42 Data authentication via blockchain; Data storage via blockchain; Blockchain as a service [BaaS]; Certification of data via blockchain; User authentication services using blockchain technology; Computer programming of smart contracts on a blockchain; Software development, programming and implementation; Hosting services, software as a service, and rental of software; IT services; IT consultancy, advisory and information services; Providing online non-downloadable computer software for minting non-fungible tokens [NFTs]; Cloud-based data protection services; Computer security services in the nature of administering digital certificates; Internet walled garden services