BlackRock has launched a bitcoin income fund, reportedly in the form of an exchange-traded fund (ETF), to provide investors with a way to generate cash flow from crypto. The fund, known as BITA, is listed on Nasdaq, but details about its structure and potential returns vary, with one report suggesting it involves covered calls and another citing an annualized return range of 15-25%. The launch appears to be part of a broader trend of asset managers investing in crypto.