42 Platform as a service (PaaS) and software as a service (SaaS) featuring non-downloadable software for enabling users to electronically access, create, store, buy, sell, receive, send, trade, and process transactions for goods and services, digital tokens, digital arts, crypto-collectibles, digital files, in the fields of art, domain names, music, photography, sports, trading cards, virtual world, gaming, membership, picture for proof authenticated by non-fungible tokens (NFTs), application tokens, and digital currencies; for enabling users to exchange digital tokens for goods and services; for providing access to digital marketplaces, virtual environments and auctions; for managing and validating data, information and transactions using blockchain-based smart contracts; for providing information, communications, and authentications for goods and services, digital tokens, digital arts, crypto-collectibles, digital files, in the fields of art, domain names, music, photography, sports, trading cards, virtual world, gaming, membership, picture for proof authenticated by non-fungible tokens (NFTs), application tokens, and digital currencies.