Five of Wall Street’s biggest publicly traded Bitcoin mining companies cut their combined coin production by 47% year-over-year as they rewired their power plants to host artificial intelligence workloads under contracts worth over 50 billion USD. Yet instead of leaving the Bitcoin blockchain weaker, a wave of rival operators and private buyers stepped in to push total network computing power back above 1 zettahash per second — keeping your Bitcoin at 80,116 USD as secure as ever while reshaping how everyday investors should evaluate mining stocks.
By Michael Nguyen | October 26, 2026
The Great Power-Grid Pivot: Why Giant Miners Are Unplugging From Bitcoin
For years, publicly traded Bitcoin mining companies operated like digital gold prospectors. Their business model was simple: buy warehouses full of specialized computers, plug them into cheap electricity, and race to earn newly minted Bitcoin, which currently trades at 80,116 USD. When crypto prices rose, these companies thrived. When prices dipped or electricity bills spiked, their profit margins vanished overnight.
Now, a major split is dividing the industry. According to on-chain analytics firm CryptoQuant, five prominent publicly listed mining companies — IREN (formerly Iris Energy), Core Scientific, Bitfarms, TeraWulf, and Cipher Mining — have dramatically scaled back their cryptocurrency production to rent out their electrical capacity to Silicon Valley technology giants. Instead of guessing where crypto prices will go tomorrow, these firms are signing multi-year leases to host Artificial Intelligence (AI) and High-Performance Computing (HPC) servers.
Think of a Bitcoin miner like a landlord who owns a massive industrial warehouse with its own private power substation. Previously, that landlord filled the building with coin-minting machines that paid variable returns every day. Today, tech heavyweights like Microsoft, AMD, and cloud provider CoreWeave are knocking on the door, offering to rent the entire building on long-term contracts backed by over 50 billion USD in sector-wide AI deals, according to CryptoQuant. Because building new power grid connections can take years of regulatory approval, the electrical plugs that crypto miners already control have become some of the most valuable real estate in the technology world.
On-Chain Evidence: Inside the 47% Production Drop and the 1 Zettahash Rebound
The scale of this corporate pivot shows up clearly in blockchain production records. According to data from CryptoQuant covering January 1 through October 19, the group of five AI-focused public miners saw their combined Bitcoin output fall by 47% year-over-year, dropping from 13,263 BTC in the prior year’s period to just 7,075 BTC.
- TeraWulf’s steep pullback — According to CryptoQuant, the company reduced its direct Bitcoin production by roughly 56% year-over-year as it converted facility capacity toward high-performance computing tenants.
- Core Scientific and IREN shift megawatts — Core Scientific cut its Bitcoin output by roughly 54% following major infrastructure agreements with CoreWeave and AMD, while IREN saw production drop by roughly 51% as it prioritized AI cloud agreements, including a major deal with Microsoft.
- Bitfarms exits U.S. mining — Bitfarms shut down its United States Bitcoin mining operations entirely in June as part of its broader infrastructure transition, according to CryptoQuant.
- Pure-play miners step on the gas — Not every public company is abandoning the blockchain. A rival group of Bitcoin-focused miners — including MARA, CleanSpark, Riot, HIVE, and American Bitcoin — increased their combined output by 16% over the exact same timeframe, according to CryptoQuant.
Normally, if five of the largest mining companies in the world cut their output nearly in half, everyday crypto holders might worry that the Bitcoin network is losing its security shield. In Bitcoin’s proof-of-work system, security is measured by hashrate — the total amount of computing power actively locking in transactions and protecting the ledger from hackers.
Instead of collapsing, Bitcoin’s computing shield bounced back to near-record strength. According to industry research firm BlocksBridge Consulting in its Miner Weekly report, Bitcoin’s seven-day average hashrate climbed back above 1 zettahash per second (1 ZH/s) — equivalent to 1,000 exahashes per second (1,000 EH/s) — reaching its highest level since March 3. To put 1 zettahash per second into perspective, it means the global network of mining computers is making one sextillion (a one followed by 21 zeros) mathematical guesses every single second to keep your wallet balances tamper-proof.
The Core Conflict: Record 140.58 Trillion Difficulty Squeezes Remaining Miners
How did the Bitcoin network replace all that unplugged Wall Street computing power so quickly? Whenever large public companies decommission their crypto warehouses to install AI servers, they do not simply throw their old Bitcoin machines into a landfill. Instead, they sell those specialized computers — known as ASIC rigs — on the secondary market.
Private operators, international mining farms outside the United States, and pure-play competitors like MARA and CleanSpark have been buying up displaced hardware and plugging in brand-new, ultra-efficient machines. According to BlocksBridge Consulting, operators are increasingly relying on cutting-edge rigs like Bitmain‘s Antminer S21 XP, which delivers 270 TH/s of computing power while using just 13.5 J/TH of electricity.
