The history of anonymous cryptocurrency exchange is closely linked to the development of encryption technologies. Without cryptography, which ensures data protection on the Internet, the very concept of private transactions would be impossible. The first exchange services used relatively simple mechanisms for hiding information - for example, temporary mixing of funds from different users. This worked to a certain level, but with serious analysis it still made it possible to track the chain of transfers. The next step was multi-signatures and mixing protocols, which significantly complicated the task for analysts. With the development of decentralized technologies, it became possible to build exchange platforms where the users themselves become network nodes, and their transactions are encrypted in such a way that it is almost impossible to track the source. At the same time, confidential coins were developed in parallel, which were originally designed to be protected from analysis. All this created a unique ecosystem of tools that changes the idea of ​​​​what money is in the digital age. However, it is worth remembering: no technology is absolutely reliable. Anonymity in cryptocurrency exchanges is always a balance between technical means of protection, legal context, and the willingness of users themselves to comply with security rules. In the future, we will probably see a synthesis of different methods: from advanced encryption algorithms to hybrid protocols that combine privacy and control in reasonable proportions.