Cory Fields proposes quantum landmines to deter Bitcoin theft

The Bitcoin Core developer wants future quantum attackers to put their own coins at risk before they can touch anyone else's Bitcoin ’s quantum problem has mostly been framed as a race: upgrade the network before someone builds a machine capable of cracking its cryptography. Cory Fields wants to add a second idea to the mix: make the thief pay first. Fields, a Bitcoin Core developer who works at MIT’s Digital Currency Initiative, posted a proposal to the bitcoin-dev mailing list on Wednesday, November 4, 2026.