The Decryption Threshold — Re-estimating the Quantum Threat to Blockchain Infrastructure
quantumcomputingreport.com Apr 4, 2026

The Decryption Threshold — Re-estimating the Quantum Threat to Blockchain Infrastructure

AI-summarised brief · reviewed before publication

Recent disclosures from Google Quantum AI and Oratomic have updated estimates for a quantum computer to break Bitcoin's cryptographic algorithm, reducing physical and logical requirements. A quantum computer with 1,200-1,450 logical qubits can compromise digital signatures in as little as 9 minutes, threatening Bitcoin transactions. This development highlights the divergence between fast-clock and slow-clock architectures, with significant implications for digital assets and quantum computer security.