Enkronos Apps realize a full trusted not manipulable publicly available blockchain based accountability system to guarantee its ethical usage for for AI, AR, IoT and Big Data solutions for data driven projects and campaigns. All the applications that will be published share a unified authentication system (SSO) that will also facilitate interoperability and greatly enhance every data-driven project in a common cloud-based environment. Furthermore they have a unique Credit Ethics System, thanks to the use of the blockchain. This is a real answer to the serious ethical issue in the use of big data raised by the recent case of Facebook – Cambridge Analytica