JPMorgan reports that U.S.-listed bitcoin miners now control a record 28.9% of the global network hashrate, reflecting a 70% increase in their combined power year-to-date. This growth, compared to a 33% rise in the overall network hashrate, highlights their efficiency and financing advantages. Mining profitability (hashprice) has increased slightly since September, and the miners' market cap is up 7%, presenting a potential investment opportunity. Source: Coindesk
