Providing access to blockchain networks; Providing telecommunications connections to blockchain networks; Communication services, namely, electronic transmission of data by means of cross-chain technology; Electronic transmission of data in the field of digital and blockchain assets by means of cross-chain technology; 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