ProChain (using the token ticker PRA) is what could be called an ecosystem, or a platform, created specifically with a view to change the way digital advertising works at the present moment. By employing the latest blockchain solutions, the ProChain project is able to achieve the security, speed and transparency like never before seen in that area of business. The ProChain stores the information about the transactions taking place on the platform in the form of blocks, which guarantees an unprecedented amount of security as well as a solid level of protection from even the platform’s own possible malicious intentions. The information stored on those blocks would be absolutely inaccessible to anybody who does not have the credentials needed to access it. The platform makes a specific emphasis on the Chinese market, though there will obviously be a way for international clients to participate, and as its foundation the ProChain developers took the Big Data approach - analyzing an enormous amount of data, in order to create the greatest advertising platform.