Telecommunications; communication services for the electronic transmission of data; data exchange services (telecommunication), in particular data in databases accessible via telecommunication networks; telecommunication services for receiving and exchanging information, messages, images and data, in particular blockchains, cryptocurrency, cryptographic currency, digital currency and digital assets; data transmission services; digital transmission of data; data transmission and telecommunication services; provision of access to databases; provision of access to e-commerce platforms on the Internet; providing access to computer databases and cryptographic ledgers or shared cryptographic ledgers; providing computer connections and links on a global computer network and the Internet; transmission of database information via telecommunication networks; mobile telephone communication services; services provided by consultants, information and advisory services in the field of telecommunications and relating to the aforesaid services