Module summary
- USDT is a dollar-linked stablecoin issued by Tether, which says each token is backed by reserve assets.
- The same token exists on several blockchains; sender and receiver must use the same network.
- Risks include reserve quality, rare depegs, address freezes by the issuer and irreversible transfer errors.
What is USDT in practical terms? It is a token that aims to be worth one US dollar, issued by the company Tether and used across crypto markets as a stand-in for dollars. Traders price other coins against it, park funds in it between trades and send it across borders. Understanding how it keeps its value, and how it can fail to, is essential before relying on it.
How USDT is created and redeemed
New USDT is issued when approved customers of Tether deliver dollars or equivalent assets, and it is destroyed when tokens are redeemed for dollars. Those primary customers are typically large firms; ordinary users buy and sell USDT on trading platforms from other holders. Arbitrage between the two keeps the market price near one dollar: if USDT trades below a dollar, firms that can redeem have a reason to buy it cheaply and hand it back at par.
Tether states that its tokens are backed by reserves, largely short-term US government debt and cash equivalents, along with other assets. It publishes periodic reserve reports prepared by an accounting firm. Those reports are attestations at a point in time rather than a full audit, a distinction worth knowing when you read claims about backing.
Networks: one token, many chains
USDT is not tied to one blockchain. The same token is issued on several networks, and each version lives only on its own chain.
| Network label | Blockchain | Address format | Practical note |
|---|---|---|---|
| TRC20 | Tron | Starts with T | Often used for low-cost transfers between platforms |
| ERC20 | Ethereum | Starts with 0x | Widely supported by wallets and applications; fees vary with network demand |
The rule that prevents most losses: the sending and receiving side must use the same network. A platform that only credits ERC20 deposits will not see a TRC20 transfer, and there may be no way to retrieve it. Other networks carry USDT too, and each follows the same principle.
A safe transfer routine
- On the receiving side, choose the network first, then copy the deposit address it shows.
- On the sending side, select the identical network and check the address format matches.
- Compare the first and last several characters of the pasted address with the original.
- For a new destination, send a small test amount and wait for it to arrive.
What USDT is used for
- Quote currency. Many trading pairs are priced in USDT, such as BTC/USDT.
- Waiting room. Traders move into USDT to step out of volatile coins without leaving the crypto system.
- Transfers. Moving value between platforms or across borders, often faster than bank transfers.
- Collateral. Crypto derivatives platforms frequently accept or settle in USDT.
How USDT fits alongside other coins is covered in the crypto module.
The risks behind the peg
Depeg risk
Stablecoins can slip below their target in stressed markets. With illustrative numbers: 10,000 USDT sold at $0.997 returns $9,970, a $30 difference before fees. Small wobbles like that have occurred during market stress; larger breaks have happened to other stablecoins. The peg is a mechanism, not a guarantee.
Issuer and reserve risk
USDT is only as good as the assets behind it and the issuer's ability to honour redemptions. That is a concentrated dependency on one company, its banking partners and its reserve management.
Freeze risk
Unlike bitcoin, USDT is controlled by a smart contract its issuer can administer. Tether can freeze tokens held at specific addresses, and has done so, for example following law enforcement requests or thefts. That can help victims of crime, but it also means your balance is subject to the issuer's decisions.
Regulatory risk
Stablecoin rules are tightening. In the EU, stablecoin issuers need authorisation under MiCA, and which stablecoins EU-regulated platforms can offer depends on that status. Availability can therefore differ by country.
USDT in scams
Because it moves quickly and holds a steady value, USDT is a favourite of fraudsters: fake investment platforms that ask for USDT deposits, "customs fees" demanded before a withdrawal, and address-poisoning attacks that plant a lookalike address in your history. The scam module shows how each works. If an unsolicited contact asks you to send USDT anywhere, stop.
Types of stablecoin and where USDT sits
Stablecoins follow three broad designs. Fiat-backed stablecoins, including USDT, are issued by a company that holds reserves such as cash and government debt. Crypto-collateralised stablecoins are created by smart contracts against deposits of other crypto-assets, typically worth more than the stablecoins issued, to absorb price swings. Algorithmic designs try to hold a peg with supply rules rather than full reserves, and some have failed completely. The design determines which risks you carry: an issuer and its bank accounts for fiat-backed coins, smart-contract and collateral risk for the second group, and the soundness of the mechanism itself for the third.
Checking a transfer on a block explorer
Every USDT transfer leaves a public record on its network. After sending, the platform or wallet shows a transaction ID, often called a hash. Pasting it into a block explorer for the correct network shows the sending and receiving addresses, the token and amount, the fee paid and the number of confirmations. This is the evidence to share with a platform if a deposit has not been credited. It is also a quick way to confirm that you really did use the network you intended. Remember that explorers are public: anyone can see the balance and history of an address once they know it.
Questions from readers
Is USDT the same as a US dollar?
No. USDT is a token that aims to track the dollar and is backed by the issuer's reserves. It carries issuer, reserve and freeze risks that a bank deposit does not, and it is not covered by deposit insurance.
What happens if I send USDT on the wrong network?
The tokens usually arrive at an address on a different blockchain that the recipient's platform does not monitor. Recovery depends entirely on the recipient's willingness and technical ability, and is often impossible.
Why is USDT sometimes priced at 0.999 or 1.001?
Market prices on platforms move with supply and demand. Arbitrage by firms that can create and redeem USDT normally keeps the price very close to one dollar, but small deviations are common.
Sources
- Tether, published reserve reports and terms of service
- EU Markets in Crypto-Assets Regulation (MiCA), rules for e-money tokens