Computer security consultancy; Computer software consultancy; Computer technology consultancy; Design and development of software in the field of mobile applications; Providing a secure, web-based service featuring technology that enables individuals to remotely create and manage their own accounts so that whatever private content they upload now can be encrypted, then delivered to their intended recipients, at the time and in the manner requested; Providing on-line non-downloadable computer software for use as a cryptocurrency wallet; Providing technology information in the field of cryptocurrency; Providing temporary use of non-downloadable web-based decentralized applications (DApps) for cryptocurrency trading; Providing temporary use of on-line non-downloadable computer software for use as an electronic wallet; Providing user authentication services using blockchain-based software technology for cryptocurrency transactions; Technological consulting in the field of cryptocurrency