NY judge pauses case over claims to 40,000 Bitcoin wallets, sets July review of amicus arguing lost-property law doesn’t fit private keys

A New York judge has put on hold a lawsuit aiming to take ownership of nearly 40,000 Bitcoin wallets and scheduled a July hearing to consider a proposed amicus brief. The brief—filed by attorney Ian R. Cohen—contends New York’s lost-and-found statute is the wrong tool to claim “lost” digital assets that remain under the control of private keys.

The core question isn’t about crypto hype; it’s about whether century-old lost-property logic can be stretched to a bearer-style, cryptographic system. That tension matters far beyond this case. If “lost and found” were interpreted to let third parties claim wallets they can’t control cryptographically, self-custody would face legal uncertainty even when the blockchain is clear: control resides with whoever holds the keys.

Here’s the narrow issue I think the court must center on: possession in crypto is not an inference—it’s a mathematical fact. In analog settings, the state often infers possession from physical control or circumstantial evidence. Bitcoin flips that: without the private key, you have no functional power. Trying to swap cryptographic finality for a legal presumption invites conflicts the system is designed to prevent.

Why this matters for market integrity: - Technological layer: A wallet address isn’t an owner; it’s a destination controlled by a private key. Treating an on-chain output as “lost” because it appears dormant ignores how UTXOs, consolidation, and cold storage work. Dormancy is not abandonment. - Business layer: If claimants could use lost-property statutes to seize “inactive” wallets, custodians, exchanges, and miners would face contradictory duties—respect key-based control vs. honor court-ordered reallocations based on inactivity heuristics. That’s operationally brittle and invites forum-shopping. - Behavioral layer: Some actors may see “finders-keepers” narratives and start canvassing dormant addresses for legal capture. That incentives surveillance over service, and it undermines the established norm that signing a message or moving a dust output is how liveness is proved—not a court petition. - Ethical layer: Reassigning assets without cryptographic proof risks punishing legitimate cold-storage holders and heirs managing probate. It also tempts claimants to sweep widely—nearly 40,000 wallets here—because identity and intent are murky on-chain.

The proposed amicus approach—arguing that New York’s lost-and-found statute does not apply to assets controlled by private keys—tracks how many practitioners already operate. Lost property doctrine evolved for physical objects where control is practical but ownership is uncertain. In crypto, control is provable but identity can be uncertain. That inversion means you need rules tailored to the medium, not a retrofit that presumes possession from anything but keys.

Pragmatically, courts have other tools when misconduct is alleged: fraud, theft, conversion, or constructive trust theories with fact-specific evidence. Those routes require demonstrating wrongful acts and link assets to parties; they don’t shortcut the question of control. Using a lost-and-found statute to bypass cryptographic possession tries to solve attribution with a blunt instrument and could backfire across legitimate self-custody.

What industry participants can do while this plays out: - Maintain clear protocols to establish control (message-signing, dust movements) when appropriate in disputes, without exposing security hygiene. - For estates and institutions, document custody arrangements and recovery procedures to avoid ambiguity that fuels “lost” claims. - Educate clients that inactivity is not abandonment and that moving long-held coins solely to signal liveness can create unnecessary risk.

The judge’s decision to stay the case and hear the amicus in July is a sensible pause. It gives the court space to weigh whether traditional lost-property frameworks can be reconciled with private-key architecture. If the court accepts the amicus view, it won’t settle every crypto property dispute, but it would draw a clearer line: absent keys or specific wrongdoing, dormancy is not a legal vacuum to be filled by statute.