The key feature of such an exchange is the combination of high-speed blockchain technology and a local fiat payment system. Tether (USDT) is a stablecoin, a digital coin pegged to the US dollar, but stored and transferred through the TRC20 blockchain network, which is characterized by low fees and high transaction speed. On the other hand, a Visa or Mastercard card serviced in the national currency UZS belongs to a banking system that has its own limits, identification requirements, as well as internal regulations for accepting cryptocurrency funds in fiat form.