Bitcoin mining difficulty has increased by 5% to a new record high of 150.84 trillion, marking the seventh consecutive adjustment. The network's hashrate has surpassed 1.05 zettahashes per second (ZH/s). This rise in difficulty, coupled with low transaction fees, has caused the Hashprice, a key miner revenue metric, to fall below $50 per petahash per second (PH/s), down from $52 when Bitcoin reached $118,000 this summer. Despite the narrowing profit margins, some mining company stocks have risen alongside Bitcoin's recent price increase.