Bitcoin surged 7.07 per centto $47,587.38 on Friday, adding $3,142.93 to its previous closeBitcoin surged 7.07 per centto $47,587.38 at 2200 GMT on Friday, adding $3,142.93 to its previous close.Bitcoin, the world's biggest and best-known cryptocurrency, is up 71.6% from the year's low of $27,734 on January4.Ether, the coin linked to the ethereum blockchain network, rose 7.86% to $3,284.18 on Friday, adding $243.55 to its previous close.