42 Scientific research and analysis; scientific and technological services, research works and related design services; computer-aided scientific research, tests and analyses; design, development and programming of computer software; designing, developing and programming open source software; consultancy and information services on the design, programming and maintenance of computer software; consultancy with respect to designing and developing software architecture and computer hardware; consultancy in programming and developing e-commerce portals (e-business); user authentication via blockchain technology; blockchain as a service [BaaS]; Software as a Service (SaaS); computer Platform as a Service (PaaS); providing virtual computer systems via cloud computing; hosting platforms on the Internet; hosting of computerized data, files, applications and information; services in the field of data encryption; data encryption and decryption; designing and developing decentralized applications; software as a service for managing and controlling decentralized autonomous organizations (DAOs); software as a service for recording, managing and tracking ownership of decentralized autonomous organizations (DAOs); designing and implementing smart contracts; cryptocurrency mining; providing temporary use of non-downloadable software applications accessible via a website; providing temporary use of non-downloadable software applications for accessing as well as using a cloud computing network; providing non-downloadable software for creating non-fungible tokens (NFTs); providing non-downloadable blockchain software; providing a non-downloadable distributed ledger software; hosting of on-line facilities for conducting interactive discussions