# USDT: Tether USD

USDT is Tether’s dollar-pegged token and the longest-running major fiat-backed stablecoin.

## Key details

- **Issuer:** Tether
- **Reference currency:** USD
- **Backing model:** Cash and short-duration US dollar assets
- **Created:** 2014-10-06
- Fiber · Supported for deposit

## About

Tether was founded in 2014 and launched USD₮ on Bitcoin’s Omni Layer so crypto markets could move dollar value between venues without waiting on bank transfers. It later expanded the token to multiple blockchains and grew beyond stablecoins into other digital-asset and infrastructure projects.

## Supported chains

- Aptos
- Avalanche
- BNB Smart Chain
- Celo
- Ethereum
- Kaia
- Kava
- Liquid
- NEAR
- Polkadot Asset Hub
- Solana
- Tezos
- TON
- Tron

- **Reference contract:** `0xdAC17F958D2ee523a2206206994597C13D831ec7` (Ethereum)

## Legal jurisdiction

El Salvador

El Salvador’s Digital Assets Issuance Law and CNAD Stablecoin Public Offering Regulations; Tether is authorized as a stablecoin issuer and digital-asset service provider.

## Sources

- [Official site](https://tether.to/en/what-is-USDT)
- [Tether](https://tether.to/en/supported-protocols/)
- [Tether information document](https://tether.to/public/Relevant_Information_Document_-_Tether_International%2C_S.A._de_C.V..pdf)

This directory is for research, not an endorsement or an availability promise from Fiber. Stablecoin designs, reserves, networks, and redemption terms can change.

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