The market of cryptocurrency exchange is developing slowly Now the turnover of the cryptocurrency has reached an unthinkable scale. With everypassing month, the number of transactions becomes higher, not only the number of transactions using cryptocurrency, but also the number of people participating in these transactions is growing.It became interesting for people to exchange fiat currency to tokens, and then carry out exchange operations within the cryptocurrency ecosystem. We observe an interesting trend, when global services for the exchange of cryptocurrency are in great demand, but the quality of the provision of services does not change for the better. Crypto community is allowed to be satisfied with such services as it is, without getting better to improve usability. Emergence of problem solving In response to consumer demand, Qvolta service appears, which is a global P2P exchange platform that allows users to quickly and easily convert cryptocurrencies into the fiat curre...