TL;DR
- Jameson Lopp said he would rather see 5.6 million dormant BTC frozen than risk future quantum attackers seizing them and shocking the market.
- His comments followed BIP-361, a proposal exploring how Bitcoin could phase out quantum-vulnerable signatures and invalidate transactions from wallets that fail to migrate.
- Lopp argued credible evidence of quantum recovery could trigger panic and loss of trust, while critics fear freezing coins would compromise Bitcoin’s ownership guarantees.
Jameson Lopp has revived Bitcoin’s uncomfortable debate by arguing that freezing millions of dormant coins would be preferable to letting quantum attackers seize them if the network’s cryptography is ever broken. What makes the argument so jarring is that it asks Bitcoin to choose between two outcomes it dislikes: intervention or theft. Lopp said he would rather see an estimated 5.6 million BTC, which he believes are lost or dormant, removed from an attacker’s reach than flow to an entity with little concern for the ecosystem. At current prices, that stash is worth roughly $420 billion.
The comments came after the release of BIP-361, a proposal Lopp co-authored that explores how Bitcoin could phase out quantum-vulnerable signatures and, over time, invalidate transactions from wallets that fail to migrate. The proposal is not being presented as a rule change, but as a contingency plan for a threat that could become existential if ignored. Lopp said he does not believe any of this is necessary right now, described the draft as a rough idea rather than a finished specification, and stressed that the goal is to think adversarially before the threat becomes urgent.
Thoughts on BIP-361:
* I know folks don't like it. I don't like it myself. I wrote it because I like the alternative even less.
* It isn't a spec, nor is it proposed for activation. It's a rough idea for a contingency plan that needs more R&D.
* I hope it never needs to be…
— Jameson Lopp (@lopp) April 15, 2026
The Real Fault Line Is Philosophical, Not Just Technical
The scale of what is being discussed explains why the proposal has generated immediate friction. Roughly 28% of all bitcoin has not moved in more than a decade, and Lopp argues that a quantum-enabled recovery of those coins could destabilize both price and trust. He warned that the greater danger is not a large sell-off, but the market panic that could follow signs that vulnerable coins can credibly be recovered with quantum computing. In that scenario, he said, rational holders would likely leave until confidence returns that the chain has been secured against such attacks.
That logic, however, runs into one of Bitcoin’s deepest convictions: ownership should not become conditional. The backlash stems from fear that freezing dormant coins to defend the network could weaken Bitcoin’s core promise of unstoppable money. Lopp acknowledged he does not like the proposal and hopes it never needs to be adopted, yet argued that economic incentives may outweigh philosophical purity in an existential scenario. The result is a debate that no longer feels theoretical, because it forces Bitcoin to confront how far it would go to preserve trust before quantum risk becomes real.
