Bitcoin Miners Are Selling BTC to Become AI Companies

It costs $79,995 to mine one bitcoin right now. Bitcoin is selling for $70,000. Every coin a public miner digs up loses them roughly $19,000. And yet, the lights are still on — because these companies are quietly becoming something else entirely.

The Math That Broke an Industry

The bitcoin mining sector entered 2026 in a bind of its own making. CoinShares' Q1 2026 mining report, published this week, lays out the numbers with uncomfortable precision: the weighted average cash cost to produce one bitcoin among publicly listed miners hit $79,995 in Q4 2025. With bitcoin trading in the $68,000–$70,000 range, the industry is structurally underwater.

The culprit is a familiar one. The April 2024 halving sliced block rewards in half overnight. Mining difficulty kept climbing. Electricity costs didn't budge. Hash price — the revenue miners earn per unit of computing power — hit an all-time post-halving low of $28–$30 per petahash per day in early March 2026. At those levels, only miners with electricity costs below $0.05 per kilowatt-hour can stay cash-profitable. For most, that threshold is out of reach.

The industry's response has been swift, large-scale, and arguably irreversible.

$70 Billion Worth of Reinvention

Public miners have collectively signed over $70 billion in AI and high-performance computing (HPC) contracts. The individual deals are staggering in scope.

CoreWeave's expanded agreement with Core Scientific is worth $10.2 billion over 12 years. TeraWulf has locked in $12.8 billion in contracted HPC revenue. Hut 8 signed a $7 billion, 15-year AI infrastructure lease at its River Bend campus. Cipher Digital inked a multi-billion-dollar deal with Google-backed Fluidstack.

The revenue mix is already shifting. Core Scientific's AI colocation revenue now accounts for 39% of its total. TeraWulf is at 27%. IREN is at 9% and scaling fast, with up to 200 megawatts of liquid-cooled GPU capacity under construction. Analysts estimate that public miners could derive as much as 70% of their revenue from AI by end of 2026, up from roughly 30% today.

The economic logic is hard to argue with. Bitcoin mining infrastructure costs roughly $700,000–$1 million per megawatt. AI infrastructure runs $8–$15 million per megawatt — ten to fifteen times higher upfront. But AI contracts deliver margins above 85% with multi-year visibility. Bitcoin's hash price offers none of that stability.

How They're Paying for It

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This pivot doesn't come cheap, and the financing methods reveal just how committed — or desperate — the sector has become.

Debt is piling up at infrastructure scale. IREN now carries $3.7 billion in convertible notes. TeraWulf holds $5.7 billion in total debt. Cipher Digital issued $1.7 billion in senior secured notes last November; its quarterly interest expense jumped from $3.2 million across the first nine months of the year to $33.4 million in Q4 alone. These aren't the balance sheets of bitcoin miners. They're the balance sheets of infrastructure companies betting that AI revenue arrives before the debt matures.

The second funding source is more symbolically loaded: selling bitcoin. Public miners have collectively reduced their BTC treasuries by over 15,000 BTC from peak levels. Core Scientific sold roughly 1,900 BTC ($175 million) in January and plans to liquidate substantially all remaining holdings in Q1 2026. Bitdeer zeroed out its treasury in February. Riot Platforms sold 1,818 BTC ($162 million) in December. Even Marathon — the largest public holder at 53,822 BTC — quietly amended its March 10-K to authorize sales from its entire balance sheet reserve, partly because its bitcoin-backed credit facility saw its loan-to-value ratio climb to 87% as prices fell toward $68,000.

The companies selling bitcoin to fund AI are the same companies whose mining operations secure the bitcoin network. That's not a minor irony. It's a structural tension.

What's at Stake for Bitcoin Itself

Bitcoin's security model depends on miners. More hashrate means a more expensive and difficult network to attack. When mining is unprofitable and AI is lucrative, rational actors shift capital away from mining. If enough of them do, the network's security budget shrinks.

This is already happening. The network peaked at approximately 1,160 exahashes per second (EH/s) in early October 2025 and has since dropped to roughly 920 EH/s. Three consecutive negative difficulty adjustments have followed — the first such streak since July 2022.

Equity markets have priced the divergence cleanly. Miners with secured HPC contracts now trade at 12.3x next-twelve-month sales. Pure-play miners trade at 5.9x. The market is paying more than double for AI exposure, which only reinforces the incentive to pivot further and faster.

Geography is shifting too. The U.S., China, and Russia now control roughly 68% of global hashrate, with the U.S. gaining about 2 percentage points of market share in Q4 alone. Meanwhile, Paraguay and Ethiopia have entered the global top 10 mining countries — driven by HIVE's 300-megawatt operation in Paraguay and Bitdeer's 40-megawatt facility in Ethiopia.

One Number Controls Everything

CoinShares forecasts the network hashrate will reach 1.8 zetahashes by end of 2026 and 2 zetahashes by March 2027. But those projections carry a single critical assumption: bitcoin recovers to $100,000 by year-end.

If bitcoin stays below $80,000, hash price keeps falling and more miners exit. Below $70,000 for a sustained period, larger capitulation begins — which, paradoxically, benefits the survivors through lower difficulty. Next-generation hardware like Bitmain's S23 series and Bitdeer's proprietary SEALMINER A3, both running below 10 joules per terahash, could halve energy costs per coin when deployed at scale in H1 2026. But the capital needed to deploy them is increasingly being redirected toward AI instead.

For investors, the bifurcation is already priced in. For bitcoin holders, the question is whether a mining industry that's half-exited is still capable of securing the network at the level the asset's valuation implies.