(Based on Use in Commerce) Software authoring; Software design and development; Software development in the framework of software publishing; Software engineering services; Software porting; Computer software consultancy; Computer software consultation; Computer software consulting; Computer software design; Computer software development; Customizing computer software; Developing computer software; Repair of computer software; Smartphone software design(Based on Intent to Use) Authentication of data in the field of art using blockchain technology; Authentication of data in the field of multimedia using blockchain technology; Authentication of data in the field of real estate using blockchain technology; Authentication of data in the field of finance using blockchain technology; Authentication of data in the field of robotics using blockchain technology; Providing temporary use of on-line non-downloadable software for accessing, reading, and tracking information in the field of art on a blockchain; Providing temporary use of on-line non-downloadable software for accessing, reading, and tracking information in the field of multimedia on a blockchain; Providing temporary use of on-line non-downloadable software for accessing, reading, and tracking information in the field of real estate on a blockchain; Providing temporary use of on-line non-downloadable software for accessing, reading, and tracking information in the field of finance on a blockchain; Providing temporary use of on-line non-downloadable software for accessing, reading, and tracking information in the field of robotics on a blockchain; Providing user authentication services using blockchain-based software technology for cryptocurrency transactions