• Google's Willow quantum breakthrough narrows the timeline for threats to Bitcoin security, though current technology cannot break its cryptography.
• Magic state cultivation reduced quantum errors 40-fold, achieving 99.99% logical fidelity for T-states.
• A March 2026 Google Quantum AI white paper estimated breaking Bitcoin's elliptic curve cryptography would require fewer than 500,000 physical qubits.
• The experiment used at most 54 of Willow's 105 qubits; breaking Bitcoin would require substantially lower error rates.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Bitrue Ltd published the original content used to generate this news brief on October 16, 2026, and is solely responsible for the information contained therein.