Research on Lightweight Blockchain Technology Based on Edge Computing

With the continuous development of Internet of Things technology, It faces many security and trustworthiness issues. Blockchain technology has the characteristics of secure communication, tamper-proof, multi-party consensus and so on. Much research focused on the integration of blockchain and IoT. However, the traditional blockchain for IoT is based on cloud computing architecture, which has shortcomings such as prolonged communication time, slow blockchain processing speed, and difficulty in real-time uploading of massive IoT data to the blockchain. On the other hand, the traditional edge computing-based blockchain for IoT system only collects IoT data on the edge side, and the actual blockchain interaction work is still implemented in the cloud. This causes problems of data loss and high pressure on the central server. Against these problems, this paper proposes a lightweight and high-performance blockchain dedicated to IoT scenarios: Fast and Lightweight Blockchain for IoT. The proposed lightweight blockchain improves the speed of storage of IoT data. Experiments indicate the Transaction Per Second of FLBC-IoT far exceeds that of traditional blockchains such as Ethereum and Hyperledger Fabric. The proposed lightweight blockchain is suitable for IoT system based on edge computing.