# Bitcoin Core developer Cory Fields proposes collateral "landmines" to make quantum theft costly

On the Ethereum side, researchers published negative results showing that a folding method failed to beat full recursion for aggregating post-quantum signatures in leanVM.

- Published: 2026-11-09T05:43:40.268Z
- Canonical: https://polylog.news/crypto/2026-11-09/bitcoin-core-developer-cory-fields-proposes-collateral-landm
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Polylog editors](https://polylog.news), [Ethereum Research (leanVM)](https://ethresear.ch/t/folding-vs-full-verifier-recursion-for-pq-signature-aggregation-in-leanvm-measurements-and-negative-results/26227), [Ethereum Research (HSM proposal)](https://ethresear.ch/t/solving-pqc-bandwidth-via-nybrind-wiesner-money-lattice-hsms/26229), [TFTC](https://www.tftc.io/quantum-landmines-bitcoin-cory-fields-collateral-trap), [Crypto Briefing](https://cryptobriefing.com/cory-fields-quantum-landmines-bitcoin-theft/)

Cory Fields, a Bitcoin Core developer, has proposed a way to turn quantum attacks into "financial traps" in which thieves lose their own bitcoin, as Goku Crypto News reported in French. He posted the idea to the bitcoin-dev mailing list in…

This story is for subscribers. Read it in full at https://polylog.news/crypto/2026-11-09/bitcoin-core-developer-cory-fields-proposes-collateral-landm (subscription information: https://polylog.news/pricing).