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Frequently Asked Questions
Not for decades, if ever. Current quantum computers can only handle 5- or 6-bit problems, while Bitcoin uses 256-bit encryption. Experts cited in the paper, including quantum pioneer John Preskill, believe breaking Bitcoin’s cryptography is still “decades away.”
The paper explains that media headlines often exaggerate small research improvements. A new theoretical paper might improve an algorithm slightly, but real-world systems still need millions of qubits to threaten Bitcoin—far beyond today’s ~100-qubit machines.
No. Bitcoin’s cryptography is safe against all known forms of attack—including AI systems, classical supercomputers, and current quantum computers. Even the fastest machines would need more energy than the entire world produces in years just to crack a single key.