IoT Based Cold Chain Logistics with Blockchain for Food Monitoring Application

In the field of raw food and seafood transportation, the importance of real-time temperature control and monitoring cannot be overstated. The assurance of product safety throughout the transport will enhance the product's trustworthiness which is one of the factors that customers consider while deciding whether to utilize the service. This paper presents the concept of the cold chain system using Internet of Things devices and blockchain technology. The device collects temperature and geolocation and sends it to Hyperledger Sawtooth, a key blockchain infrastructure that has been chosen. The idea behind the application is to allow consumers to track products through a supply chain and notify the driver when the container's temperature is out of the range. In order to record the shipment log as a blockchain transaction, we connected the application, the devices, and the blockchain database together. This concept can guarantee the integrity, trust, and traceability of the data because no one has the authority to change, modify or delete any information.