Tether can freeze USDT at the address level, and it's doing so at scale. BlockSec data reported by CoinMarketCap counted $514 million in USDT frozen across 370 addresses in a single 30-day window: 328 addresses on Tron holding about $505.9 million, and 42 on Ethereum holding about $8.7 million. Across 2025, Tether blacklisted 4,163 addresses on the two chains and froze $1.26 billion.
A frozen address can't send USDT. It can still receive it, and that's the trap: on Ethereum, Tether's contract only checks whether the sender is blacklisted, so USDT you send to a frozen address arrives and then sits there, stuck. If you trade USDT peer to peer, take it as payment, or are about to send it to an address someone gave you, a one-minute check avoids both problems.
TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t. Check it character by character; copycat tokens use lookalike names.0xdAC17F958D2ee523a2206206994597C13D831ec7.A balance showing in a wallet app doesn't mean it can be spent. The wallet only reads the balance; the contract decides whether it can move.
A freeze isn't the only way a USDT payment can turn out to be worthless. Scammers create tokens named "USDT" or "Tether" with the same logo and send them to victims, and some wallets show them right next to the real thing. Before you treat a payment as received, open the transaction on Tronscan or Etherscan and confirm the token contract is the official one: TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t on Tron, 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Ethereum. Anything else is not Tether's USDT, whatever the wallet calls it.
Tether freezes addresses it links to hacks, scams and sanctioned activity, often after a request from law enforcement. An address that receives stolen or scam funds can be frozen too, even if its owner didn't know where the money came from. Most freezes happen on Tron, where much of the world's peer-to-peer USDT trading takes place.
Once an address is frozen, Tether can wipe its balance with a contract function called destroyBlackFunds. BlockSec found that about $698 million of frozen USDT was destroyed this way.
Reversals are rare: BlockSec found only 3.6% of blacklisted addresses were ever taken off the list. Only Tether can review a freeze, so if you believe yours is a mistake, contact Tether support with the transaction history that shows where your funds came from.
Ignore anyone who offers to unfreeze USDT for a fee. Nobody outside Tether can change the blacklist, and these offers are a well-known follow-up scam aimed at people who have just been frozen.
Open the official USDT contract on Tronscan (TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t) or Etherscan (0xdAC17F958D2ee523a2206206994597C13D831ec7), go to Contract and then Read Contract, and query isBlackListed with the address. false means it is not frozen; true means it is.
On Ethereum, yes. Tether's contract only checks whether the sender is blacklisted, so USDT sent to a frozen address arrives and is then stuck. Check the destination before you send, on either chain.
Rarely. BlockSec found only 3.6% of blacklisted addresses were ever removed from the list. Only Tether can review a freeze; anyone else offering to unfreeze funds for a fee is running a scam.
Tether freezes addresses it links to hacks, scams or sanctioned activity, often after a request from law enforcement. An address can also be frozen after receiving funds that came from one of those sources.
Most freezes happen there. In one recent 30-day window, 328 of the 370 frozen addresses, holding about $505.9 million of the $514 million total, were on Tron, which is where most USDT trading, including P2P and scam flows, takes place.
No. They have no issuer and no freeze function. A custodial exchange can still freeze an account it holds for you, so keep coins you want to control in your own wallet.
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