Contributions published at Management of Department - Informatics (Monika Lauber Kenel)

The blockchain integration of IoT data across central databases poses a latent data manipulation risk. This thesis deals with the solution finding, of how the data can be signed at the IoT level and thus indirectly reach the blockchain without any manipulation risk. For this purpose, LoRa Network Protocol is used in this work, as LoRa is especially distinguished for Low Power Consumption and Long Range. Also, because we pay close attention to power consumption, we use a blockchain based on Proof-Of-Stake, which has low power consumption and higher transaction speed compared to Proof-Of-Work based blockchains. On an already existing and implemented Supply Chain Monitoring Platform level, signing IoT devices ensure transparency, traceability and authenticity in all steps. Since transparency is a central point in this work, no encoding algorithms are applied. This thesis also shows how a hierarchical payment system can be set up and implemented to ensure that all the actors of a supply chain can be fairly compensated by means of a blockchain.