Tether (or USDT) is a stablecoin. One Tether coin will always have a value equal to or very close to one American dollar. The crypto got its name in 2014. Tether breaks the concept of decentralization and does not use consensus mechanisms such as proof of work or participation. It is created simply in order to be an instrument of exchange and is not able to explore concepts such as mining. To ensure the transparency of its activity, Tether uses a "proof of funds". Tether allows investors to act quickly and also serves as a hedge if an investor detects problems in the markets. In addition to maintaining its value of $1 for 1 USDT, Tether currency can also be sold during a crash for its total value, allowing the investor to buy cryptocurrencies with big discounts, without seeing the main cryptocurrencies (such as Bitcoin and Ethereum) crashing together, and thus eliminating any advantage. Tether’s transactions are very cheap. For example, if a user sends USDT from one account to another, there are no fees. But exchanging USDT for other cryptocurrencies or fiat currencies incurs a small commission to be realized. The crypto is a highly integrable currency. As a result, virtually all exchange platforms offer pairs to trade. Tether greatly facilitates the task of protecting the traders’ funds. This allows to quickly exchange more volatile cryptocurrencies like Bitcoin in a stable cryptocurrency.