An Improved Blockchain Consensus Mechanism Based on Open Business Environment

Abstract With the rise of the blockchain, the underlying technology has also received more and more attention. The blockchain is a point-to-point distributed system, and the consensus algorithm is a mechanism to resolve the consensus of each node. Byzantine Fault Tolerance (BFT) is a fault-tolerant technology in the field of distributed computing. The blockchain network environment conforms to the Byzantine general problem model. In order to make it suitable for open business environment, we propose an improved blockchain consensus mechanism based on Practical Byzantine Fault Tolerance Algorithm (PBFT) that consider different business. The consensus algorithm proposed in this paper (OBE-PBFT) introduces the historical behavior credit rating of nodes to optimize the view change protocol in PBFT, so as to solve the problem of low consensus success rate and large traffic when encountering Byzantine nodes. The historical credit rating of the node can make the consensus process more robust, in order to solve the problem of different business in the alliance chain consensus mechanism in the open business environment.