The popularity of various cryptocurrencies, including Tether (USDT), is growing every year. TRC20 has many advantages compared to fiat money, such as hryvnias. Users are attracted by the anonymity of transactions provided by the blockchain, the ability to store funds in an online wallet that only the owner has access to. Moreover, storing savings in cryptocurrency, such as Tether, is much more profitable than in fiat money. The hryvnia suffers from inflation, while USDT only grows. All this leads to thousands of people wanting to exchange Ukrainian currency for TRC20. For this purpose, an exchange with good conditions, preferably an automatic process, and fully secure is needed.