** Shares of crypto- and blockchain-related stocks up in premarket trading
** Bitcoin BTC=, the world's biggest cryptocurrency, rises 3%, while Ether ETH= up 2.6%
** Crypto exchange Coinbase Global COIN.O rises 4.7%, U.S.-listed shares of blockchain farm operator Bitfarms BITF.O up more than 7%
** Crypto miners Riot Platforms RIOT.O, Hut 8 Mining HUT.O and Marathon Digital MARA.O rise between 2% and 5.5%
** Bitcoin miner CleanSpark CLSK.O up 2.6%, while software firm and major crypto bull MicroStrategy MSTR.O jumps 5%
** Shares of retail trading platform Robinhood HOOD.O, which also tend to track moves in bitcoin, rose nearly 4%