Quantum Computing Threatens to Render Bitcoin Obsolete
A warning has been issued by experts that quantum computing could render Bitcoin obsolete in as little as four years, threatening the $470 billion worth of coins currently exposed to public view.
The threat is not new, but recent advancements have made it more pressing. David McAlvany, CEO of Vaulted, stated on a podcast that 'within four years we have quantum computing, and that is the end of Bitcoin.' He explained that with quantum computers, it would be possible to solve all math problems instantly.
Around 7 million Bitcoins are currently exposed, worth approximately $470 billion. While this is not an existential crisis, as Galaxy Digital estimated in March 2026, it does pose a significant risk.
Solutions are being proposed and implemented, such as post-quantum cryptography and compliance-and-privacy layers. American Fortress, an Austin-based company, claims to have developed a quantum-resistant solution that can be applied to all chains without requiring users to migrate their addresses. However, the company's patent filing has not been publicly audited, and its technical paper remains unpublished.
The debate surrounding Bitcoin's long-term viability is ongoing, with some experts questioning whether it will still exist in 5,000 years. McAlvany, who sells gold, expressed skepticism about Bitcoin's durability, stating that 'Bitcoin may or may not be,' while gold is likely to remain a reliable store of value.