42 Providing on-line non-downloadable computer software for managing cryptocurrency transactions, managing smart contracts and managing crypto asset transactions using blockchain technology; Blockchain as a Service BaaS, namely, user authentication services using blockchain technology for cryptocurrency transactions, online software applications and for administering bets and gambling; Certification of data via blockchain, namely, authentication of data in the field of on-line gaming, financial transactions related to online gaming, gambling and betting using blockchain technology; Data authentication via blockchain, namely, authentication of data in the field of on-line gaming, financial transactions related to online gaming, gambling and betting using blockchain technology; electronic Data storage using blockchain technology; Authentication services for computer security, namely authentication of digital certificates; Authentication services in the field of messages transmitted via telecommunications, namely email authentication services; User authentication services using technology for e-commerce transactions; Providing temporary use of on-line non-downloadable software for processing electronic payments; Providing temporary use of on-line, non-downloadable e-commerce software to allow users to perform electronic commercial transactions via a global computer network; Providing temporary use of on-line non-downloadable software for buying, selling, managing, paying, downloading, registering and administering goods authenticated by nonfungible tokens (NFTs); Providing temporary use of on-line non-downloadable computer software for managing and placing bets; Providing temporary use of on-line non-downloadable computer gaming software for gambling; Providing temporary use of on-line non-downloadable authentication software for authenticating user identification, document authentication and payment authentication; Providing temporary use of on-line non-downloadable software for transmission of on-line messaging; all of the aforesaid relating to gaming, betting and gambling sectors; none of the aforesaid for software design or development