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Google warns quantum computers could break bitcoin faster

Google | Quantum Computers Could Crack Bitcoin in 9 Minutes | Security Concerns Emerge

By

Isabella Ramirez

Apr 26, 2026, 12:57 PM

3 minutes needed to read

A graphic showing a quantum computer with Bitcoin symbols, illustrating the potential risk to Bitcoin encryption by advanced technology.
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A recent claim from Google suggests quantum computers could decode Bitcoin’s encryption much sooner than anticipated. In responses, experts debate the actual risks, as significant vulnerabilities already exist in the cryptocurrency space.

What's Going On?

Two recent research papers indicate that quantum hardware may break Bitcoin's encryption within minutes. Google estimates that fewer than 500,000 qubits could achieve this in about 9 minutes. Meanwhile, Caltech suggests 10,000 qubits might take around 10 days. Currently, existing quantum systems only perform with a few thousand qubits, highlighting a gap between theory and practice.

The Risky Future of Cryptocurrency

An alarming 6.9 million Bitcoin, nearly a third of all BTC in circulation, resides in wallets theoretically open to quantum attacks. Some industry players are pushing back against the concern.

"This is just FUD, pretty sensationalist, and the threat is years away," argues one commenter about the narrative surrounding quantum risks. Another adds, "By the time quantum becomes a real threat, we may see improvements in security protocols."

What’s Being Done?

Bitcoin developers are proactively addressing these concerns. They’re testing quantum-resistant upgrades like BIP-360, while platforms like Coinbase are consulting experts on this emerging threat. Reports indicate that the Bitcoin community is alerting to the risks, with an eye on upgrades.

"The actual unknown isn’t whether quantum gets there; it’s whether the upgrade coordination happens fast enough," notes a vigilant observer.

Experts highlight another point: quantum computing threatens asymmetric encryption more than symmetric types, which many applications rely on. Still, the crypto sector faces unique challenges due to a lack of regulatory oversight and data protection laws.

Key Points from Public Discussion

  • πŸ’‘ Many believe quantum computing risks apply to all encryption, not just cryptocurrency.

  • πŸš€ Some users feel advancements in quantum tech are overhyped and may not arrive soon.

  • πŸ”’ Strategies are already being developed to counter potential quantum threats in Bitcoin.

Analysts largely agree the practical implications remain distant, with significant advancements needed before quantum technology could fundamentally disrupt crypto security. As the industry braces for potential changes, one question lingers: how fast can quantum hardware really develop?

With the constant evolution of technology, crypto enthusiasts are advised to stay informed and anticipate changes, rather than panic.

For ongoing updates on crypto security, visit CoinDesk.

Image Sources: Google Quantum Announcement β€’ Bitcoin Security Updates

Predictions on Quantum Impact in Cryptocurrency

There’s a strong chance that the cryptocurrency community will soon see significant changes in security protocols driven by the threat of quantum computing. Experts estimate around a 70% likelihood that major exchanges and developers will roll out quantum-resistant upgrades within the next three to five years, as the industry reacts to advancements in quantum hardware. As more researchers shed light on the vulnerabilities of Bitcoin and other cryptocurrencies, pressure will mount for rapid innovation. This proactive stance may lead to an evolution of encryption methods that significantly enhances the resilience of digital assets against future quantum attacks.

A Historical Parallel in Technology Development

Reflecting on the early days of the Internet can provide insight into the current situation. Just as developers rapidly adapted protocols to secure data against threats like viruses and malware, the cryptocurrency sector is poised to engage in a similar transformative leap. When email first became mainstream, security concerns were dismissed by many as overblown, until incidents forced organizations to adopt robust measures. The race to develop solutions for quantum risks mirrors that pathβ€”highlighting how industries often wait until the potential consequences complicate the landscape before committing to necessary and timely innovations.