Alice & Bob’s model cuts hardware needed to break Bitcoin keys by about 17 times
· regulatory · Sentiment: neutral
A new quantum computing model from Alice & Bob reduces the hardware resources required to break Bitcoin’s ECDSA keys by approximately 17 times compared to prior estimates. The improvement stems from more efficient error-corrected logical qubits and optimized algorithms for solving the discrete logarithm problem. While still requiring a massive, fault-tolerant quantum computer far beyond current capabilities, the breakthrough lowers the theoretical barrier and accelerates the projected timeline for quantum threats to Bitcoin. The key implication is that Bitcoin’s cryptographic security margin is narrower than previously thought, increasing urgency for post-quantum migration planning.