Computer software development; Software development in the framework of software publishing; Smartphone software design; Software porting; Providing online non-downloadable computer networking software; Software as a service (SAAS) services featuring software for collecting, verifying, and transmitting data and information for use in blockchain-based smart contracts; Software as a service (SAAS) services in the nature of hosting cloud-based software of others; Advisory services relating to computer software; Providing temporary use of non-downloadable web-based decentralized applications (DApps) for Accounting; Preparation, update, installation and maintenance of computer software; Installation, maintenance and repair of software for computer systems; Providing temporary use of on-line non-downloadable software for medical billing; Providing temporary use of on-line non-downloadable software for retirement planning; Providing on-line non-downloadable software for computing energy savings; Computer software design, computer programming, and maintenance of computer software; Design for others in the field of computer software; Providing temporary use of online non-downloadable computer chatbot software for simulating conversations; Application service provider featuring application programming interface (API) software; Computer software consultancy; Computer software consultation; Computer software consulting; Providing user authentication services using single sign-on technology for online software applications; Consultation about the maintenance and updating of computer software; Providing user authentication services using biometric hardware and software technology for e-commerce transactions; Providing user authentication services using blockchain-based software technology for cryptocurrency transactions; Providing temporary use of on-line non-downloadable computer software for use as an electronic wallet; Installation of computer software; Providing on-line non-downloadable software for generating cryptographic keys for receiving and spending cryptocurrency; Providing temporary use of non-downloadable computer software for shipment processing over computer networks, intranets and the internet; Providing temporary use of non-downloadable computer software for tracking freight over computer networks, intranets and the internet; Design of online social networking software; Updating and design of computer software; Installation and maintenance of Internet access software; Installation, maintenance, and updating of computer software; Troubleshooting of computer software problems; Consulting services in the field of software as a service (SAAS); Software development and product development in the field of Accounting; Computer software design; Business technology software consultation services; Developing computer software; Software design and development; Design and development of computer software; Software as a service (SAAS) services featuring software for Accounting