It was a blockbuster week for bitcoin mining news, and the clearest sign yet that miners’ AI ambitions are entering the big leagues. Cipher Mining (NASDAQ: CIFR) inked a $5.5 billion, 15-year lease with Amazon Web Services (NASDAQ: AMZN) for 300 megawatts at its Bear Lake facility, while IREN (NASDAQ: IREN) announced a$9.7 billion, five-year agreement with Microsoft (NASDAQ: MSFT) for 200 megawatts of cloud compute in Texas. Hashprice tumbled to fresh lows near $40 per petahash per day, Bitcoin retraced ...