ECC-256 quantum break timeline for BTC/ETH accelerates to ~10 days
Caltech and Oratomic say Bitcoin (BTC) and Ethereum (ETH) wallet encryption using **ECC-256** could be cracked by a quantum computer with ~26,000 qubits, in theory within about ten days. The study argues earlier estimates were too pessimistic and that optimal scenarios might require nearer to ~10,000 qubits.
For comparison, RSA-2048 is estimated at 102,000+ qubits and up to three months. Oratomic’s “neutral atom” approach is framed as needing far fewer qubits than a prior Google Quantum AI forecast (under 500,000).
The work also notes that attackers could use Shor’s algorithm to extract private keys on **ECC-256**-protected assets on a tight timeline, though an “instant” exploit is still seen as unlikely right away. Trading implication: near-term price moves may be muted, but longer-term risk rises for dormant wallets or address types that may not be ready for post-quantum migration.
Bearish
BTC/ETH are exposed to a faster-than-expected quantum threat against ECC-256, which can undermine long-horizon confidence and raise perceived tail risk. In the short term, markets may discount the practicality of an immediate “instant attack,” so spot moves could be limited. However, if traders start pricing greater urgency around post-quantum migration, address hygiene, and custodial upgrade cycles, sentiment can turn negative for BTC and ETH relative to other narratives. Longer term, the research supports higher probability of future key compromise—especially for dormant or non-upgraded wallets—keeping a risk premium in place.