
Bitcoin developer Jameson Lopp proposed freezing an estimated 5.6 million dormant bitcoin tokens worth $420 billion to protect them from potential quantum hackers. BIP-361, released Tuesday, explores phasing out current cryptographic signatures and invalidating transactions from quantum-vulnerable wallets. Lopp emphasized this is a contingency plan, not finalized policy. Any change requires network consensus. The proposal has sparked community debate between security concerns and Bitcoin's immutability principles.