Bitcoin difficulty hits 148 trillion while miner revenues drop to three-month lows

Bitcoin mining difficulty has climbed to 148 trillion while mining revenues have dropped to three-month lows, squeezing miner margins. At October 30's hashprice, a 25 J/TH rig only covers power costs of about 5.45 cents/kWh after an assumed 2% pool fee. Traders watch this because sustained margin pressure can force miners to sell BTC or curtail hashrate, weighing on price and network economics.