Google's Willow chip reduces quantum error rates by roughly 40 times compared to prior hardware, lowering one of the key bottlenecks between current quantum computers and a practical attack on Bitcoin wallets. The threat is concentrated in Satoshi-era coins held in exposed public-key address formats. No near-term protocol response is imminent, but the combination of this hardware milestone and the newly formed Quantum Alliance below makes the long-horizon network security question harder to defer.