“Q-Day Prize” Challenge: Crack Bitcoin's Private Key, Win 1 BTC

Can quantum computers break Bitcoin's security? That was the question that hung over the crypto community since the early days of quantum tech—and now, it's being put to the test. Quantum computing research company Project 11 has launched the "Q-Day Prize", an international challenge to determine whether quantum computers can solve the cryptographic backbone of Bitcoin. The prize? A whole 1 BTC.

What Is the Q-Day Prize Challenge?

The Q-Day Prize challenges participants to break any component of a Bitcoin private key using a true quantum computer and Shor's Algorithm, a quantum method used to factor large numbers and even shatter classical cryptographic methods. The catch? Quantum computers alone are permitted—no classically computing loopholes.

Competition members have until April 5, 2026, to prove themselves. The goal is to assess whether quantum computing can reasonably break the Elliptic Curve Cryptography (ECC) that secures Bitcoin.

Why is it significant?

This isn't a hackathon competition for hackers—it's a science experiment with serious consequences. Bitcoin and most cryptocurrencies are based on ECC, which is fortissimo secure against our present computing powers. However, quantum computers, once strong enough, would make ECC-based systems susceptible.

By paying 1 BTC as a reward, Project 11 is challenging the world's greatest minds to see if that hypothetical threat is nearer than we suppose. The results could enlighten the crypto sector as to when new, quantum-proof cryptographic techniques should be implemented.

Preparing for a Quantum Future

Despite that current quantum devices are not as powerful as it takes to attack Bitcoin, the Q-Day Prize is a pre-emptive move toward shaping the future of cryptocurrency. It might spur efforts on post-quantum cryptography and assist with making the crypto economy ready for the inevitable proliferation of quantum computers.

Whether someone does or not break the test by 2026, the test guarantees something to learn from how cryptocurrency systems withstand a post-quantum future.

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Conclusion:

The Q-Day Prize from Project 11 is not only a reward—it's an alarm call. As quantum computing develops, so should the cryptographic systems that protect our digital property. With a 1 BTC prize on the line, this challenge could be the first serious consideration of what a post-quantum crypto future might be like.