All applications are one instance , and each instance will contain two chains. One is a logic chain and the other is a data chain . The identity information of the instance will be written into the application main chain. The main job of the application main chain is to store the basic information of the application instance, which is used to mark the availability of the application. Users can issue Install and Uninstall instructions to the application chain to apply for instantiated chain resources to the public chain system.
