Quantum Risk

Europol says some Bitcoin wallets have no quantum fix, leaving them vulnerable to quantum computers cracking private keys.

Risk Assessment

The EU police agency rejects claims that quantum computing will collapse crypto, but advises individual holders to move exposed funds to new wallets before an attack arrives.

Exposed Wallets

Analytics firm Glassnode estimates 6.04 million BTC, or 30.2% of all coins, are already exposed through reused addresses and exchange wallets.

Migration Timeframe

A full migration would need at least 76 days of the network's entire capacity, stretching to about 300 days if spread across a quarter of each block.

Conclusion

Europol warns that upgrades on a network with no central operator take years, and some developers already back plans to freeze vulnerable coins.