Tether, commonly known by its ticker USDT, is a stablecoin cryptocurrency designed to maintain a value close to 1 U.S. dollar by being pegged 1:1 to fiat currency held in reserves by its issuer, Tether Limited. Launched in 2014, USDT is widely used in crypto markets as a way to move funds quickly, provide liquidity, and reduce exposure to the price swings typical of other cryptocurrencies like Bitcoin and Ethereum. It operates on many blockchains (such as Ethereum and Tron) and is one of the largest stablecoins by market capitalization, playing a key role as a “digital dollar” in trading and payments worldwide.