On-chain investigator ZachXBT traced roughly $120 million in funds laundered through Monero (XMR), instant swap services, and cross-chain bridges. Tether subsequently cooperated with law enforcement to freeze about 72 million USDT of that amount. During the episode, XMR’s price was briefly pushed up to around $430. CoinDesk’s June 12 report walks through this “on-chain laundering maze”: funds were first converted into the privacy coin Monero to break the trail, then the remainder was dispersed across multiple centralized exchanges and cross-chain assets. This is one of Tether’s larger single blacklist freezes in recent years.
One thing needs clarifying up front: Tether isn’t freezing “USDT the token” — it’s freezing the balance sitting in specific wallet addresses. As the issuer of USDT, Tether holds addBlacklist authority over its own smart contract. Once an address is blacklisted, the USDT held there can no longer be transferred out — effectively frozen in place. This is the biggest structural difference between USDT and decentralized stablecoins, and it’s the core mechanism behind this news. For the exact policy language, refer to Tether’s official transparency page.
What This Means for USDT Card Users
The bottom line first: balances belonging to U-card users who deposit and spend normally are not affected by events like this. Freezes are address-level and targeted — Tether does not, and cannot, “freeze everyone indiscriminately.”
That said, the “source” of funds is a variable every U-card user should take seriously. Here’s a breakdown across three user profiles:
| User Profile | Risk Level | Notes |
|---|---|---|
| Exchange withdrawal → deposit to U-card | Low | Funds pass through the exchange’s KYC layer with a clear trail, and almost never intersect with blacklist logic |
| OTC / peer-to-peer purchase → deposit | Medium | If the counterparty’s USDT happens to originate from a flagged address, it could be blocked by the issuer’s risk controls at deposit time |
| Receiving USDT from an unfamiliar address | High | With no way to confirm the funds are clean, this is the main scenario for “guilt by association” flagging |
For users holding an Asia-route virtual card like MPCard, the issuer typically already runs on-chain risk screening at the deposit stage — which actually acts as a safeguard: tainted funds get blocked before they ever reach your card balance, rather than being frozen after the fact. RedotPay and Bybit Card route through exchange / licensed channels with similar logic.
Reasonable expectations within the time window:
- Within 7 days: Funds in the frozen addresses remain locked; exchanges cooperating with the investigation may temporarily tighten withdrawals on some related addresses. Ordinary users see no impact on deposits or spending.
- Within 30 days: Some issuers may modestly tighten risk thresholds for large on-chain deposits, making OTC-sourced deposits more likely to trigger manual review.
- Within 90 days: Barring new enforcement action, market attention fades, and the practical impact on retail U-card users approaches zero.
Historical Comparison: What’s the Same, What’s Different
Tether freezing addresses is nothing new. Since 2022, Tether has cooperated with the U.S. OFAC and law enforcement agencies worldwide on multiple occasions, freezing flagged wallets ranging from single-digit millions to tens of millions per case. What’s the same as those precedents: freezes are address-level, target illicit funds, and occur while the USDT balance is still sitting in the flagged address.
What’s different this time is the “Monero relay” playbook. Most past laundering routes moved across transparent chains (Ethereum / Tron), where investigators like ZachXBT could track the entire path. This time, the funds were first converted into a privacy coin to break traceability, then converted back into USDT — the intent was to shake off tracking, but the moment they converted back into USDT, they fell back into range of Tether’s freeze capability. This precisely demonstrates: as long as funds eventually return to a centralized stablecoin, freezability reappears. This is a fundamentally different kind of event from USDC’s brief depeg during the Silicon Valley Bank crisis in 2023 — that was a price fluctuation caused by reserve risk, whereas this is the issuer actively exercising a contractual power, with zero price movement involved.
Compliance Boundaries: Clearly Prohibited vs. Gray Areas
For ordinary users, the legal boundary is actually quite clear:
- Clearly prohibited: Knowingly receiving or transferring proceeds of crime, or assisting in mixing/laundering — this is a criminal matter, unrelated to which card is used.
- Gray area: Buying USDT through unverified OTC channels, or receiving transfers from unfamiliar addresses. You may not have subjective criminal intent under the law, but once funds get flagged, you could face a frozen balance or issuer risk-control blocking, and the burden of proof falls on you.
- Clearly permitted: Exchange withdrawals, clearly-labeled transfers between friends and family, and legitimate merchant payments.
Different jurisdictions take very different stances on stablecoins — it’s worth checking local rules before requesting a card or making a deposit: Singapore compliance guide, Japan compliance guide, Hong Kong compliance guide. Users planning to hold large USDT balances long-term should pay particular attention to local requirements around stablecoin custody and anti-money-laundering rules.
Key Developments Worth Watching
- ZachXBT’s follow-up tracking: The whereabouts of the remaining roughly $48 million (of the $120 million total, minus the $72 million frozen) that hasn’t been frozen — this could trigger a new round of exchange cooperation.
- Updates to Tether’s transparency page: Watch Tether’s transparency page for whether it publishes specific address details related to this freeze.
- Major exchange risk-control announcements: Whether any exchanges announce tightened OTC / P2P channels within 30 days.
- How fast XMR’s price retreats: If this price anomaly is directly tied to the laundering relay, the pace of its retreat may reflect how the remaining funds are being handled.
Editorial Recommendations
- Users normally using MPCard, Bybit Card, or RedotPay: no action needed. Your balance is not sitting in any flagged address, and this freeze has nothing to do with you.
- Users who habitually buy coins through OTC channels to fund their cards: Prioritize exchange withdrawals with a clear source, and keep deposit records. If risk controls flag you over the source of funds, that record is your strongest evidence. To understand the basic logic of U-card deposits and fund sourcing, read What Is a U-Card.
- Everyone: Don’t accept direct USDT transfers from unfamiliar addresses just to save on fees. This is the scenario most likely to get you flagged by association, and the fees saved come nowhere close to covering the risk of a frozen balance.
- To compare which cards have sturdier risk control and compliance practices, see Top 5 USDT Virtual Cards of 2026.
At its core, this event is a public demonstration of USDT’s centralized nature: the fact that it can be frozen is bad news for launderers, but for rule-following ordinary users, it’s actually an invisible safety net.