In order to develop for the platform, you need to register your application[0], and your device[1]. Also you cannot even run your own application without getting google's approval[2], which costs $5..
Then, at runtime, the device will first validate that the app you are trying to run was validated, sending the `AppID` to google.
The CC itself will refuse to boot without an internet connection ..
Once it booted, it provides a limited offline functionality; if it requires to load `appID` from the internet, and it's not connected: it will block
Also since last February update, you need an internet connection to stream local content ..
I'm sorry Dave, you cant do that