Bitcoin reversed an earlier gain of as much as 10% after BlackRock said that its application for an exchange-traded fund that invests directly in the cryptocurrency is still under review.“The iShares Spot Bitcoin ETF application is still under review by the SEC,” a spokesperson said. Bitcoin was up about 3% to $28,000 as of 10:12am in New York on Monday after briefly jumping to $30,000. Speculation swirled on social media that BlackRock, which in June submitted an application for a spot-Bitcoin ETF, received a green-light from the US...