Analysts warn $450B in Bitcoin faces quantum hack risk

• $450 billion in Bitcoin could be at risk if quantum computing technology reaches critical power levels.
• 6.7 million BTC are currently held in older, legacy wallets that are more vulnerable to cryptographic attacks.
• 85,000 BTC from decade-old wallets have moved in the last year, indicating that early holders may be preparing for future threats.

The Quantum Vulnerability of Legacy Wallets

A collaborative research effort involving Google, Caltech, and the quantum-focused firm Oratomic suggests that a massive portion of the Bitcoin supply is susceptible to future quantum attacks. The study identifies roughly 6.7 million BTC, valued at more than $450 billion, stored in addresses that could be compromised. These risks are primarily concentrated in "legacy" addresses, including many from the Satoshi era, where public keys are already exposed on the blockchain. The research claims that a sufficiently advanced quantum computer could potentially breach a standard blockchain's security in approximately 10 days.

Market Reaction and Expert Warnings

The price of Bitcoin experienced a 3.5% decline following the viral spread of the report, which was highlighted by analyst Nic Carter. The market remains under pressure as prominent figures weigh in on the long-term implications. Charles Edwards, founder of Capriole Investment, stated that Bitcoin might struggle to reach a new all-time high until the Bitcoin Core development team takes quantum risks seriously. Similarly, analyst Kyledoops pointed out that while the risk is currently concentrated in dormant addresses, the act of moving those funds could serve as a necessary defense mechanism.

Technical Skepticism and Industry Conflict

Despite the alarming headlines, some experts are questioning the immediacy of the threat. Security specialist Jameson Lopp noted that while the papers show theoretical advancements, they rely on specific assumptions that may not reflect current reality. Critics have pointed out that current quantum capabilities—currently peaking at 6,000 qubits for a few seconds—are a far cry from the 500,000 qubits needed to execute a successful attack within a nine-minute window. Furthermore, some observers noted that several authors of the study are employees or stakeholders in Oratomic, suggesting a possible commercial interest in promoting quantum security concerns.

Future Outlook for Price and Security

While some holders of old wallets are already active—with over 85,000 BTC from the early era moving in the past year—the broader market is also dealing with macroeconomic headwinds. Some analysts, such as MacnBTC, anticipate further price weakness in the coming months. Existing price models suggest that Bitcoin could find a bottom in the $40,000 to $50,000 range if macro pressures, including rising energy costs, continue to impact the sector alongside technological fears.