Live feed · Ethereum mainnet

USDT and USDC blacklist tracker: every frozen address, live

Tether and Circle can freeze any address that holds their stablecoin, usually after a hack, a scam or a sanctions order. This free live feed posts every USDT and USDC freeze on Ethereum, every unfreeze and every destroyed balance, the moment it is confirmed.

Set this alert for yourself

Free · within seconds of confirmation

Examples

What a blacklist post looks like

Each post is one event from the token contract, with the amount and the transaction. The cards show the wording; the real posts are in the channel.

FreezeExample

0x3C44…93BC

0x3C44…93BC was blacklisted by Tether (USDT frozen)

Ethereum · USDTAddedBlackList

DestroyedExample

1,250,000 USDT

0x3C44…93BC

Tether destroyed 1,250,000 frozen USDT of 0x3C44…93BC

Ethereum · USDTDestroyedBlackFunds

UnfreezeExample

0x90F7…b906

0x90F7…b906 removed from the USDT blacklist

Ethereum · USDTRemovedBlackList

Example cards. Every real event is posted to the Telegram channel within seconds of confirmation.

What the feed posts

Every event, per stablecoin

One post per event, from the token contract itself. Ordinary transfers never reach the feed.

Tether (USDT)

0xdac17f958d2ee523a2206206994597c13d831ec7

Tether freezes an addressAddedBlackList
The address goes on the USDT blacklist and can no longer send its USDT.
Tether unfreezes an addressRemovedBlackList
The address comes off the blacklist and can move its USDT again.
Tether destroys frozen USDTDestroyedBlackFunds
The frozen balance is wiped and the USDT supply falls by that amount.

USD Coin (USDC)

0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48

Circle freezes an addressBlacklisted
The address can no longer send or receive USDC.
Circle unfreezes an addressUnBlacklisted
The address can use USDC again.

Why follow it

Why people follow it

Act on a freeze early

See the blacklisting when the block is confirmed, not hours later in the news.

Check your counterparties

Know when an address you deal with is frozen, and stop sending to it.

Only blacklist events

Freezes, unfreezes and destroyed funds only, never ordinary transfers.

Explained

What is the USDT blacklist?

The USDT contract on Ethereum keeps a list of addresses Tether has frozen. Tether adds an address with an AddedBlackList event; from then on the address cannot send its USDT. Tether can later remove it (RemovedBlackList) or destroy the frozen balance outright (DestroyedBlackFunds), which wipes the tokens and lowers the supply.

Tether freezes addresses linked to hacks, scams and sanctions, often at the request of law enforcement. The contract records that a freeze happened, never why.

Explained

How Circle freezes USDC

Circle's USDC contract has its own blacklist, run by a blacklister address Circle controls. A Blacklisted event means the address can no longer send or receive USDC; UnBlacklisted lifts it. USDC has no destroy step: the balance stays frozen in place.

Explained

How to check if a USDT or USDC address is frozen

You don't need a third-party checker: the token contract answers the question itself, for free, on Etherscan.

1For USDT, open the TetherToken contract on Etherscan (0xdac17f958d2ee523a2206206994597c13d831ec7), go to Contract, then Read Contract.
2Find isBlackListed (capital L), paste the address and click Query. true means the address is frozen.
3For USDC, open the USDC contract (0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48), go to Contract, then Read as Proxy.
4Find isBlacklisted, paste the address and click Query. true means the address is frozen.

The answer is for Ethereum only. A USDT address on Tron has its own, separate blacklist.
A clear result is a snapshot. To know the moment it changes, set an alert on that address (below).
If your exchange shows your USDT as frozen but the contract says false, the hold is on the exchange's side, not Tether's.

Explained

Why follow stablecoin freezes

A freeze is one of the few public signs that an issuer has acted on a hack, a scam or a sanctions case.

Security teams and researchers see which addresses an issuer has acted on, often while an exploit is still in the news.
Exchanges, OTC desks and payment apps learn when a counterparty can no longer move its stablecoins.
Anyone who received funds from a hacked protocol can watch for the addresses involved.

Your own alert

Want it in your own chat?

The feed posts everything. Open the ready-made rule: the address, the events and the conditions are filled in. Add a minimum amount if you like, click Create, and only what matters to you reaches your Telegram.

Ready-made ruleTether (USDT)

Ready-made ruleUSD Coin (USDC)

How it works

How the feed works

01
Our worker reads only these contracts and these events, nothing else.
02
Within seconds of confirmation it posts the event to the public channel.
03
Every post links to the transaction, so you can check it yourself.

FAQ

Frequently asked questions

Where does the data come from?

Every post comes from the token contract's own event on Ethereum mainnet, read within seconds of confirmation, with a link to the transaction on Etherscan. The contracts are TetherToken for USDT (0xdac17f958d2ee523a2206206994597c13d831ec7) and Circle's USDC proxy (0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48).

How do I check if my USDT address is frozen?

On Etherscan, open the USDT contract, go to Read Contract and query isBlackListed with your address: true means frozen. For USDC, use Read as Proxy on the USDC contract and query isBlacklisted. Both answers cover Ethereum only.

Can I get an alert if one specific address is frozen?

Yes. Set the same rule for yourself from the template on this page and add a condition, such as a minimum amount or one address. The free Beta plan covers one contract and needs no card. Add a condition on the address and you get one alert if it is ever frozen or unfrozen.

Can frozen USDT be unfrozen?

Yes, if Tether removes the address from the blacklist (a RemovedBlackList event, posted to the feed). If Tether destroys the frozen balance instead (DestroyedBlackFunds), those tokens are gone from that address.

Does a freeze mean the address belongs to a criminal?

No. It means the issuer froze it. The feed states the event, not the reason.

Does the feed cover Tron and other chains?

Ethereum mainnet only. USDT and USDC also live on other chains (Tron, Solana and more), and each chain has its own contract, supply and blacklist. These feeds do not cover them.

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