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WEBTHREEPEDIA RESEARCH

[DEEP DIVE] Bitcoin Miners Sign $70B in AI Leases, Exit Mining

Zephyra|July 21, 2026|BPF
EXECUTIVE SUMMARY

Bitcoin miners are abandoning their core business. Publicly listed mining companies have collectively signed more than $70 billion in AI and high-performance computing (HPC) infrastructure contracts in 2026, while hashprice — the standard metric for mining revenue per unit of computation — has co...

"We poured the cashed-out funds, along with $300 million in new capital, entirely into AI." — Bitdeer, Q1 2026 Treasury Report

Executive Summary

Bitcoin miners are abandoning their core business. Publicly listed mining companies have collectively signed more than $70 billion in AI and high-performance computing (HPC) infrastructure contracts in 2026, while hashprice — the standard metric for mining revenue per unit of computation — has collapsed to a five-year low of $29 per PH/s/day. The average publicly traded miner now loses approximately $19,000 on every bitcoin produced, according to CoinShares' Q1 2026 mining report.

The pivot is not gradual. Hut 8 signed a $9.8 billion, 15-year AI data center lease on July 20, bringing its Beacon Point campus contract value to $19.6 billion. IREN closed a $3 billion convertible notes offering in May to fund AI infrastructure. Cipher Mining locked in a $5.5 billion, 15-year lease with Amazon Web Services. Core Scientific liquidated substantially all of its bitcoin treasury — roughly 1,900 BTC worth $175 million — in January to fund its data center transition. At the Bitcoin 2026 conference in Las Vegas in April, mining exhibitors declined 30% year-over-year.

The industry that once defined itself by producing bitcoin is now defined by the electricity and real estate it controls. The economic logic is stark: AI data centers generate roughly $25 per kilowatt-hour in revenue; bitcoin mining generates about $1.

Table of Contents

  1. The Five-Fold Crunch
  2. Hashrate Decline and Difficulty Adjustments
  3. The AI Contract Surge
  4. Treasury Liquidations
  5. Revenue Economics: Mining vs. Colocation
  6. Capital Raises and Balance Sheet Restructuring
  7. Network Security Implications
  8. Key Takeaways
  9. Conclusion
  10. Sources & References

The Five-Fold Crunch

KuCoin Research identified five simultaneous pressures converging on the mining industry in 2026, a combination that distinguishes this cycle from prior downturns:

  1. Post-halving revenue compression. The April 2024 halving cut block rewards from 6.25 BTC to 3.125 BTC. At current prices near $66,300 (as of July 21, 2026), each block yields approximately $207,000 — half of what miners earned at the same price pre-halving.

  2. Hashprice at five-year lows. CoinShares reports hashprice fell to $29/PH/s/day in Q1 2026, down from $35–37 in November 2025 and a brief year-end rebound to $38–40. The metric has not been this low since the COVID-era crash in 2020.

  3. Elevated electricity costs. Geopolitical disruptions, including elevated oil prices, have pushed average hosting costs above breakeven for a significant share of the fleet. At $0.07/kWh, only sub-15 J/TH hardware maintains positive margins.

  4. Rising cooling costs. Global temperature increases are forcing operators to spend more on thermal management, a cost category that did not feature prominently in prior cycles.

  5. Record network difficulty. Despite the hashrate retreat from peaks, difficulty reached 133.87 trillion before a 5% downward adjustment on July 11, 2026, settling at 127.17 trillion.

The CoinShares Q1 2026 report estimates that the average cash cost per bitcoin for publicly traded miners rose to approximately $79,995 in Q1 2026. With bitcoin trading near $66,300, the average listed miner operates at a loss of roughly $13,700 per coin at current prices — a figure that reached $19,000 per coin earlier in the quarter when prices were lower around $69,200 as reported by CoinDesk in March.

Approximately 15–20% of older mining rigs are now operating at a loss, according to CoinShares. These are predominantly machines rated above 17.5 J/TH that were competitive before the halving.

Hashrate Decline and Difficulty Adjustments

The network hashrate tells a story of capitulation. As of July 13, 2026, the seven-day average hashrate stood at 908 EH/s, according to Hashrate Index. That figure represents:

  • A 14.8% decline from the January 1, 2026 level of approximately 1,065 EH/s
  • A 21.3% decline from the one-year peak of 1,154 EH/s reached in October 2025

Difficulty has adjusted downward multiple times in 2026. The July 11 adjustment brought difficulty to 127.17 trillion, a 5% cut. An earlier adjustment in June saw a 9.91% drop. The next adjustment, estimated for July 25, is expected to increase by approximately 2.74%, suggesting some hashrate stabilization at current price levels.

The hashrate decline does not mean the network is insecure. At 908 EH/s, Bitcoin's computational security remains orders of magnitude beyond any practical attack vector. But the retreat indicates that a meaningful share of industrial mining capacity is being shut down or redirected to other purposes.

