The purpose of this thesis was to analyse the advantages, disadvantages and
the inner workings of the Hyperledger Fabric platform, a platform used to build
consortium blockchain networks. For that purpose a simple proof of concept IoT
system was designed on which the study was carried out. It served as a way to
present the technology, but also to see how it works and operates in practice.
By setting up the proof of concept IoT system we got a closer look at the
process of creating a consortium blockchain network and how it operates. The
system itself consists of remodeled air quality sensors which were fitted with
ESP8266 Wi-Fi chips to give them network connectivity. These sensors sent
their readings to a computer node nearby that was capable of processing and
commiting the data to the blockchain. We set up multiple organizations where
one owned the sensors and the other one provided access to the sensor data for a
fee. We setup a simple dapp that could read and pay for the sensor data.
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