A Scalable Hierarchical-Domain Blockchain-Based Sharding System Towards Collaborative Sensing in Power Trading

Benefiting from the popularization of 6G and loT, blockchain-based collaborative sensing of power trading has received extensive attention from academia and industry. However, the low scalability seriously hinders the further widespread application of blockchain technology. Therefore, this paper proposes a blockchain-based hierarchical-domain sharding system BCShard, which adopts the client-edge-cloud three-layer architecture and adopts an improved privacy protection clustering algorithm based on historical transactions to securely implement blockchain sharding and efficiently process cross-shard transactions. In addition, we implement a blockchain sharding system prototype system based on open-source codes. Detailed theoretical analysis and experimental results show that our system is compared with other state-of-the-art solutions in different metrics, demonstrating the scalability, efficiency and security of our system in the PloT scenario.