Everything you wanted to know about bitcoin but were afraid to ask | Technology | The Guardianhttps://www.theguardian.com/technology/2017/nov/11/everything-you-ever-wanted-to-know-about-bitcoin-but-were-to-afraid-to-ask-cryptocurrencies?utm_source=esp&utm_medium=Email&utm_campaign=GU+Today+main+NEW+H+categories&utm_term=251943&subid=19723158&CMP=EMCNEWEML6619I2The value of cryptocurrencies is rising fast. But is it sustainable? And how does it work, anyway? These questions, and many more, answered…