Tether
Tether is the issuer of several asset-referenced tokens, of which the largest is the US-dollar-denominated USD₮ or USDT. USDT is a centralized fiat-referenced stablecoin: tokens circulate on public blockchains, while approved Tether entities control primary issuance, redemption and administrative functions. The token targets a value of one US dollar, but its market price can depart from that value and holding it is not the same as holding an insured bank deposit.
History
The project was announced in 2014 as Realcoin by Brock Pierce, Reeve Collins and Craig Sellars and was renamed Tether later that year. The first tokens used Omni Layer, a token protocol built on the Bitcoin blockchain. Tether later issued tokens on networks including Ethereum, TRON and Solana.[1]
Tether and the Bitfinex exchange have common ownership and management through the iFinex group. This relationship became important in later regulatory cases concerning transfers between the companies and representations about reserves.[2]
Tether has also issued euro-referenced EUR₮ (EURT) and gold-referenced Tether Gold (XAU₮ or XAUT). Those products have different reserve assets, terms and tickers and should not be treated as interchangeable with USDT.
Issuance, networks and redemption
At primary issuance, an eligible verified customer transfers accepted funds to Tether and receives newly issued tokens under the company's terms. Redemption reverses that relationship: tokens are returned or destroyed and the customer receives assets according to the applicable terms, fees, minimums and compliance checks. Most holders instead acquire and dispose of USDT on exchanges or through other users and do not have a direct contractual redemption account with Tether.
USDT on different blockchains represents obligations of the issuer but uses different token contracts. Sending to an unsupported network or address can cause permanent loss. Tether can issue, destroy, freeze or blacklist tokens where a network's contract permits it. Its February 2026 terms allow suspension of services and freezing or blacklisting in specified legal, compliance and risk circumstances.[3]
These controls distinguish USDT from a censorship-resistant native asset. They can help Tether respond to stolen funds or law-enforcement requests, but they also create issuer, legal and key-management dependencies.
In 2024 Tether stopped minting USDT on Omni, Bitcoin Cash's SLP, Kusama, EOS and Algorand. In September 2025 it ended direct issuance and redemption on those five networks. After community feedback the company said it would not freeze the corresponding contracts, so existing holders could continue on-chain transfers, but the deployments were no longer officially supported. A token remaining transferable is therefore not the same as the issuer maintaining primary redemption on that chain.[4]
Reserves and reporting
Tether states that reserves back issued tokens and publishes asset breakdowns and independent assurance reports. “Backed” does not mean that every token is matched by a dollar in a bank account: reported reserves have included Treasury securities, reverse-repurchase agreements, money-market funds, precious metals, bitcoin, secured loans and other investments. Reserve composition affects liquidity, market and counterparty risk.
Quarterly reserve attestations examine a management report at a particular date and are not the same engagement as an audit of full annual financial statements. In August 2026, Tether announced that KPMG U.S. had issued an unqualified opinion on Tether International, S.A. de C.V.'s financial statements for the year ended 31 December 2025. The company reported that the audit covered the financial statements, transactions, systems, ownership records, valuations and counterparties and found reserves exceeding token liabilities at year end.[5]
Tether's Q2 2026 report was a separate BDO attestation as of 30 June 2026. Management reported about US$187.75 billion in assets and US$183.62 billion of liabilities relating to issued tokens. These are dated company figures, not a permanent guarantee of future solvency or immediate redemption capacity.[6]
Regulatory history
In 2021, the New York Attorney General settled an investigation of Bitfinex and Tether. The companies agreed to an US$18.5 million payment, restrictions on servicing New York customers and periodic reporting. The settlement described undisclosed transfers and concluded that earlier claims that every tether was fully backed by US dollars were false at points in time.[2]
Later in 2021, the U.S. Commodity Futures Trading Commission ordered Tether entities to pay a US$41 million civil penalty. The CFTC found that between June 2016 and February 2019 Tether had made misleading statements that circulating tokens were backed one-to-one by corresponding fiat currency in Tether bank accounts. The order said sufficient fiat reserves were present for 27.6% of days in a sampled 26-month period and that reserves sometimes included receivables and non-fiat assets.[7]
Those findings concern a historical period. They remain relevant to Tether's disclosure history but do not substitute for evaluating later audited statements and attestations on their own dates.
Contract administration and key risk
An independent September 2026 assessment by Hacken for the Bluechip rating framework examined native USDT contracts on Tron, Ethereum and Solana. It reported concentrated administrative signing arrangements, including a 2-of-3 scheme for the assessed Tron contract, reused signer sets on some EVM deployments and no timelocks in the reviewed controls. It did not report evidence that the keys had been compromised. Bluechip raised its overall USDT grade from D to C after adding the technical assessment and considering the 2025 financial audit, while retaining concerns about centralized controls.[8][9]
This is one assessor's dated risk analysis, not proof of a breach. The durable point is that contract-owner, mint and freeze keys can carry powers beyond ordinary user wallets; their threshold, separation, monitoring and delay controls are material to token risk.
On 14 September 2026, the United States Attorney's Office for the Southern District of New York filed a civil forfeiture complaint seeking approximately $61.2 million in USDT that it alleged were proceeds of sanctioned Iranian oil sales. The complaint said that Tether had frozen the listed addresses. The allegations remained subject to court determination and were not a final judgment.[10][11]
Risks
USDT holders face issuer solvency and liquidity risk, reserve-asset and custodian risk, regulatory restrictions, smart-contract and blockchain risk, administrative-key compromise, market-price deviations and loss of their own wallet keys. A secondary-market price near one dollar reflects trading and redemption expectations; it is not a protocol-enforced fixed price.
See also
External links
References
- ↑ Tether, “How Tether Grew”, 2022.
- ↑ 2.0 2.1 New York Attorney General, settlement announcement concerning Bitfinex and Tether, 23 February 2021.
- ↑ Tether Token Terms of Sale and Service, updated 26 February 2026.
- ↑ Tether, “Update on Transition Plan for Legacy Blockchains”, 29 August 2025.
- ↑ Tether, “Tether Completes the Largest Inaugural Financial Audit”, 13 August 2026.
- ↑ Tether, Q2 2026 attestation announcement, 31 July 2026.
- ↑ U.S. Commodity Futures Trading Commission, “CFTC Orders Tether and Bitfinex to Pay Fines”, 15 October 2021.
- ↑ Hacken, “USD₮ Rating Upgraded From D to C”, 4 September 2026.
- ↑ CoinDesk, “Tether receives Bluechip rating upgrade”, 4 September 2026.
- ↑ U.S. Department of Justice, U.S. Attorney Seeks Forfeiture Of $61 Million In Cryptocurrency From The Iranian Military's Black-Market Oil Sales, 14 September 2026.
- ↑ Civil forfeiture complaint, U.S. Department of Justice.