** Shares of cryptocurrency and blockchain-related firms drop in premarket trading on Mon as bitcoin BTC= hits over two-week low

** Riskier assets hit as global bond yields continue to rise with investors increasingly concerned about the inflationary impact of a prolonged U.S.-Iran conflict

** Bitcoin, world's largest cryptocurrency, drops 1.9% to around $76,801, a 17-day low; Ether ETH= drops 3.4% to $2,114, an over 1-month low

** Crypto exchange Coinbase Global COIN.O down ~3% before the bell

** BTC stockpiler Strategy MSTR.O drops 4%

** Retail trading platform Robinhood Markets HOOD.O down 2%

** Crypto miners sag: Riot Platforms RIOT.O 2%, Mara Holdings MARA.O 3%, Bit Digital BTBT.O 4%

** Ether-linked stocks decline: Bitmine Immersion Technologies BMNR.A >3%, Sharplink Gaming SBET.O about 4%

** ProShares Bitcoin Strategy ETF BITO.P and iShares Bitcoin Trust ETF IBIT.O both off 3%, while iShares Ethereum Trust ETF ETHA.O down nearly 5%

** In a milestone for digital assets last week, a crypto regulation bill advanced to full US Senate, though key issues remain in contention and negotiations between lawmakers remained fluid