** Shares of cryptocurrency and blockchain-related firms climb premarket as bitcoin BTC= regains some ground after suffering its sharpest decline since 2022 on Thurs

** President Donald Trump's selection of Kevin Warsh as his pick to become the next Fed Chair has fueled the recent rout in cryptocurrencies, while latest selling in precious metals and broad selloff in tech has soured risk sentiment

** Bitcoin, world's largest cryptocurrency, up 5.1% at $66,355.01 after falling to low of $60,008.52 earlier in the session

** At current levels, BTC has slumped about 13% this week, putting it down roughly 25% YTD. It remains at a 16-mth low and almost 50% below record high of around $126,223 hit in Oct

** Shares of crypto exchange Coinbase Global COIN.O up ~6% before the bell

** BTC hoarder Strategy MSTR.O, formerly known as MicroStrategy, up 7% premarket after 17% plunge on Thurs. Michael Saylor-led firm late Thurs reported a $12 bln loss

** Shares of retail trading platform Robinhood HOOD.O, which offers trading in crypto tokens, up ~5%

** Crypto miners Riot Platforms RIOT.O, Mara Holdings MARA.O and Bit Digital BTBT.O all up about 5% premarket, Hut 8 HUT.O up >6%

** ProShares Bitcoin Strategy ETF BITO.P and iShares Bitcoin Trust ETF IBIT.O both up around 4%