Figure 3. Hyperledger Blockchain Network Architecture [28]
Figure 3 shows the internal structure of the Hyperledger Blockchain
network. In the Hyperledger Blockchain network, there are service
providers, certificate authority, device certification center, device
membership module, peers, administrator services, registry and database
to network members. Hyperledger Fabric Network Adapter is available for
communication with end devices. Thanks to microservices written with
edge devices, communication is provided by following communication
protocols. Edge devices have device service, device sensors, kernel
information and crypto services. In the study referenced in Figure 3,
while blockchain technology was combined with edge computing technology,
microservices and messaging systems were prepared as separate layers and
used as middleware. Message systems such as Kafka and Zookeeper transmit
the data it listens from the microservice layer to the blockchain
structure. In the infrastructure we designed, the edge structure and
blockchain structure communicate with the prepared microservice.