USDT is one of the most famous and popular altcoins, which was launched back in 2014 and became the first successful and widely used steablecoin. The USDT is backed by a US dollar ratio of 1:1, which means that its price is always equal to the market price of the fiat. In addition, the USDT is suitable for investment, as the quality of providing this steablecoin is under constant control. Tether recently signed an agreement with a reputable European auditor, confirming the availability and quality of reserves. The issuing company also supports procedures such as AML and CFT, which helps to combat money laundering and prevent the financing of terrorism. However, Tether did not previously have transparency in the conduct of business. The company did not undergo audits or provide financial statements. In addition, the reserves of this stake were questionable. Now the company has become more open and transparent, which only confirms its reliability.