Internet of Things (IoT) networks composed of a large number of sensors and actuators generate a huge volume of data and control commands, which should be enforced by strong data reliability. The end-to-end data reliability of IoT networks is an essential industrial enabler. Blockchain technology can provide strong data reliability and integrity within IoT networks. We designed a lightweight end-to-end blockchain network that applies to common IoT applications. Its enhanced modular architecture and lightweight consensus mechanism guarantee its practical applicability for general IoT applications. In addition, the proposed blockchain network is highly software compatible because it adopts the Hyperledger development environment. Directly embedding the proposed blockchain middleware platform in small computing devices proves its practicability.
A preliminary version of this paper appeared in ICCA-KSB, November 16\u201317, 2018, Seoul, Korea. This version includes a concrete analysis and supporting implementation results for the previous version. This work was supported in part by a grant from the Institute for Information and Communications Technology Promotion (IITP) funded by the Korean Government (Ministry of Science and Information Technology) (Versatile Network System Architecture for Multi-Dimensional Diversity) under Grant 2016000160, and in part by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (Ministry of Science and Information Technology) under Grant 2020R1F1A1049553
