Authentication, issuance and validation of digital certificates; Computer programming services, namely, content creation for virtual worlds and three dimensional platforms; Computer services, namely, creating an on-line community for registered users to participate in discussions, get feedback from their peers, form virtual communities, and engage in social networking services in the field of cryptocurrency.; Computer services, namely, providing an interactive web site featuring technology that allows users to consolidate and manage social networks, accounts, and connections to existing and emerging application programming interfaces (APIs); Design and development of computer hardware and software; Providing a website featuring non-downloadable software using artificial intelligence for machine learning; Providing on-line non-downloadable computer software for use as a cryptocurrency wallet; Providing on-line non-downloadable software for generating cryptographic keys for receiving and spending cryptocurrency; Providing temporary use of non-downloadable web-based decentralized applications (DApps) for cryptocurrency trading.; Providing temporary use of online non-downloadable computer chatbot software for simulating conversations; Providing user authentication services using blockchain-based software technology for cryptocurrency transactions; Research in the field of artificial intelligence; Smartphone software design; Software as a service (SAAS) services featuring software using artificial intelligence for machine learning; Software as a service (SAAS) services, namely, hosting software for use by others for use in database management