42 Blockchain as a service [BaaS]; computer programming of smart contracts on a blockchain; design, development and programming of computer software; development and maintenance of computer database software; hosting blockchain-based computer game software for others; hosting blockchain-based software platforms for the online provision of blockchain-based computer game software; hosting computer software applications for others; installation, maintenance and updating of database software; platform as a service [PaaS]; providing non-downloadable computer software development tools for the development of blockchain-based software applications, namely, decentralised software applications; providing non-downloadable computer software for use in communications between computers; providing online non-downloadable computer software for minting cryptocurrency tokens or non-fungible tokens [NFTs]; research and development of computer software; software development services