Hierarchical Distributed Ledger for IoT using Ethereum Blockchain

In the domain of Internet of things there are large number of devices generating data in the network and submitting it to their respective configured data collectors. When the sensors are preconfigured by the data collectors, they can easily verify the data coming from those sensors for its authenticity using cryptography. But if a third party wants to buy that data, how can they trust the data collector for the authenticity of that data i.e whether the data they are buying is real data or some randomly generated stream of numbers. In fact, the only option left is to trust the claim made by the collectors that the data they are providing is authentic. This project resolves the trust issue by creating a distributed application using blockchains by distributing the trust factor to the entire network instead of trusting a single entity [5]. This system provides authenticity of data generated by sensor nodes in the network.