From public reporting. This is a real case, not Chainsentra's own work. It's included to show how blockchain intelligence — the same kind of tracing Chainsentra does — supports real investigations. Outcomes vary by case.
In June 2025, federal prosecutors in Washington, D.C. filed a civil forfeiture complaint seeking approximately $225,364,961 in USDT, the Tether stablecoin. The money had been traced to seven wallets connected to pig butchering investment fraud, and it became, according to officials, the largest cryptocurrency seizure in the history of the US Secret Service.
How did the investigation start?
The case didn't begin with a single victim's report. It began with Tether's own compliance and investigations team.
In 2023, Tether and the exchange OKX identified a pattern: more than 144 accounts on OKX could be traced back to deposits originating from pig butchering schemes — the long-running romance-and-investment fraud where a fraudster builds a relationship with a target before steering them to a fake trading platform. Tether notified the US Secret Service of what it had found.
From there, investigators spent roughly two years following the trace: watching where deposits across those accounts converged, which exchange wallets the funds moved through, and which addresses ultimately held the proceeds. That work narrowed a sprawling web of victim deposits down to seven wallets holding the targeted $225 million.
What does "civil forfeiture" actually mean?
It's worth being precise about what the June 2025 filing was. A civil forfeiture complaint is not a criminal conviction, and it's not the government physically repossessing cash from a named defendant's hands. It's a legal filing asking a court to rule that specific property — in this case, USDT held in specific wallets — is the proceeds of crime and should be forfeited to the government.
| Step | What happens | Who decides |
|---|---|---|
| Tracing | Blockchain analysts link deposits to a common set of wallets | Tether, OKX, Secret Service analysts |
| Freeze | Tether freezes the USDT in the identified wallets | Tether, acting on information from investigators |
| Filing | Prosecutors file a civil forfeiture complaint in court | US Attorney's Office |
| Forfeiture | A court rules on whether the funds are proceeds of crime | A federal judge |
| Disposition | Forfeited funds may eventually be distributed through a victim remission process | DOJ, following court rules |
Reporting on the case notes that Tether burned the frozen USDT on-chain after the freeze — permanently removing those tokens from circulation — while the forfeiture complaint proceeded through the courts. That burn secures the funds; it doesn't by itself decide who ends up with them.
Why does a stablecoin keep showing up in these cases?
USDT appears again and again in pig butchering investigations, and this case is a clear example of why. Fraud operators prefer a stablecoin because its value doesn't swing the way bitcoin or ether can, which makes it simpler to move large, round-looking sums between victim deposits, mixing layers and cash-out points.
The same stability that makes USDT convenient for fraud operators also makes it easier for Tether itself to act: because Tether is the issuer, it can freeze and burn tokens at specific addresses once investigators show it where the proceeds sit. That's a different kind of control than exists for bitcoin, where there's no central issuer to ask for a freeze — which is part of why so many recent fraud-related seizures involve USDT specifically, and why tracing a case often means following funds until they land in a stablecoin an issuer can act on.
What this case shows about how tracing actually works
A few things stand out if you compare this case with how a Chainsentra investigation runs:
- It took time. Tether flagged the pattern in 2023; the forfeiture complaint wasn't filed until June 2025. Tracing a complex, multi-victim network through hops and exchange accounts is not instant.
- It depended on cooperation. Tether, OKX and the Secret Service each held one piece: Tether and OKX had the transaction data and freezing power; the Secret Service had investigative and legal authority. Neither could have acted alone.
- It started with pattern recognition, not a single report. Rather than investigating one victim's loss in isolation, analysts noticed that many separate deposits converged on the same wallets — the same kind of attribution work that links separate victim reports in a Chainsentra investigation.
What this means if you've lost crypto to a similar scheme
This case is encouraging in one sense: it shows that large, well-organised pig butchering networks can be traced and that the money doesn't simply vanish once it moves. But it's also a reminder of the scale involved — $225 million moved through just seven wallets before anyone outside the fraud network knew where it was.
Chainsentra's role in a case like this is tracing and documentation, not seizure. An investigation follows your funds, attributes the addresses they passed through, and produces an evidence report that police, prosecutors or an exchange's compliance team can act on — the same kind of material that underpins a case like this one. What a court or an exchange ultimately does with that evidence is their decision, not Chainsentra's, and no outcome is promised.
If you've sent crypto to what you now believe was a fake investment platform, the single most useful thing you can do is preserve your records — transaction hashes, the platform's wallet addresses, and every message you exchanged — and get them in front of an investigator. A free assessment will tell you honestly whether your case is traceable before anything is paid.
Key takeaways
- A $225 million USDT forfeiture complaint, filed in June 2025, is the largest crypto seizure in US Secret Service history and stemmed from pig butchering fraud.
- The case began with Tether and OKX noticing a pattern across more than 144 accounts in 2023, not a single victim's complaint.
- Civil forfeiture is a court process; freezing funds is a first step, not a final outcome.
- Stablecoins like USDT are common in these cases partly because an issuer can freeze and burn tokens once investigators identify the wallets involved.
- Chainsentra traces funds and documents evidence; courts, prosecutors and exchanges decide what happens to seized assets.
Further reading
- Pig butchering: how the fraud works
- A related freeze: the APAC pig butchering case
- How tracing works
- Start a free assessment
Sources: TRM Labs, Decrypt and The Block, June 2025.