Research says cracking Bitcoin keys may require only approximately 30000 physical quantum bits
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AT A GLANCE
The study says the estimated quantum-computing resources required to crack Bitcoin keys have fallen to approximately 30000 physical qubits.
Article
Report: The number of physical qubits required to crack Bitcoin keys could fall to approximately 30000 units
PANews October 30 reported, citing CoinDesk and The Quantum Insider, that quantum computing company Alice & Bob published research stating that, based on its cat qubit architecture, cracking the 256-bit elliptic-curve key (ECDLP-256) would require approximately 29588 physical qubits and take approximately 62 minutes, about March fewer hardware units than Google's estimate this year of fewer than 500000 units, a reduction of approximately 17 times. As this duration is still longer than Bitcoin's average block time of approximately 10 minutes, funds would still be difficult to steal before transaction confirmation, but more than 6000000 pieces BTC held at addresses with exposed public keys face greater risk. The research remains a theoretical estimate; Alice & Bob expects hardware advances and declining resource requirements to converge in the early 2030 s, and calls for Bitcoin to begin its post-quantum migration as soon as possible. In addition, the research estimates that cracking RS...
Key points
01
Alice & Bob published research stating that, based on its cat qubit architecture, cracking Bitcoin's 256-bit elliptic-curve key would require approximately 29588 physical quantum bits and take approximately 62 minutes.
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This estimate requires fewer hardware units than Google's estimate this year of March fewer than 500000 units, a reduction of approximately 17 times.
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Approximately 62 minutes remains longer than Bitcoin’s approximately 10-minute average block time; the study says that stealing funds before transaction confirmation remains difficult at present.
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More than 6000000 BTC in addresses with exposed public keys face greater risk.
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This study is a theoretical estimate. Alice & Bob expect hardware advances and declining resource requirements to converge in the early 2030 decades, and call for Bitcoin to initiate a quantum-resistant migration.
AI-assisted interpretation
The following is analysis, separate from reported facts. Verify important claims independently.
Quantum computers may eventually attempt to break the keys corresponding to publicly disclosed Bitcoin public keys. The study estimates that the equipment and time currently required still exceed the transaction confirmation window, but the relevant addresses may face greater long-term risk.
Why it matters to readers
This suggests that Bitcoin’s quantum-resistant migration may need to be advanced ahead of time, especially for addresses whose public keys have already been exposed.
Ordinary users should not currently interpret this theoretical estimate as meaning that funds can already be stolen immediately, but should monitor progress on post-quantum upgrades for wallets and the Bitcoin network.
Risks and unknowns
The study is a theoretical estimate and has not yet demonstrated the existence of a reproducible real-world attack.
The evidence does not provide the complete study content; the original text is truncated at “RS...”
No independent review results for this estimate have been provided.
Future hardware advances, resource requirements, and actual runtime remain uncertain.
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Related concepts
Physical qubits
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