Bitcoin’s eventual migration to post-quantum cryptography is opening a more contentious question than the upgrade itself: what to do about roughly 1.7 million early coins, including Satoshi-era holdings, that sit in old output types and may never be moved. As that scenario moves from theory toward policy debate, institutions, developers and ideological Bitcoiners are lining up around very different answers.
Institutions and Maxis Split on a Freeze Fork
Founding partner at Castle Island Ventures Nic Carter argued in a X post on Thursdaythat the “Overton window moved quickly” on quantum risk. In his telling, the debate is no longer whether Bitcoin will need a post-quantum transition, but how that transition will be managed and what happens to untouched legacy coins once elliptic-curve signatures are no longer safe. He sketched a likely path: an interim period after a soft fork where users can migrate from current ECDSA and Schnorr signatures to post-quantum schemes, followed by a stage where vulnerable signatures are disallowed entirely.
That framework pushes the hardest issue into full view. Carter said a “massive debate will erupt” over the fate of 1.7 million p2pk outputs that did not migrate, describing the dispute as “extremely fraught” because both sides have “strongly held and completely reasonable” views. On one side are institutions, custodians and fiduciaries, for whom a freeze is the practical answer. Their concern is straightforward: if a cryptographically relevant quantum computer can recover long-dormant coins, Bitcoin could face severe volatility, not just from the sudden circulation of a huge stock of BTC but from the uncertainty around who controls it and what they intend to do.
Carter expects that logic to carry real market weight. “Either delist and completely forego all revenue pertaining to Bitcoin asset management products, or ensure that Bitcoin adopts a freeze fork,” he wrote of institutional decision-makers. He added that most custodians, exchanges and asset managers would likely precommit to honoring only a freeze fork, because “a world where 1.7m+ BTC end up in the hands of a potentially hostile actor is unacceptable” for firms managing client money. Pieter Wuille, one of Bitcoin Core’s most influential developers, has also publicly backed that general principle, saying, “Of course they have to be confiscated. If and when … the existence of a cryptography-breaking QC becomes a credible threat, the Bitcoin ecosystem has no other option than softforking out the ability to spend from signature schemes … that are vulnerable to QCs.”
The opposition is less concerned with portfolio risk than with precedent. Carter grouped “hardcore Bitcoin maxis, some developers, ideologues” into a do-not-freeze camp that sees any selective intervention as a break with Bitcoin’s core rules. Their case is that Satoshi set the monetary parameter at 21 million, lost or dormant coins are still valid coins, and protocol-level confiscation would amount to an irregular state change of the sort Bitcoin has historically rejected. In that view, even if an attacker eventually recovers old coins, absorbing the consequences is preferable to changing the network’s foundational contract.
That clash maps onto a familiar Bitcoin fault line, though Carter argues the power balance has changed since the blocksize wars. In 2017, the social layer beat back corporate preferences through the UASF-era fight over SegWit and 2x. But Carter says “2026 is simply not 2017,” because a much larger share of BTC now sits inside ETFs, public companies, custodians and asset managers. He also contends the freeze side has a stronger economic case than large-block advocates did, and no shortage of developers willing to build the necessary fork.
His base case is that economic nodes win cleanly. Large issuers and custodians, he wrote, may decide early that supporting only one chain is the only way to avoid a destructive split, particularly for ETF structures that would struggle to handle two competing versions of Bitcoin. “Most people are not willing to let their nest egg and savings go to zero for the sake of ideological purity,” Carter said, framing the outcome as less a philosophical victory than a practical response to concentrated institutional ownership.
A Legal Salvage Path Offers a Third Option
Carter’s more unusual proposal is what he called a “secret third thing”: a legal salvage framework that avoids both a freeze fork and an unrestricted quantum grab. The premise depends on one condition he sees as plausible — that a U.S.-based firm wins the race to a cryptographically relevant quantum computer. If that happens, he argues, the firm could work with the U.S. government to recover vulnerable coins lawfully, not as owner but as a court-appointed custodian or receiver.
He drew the analogy to maritime salvage. “They do not obtain ownership of these coins, but are rather appointed by a court as a neutral receiver or court-authorized custodian, tasked with securing and returning the assets to their rightful owners where possible and otherwise holding them in trust pending judicial disposition,” Carter wrote. “This is analogous to the concept in maritime law of ‘salvor-in-possession,’ in which a salvage firm recovers property from a vessel in peril and obtains a court-determined salvage award but not ownership of the recovered assets.” In his scenario, recovered BTC would be moved to court-controlled addresses, while claimants would try to establish ownership through conventional evidence tied to mining activity from 2009 or 2010.
That route, Carter said, is more plausible than a pure “law of finds” outcome where the first party to seize abandoned property keeps it. He argued U.S. courts generally require affirmative relinquishment for abandonment, something that likely does not exist for Satoshi’s holdings. The salvage analogy, while imperfect, is meant to show how courts might treat old Bitcoin as imperiled property rather than ownerless property, especially if rival quantum-capable actors are racing to sweep the same outputs.
The unresolved piece is what happens to coins that no one successfully claims. Carter suggested they could ultimately be escheated to the state, though he acknowledged the jurisdictional and liability issues would likely push the matter to a federal level. His own expectation is that the coins would end up with the U.S. Treasury, potentially inside a strategic reserve structure, while remaining theoretically claimable if a legitimate owner later emerged. That would keep the coins off the market and preserve Bitcoin’s protocol rules, even if it introduces the state directly into one of the asset’s most sensitive fault lines.
Carter was explicit that this is not the “most cypherpunk outcome,” but he presented it as preferable to a freeze because “if Bitcoin really does freeze the coins, then something about Bitcoin will truly have died.” Still, he ranked a freeze above a no-freeze scenario in which hostile quantum recovery proceeds unchecked. The significance of that hierarchy is less in the policy preference itself than in what it says about where the debate is heading: Bitcoin may soon have to choose not whether quantum risk matters, but which compromise it can live with.
For markets and builders, that suggests the real contest is no longer confined to cryptography. It now touches exchange policy, ETF design, legal process and the balance of power between Bitcoin’s social layer and its increasingly institutional ownership base. If post-quantum migration becomes a live engineering agenda, the fight over Satoshi-era coins may prove to be the governance test that defines the next phase of Bitcoin’s maturity.
What began as a technical discussion about post-quantum signatures is turning into a broader argument about property rights, market structure and Bitcoin’s political center of gravity. Whether the network moves toward a freeze fork or some legal salvage framework, the treatment of dormant early coins is shaping up as one of the most consequential debates Bitcoin has faced since the blocksize era.
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