Central banks’ answer to cryptocurrencies

Even by their volatile standards, this week has been a roller-coaster for cryptocurrencies. On Thursday, Bitcoin’s value dropped 10% to below $50,000, while both Ethereum and Dogecoin also slumped. Dogecoin – a cryptocurrency which started as an internet joke in 2013 – had already suffered a 25% drop at the weekend, after a whirlwind year…