Bitcoin Core developer Cory Fields has outlined three proposed mechanisms intended to discourage the future theft of Bitcoin through quantum computing attacks. The concepts — known as Quantum Landmines, Staked Auction, and Sats Auction — would introduce financial consequences for attackers by requiring an equivalent amount of Bitcoin as collateral when spending vulnerable BTC after quantum attacks become feasible, according to a report by Wu Blockchain.

The proposals address a potential security challenge involving legacy Bitcoin holdings. The concern is cryptographic: spending Bitcoin requires an elliptic-curve digital signature, and a sufficiently capable quantum computer could theoretically derive a private key from a public key it can observe on-chain — a scenario most relevant to older coin formats. Under Fields' proposed framework, anyone attempting to spend such BTC following the emergence of practical quantum attacks would have to provide an equivalent amount of BTC as collateral. The requirement is intended to make unauthorized access financially costly, rather than allowing an attacker to simply take control of vulnerable funds.

How Quantum Landmines Would Work

Quantum Landmines would provide a protection mechanism for Bitcoin owners who establish cryptographic proofs before quantum attacks become feasible. Under the proposal, owners who prepare these proofs in advance could use them to protect their funds and claim the collateral posted by an attacker.

The mechanism therefore relies on advance action by the original owner. Establishing the required cryptographic proof beforehand would give the a way to demonstrate their claim if someone later attempted to spend the vulnerable BTC using quantum computing capabilities.

Staked Auction and Sats Auction Introduce Financial Risks

The other two concepts, Staked Auction and Sats Auction, would use auction-based mechanisms to create financial risks for potential attackers. They are designed to make an attack costly even in cases where the original private keys are believed to have been lost.

Under these proposed arrangements, third parties could compete for the collateral posted by an attacker. This introduces an additional layer of financial exposure for anyone attempting to exploit vulnerable Bitcoin holdings, rather than treating the collateral as a straightforward requirement with no further consequences.

One specific feature of the proposed Staked Auction design is that the vulnerable BTC would be burned instead of being returned to its original owner. This distinguishes the mechanism from a recovery process in which the original holder simply regains control of the affected coins.

Proposals Remain at the Conceptual Stage

Fields has emphasized that Quantum Landmines, Staked Auction, and Sats Auction remain conceptual proposals. Their implementation details have not yet been developed, meaning the mechanisms should not be interpreted as finalized Bitcoin features or an approved network upgrade. Context matters here: changes to Bitcoin's protocol advance through an open, consensus-driven process, typically moving from discussion to formal proposal to implementation only with broad agreement among developers, miners, and node operators. The wider industry has been preparing in parallel — the U.S. National Institute of Standards and Technology published its first finalized post-quantum cryptography standards in 2024.

The proposals outline different ways to address the financial incentives surrounding potential quantum-enabled theft. Quantum Landmines focus on cryptographic proofs established in advance, while the auction concepts introduce competition over an attacker's collateral. In the Staked Auction design, the vulnerable BTC would be burned rather than recovered by its original owner.

For now, Fields' ideas remain an early-stage framework for considering how Bitcoin could respond to future quantum-related security risks. The three mechanisms have been outlined, but further implementation work would be needed before they could become operational. A concrete next step for the concepts would be their development into formal, reviewable specifications; until then, they remain discussion material rather than scheduled network changes.

Source: Hokanews