Watch Mining Hearing Live: Bitcoin Is More Energy-Efficient than Banks, Bitfury CEO Tells US Lawmakers

Traditional banking requires 2.5 times the amount of power as Bitcoin (BTC) to produce the same amount of value, and only proof-of-work (PoW) provides "a truly trustless system," according to Brian Brooks, CEO of major blockchain technology firm Bitfury and a former Comptroller of the Currency in the US....