Bitcoin Developer Floats Collateral Trap That Could Cost Quantum Thieves Their Own BTC

Bitcoin Core developer Cory Fields proposed 'quantum landmines' on the bitcoin-dev mailing list on November 4. A would-be quantum thief would need to post matching collateral before moving vulnerable coins. Owners could reveal hidden proof of ownership, reclaim their coins and take the thief's collateral. About 7.1 million BTC, or roughly 35% of supply, are at risk.