关键词: 授权股份证明（DPoS）, 共识机制, 以太坊, 区块链

Abstract:

An improved scheme based on incentive mechanism and credit mechanism is proposed to solve the problems of low voting enthusiasm of nodes in the Delegated Proof of Stake（DPoS） mechanism and how to reduce the probability of malicious nodes being elected as representative nodes. The incentive mechanism stipulates that the transaction fees earned by the representative nodes are shared with the nodes voting for it, and proposes an improved revenue allocation algorithm to rationally allocate the rights and interests of each node. The credit mechanism sets the reputation value and status for the node, and increases the difficulty for the malicious node to become the representative node by optimizing the calculation of the voting result. A test blockchain is built on the Ethereum platform to conduct an experimental analysis of the improved scheme, and the results show that the improved scheme can reduce the probability of successful malicious node election and improve the security of the system.

Key words: Delegated Proof of Stake（DPoS）, consensus mechanism, Ethereum, blockchain