A True Decentralized Implementation Based on IoT and Blockchain: a Vehicle Accident Use Case

In this paper, we will present a new model of distributed ledger-based IoT network, in which we combined Hyperledger Sawtooth as blockchain with Inter Planetary File System (IPFS) as a distributed storage system. The combination of these two types of distributed ledger technologies can allow more efficient data storage than in other blockchain implementations. This work was initiated by the automotive manufacturer Renault based on the idea of a new ecosystem of smart vehicles containing IoT devices. We will focus on an accident use case. After the accident, the cars send their data to a dedicated smart contract. We will also describe furthermore our implementation, the characteristics of Hyperledger Sawtooth and IPFS and finally, we demonstrate the realistic feasibility of this implementation by latency measurements.