Bitcoin mining activity has suffered its sharpest setback in more than four years after severe winter storms across the United States forced large operators to scale back production, dragging down network hashrate, output and revenues. Key Takeaways: US winter storms forced miners offline, driving a 12% drop in Bitcoin’s network hashrate. Mining revenues and output fell sharply as power disruptions hit major operators. The slowdown marks the steepest production decline since the post-halving period i ...