** Shares of cryptocurrency and blockchain-related firms rise premarket, tracking a 4.7% jump in bitcoin prices
** U.S.-listed miners Riot Blockchain, Marathon Digital, Bit Digital rise between 3.5% and 4.7%
** U.S.-listed shares of Hut 8 Mining Corp HUT.O jump 5.1%
** BTC buyer and business intelligence software firm MicroStrategy Inc gains 2.9%
** Bitcoin mining machine maker Canaan Inc adds 2.6%, blockchain farm operator Bitfarms jumps 6.4%
** Crypto exchange Coinbase Global adds 2.3%
** Bitcoin prices were last at $61,095.13
** The Nasdaq crypto index, which tracks a basket of digital assets including bitcoin and ether, up 3.5%
(Reporting by Shashank Nayar in Bengaluru) ((Shashank.Nayar@thomsonreuters.com; within U.S. +1 646 223 8780; outside U.S. +91 80 6182 2256;))