Lecturer Asst. Prof Alaa Nouri Mezher from the Department of Computer Sciences received an appreciation letter from the Faculty of Science / University of Diyala for the outstanding efforts by him to cooperate with the Faculty of Science by participating in a lecture on Block Chain Technology organized by the Department of Computer Science / University of Diyala, Sunday 11/3/2019. the lecture talked about the Block Chain technique, which is used to store and license digital transactions on the Internet with high security and encryption that may be impossible to break under the technologies available today.