Computer programming of virtual goods for use in virtual worlds; Computer security services in the nature of providing authentication, issuance, validation and revocation of digital certificates; Computer services, namely, creating computer network-based indexes of information, websites and resources; Computer services, namely, electronic digitizing of photographic images, artwork, paintings; Computer services, namely, interactive hosting services which allow the users to publish and share their own content and images on-line; Computer services, namely, providing customized web pages featuring user-defined information; Computer services, namely, providing search engines for obtaining data on a global computer network; Creating of home pages for computer networks; Providing on-line non-downloadable computer software for use as a cryptocurrency wallet; Technological consulting in the field of cryptocurrency; Technology advisory services related to computers, engineering