42 Computer services in the nature of development of digital text, image, audio, video, multimedia files authenticated by non-fungible tokens (NFTs); creation, maintenance and adaptation being updating of software, in particular software for managing smart contracts, application programming interface (API) software for allowing data access, management, upload and retrieval, and software for receiving, storing, accessing, viewing, sending, buying and selling downloadable digital text, image, audio, video, multimedia files authenticated by non-fungible tokens (NFTs); development of video games software; design and development of software for use in connection with Games-as-a-Service (GaaS); diagnostic services relating to software, in particular software for managing smart contracts; design and development of websites for others; web site hosting services; providing information, advice and consultancy services in the field of design and development of downloadable digital text, image, audio, video, multimedia files authenticated by non-fungible tokens (NFTs), development of websites, web site hosting, and development of software, in particular software for managing smart contracts, application programming interface (API) software for allowing data access, management, upload and retrieval, and video games software; graphic design, in particular graphic design of images, animated images, 3D images and avatars authenticated by non-fungible tokens (NFTs); providing information, advice and consultancy services in the field of graphic design, in particular graphic design of images, animated images, 3D images and avatars authenticated by non-fungible tokens (NFTs)