Alice & Bob: 30,000 qubits could threaten Bitcoin keys
- —Estimate is about 17 times below Google Quantum AI's 500,000-qubit upper bound
- —6–7.1 million BTC, roughly 30% of supply, sit in exposed-key addresses
- —Migrating Bitcoin to quantum-resistant signatures could take years
- —Alice & Bob targets a 100-logical-qubit system by 2030
Why it matters: The lower hardware estimate raises pressure on Bitcoin to speed up its transition to post-quantum cryptography before fault-tolerant machines arrive.
Source: DiarioBitcoin