GOOGLE ANNOUNCES MAJOR QUANTUM COMPUTING BREAKTHROUGH WITH IMPLICATIONS FOR BITCOIN SECURITY Google Quantum AI researchers have achieved 99.99% logical fidelity in producing “magic states” on the company’s 105-qubit Willow processor, reducing errors by 40x. The breakthrough, published in Science, addresses one of the biggest engineering bottlenecks preventing quantum computers from scaling to the point where they could threaten Bitcoin’s cryptography. Earlier this year, Google published research suggesting that breaking Bitcoin’s cryptography could require fewer than 500,000 physical qubits, roughly 20x fewer than previous estimates. That was an algorithmic breakthrough, demonstrating how an attack could theoretically be performed with fewer resources. Today’s announcement represents a complementary hardware breakthrough, demonstrating progress toward making the necessary quantum operations reliable and less resource-intensive. While this does not mean Bitcoin’s cryptography can be broken today, it represents another significant step toward cryptographically relevant quantum computers. The timeline for a potential quantum threat to Bitcoin remains uncertain, but the case for accelerating Bitcoin’s transition toward quantum-resistant cryptography continues to strengthen.