**[Google's New Breakthrough in Quantum Chips: Reducing Key Computational Error Rates, Early Bitcoin Wallet Quantum Risks Under Scrutiny]** BlockBeats News, October 17 — Google announced that its Willow quantum chip has reduced the error rate in preparing the special states required for quantum computing (Magic States) by approximately 40 times using a method called "Cultivation." The related research was published this week in *Science*, and it is expected to lower the hardware costs of future large-scale quantum computers while drawing more attention to the potential threat of cracking Bitcoin wallets. Magic States are critical resources required for executing certain quantum computing operations, and their preparation process consumes significant hardware. In this experiment, Google achieved approximately 99.99% state fidelity, though only about 8% of attempts passed the screening process. Researchers noted that further scaling of experiments is needed, along with addressing issues such as real-time operation and error correction. In March of this year, Google estimated that, under specific hardware assumptions, future quantum computers might require fewer than 500,000 physical qubits to crack the cryptography used in Bitcoin and Ethereum wallets. For Bitcoin, some early wallets have had their public keys exposed since their creation, theoretically making them potential targets for future quantum attacks. Wallets with undisclosed public keys, however, may face different attack conditions. Nonetheless, this breakthrough does not mean that quantum computers are currently capable of cracking Bitcoin. Google's previous cost estimates for such attacks already assumed the use of efficient Magic States preparation methods, so this achievement cannot be simply interpreted as reducing the cost of cracking Bitcoin by another 40 times. The research remains in the stage of advancing quantum hardware and error correction technologies, and the complete equipment and engineering capabilities required for actual attacks have yet to be realized. [Original Link]