Non-downloadable software for data management, data analytics and system integration; design of on-line databases and directories; computer programming; design, installation, updating and maintaining computer software; leasing of computer software; hosting services, software as a service, and rental of software; software as a service featuring software for machine learning; cloud computing services; blockchain as a Service; user authentication services using blockchain technology; data mining; cloud hosting provider services; all of the aforesaid in the field of data management, data analytics and system integration; encryption, decryption and authentication of information, messages and data; data authentication via blockchain; data storage via blockchain; consultancy, information and advisory services relating to the aforesaid services including the services provided by a helpline