Forbes also reports that Fidelity’s new company is not the first of its public efforts at integrating blockchain and cryptocurrency into its portfolio of services, although it is likely the most prominent. Login Newsletters. Cryptocurrencies have been on regulators’ radar for some time. Please Click Here to go to Viewpoints signup page. Related Terms Genesis Block Definition Genesis Block is the name of the first block of Bitcoin ever mined, which forms the foundation of the entire Bitcoin trading system.