| dc.description.abstract | The number of IoT devices is over several billion as of 2020. The increased number of IoT devices and the generated data introduces the challenge of privacy. There is a need for a safe and trustworthy-based storage model. IoT devices can be used to monitor, predict, and schedule machinery maintenance. The service history and generated IoT data for analysis are critical, and data integrity is vital. The thesis presents a solution for storing such critical IoT operational sensor data in a decentralized ledger. Instead of storing data in a traditional database or in a cloud, the data is stored in both Ethereum blockchain and IOTA tangle. The thesis develops an application that can acquire data from IoT devices, store it in the decentralized ledgers such as Ethereum and IOTA, and stakeholders can view historical operational data in immutable and secure technology. The performance of the proposed solution is evaluated and a comparison between the distributed ledger technologies are conducted. | |
