question

Is it possible to get a real-time purchase notification from Amazon when an app is purchased? Similar to in-app purchase notification but occurs during the initial purchase? I have not found any api's like this yet but hopefully I've just over-looked them. This would be a very useful feature for authenticating my customers. Here's the general flow I'm looking for: 1. customer purchases app from Amazon store 2. during the purchase, Amazon servers contact my servers with receipt information including the unique Android device fingerprint of the device that the app was purchased on ... so the target device can be identified later 3. customer downloads app from Amazon app store 4. customer launches app on their device 5. on first run, my app contacts my server directly passing the unique Android OS fingerprint. My app can be authenticated directly on my server for the device based on the unique fingerprint information stored in my database (from the previous call from Amazon) with the android device fingerprint running the app. I'd appreciate it if anyone can confirm whether this is currently NOT possible based on Amazon api's or point me in the right direction if this IS possible. Thanks!