** Cryptocurrency and blockchain-related firms gain premarket
** Bitcoin BTC=, world's biggest cryptocurrency, rises 3.85% to $117,961.45; Ether ETH= gains 6.1% to $2,992.58
** Crypto exchange Coinbase Global COIN.O up 2.3%, BTC stockpiler Strategy MSTR.O, formerly known as MicroStrategy, up 3.27%
** Crypto miners advance premarket: Riot Platforms RIOT.O up 3.26% and Mara Holdings MARA.O up 3.58%; Cleanspark CLSK.O rises 3.64%, Bit Digital BTBT.O gains 5.19%
** ProShares Bitcoin Strategy ETF BITO.P and iShares Bitcoin Trust ETF IBIT.O add ~4% each
** YTD, BTC gains 25.95%
(Reporting by Rashika Singh in Bengaluru)
((Rashika.Singh@thomsonreuters.com;))