42 Software development, design of computer hardware and software, software creation; Computer programming; Software as a service (SaaS); Platform as a service (PaaS); Providing temporary use of non-downloadable computer software; Technical support relating to computer software and applications; Computer and information technology consultancy services; Design and development of computer software and software packages; Updating of computer software and computer software packages; Consultancy relating to computer security and the installation of computer security systems; Computer expertise; Technical consultancy and assistance in the field of computing; Rental of computer software, maintenance of computer software; Engineering in the field of computing; Information technology solution design services; Design of information technology systems; IT security and protection; Electronic content migration and integration services; data migration services; Blockchain as a service (BaaS); data authentication and certification via blockchain; data mining; retrieving of historical and real-time data from blockchains and customization of that data to the specific needs of the customer; database development services; development of data programs; design and development of software for blockchain data storing and recalling; Computer programming services for electronic data security; providing software services for obtaining data, including blockchain data via computer and communication networks; providing software for storing and securing blockchain data; none of the foregoing for buying or selling online media space or advertising, or for co-location or disastery recovery services