Bitcoin (BTC) Mining Difficulty Jumps 5.92% to 140.58T, Highest Since March

140.58T, the Highest Setting Since March

The Bitcoin (BTC) network has raised its mining difficulty by 5.92%, the steepest single recalibration in months and the highest setting since March 5. The change took effect at block height 971,712, lifting the difficulty target from 132.72 trillion to 140.58 trillion, a level last recorded roughly seven months ago. On-chain data published on mempool.space confirms both figures. The move is the 10th upward adjustment among the 21 difficulty changes recorded so far this year and the third-largest increase of 2026, extending a recovery in Bitcoin network participation that has been building since the summer.

Difficulty measures how much computation a miner must expend to win a block under the network's proof of work rules. The protocol recalibrates the target every 2,016 blocks so that, whatever the total hashrate, blocks keep arriving at an average interval near ten minutes. When hashpower joins faster than the schedule, the epoch ends early and difficulty is adjusted upward; when capacity leaves, the interval stretches and the next target comes down. The current jump therefore tells us hashpower has been arriving consistently for most of the previous epoch, not just in a single burst.

The hike landed during a stretch in which the Bitcoin price recovered, and that revenue improvement is what pulled capacity back onto the network. Higher expected earnings per unit of computation have returned previously marginal machines to profitability, and operators have brought idled rigs back online in response. Our read of the sequence is that the 5.92% step is a lagging confirmation of that inflow rather than a fresh signal: by the time difficulty registers a move of this size, the hashpower behind it has typically already been running for days.

Hashprice, the crypto mining sector's standard gauge of expected daily revenue per petahash (PH/s) of hashpower, stood at $37.56 on September 16 and climbed above $41 twice in the following thirty days, including a print on October 2. For most of that month, daily mining revenue ran 6% to 9% above the September 16 baseline. The gauge is the number operators watch when deciding whether to power on or throttle down hardware, and its trajectory explains the capacity swing behind this week's adjustment. As of Friday, October 16, hashprice has fallen back to $36.75, a reminder that the revenue window which drew machines back in is already narrowing.

The capacity is visible in the hashrate itself. Total network hashrate has moved back above 1,000 EH/s, crossing the 1 ZH/s threshold, and stood at 1,024.96 EH/s at the time of writing. The average block is currently produced in roughly 8 minutes and 45 seconds, faster than the ten-minute target, and that persistent overspeed is exactly what forces the upward recalibration recorded above. That gap between actual and target block intervals is the raw input the protocol reads when it sets the next difficulty.

These economics sit inside a supply schedule fixed by the Bitcoin (BTC) halving, which cuts the block subsidy roughly every four years and leaves miners increasingly dependent on transaction fees and on the market price for their margins. Running more than 1 ZH/s on a reduced subsidy means the sector's fixed costs are carried by thinner per-unit revenue than in earlier cycles, so any further inflow now leans heavily on whether hashprice can recover toward the $41 prints of early October rather than settle at the current $36.75.

Next Adjustment Due Around Oct 28

The next difficulty epoch points to another double-digit move. Early estimates put the adjustment due around October 28 at +14.24%, but the figure is fragile: only a few dozen of the epoch's 2,016 blocks have been mined so far, so the estimate will shift materially with the hashrate over the coming fortnight. Our reading is that the odds favor a further hike, since capacity that has already been installed and powered on rarely leaves quickly. The binding constraint is revenue: with hashprice at $36.75, below the month's highs, marginal operators have less headroom to keep older machines running, and any renewed weakness in the coin's market price would cool the inflow. Whether transaction fees can supplement those margins is the open variable the subsidy schedule does not answer. For positioning context, our Bitcoin technical analysis tracks the levels that decide whether this inflow continues, with the $88,000 supply wall the recovery test we flagged earlier this month.