Updates

** Crypto and blockchain-related stocks fall in premarket trading

** Bitcoin BTC=, the world's biggest cryptocurrency, falls 2.4%, while Ether ETH= down 3.1%

** U.S. President Donald Trump late Wednesday unleashed sweeping tariffs on dozens of rivals and allies

** Tariffs have rattled confidence and deepened concerns over global trade war, sparking a sell-off in risky assets

** Research boutique firm Fundstrat says crypto is in a tough spot until someone blinks

** "The ongoing trade war remains the dominant driver of crypto’s next move," says Sean Farrell, head of digital asset strategy at Fundstrat

** "We turn bullish if other countries concede or if economic weakness results in a fiscal or monetary response"

** Crypto exchange Coinbase COIN.O falls 4.2%, bitcoin bull Strategy MSTR.O down 3.5%

** Bitcoin miners CleanSpark CLSK.O, Riot Platforms RIOT.O, and MARA Holdings MARA.O fall 5.4%, 4.7%, and 4.5%, respectively

** iShares Bitcoin Trust IBIT.O and ProShares Bitcoin Strategy ETF BITO.P fall nearly 4%

(Reporting by Arasu Kannagi Basil in Bengaluru)

((ArasuKannagi.Basil@thomsonreuters.com;))