(Bloomberg) BlackRock Inc. has refiled paperwork with US regulators through Nasdaq to add new details to its proposal for a exchange-traded fund that invests directly in Bitcoin. Most Read from BloombergTesla and BYD Post Record Sales on Surge in Electric-Car DemandChina Restricts Export of Chipmaking Metals in Clash with USBridgewater’s Greg Jensen Sees a ‘Bad’ Outlook for Bonds and StocksRussian General Still Missing as Defense Chief Slams MutinyIt’s Getting a Lot Harder to Chase the Stock