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Bitcoin developers propose a quantum attack-triggered coin freeze to avoid premature restrictions.

Protocol Fundamentals
16 Apr 2026
Unchained
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Neutral
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Bitcoin developers are considering a new approach to handle potential quantum computing threats by introducing a 'canary fund' that would only trigger a coin freeze if a quantum attacker proves the threat by moving funds. This method contrasts with the earlier BIP-361 plan, which schedules a mandatory freeze of legacy Bitcoin addresses regardless of an actual attack. The canary fund holds a bounty that only a quantum-capable machine could unlock, activating a soft fork to freeze vulnerable wallets if the cryptography is broken. This proposal aims to preserve user access to coins until a real threat emerges but depends on the attacker choosing the bounty over theft, raising some risks. The debate highlights ongoing concerns about Bitcoin's security against future quantum computing advances.

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