7 Million Bitcoin at Quantum Risk: Coinbase Council Warns of Future Threat

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Coinbase Council Warns 7 Million <a href="https://jpygbp.com/btc-usd/">Bitcoin</a> May Face Future Quantum Risk

TL;DR

  • Coinbase’s Quantum Advisory Council says post-quantum migration planning should begin before quantum attacks become practical.
  • The report estimates about 7 million BTC are quantum-vulnerable because public keys are exposed through legacy formats or address reuse.
  • About 1.7 million BTC are said to sit in legacy Pay-to-Public-Key addresses, including early mined and potentially abandoned coins.
  • The council frames the issue as a long-term governance challenge, not an immediate emergency.

Coinbase’s experts on quantum computing are cautioning that Bitcoin and other cryptocurrency systems should start preparing for the future threat of quantum computers now, even though those computers aren’t powerful enough to crack current security measures yet. They emphasize proactive planning is crucial.

A recent report from June 11th, called “Post-Quantum Migration and Abandoned Coins,” highlighted a challenge for the network on two fronts: the technical work of switching users to more secure addresses and deciding what to do with coins that aren’t switched over. The main issue isn’t just *how* to move people to quantum-safe accounts, but also *what* should happen to those coins left behind.

Currently, existing quantum computers aren’t powerful enough to crack the security protecting cryptocurrencies. But the report highlights that this is still a significant long-term concern. Updating the systems that power these decentralized networks can take a lot of time and effort – especially when dealing with user money, lost accounts, and ownership issues.

Why Some Bitcoin Is More Exposed

According to a Coinbase report, about 7 million Bitcoins are potentially at risk from future quantum computers. This includes coins held in addresses where the public keys are already known, and those where reusing an address after a transaction reveals the public key.

A particularly vulnerable group of Bitcoin addresses are older “Pay-to-Public-Key” addresses. Approximately 1.7 million BTC are currently held in these addresses, which publicly display the account’s public keys. This includes some of the very first bitcoins ever mined, as well as funds that may have been lost or are no longer actively used.

This isn’t a typical software update. We can ask current users to transfer their funds to new, secure addresses when the technology is ready. However, recovering funds from old, forgotten wallets or inactive accounts is much more difficult, as there may be no one around to move those funds.

The Governance Dilemma

The council discussed a few main options for upgrading the system. One possibility is setting a firm deadline for the upgrade; any accounts that haven’t been updated by then could be locked or have their funds destroyed to protect them from potential theft using future quantum computers. While this would make the network safer, it also raises concerns about ownership rights.

Another approach is to simply maintain the current system and not take any action, which would keep at-risk cryptocurrencies safe for now. While this avoids immediate complications, it carries the risk that future hackers with powerful quantum computers could potentially steal those funds.

The report explores some compromise solutions too. One idea is to limit the amount of cryptocurrency that can be transferred from older accounts within a specific timeframe – this is sometimes called an ‘hourglass’ approach. Another involves using technologies like BIP-361 and zero-knowledge proofs, which would allow users to prove they own old accounts without revealing private details.

Planning Before The Crisis

The council suggests focusing on building quantum-safe security now, separately from discussions about how to deal with old or compromised cryptocurrencies. Essentially, development can move forward even while the industry figures out how to handle potentially problematic coins in the future.

This difference is important. If we wait until quantum computer attacks are happening, networks will scramble to make necessary technical changes, move digital wallets, get support from exchanges, and update how things are governed. Starting to prepare now gives developers and users time to thoroughly test everything and avoid making hasty choices.

Bitcoin owners shouldn’t worry about immediate danger, but this highlights the need for long-term security plans for digital assets. As crypto networks hold more value over time, it’s crucial to proactively prepare for necessary changes to encryption methods, rather than waiting for a crisis.

Coinbase’s recent findings contribute significantly to this ongoing discussion. While deciding what to do with outdated cryptocurrencies won’t be simple, the industry group emphasizes that preparing for quantum computing threats is now a pressing concern – it’s no longer something we can put off.

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2026-06-12 16:54