Salomon Brothers has launched a $285 billion lawsuit targeting the owner of Bitcoin address 1LwWt — a wallet tied to early Satoshi-era coins. The investment bank served its legal notice in a highly unusual way: it embedded the court order directly on the Bitcoin blockchain using the OP_RETURN field. The move skirts traditional service methods and forces a new question: can a court reach an anonymous holder through the ledger itself?
The $285 billion target
The address in question, 1LwWt, has long been associated with coins mined in Bitcoin's earliest days — the kind of stash that hasn't moved in over a decade. Salomon Brothers claims it has a claim worth $285 billion against the owner. That figure dwarfs most crypto lawsuits and puts the value of the contested wallet somewhere in the nine-figure range, though no official breakdown has been released.
The legal notice was issued via OP_RETURN in July 2025. It gave the address's owner until November 5, 2025, to come forward and prove ownership. That deadline has now passed without any public statement from either party.
Why OP_RETURN matters
OP_RETURN is a Bitcoin script opcode that allows users to attach a small amount of arbitrary data to a transaction. It's usually used for things like verification messages or asset issuance — not legal summons. By encoding the court notice there, Salomon Brothers created a tamper-proof timestamp and a public record that anyone can verify on-chain.
It's a creative workaround for a basic problem: how do you sue someone you can't identify? Standard service by mail or publication doesn't work when the defendant's only known identifier is a string of 34 characters. Putting the notice on the blockchain ensures it's seen by anyone monitoring that address — and it creates a clear paper trail for the court.
Legal experts following the case say the tactic is novel but untested. No U.S. court has ruled on whether blockchain-based service satisfies due process. If the owner of 1LwWt never responded — and no evidence suggests they did — the court will have to decide if the OP_RETURN notice counts as valid service.
A deadline with no answer
The November 5, 2025, deadline came and went. As of this week, the Bitcoin address remains dormant. No movement, no response, no legal filing from the unidentified holder. The lawsuit itself hasn't been dismissed, so it's still active in the system — just stalled.
That puts the ball back in Salomon Brothers' court. They'll need to ask the judge for a default judgment or some other remedy. But getting a default judgment against an anonymous defendant who may not even know they've been sued is a whole other challenge. The case is a test of whether old legal procedures can stretch to fit a pseudonymous blockchain world.
The crypto community is watching closely — not just for the money, but for the precedent. If the court accepts the OP_RETURN notice as valid, it could open the door to a new era of on-chain legal service. If it doesn't, the $285 billion question stays unanswered.
