Public keys is a weekly roundup from Decrypt that tracks the key publicly traded crypto companies. This week BlackRock mints a new most-profitable ETF, S&P Global gets in the mix, and Coinbase stakes its claim on New York. Bitcoin Rules at BlackRock BlackRock’s iShares Bitcoin Trust has become the $12 trillion asset manager’s most profitable ETF by annualized fee revenue. As of Thursday’s close, the fund had$97 billion worth of assets under management, according to iShares. That means the 21-month-old ...