The AI Contract Surge

The dollar figures attached to recent AI infrastructure deals dwarf anything in bitcoin mining history:

| Company | Deal Partner | Capacity | Contract Value | Term | |---------|-------------|----------|---------------|------| | Hut 8 | Undisclosed (investment-grade) | 704 MW (total campus: 1 GW) | $19.6B (campus total) | 15 years | | Cipher Mining | Amazon Web Services | 300 MW | $5.5B | 15 years | | IREN | Microsoft | Not disclosed | $1.94B annualized | 5 years | | Core Scientific | Multiple | Colocation expansion | 9x YoY revenue growth | Ongoing |

Hut 8's July 20 announcement is the most recent and largest single transaction. The company signed a second 352 MW lease at its Beacon Point campus in Texas with an existing investment-grade tenant, bringing total campus capacity to 1 GW and base-term contract value to $19.6 billion. The lease includes a 3.0% annual rent escalator. With renewal options, total potential contract value reaches $50.2 billion. Hut 8 shares rose 17% on the announcement.

IREN's Microsoft partnership, structured as a five-year deal, is projected to generate $1.94 billion in annualized revenue at an 85% project-level EBITDA margin. IREN reported Q3 FY2026 revenue of $144.8 million against analyst expectations of $219.3 million, with a net loss of $247.8 million — indicating that the AI revenue ramp has not yet offset transition costs.

Cipher Mining's AWS deal covers 300 MW of capacity to be delivered in two phases beginning July 2026, with rent commencing in August. The deployment supports Cipher's 1 GW Colchis joint venture in West Texas, where Cipher holds approximately 95% equity.

Core Scientific, which emerged from bankruptcy in 2024, posted 45% revenue growth in Q1 FY2026, with colocation revenue surging 9x year-over-year. The company is raising $3.3 billion through a junk-bond offering to accelerate its AI transition.

Collectively, listed Bitcoin miners have announced over $70 billion in AI and HPC contracts, according to multiple industry sources. At the Bitcoin 2026 conference in Las Vegas (April 27–29), mining exhibitors fell 30% from the prior year. Companies including CleanSpark and Bitdeer were among those visibly shifting their booth presence and messaging toward AI and HPC.

Treasury Liquidations

The pivot is funded, in part, by selling bitcoin. This represents a structural break from the "HODL" strategy that defined miner treasury management from 2020 to 2024.

Core Scientific held 2,537 BTC (worth $222 million) at year-end 2025. By January 2026, the company had sold approximately 1,900 BTC for $175 million and stated it expected to monetize "substantially all" remaining holdings in Q1. The proceeds fund AI data center construction.

Bitdeer cleared its entire treasury of 943.1 BTC in February 2026, achieving what it described as "zero holdings." The proceeds, combined with $300 million in new capital, were directed entirely to AI infrastructure.

Riot Platforms reported Q1 2026 bitcoin mining revenue of $111.9 million, down from $142.9 million in the same period of 2025. The company's data center revenue reached $33.2 million. Riot, along with MARA (Marathon Digital), has been building out data center capacity alongside mining operations.

Publicly listed miners have collectively reduced BTC treasuries by more than 15,000 BTC from peak levels, according to CoinDesk reporting. The economic rationale: holding a depreciating asset (in fiat terms, given the price decline from $126,000 in October 2025 to $66,300 currently) while sitting on power assets that hyperscalers will pay premium rates to access.

Revenue Economics: Mining vs. Colocation

The revenue differential between mining bitcoin and hosting AI workloads explains the speed of the transition:

  • Bitcoin mining revenue: ~$1 per kWh consumed
  • AI data center revenue: ~$25 per kWh consumed

At sub-15 J/TH efficiency and $0.07/kWh power costs, a top-tier miner like the Antminer S23 Hydro generates margins of approximately 46%. A current-gen air unit like the S21 XP yields roughly 23%. Older air miners near 17.5 J/TH sit at breakeven or below.

By contrast, IREN's Microsoft deal projects 85% EBITDA margins. Hut 8's lease includes built-in 3% annual escalators with no corresponding increase in power procurement costs (which are locked in).

The gap is widening. As network difficulty rises and block rewards remain halved, mining revenue per kWh declines. AI demand for compute, meanwhile, continues to expand as large language model training and inference workloads grow. Industry projections suggest AI and HPC could account for 70% of revenue for transitioned miners by end of 2026.

Capital Raises and Balance Sheet Restructuring

The capital markets have responded to the pivot by treating former miners as infrastructure companies:

  • IREN: Closed a $3.0 billion convertible senior notes offering on May 14, 2026. The deal was originally announced at $2.0 billion, upsized to $2.6 billion at pricing, and expanded to $3.0 billion through full exercise of a $400 million greenshoe option. The notes carry a 1.00% coupon and mature in 2033. At the initial conversion price of $73.07, the offering could issue up to 54.4 million shares. Net proceeds totaled approximately $2.96 billion.

