19:50More or LessWill Bitcoin use more electricity than the United States?BBC World Service Duration: 9 minutes Sun 24th Dec 2017, 19:50 on BBC World Service East and Southern AfricaAvailable for over a yearListen nowMeasuring the energy used to keep the crypotcurrency secure. Show more GenresFactualFormatsMagazines & ReviewsBrandMore or Less Source: BBC Online