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Study of Blockchains-s Consensus Mechanism Based on Credit - 2019

Study Of Blockchains-S Consensus Mechanism Based On Credit

Research Area:  Blockchain Technology

Abstract:

Practical Byzantine fault tolerance (PBFT) is one of the most popular consensus protocols of the blockchain. However, in the PBFT, the enthusiasm of reliable nodes cannot be stimulated effectively, and a large amount of communication resources are used for data consistency. Therefore, a new consensus protocol-credit-delegated Byzantine fault tolerance (CDBFT)-is proposed in this paper. The CDBFT works as the following: 1) a voting rewards and punishments scheme and its corresponding credit evaluation scheme are proposed not only to stimulate enthusiasm of reliable nodes but also to reduce the participation of abnormal nodes in the consensus process, and the virtuous circle of the system can be founded and 2) consistency and checkpoint protocols based on PBFT are proposed to improve the efficiency and flexibility of system. From the simulation results, a conclusion can be drawn, the participation probability of abnormal nodes in the consensus process can be reduced to 5%, and the efficiency and stability of the system are improved greatly in the long-time running.

Keywords:  

Author(s) Name:  Yuhao Wang; Shaobin Cai; Changlong Lin; Zuxi Chen; Tian Wang; Zhenguo Gao; Changli Zhou

Journal name:   IEEE Access

Conferrence name:  

Publisher name:  IEEE

DOI:   10.1109/ACCESS.2019.2891065

Volume Information:   ( Volume: 7) Page(s): 10224 - 10231