A Survey of Consensus Mechanism Based on Reputation Model

Abstract

The reputation models may be used to evaluate the reputation of blockchain nodes, and the consensus mechanisms can use the reputation models to quantify the credibility or dependability of nodes. The consensus mechanisms and the reputation models have been coupled by researchers with the goal of improving the performance and security of consensus mechanisms. We summarized the consensus mechanism based on the reputation model (reputation consensus) in this paper. To begin, we’ve classified the many types of reputation consensuses and explained the benefits of each one. Second, we suggest a new performance assessment criterion for reputation consensuses based on the experimental section of the literatures, and we evaluate the performance of current reputation consensuses using the provided performance evaluation criterion. After that, we ran a statistical investigation on the security of reputation consensuses. Finally, we summed up the reputation consensuses in order to better grasp present research issues and future research directions.