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Google paper on 9-minute quantum attack on Bitcoin private keys jolts cryptography

Google has released a paper outlining a theoretical scenario in which a quantum computer could derive a Bitcoin private key in nine minutes. CoinDesk reported that the idea could affect not only Bitcoin but also other tokens such as Ethereum, and even cryptographic systems across private finance. The article explains how qubits differ from classical bits, describes Google’s superconducting approach and the fragility of quantum states, and highlights why quantum advances could pressure existing public-key cryptography.