PBIM: A Participant Based Incentive Mechanism for Consortium Chain

Abstract

In the existing public chain environment, most incentive mechanisms are for miners, who can obtain rewards after the packaged blocks are put on the blockchain. Compared with the public chain, the consortium chain network does not have the concept of coin rewards. The number of consensus nodes in the consortium chain network is limited, and the consortium chain forces nodes to provide services when they are admitted. Not only that, the transactions in the consortium chain are more complicated. Therefore, the original incentive mechanism based on miners and transaction gas is no longer applicable to the consortium chain environment. It has become a trend to consider the incentive model from the perspective of the participants. This paper proposes a participant-based incentive mechanism for the consortium chain, which is aimed at all participants. Based on the complexity of transactions, this paper proposes a multi- dimensional transaction ranking strategy to motivate participants. This strategy ensures that active participants have priority on- chain rights and inactive participants can also meet their needs, and solve the problems of malicious attack, transaction starvation and so on. Experiments show that our incentive mechanism can adapt to multiple scenarios and provide an active environment for consortium chain.