ECDSA.Fail contest cuts theoretical resources for quantum attack on Bitcoin by 86%
- —The ECDSA.Fail contest score fell from 10.75 billion to 1.496 billion, and to 1.259 billion after July 26
- —The best circuit uses 1,151 logical qubits and about 1.3 million quantum operations
- —The result is more than 50% below Google Quantum AI's estimate of 2.993 billion
- —Only one stage of the attack was optimized, not the entire key-recovery process
Why it matters: Faster theoretical calculations bring closer the need for Bitcoin and Ethereum to move to post-quantum signatures, though there is no specific timeline for the threat.
Source: Journal du Coin