  • Core Scientific: Pursuing $3.3 billion in junk-bond financing to fund AI infrastructure buildout.

  • Hut 8: Shares surged 35% in May and another 10–17% on the July 20 lease announcement, as the market re-rates the company from miner to AI landlord.

  • Riot Platforms: Shares climbed 13% in sympathy with Hut 8's AI announcements.

The re-rating thesis is straightforward: 15-year leases with investment-grade counterparties (Microsoft, AWS, unnamed Hut 8 tenant) provide revenue visibility that bitcoin mining — subject to halving cycles, difficulty adjustments, and price volatility — cannot offer.

Network Security Implications

The migration of industrial mining capacity to AI raises questions about Bitcoin's long-term security model. The network currently operates at 908 EH/s, well below the October 2025 peak of 1,154 EH/s. If the most capitalized mining operators continue to reallocate power to AI workloads, the hashrate may not recover to previous highs absent a significant bitcoin price increase.

However, several factors mitigate security concerns. Difficulty adjustments automatically recalibrate every 2,016 blocks, ensuring block production remains near the 10-minute target. The miners that remain operational tend to be the most efficient operators with the lowest power costs. And 908 EH/s remains astronomically high relative to any known attack capability.

The more pressing question is structural: if the most sophisticated operators with the best power contracts and largest facilities are systematically exiting mining for AI, what does the remaining miner set look like? The answer, based on current data, is smaller, more geographically distributed operators with direct access to cheap hydroelectric, geothermal, or stranded gas resources — a profile that may actually improve the network's decentralization.

Key Takeaways

  • Bitcoin hashprice hit a five-year low of $29/PH/s/day in Q1 2026. The average public miner loses approximately $13,700–$19,000 per bitcoin produced at current prices.
  • Network hashrate has declined 21.3% from the October 2025 peak of 1,154 EH/s to 908 EH/s as of mid-July 2026.
  • Listed miners have signed over $70 billion in AI/HPC contracts. The three largest individual deals — Hut 8 ($19.6B campus), Cipher ($5.5B), and IREN ($1.94B/year) — total tens of billions in committed revenue.
  • Miner treasuries have been liquidated: 15,000+ BTC sold across the sector, with Bitdeer reaching zero holdings and Core Scientific selling substantially all reserves.
  • AI data centers generate ~25x the revenue per kWh compared to bitcoin mining, explaining the speed and conviction behind the transition.
  • Despite the hashrate decline, Bitcoin network security remains robust at 908 EH/s, with difficulty adjustments functioning as designed.

Conclusion

The bitcoin mining industry is undergoing its most significant structural transformation since the China ban of 2021. But unlike that event — which redistributed hashrate geographically — the current shift is redirecting capital, infrastructure, and executive attention away from mining entirely.

The economics are unambiguous. At $66,300 per bitcoin and 127 trillion difficulty, most listed miners cannot profitably produce new coins. At $25 per kWh in AI data center revenue versus $1 per kWh in mining revenue, the opportunity cost of continuing to mine is untenable for operators sitting on gigawatts of contracted power.

What remains unclear is the equilibrium state. If enough miners exit, difficulty drops, and the remaining operators become profitable again — that is how Bitcoin's self-correcting mechanism works. The question is whether the most capitalized operators, having signed 15-year AI leases, will ever return. The contract structures suggest they will not.

Bitcoin mining is not dying. But the companies that once dominated it are becoming something else: AI landlords with legacy mining operations, rather than miners with AI side businesses. The hashrate will find its floor. The industry's identity has already shifted.

Sources & References

  1. CoinShares Bitcoin Mining Report – Q1 2026 — Hashprice, cost-per-coin, and profitability analysis
  2. Hashrate Index Roundup – July 13, 2026 — Network hashrate and difficulty data
  3. Hut 8 Fully Commercializes 1 GW Beacon Point Campus – July 20, 2026 — $9.8B second lease announcement
  4. CoinDesk – Bitcoin Miners Losing $19,000 Per BTC – March 2026 — Per-coin loss analysis
  5. CoinDesk – End of Bitcoin HODL: Public Miners Going All-In on AI – March 2026 — Treasury liquidation reporting
  6. IREN $3.0 Billion Convertible Notes Offering – May 2026 — Capital raise details
  7. Cipher Mining $5.5B AWS Lease — 300 MW, 15-year lease terms
  8. The Block – Core Scientific to Sell BTC Holdings for AI Pivot — Treasury liquidation details
  9. KuCoin – The Five-Fold Crunch: Bitcoin Mining Crisis 2026 — Five simultaneous pressure analysis
  10. KuCoin – Bitcoin 2026 Conference Highlights Mining Decline — 30% exhibitor decline data
  11. CoinDesk – Hut 8 Surges on $9.8B AI Data Center Lease – July 20, 2026 — Market reaction data
  12. Core Scientific Q1 FY2026 Results — 45% revenue growth, 9x colocation surge