With this application you can use your smartphone as a dash cam. When the application detects an accident, it creates a tamperproof timestamp of the application with the help of the bitcoin blockchain. In addition the application provides a function to automatically send SMS containing information about the timestamp and the geographical coordinates if an accident is detected. To create the timestampes the service "Originstamp" is used. Originstamp allows its users to create anonymous, tamperproof timestamps with the help of the bitcoin blockchain. For more information regarding Originstamp visit www.originstamp.org/faq. Because the accident detection is based on the phones sensors, it can not provide one hundred percent reliability. In case of an emergency there is still a button to save the accident manually.