Bitcoin mining difficulty rebounds 15% as US miners recover from winter outages

Cointelegraph.com NewsBitcoin’s mining difficulty climbed to 144.4 trillion after January storms briefly slashed hash rate, while some US miners offset downtime by selling electricity back to the grid. 

​Bitcoin’s mining difficulty climbed to 144.4 trillion after January storms briefly slashed hash rate, while some US miners offset downtime by selling electricity back to the grid.