Cryptocurrency prices sank Friday as investors grappled with a new threat to the global banking system as well as continuing concerns about U.S. monetary policy. Bitcoin (BTC), the largest cryptocurrency by market capitalization, was recently changing hands at about $27,450, down more than 2% over the past 24 hours, according to CoinDesk data. BTC rose as high as about $28,300 earlier in the day and is up more than 16% in March. But most risk-on markets were reeling for much of the day after ...