42 User authentication services using software technology that automatically checks the user's control over certain accounts to authenticate user identity; authentication services of data transmitted via telecommunications, namely, user authentication services using software technology that automatically checks the user's control over certain accounts to authenticate user identity; user authentication services using technology for e- commerce transactions; Computer security service, namely, provision of computer security services for restricting unauthorized access to computer networks, computers and computerized e-commerce transactions; blockchain as a service (BaaS), namely, software as a service services featuring software for blockchain-based software development; computer-aided data backup, namely, electronic data back-up services, and recovery of computer data; computer programming services for electronic data security; computer security services in the nature of administering digital certificates; computer services in the nature of electronic data storage; certification of data using blockchain technology being a type of authentication, issuance, and validation of digital certificates; electronic data storage using blockchain technology; services in the field of data encryption, namely, data encryption services; services in the field of technology and informatics related to the protection of computer data and personal and financial information, namely, computer virus protection services; Digitization of documents; providing user authentication services using single-sign-on-technology for online software applications; electronic data storage and data back-up services; development, maintenance, and updating of software for computer systems for processing payments with virtual currency; database development services; software development, programming of computer software for others, and software implementation; computer programming; software as a service (SAAS) services, namely, hosting software for use by others for use in database management, use in managing electronic payment transactions using distributed ledger technology (DLT), and for authenticating user identity; rental of software for use in database management, use in managing electronic payment transactions using distributed ledger technology (DLT), and for authenticating user identity; hosting services, namely, providing a web hosting platform for users to develop and share software applications, database applications and distributed ledger applications; hosting of digital content on the internet; hosting of website platforms, namely, hosting the websites of others on the internet; computer services, namely, platform as a service (PAAS) featuring computer software platforms for encoding, decoding and authenticating information, messages and data, of computable legal contracts using blockchain and distributed ledgers technology (DLT); Information technology security services in the nature of recovery of computer data and computer security threat analysis for protecting data; design and development of information technology systems for others for the creation and storage of proofs of identity or credentials using decentralized protocols with blockchain and distributed ledger technologies; platform as a service featuring an on-line community for registered users to develop and share applications built on a distributed ledger software platforms or database software platforms; testing, authentication and quality control of software development for others in the field of distributed ledger technology; software as a service (SAAS) services featuring software for recording financial and non-financial data and information to a cryptographic ledger or shared cryptographic ledger, managing digital identity information and automating legal contracts; software as a service (SAAS) services, namely, hosting software for use by others for use in database management, use in managing electronic payment transactions using distributed ledger technology (DLT), and for authenticating user identity; Providing on-line non-downloadable software for developing distributed ledger software applications and database software applications, and for the encryption, decryption and authentication of information, messages and data; certification services of data transmitted via telecommunications, namely, computer security services in the nature of providing authentication, issuance, validation and revocation of digital certificates; certification services of messages transmitted via telecommunications, namely, computer security services in the nature of administering digital certificates relating to messages transmitted via telecommunications; Providing non- downloadable computer software and non-downloadable mobile applications as a service, namely, providing temporary use of non-downloadable application programming interface (API) software for users to develop and share software applications, database applications and distributed ledger applications; electronic storage of documents; electronic storage services for archiving databases, images and other electronic data; authentication services, namely, creation of automated identity verification systems, namely, designing software for electronic signature verification services using technology to authenticate user identity; Computer software platforms, non-downloadable, for hosting software for use by others for clearing the settlement of financial assets and transactions