Tether (USDT) was launched in December 2014. This digital currency is backed by the US dollar and is known as a "stablecoin". That is, its purpose is to maintain the strength of value against the dollar. Since then, USDT has been recognized as one of the most popular stablecoin tokens in the cryptocurrency markets. Tether or USDT is a digital currency linked to the US dollar and aims to connect fiat (traditional money) with the world of digital currencies. This digital currency is commonly used for transactions and quick asset transfers in digital currency markets because it has a fixed value compared to the dollar.