Bitcoin rose 5.7 per cent to $37,802 at 2129 GMT on Wednesday, adding $2,044 to its previous close. Bitcoin, the world’s biggest and best-known cryptocurrency, is up 42.5 per cent from the year’s low of $26,533 on Oct. 11. Ether, the coin linked to the ethereum blockchain network, rose 7.94 per cent to $2,087.9 on Wednesday, adding $153.6 to its previous close.