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Blockstream’s adam back on quantum threat to bitcoin

Quantum Threat to Bitcoin | Blockstream's Back Downplays Urgency

By

Emma Johansson

Apr 26, 2026, 06:42 AM

2 minutes of duration

Adam Back speaking at a tech conference about the risks of quantum computing on Bitcoin, with a focused audience in the background.
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The co-founder of Blockstream, Adam Back, claims that while quantum computing poses a potential threat to Bitcoin, its impact is not immediate. His remarks have sparked a lively debate among attendees as tech advancements appear to close in on traditional cryptographic methods.

Insights from the Frontlines of Quantum Research

Comments surrounding Back's statements suggest that while experts acknowledge the looming quantum challenge, they also assert that significant breakthroughs may still be many years away. One participant emphasized that major firms, including Google, estimate a timeline of 5 to 10 years before quantum computers could effectively undermine Bitcoin's security.

"Blockstream is just trying to pump and sell their bags," remarked one user, indicating skepticism about Back’s reassurances.

The sentiment surrounding this conversation is mixed. While some rally behind the idea that quantum threats are manageable, others warn that preparations must begin without delay.

  • Quantum computing developments: New research has suggested methods may reduce the complexity of breaking Bitcoin's cryptography. However, current quantum technology isn't yet capable of achieving this.

  • Importance of gradual upgrades: Back pointed out that Bitcoin can implement post-quantum upgrades through existing protocols. The gradual transition is essential, as it helps avoid major disruptions in the crypto ecosystem.

  • Developer migration concerns: As one comment warned, transitions to quantum-resistant infrastructure may not just happen smoothly. Past experiences suggest coordination challenges could hinder progress.

Key Takeaways

  • πŸ” Experts say full quantum threat is about 5-10 years away.

  • πŸ› οΈ Gradual upgrades to Bitcoin are essential to prepare for this future.

  • ⚠️ Developers face potential coordination hurdles in adapting infrastructure.

Sentiment among commentators appears cautious, yet There is a strong sense of urgency. As analysts continue to debate the risks posed by quantum computing, it remains evident that the time for proactive measures is now, rather than later.

Anticipating the Quantum Path Forward

Experts predict that organizations involved with Bitcoin will start to implement quantum-resistant measures at an increasing rate over the next few years. There’s a strong chance that by 2028, many major players within the crypto industry will have adopted robust security protocols to counter anticipated quantum threats. As quantum computing evolves, expectations are that firms will invest heavily in research, indicating an increased urgency to address these vulnerabilities. With approximately 70% likelihood, we’ll see significant updates to Bitcoin's infrastructure, highlighting the pressing need for cooperation among developers to balance innovation with security.

A Lesson from the Rise of the Internet

In the late 1990s, as the Internet gained traction, companies like AOL rushed to adopt new technologies. Some embraced the evolving landscape, while others hesitated. This divide caused many established businesses to falter as broader adoption transformed communication and commerce. Analogous to today’s struggle with quantum threats, history shows us that those who adapt quickly stand a better chance of survival and success. The race to stay relevant and secure during technological upheaval can serve as a critical lesson for Bitcoin as it prepares for the quantum age.