Bitcoin’s mining difficulty is on track for another jump of roughly 5 percent at the next adjustment, according to mempool.space data — the second consecutive increase of that size, coming while the network’s total computing power hovers near its highest levels ever.
By Michael Nguyen | October 26, 2026
If you own bitcoin but have never thought about mining, here is why this matters to your money: difficulty and hashrate are the clearest real-time measure of how much real-world capital is committed to securing — and betting on — the network. When both keep climbing, it means industrial miners are still buying machines and signing power contracts even after price pullbacks. That is a conviction signal no chart pattern can fake. Here is what the data shows and what it means for you.
What the Network Data Actually Says
According to mempool.space, the network’s estimated hashrate — the total computing power dedicated to mining — stands at roughly 1.08 zettahash per second. A zettahash is a septillion guesses per second at the mathematical puzzle that secures each block. The network’s current difficulty sits at about 140.6 trillion, a measure of how hard that puzzle is.
The current difficulty epoch is roughly 70 percent complete, with just under 600 blocks to go before the next automatic adjustment. Based on block production so far this epoch, mempool.space estimates the difficulty will rise by about 5.05 percent at that adjustment. The previous adjustment, earlier in October, was also an increase — about 5.9 percent. Two back-to-back increases of this size mean blocks have been consistently arriving faster than the ten-minute target, which is exactly what happens when a wave of new computing power joins the network.
- Hashrate — around 1.08 zettahash per second, per mempool.space
- Next adjustment — estimated at roughly plus 5 percent, at height 973728
- Previous adjustment — plus about 5.9 percent earlier in October
- Epoch progress — about 70 percent complete, under 600 blocks remaining
The Backdrop: Competition Keeps Intensifying
This squeeze is happening against a backdrop of intense change in the mining industry. In recent months, many large miners have diverted part of their capacity toward artificial intelligence workloads, which can pay better than bitcoin when prices stagnate — bitcoin traded around 80,000 USD this weekend, according to CoinDesk, after slipping below that level on geopolitical jitters. Yet industry reporting, including a recent Yahoo Finance piece titled “AI Pivot Fails to Slow Bitcoin Mining Competition as Hashrate Surges,” indicates the AI diversification has not dented the arms race on the bitcoin side.
Industry consolidation is accelerating too. Recent headlines have tracked firms stacking additional mining capacity through serial acquisitions, and even experimental projects aiming to run miners powered from orbit. The direction of all of it is the same: more machines, more power, more difficulty.
Why Difficulty Rising Is a Double-Edged Sword
For miners themselves, each difficulty jump is a direct margin cut. The same machines, on the same power contracts, earn fewer bitcoin per day after the adjustment. Smaller or less efficient operators feel it first, and analysts have repeatedly warned that squeezed margins push high-cost miners toward selling reserves or shutting down — which can add selling pressure to the market in the short run.
For everyone who simply holds bitcoin, the picture is different. Higher difficulty with a rising hashrate means the network is objectively more expensive to attack and more heavily capitalized than ever. Think of it as a bank vault: every increase in difficulty is another layer of steel on the door, paid for by someone else’s capital expenditure. The security of your holding improves even though you paid nothing for it.
What This Means for Your Portfolio
Practically, three things follow from a 5 percent difficulty bump. First, miner revenues per unit of power fall, which tends to pressure publicly traded mining stocks harder than bitcoin itself. Second, the market’s “capitulation” fears — the “is bitcoin dead” chatter that spikes whenever price stagnates — look weak against hashrate near all-time territory; big capital does not build at this scale for an asset it expects to die. Third, if price keeps sliding while difficulty climbs, expect the next few months to favor the largest, lowest-cost operators, and expect further consolidation headlines.
The Verdict
Bitcoin mining is entering a stretch where only the lean survive, and the network comes out stronger for it. A second straight difficulty increase of about 5 percent, with hashrate near record levels, is the blockchain’s immune system working as designed — absorbing new computing power and tightening the screws. For holders, it is quiet reassurance. For miners, it is a margin squeeze that will decide who is still standing in 2027.
The cryptocurrency market remains highly volatile. This article is for informational purposes only and does not constitute financial advice.
Second straight 5 percent adjustment while fees sit under 2 percent of miner revenue. This is hash power arriving on contracts signed when btc was above 90k. Watch the marginal fleets when those contracts renew at current prices
difficulty up again and hashrate still climbing. every bear cycle people say mining is dead and every time the machines just multiply lol
1.08 zettahash per second and difficulty near 140.6 trillion. every pullback the last two years someone calls the top of miner capex and every time the opposite happens
second straight ~5 percent bump, height 973728. the ai pivot stories were cope, machines keep coming online regardless
The margin squeeze point is real. Anyone mining on older rigs with power contracts above ~6 cents is going to feel this adjustment hard. Consolidation into the big pools will accelerate.
@Bjorn exactly, and thats before you price in the halving era reward. thin margins + rising difficulty = only the most efficient fleets survive to 2027
The 6 cent power threshold is the real dividing line. Above it you are mining at a loss and basically holding the sites as an option for the AI pivot.
Hashrate near ATH after price pulled back is the cleanest conviction signal there is. Somebody signed power contracts months ago and they are not tearing them up over a red month.
exactly. difficulty eats small miners first, the consolidation headline matters more than the adjustment number imo
The bit Boersma orbit angle is wild. If space based mining ever pencils out the difficulty problem gets a whole new chapter
space mining breaks the moment you price launch at a few thousand per kilo. maybe orbital solar works in twenty years, but every watt you beam down still competes with a desert farm at 2 cents
holders read this as reassurance, miners read it as a pay cut. both are right tbh
1.08 zettahash and another difficulty bump in the same week, pay cut is putting it nicely. marginal rigs are basically space heaters with a subscription fee now
shut my s19 fleet down last month, power contract reset to 7.4 cents and the math just died. running old iron into a second straight difficulty bump is donating electricity to the pool
This is the network absorbing new hash power exactly as designed. Nobody congratulates the difficulty algorithm but it is the quietest piece of monetary engineering we have.