This document contains 3 certificates from PSN College of Engineering and Technology recognizing contributions made at an international conference on advanced materials, modern manufacturing, and computerized automation held on June 23-24, 2023. The certificates were issued to Sivapriya S, Vidharshana J, and Ragsana R V for their presentation titled "Overcoming Limits of Internet of Things Using Blockchain Technology" at the conference organized by the Department of Mechanical Engineering.