Bitcoin dropped 4.94% to $36,007 at 2117 GMT on Thursday, losing $1,870 from its previous close.
Bitcoin, the world's biggest and best-known cryptocurrency, is down 5.2% from the year's high of $37,978 on November 9.
Ether, the coin linked to the ethereum blockchain network, dropped 4.86 % to $1,959.8 on Thursday, losing $100.2 from its previous close.
(Reporting by Jose Joseph in Bengaluru; editing by Jonathan Oatis)