March 9 (Reuters) - Bitcoin dropped 4.2% to $20,791 at 2011 GMT on Thursday, losing $913 from its previous close.
Bitcoin, the world's biggest and best-known cryptocurrency, is down 17.7% from the year's high of $25,270 on Feb. 16.
Ether, the coin linked to the ethereum blockchain network, dropped 3.2 % to $1,483.2 on Thursday, losing $49.1 from its previous close. (Reporting by Yana Gaur in Bengaluru; Editing by Maju Samuel)
