This Bitcoin Developer’s Idea Would Make Quantum Attacks a Losing Bet

In brief

• Bitcoin developer Cory Fields proposed hidden “landmines” that could let wallet owners seize a quantum thief’s collateral.
• Two auction designs would target apparently abandoned coins, where nobody may be around to spring a landmine.
• Everything remains hypothetical: Bitcoin would need quantum-safe wallets, new consensus rules, and agreement on how to activate them.

Bitcoin developer Cory Fields has an unusual idea for dealing with future quantum thieves: Make them risk their own Bitcoin every time they try to steal someone else’s.

In a November 4 post to the Bitcoin development mailing list, Fields outlined “quantum landmines” and two types of auctions designed to turn attacks on vulnerable wallets into expensive gambles. He called the ideas “thought experiments,” not a completed Bitcoin upgrade.

Bitcoin owners use a secret private key to authorize transactions. A matching public key lets the network check their signatures without learning the secret.

If the whole idea seems too hard to understand, we used AI to generate a video to help you grasp it:

Today’s computers cannot realistically calculate that private key from the public one. A sufficiently powerful quantum computer could use a mathematical technique called Shor’s algorithm to do it, potentially letting a thief spend coins as if they owned them.