital collectibles, non-fungible tokens and other application tokens; Providing virtual computer systems and virtual computer environments through cloud computing; Software as a service (SAAS) services featuring software for use in electronically trading, storing, sending, receiving, buying, selling, accessing, accepting and transmitting crypto-collectibles, digital collectibles, non-fungible tokens and other application tokens; Technological research in the field of creating, minting, viewing, authenticating, buying, selling, listing, auctioning and trading non-fungible tokens (NFTs); Updating and maintenance of computer software; User authentication services using blockchain technology for cryptocurrency transactions, online software applications; Video game development services