CryptoSlate
Cipher Mining filed a roughly $5.5 billion, 15-year lease with AWS to deliver 300 MW of turnkey space and power for AI workloads beginning July 2026, while IREN signed a roughly $9.7 billion, five-year GPU cloud contract with Microsoft deploying NVIDIA GB300 GPUs through 2026 at its 750 MW Childress, Texas campus supporting 200 MW of critical IT load. Together, the deals put a concrete price on what Bitcoin miners spent the last decade building: not the ASICs, but the powered, permitted, grid-interconnected land underneath them.
Why it matters
AI data centers cost $8M to $15M per megawatt to build, versus $700K to $1M for Bitcoin mining infrastructure, which means hyperscalers need miner-owned sites more than miners need hyperscaler contracts — a structural imbalance that flips the negotiating table. CoinShares estimates public miners' AI and HPC contracts had already surpassed $70 billion in aggregate by early 2026, with listed miners on pace to derive as much as 70% of revenue from AI by year-end, up from roughly 30%. The Cipher and IREN deals are the price discovery that makes those numbers real rather than directional.
Market impact
Fidelity's January 2026 analysis identified a mining-to-AI crossover at roughly $60 to $70 per petahash per day for a 20 J/TH fleet, and the Hashrate Index's May 25 reading of $35.88 per PH/day puts the current spot 67% to 95% below that band. VanEck's April ChainCheck recorded 30-day hash rate momentum at the 16th percentile and 90-day at the 9th — the densest cluster of sustained drawdowns since China's 2021 ban — while CoinWarz data on May 28 showed difficulty at 136.61T with a 90-day change of -5.40%. Power locked into 15-year AWS leases or five-year Microsoft GPU contracts cannot rotate back to mining, which means the difficulty adjustment absorbs exits through cheaper cost-per-block rather than through reactivated rigs. The split is structural: power-campus owners become data-center landlords, and Bitcoin mining concentrates among operators with cheaper, intermittent, or internationally diversified energy.
Frequently asked questions
-
What did Cipher Mining and IREN sign with AWS and Microsoft?
Cipher filed a ~$5.5B, 15-year lease with AWS for 300 MW of turnkey space and power, with delivery beginning July 2026. IREN signed a ~$9.7B, five-year GPU cloud contract with Microsoft to deploy NVIDIA GB300 GPUs through 2026 at its 750 MW Childress, Texas campus, supporting 200 MW of critical IT load.
-
Why are AI contracts more profitable than Bitcoin mining for some operators?
Fidelity's January 2026 analysis puts the mining-to-AI crossover at $60 to $70 per petahash per day for a 20 J/TH fleet. The Hashrate Index read $35.88 per PH/day on May 25, placing the current spot hash price 67% to 95% below that crossover band.
-
How much of miner revenue could come from AI by year-end 2026?
CoinShares estimates that public miners' AI and HPC contracts had surpassed $70 billion in aggregate by early 2026, with listed miners on pace to derive as much as 70% of revenue from AI by year-end, up from roughly 30%.
-
Why can't miners rotate power back to Bitcoin if ASIC economics recover?
Power committed under 15-year AWS leases or five-year Microsoft GPU contracts is contractually locked into AI workloads and cannot be redirected to mining rigs, unlike older cycles when idle machines could simply be switched back on.
-
What happens to Bitcoin's network if hash rate keeps falling?
Bitcoin's 2,016-block difficulty adjustment absorbs hash-rate exits by lowering the computational cost of valid blocks, lifting revenue per unit of remaining hash. VanEck's April ChainCheck recorded 30-day hash rate momentum at the 16th percentile and 90-day at the 9th, the densest cluster of sustained drawdowns since…
Crypto News
TheBlock
CoinDesk
CZ Binance
CoinTelegraph