TL; DR
- Coinbase’s Quantum Advisory Council has published a report on post-quantum migration and coin abandonment.
- The report estimates that millions of Bitcoin could eventually be made public through outdated address formats and address reuse.
- The risk is future-oriented; the report does not say that quantum computers can break Bitcoin today.
Coinbase flags long-term quantum exposure
Coinbase’s Quantum Advisory Council has published a report exploring how Bitcoin could approach a future post-quantum migration, including the issue of coins tied to public keys, old P2PK addresses, and reused addresses.
The report estimates that roughly 7 million Bitcoin could face some form of future quantum exposure, including about 1.7 million BTC in old P2PK addresses and about 5 million BTC tied to reuse.
The concern is not that Bitcoin is currently broken. The report focuses on long-term planning for a world where sufficiently powerful quantum computers could one day threaten today’s public-key cryptography.
What Coinbase says can be done
The report discusses possible solutions, including migration deadlines, tools based on ‘zero-knowledge proofs’ such as BIP-361, and mechanisms such as an ‘hourglass’ limiter for the withdrawal rate. These ideas are intended to help the network think about a transition without causing unnecessary panic.
Any migration would be complicated. Bitcoin’s security model relies on broad consensus, careful engineering, and strong social coordination. Freezing or restricting coins would be controversial, especially when it comes to abandoned coins and inactive wallets.
Why this matters
For investors, the report is important because it views quantum risk as a governance and migration challenge, rather than a short-term market threat. That’s a more useful lens than the alarmist claims that quantum computers are about to break Bitcoin.
The debate also concerns old coins and lost coins, and whether inactive holders should be treated differently if a future cryptographic migration becomes necessary.
What to watch next
The next things to watch are community reactions to the report, the eventual development of BIP-361, and whether other major infrastructure companies release their own post-quantum plans.
The article should avoid claiming that quantum computers can crack Bitcoin today or that any migration has already been approved.
Market context
The broader market context is important because traders are no longer just reacting to token-specific news. Institutional flows, deposits, regulated derivatives, custody conditions, and policy changes now directly impact the pricing of Bitcoin and large-cap crypto assets. That makes developments in primary sources useful, even if they do not immediately lead to a sharp price movement.
For NewsBTC, the practical question is whether the development changes liquidity, risk appetite, compliance processes or institutional confidence. These are the signals that can influence market structure over time, especially if they come from official documents, regulatory communications, stock market announcements, or commonly followed data sources.
The editorial take-away is deliberately measured: the source confirms a real development, but the market impact depends on follow-up. Therefore, the article should separate verified facts from possible implications, giving traders enough context to understand the signal without turning it into a prediction.
From an editorial perspective, this makes the story worth covering as part of today’s broader crypto environment, rather than as a standalone hype cycle. The strongest version of the piece should stay close to the verified source, explain the practical risk or opportunity, and leave room for follow-up once official data, documents, or project statements become available.
This report is based on information from the Coinbase Quantum Advisory Council report.