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Google Willow Quantum: A Leap in Computing Power

Google has unveiled the Willow Quantum Processor, boasting 105 qubits and enhanced error rates. While this advancement demonstrates Google’s leadership in quantum technology, it is far from threatening Bitcoin’s cryptography. Here’s why.

Bitcoin and Quantum Resistance

Bitcoin employs two main cryptographic systems:
	1.	ECDSA-256 (Elliptic Curve Digital Signature Algorithm):
-Vulnerable to Shor’s Algorithm, which quantum computers could theoretically exploit to break private keys.
-However, breaking ECDSA would require more than 1 million ideal qubits. Willow, with 105 qubits, is nowhere near this capability.
	2.	SHA-256 (Secure Hash Algorithm):
-Resistant to Shor’s Algorithm but theoretically vulnerable to Grover’s Algorithm, which could halve the time needed for brute-force attacks.
-Practical application of Grover’s Algorithm would demand millions of physical qubits, far beyond today’s quantum processors.

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