When will quantum computers reach Bitcoins breaking point?

Between 2029 and 2033. IBM ships Starling in 2029 with roughly 200 logical qubits, and Blue Jay in 2033 with over 2,000 logical qubits on about 100,000 physical - past the 1,200-1,450 the break requires. Google targets 2029. NSA CNSA 2.0 sets migration deadlines of 2030-2035.

Which company will break Bitcoin first?

The race includes IBM (Starling 2029, Blue Jay 2033 at ~100,000 physical qubits), Google (targeting a useful error-corrected machine by 2029), and classified programs whose progress is not public. Any could reach the threshold first, and the one that does may not announce it.

📈 Quantum Computing Timeline

Q: What is Bitcoins quantum breaking point?

Bitcoin ECDSA falls to 1,200-1,450 logical qubits running Shors algorithm - and the whole attack fits inside fewer than 500,000 physical qubits, completing in minutes. That is the March 2026 benchmark from Google Quantum AI working with the Ethereum Foundation and Stanford, roughly half the ~2,330 logical qubits earlier estimates assumed. An independent Caltech/Oratomic analysis puts the same break at about 26,000 physical qubits on neutral-atom hardware over roughly 10 days.

Bitcoin's Breaking Point Analysis

🏁 The Qubit Race

Only published milestones below. Where a number is physical, it says so — the confusion between physical and logical qubits is where most quantum scare stories go wrong, and where most reassurance does too.

Year	Milestone	Qubits	BTC Threat Level
2019	Google Sycamore — "quantum supremacy", 200 seconds vs a claimed 10,000 classical years (IBM disputed: ~2.5 days)	53 active physical (54 fabricated)	🟢 LOW
Dec 2023	IBM Condor — crosses the thousand-qubit line	1,121 physical	🟢 LOW
Dec 2024	Google Willow — first below-threshold error correction; under 5 minutes vs ~10²⁵ classical years	105 physical	🟢 LOW
2026 (now)	Best public hardware anywhere; IBM Kookaburra stores and processes encoded information. Nobody has thousands of logical qubits.	~2,500 physical, none fault-tolerant at scale	🟡 MEDIUM — HNDL harvesting active
2027	IBM Cockatoo — two Kookaburra modules entangled	Modular	🟡 MEDIUM
2029	IBM Starling — first large-scale fault-tolerant machine, 100 million gates. Google targets the same year.	~200 logical	🟠 HIGH
2033	IBM Blue Jay — past the ECDSA-256 threshold of 1,200–1,450 logical	>2,000 logical / ~100,000 physical	🔴 CRITICAL

💥 The Breaking Point

Bitcoin ECDSA (secp256k1) 256-bit keys

Shor's Algorithm Requirement 1,200–1,450 logical qubits

Breaking Point <500,000 physical qubits

Time to Take Your Key Minutes

Neutral-atom route (Caltech/Oratomic) ~26,000 physical qubits, ~10 days

Superseded estimate ~2,330 logical (2017)

Reality Check: the numbers above are from Google Quantum AI, working with the Ethereum Foundation and Stanford, March 2026. Note which direction they moved. The requirement did not grow with better analysis — it halved. Meanwhile IBM's Blue Jay is scheduled for 2033 with over 2,000 logical qubits on roughly 100,000 physical. The hardware is climbing toward a bar that is coming down to meet it.

For scale: RSA-2048 now falls to under 1 million noisy qubits in under a week (Gidney, May 2025), down from 20 million qubits and 8 hours in 2019. But RSA is not the near target. ECDSA-256 is cheaper, and Bitcoin is standing on it.

🛡️ Protect Your Assets Now

Don't wait for the breaking point. Migrate to quantum-resistant cryptocurrency:

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