For the miners who stayed behind to fight for Bitcoin rewards, this rapid replacement created a brutal side effect. The Bitcoin software automatically adjusts how hard it is to win new coins every two weeks so that blocks of transactions arrive at a steady pace. Because total computing power surged back past 1 ZH/s, the network triggered a 5.92% upward adjustment in mid-October, pushing mining difficulty to an all-time high of 140.58 trillion, according to BlocksBridge Consulting.
Analysts at BlocksBridge Consulting noted that this relentless difficulty climb leaves pure-play Bitcoin miners with almost no operational breathing room. When network difficulty hits 140.58 trillion while Bitcoin trades near 80,116 USD, a metric called hashprice — the daily revenue a miner earns for each unit of computing power they provide — gets squeezed tightly. Imagine a fishing lake where half the commercial trawlers leave to become sightseeing boats, but hundreds of smaller, faster speedboats immediately take their place. The remaining fishermen still have to work harder and burn more fuel just to catch the same number of fish.
Market Implications: What the Split Means for Your Crypto and Stock Portfolio
For regular investors, this industrial tug-of-war between artificial intelligence and Bitcoin mining carries two very different lessons depending on whether you hold cryptocurrency directly in your wallet or buy mining stocks in your brokerage account.
- Your Bitcoin wallet remains heavily fortified — If you hold Bitcoin at 80,116 USD (or ecosystem peers like Ethereum at 2,317 USD and Solana at 101 USD), you do not need to fear that Silicon Valley’s AI boom will hollow out Bitcoin’s blockchain. The rebound above 1 ZH/s and the record 140.58 trillion difficulty prove that global demand to mine Bitcoin remains fierce even when Wall Street firms pivot elsewhere.
- Reduced forced selling pressure from AI-pivoting miners — Historically, when mining difficulty rose and profit margins shrank, cash-strapped miners had to dump their freshly minted Bitcoin onto the open market just to pay their monthly electric bills. Companies earning steady lease checks from Microsoft or CoreWeave have predictable cash flows, reducing their need to panic-sell crypto during market dips.
- Mining stocks are no longer a single bet — Retail investors who buy mining shares as a leveraged bet on Bitcoin prices must check under the hood. Firms like IREN, Core Scientific, and TeraWulf are increasingly trading like AI data-center landlords, whereas MARA, CleanSpark, and Riot remain heavily tied to direct Bitcoin production after boosting their combined output by 16%.
The Verdict: What Everyday Investors Should Watch Next
The narrative that artificial intelligence would starve the Bitcoin network of electricity and computing power has officially been debunked by on-chain reality. Even with five major public companies slashing their coin production by 47% to chase over 50 billion USD in AI contracts, the global market absorbed the slack and drove network security back above the 1 zettahash per second milestone.
Moving forward, everyday investors should keep an eye on upcoming late-October difficulty adjustments and third-quarter corporate earnings reports from public infrastructure players like Cipher Mining. If you simply hold Bitcoin in self-custody, the network guarding your wealth has never been harder to attack. And if you invest in mining stocks, make sure you know whether your chosen company is still digging for digital gold — or renting out the pickaxes and power lines to Silicon Valley.
The cryptocurrency market remains highly volatile. This article is for informational purposes only and does not constitute financial advice.
terawulf down 56% on btc output and the network still climbed back above 1 zettahash. the rigs did not vanish, they just moved to private farms
yep, secondary market ASICs getting scooped up by the MARA and CleanSpark crowd. meanwhile 140.58T difficulty is squeezing everyone who stayed
and those private buyers arent sentimental either. they run the rigs only while AI power deals leave capacity on the table
‘they just moved’ is doing heavy lifting lol. someone bought those secondary market rigs and it aint the public miners anymore. hashrate back over 1 zh with 47% less wall street output tells you who is actually carrying the network now
exactly, s19s dont get shredded, they get resold to private farms running behind the peak AI load. hashrate follows cheap power whoever owns it
50 billion in AI deals makes coin minting look like a rounding error for these firms. As a holder I watch the zettahash number, not their stock price.
47% production cut and the hashrate still climbed back over 1 ZH. turns out the little guys actually matter lol
50 billion in AI contracts versus mining rewards that keep halving. honestly cant blame the boards for taking the guaranteed revenue
little guys matter until the next difficulty bump. 140.58T is already squeezing home miners running anything older than an S21
140T difficulty with a post squeeze hashrate rebound is brutal math for home miners. the efficiency cutoff keeps moving up every cycle
and the squeeze compounds. public firms idling rigs for AI deals shrink their BTC stack while private buyers chase the hosting contracts. by the time difficulty readjusts the small guys will have already unplugged for good