ABSTRACT
In recent years, an IoT (Internet of Things) system that supports human activities based on various types of real-world data (e.g., temperature, location, etc.) has been attracting attention in various fields. The operation of an IoT system is determined based on the real-world data measured and collected by sensor devices placed in various locations in the real world. If the real-world data is tampered within the process of measurement, collection and analysis, the reliability of the IoT system cannot be guaranteed. Therefore, we propose a new blockchain-based service delivery platform to support the development of IoT systems that can guarantee the reliability of both the real-world data and the procedure for analyzing the data. Furthermore, we design and prototype an IoT system based on the proposed platform for evaluating the effectiveness. The prototype system monitors the environmental information of offices and other facilities and analyzes the real-world data to identify risk of coronavirus infection. In the prototype system, the proposed platform provides the user with the function for validating that the analytical result is derived by applying the correct process to the real-world data. © 2022 IEEE.