PBFT-based delegated proof-of-stake (DPoS) blockchain consensus algorithm

Abstract

The invention provides a PBFT-based DPoS blockchain consensus algorithm, which defines concepts of credit rating, credit coefficients and the like, and introduces an agent node election model based on credit reward and punishment. Under the election model, network nodes greatly reduce the proportion of abnormal nodes becoming agents by voting against it. Meanwhile, due to credit stability and a time reset mechanism, common nodes need to participate in election voting as much as possible, and the election enthusiasm is effectively improved. In order to solve the problem that the DPoS consensus algorithm cannot process malicious nodes in time in a round of election period, an agent node set and an alternative agent node set are elected, the alternative agent node set is used for replacing nodes which fail in multiple times of block output in the agent node set in time, and therefore the malicious nodes are effectively processed. In another aspect, in order to solve the problem that the DPoS algorithm verification time delay is far greater than the block production time delay, so that the block output efficiency is influenced, the algorithm elects a verification node set, and then introduces the PBFT algorithm to quickly verify the block.

Description

technical field [0001] The invention belongs to the technical field of block chain consensus algorithms, and in particular relates to a PBFT-based entrusted proof of rights block chain consensus algorithm. Background technique [0002] With the rapid rise of digital currencies such as Bitcoin, more and more researchers and financial technology companies have begun to invest in the research of its underlying technology - blockchain. The consensus mechanism is one of the core technologies of the blockchain system, which directly determines all aspects of the system's performance indicators and application-oriented scenarios. [0003] The blockchain platform as a whole can be divided into five layers: network layer, consensus layer, data layer, smart contract layer and application layer. The greatness of blockchain technology is its consensus mechanism, which solves the problem of mutual trust between nodes based on the idea of ​​decentralization. The blockchain has many node...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a PBFT-based entrusted proof of stake blockchain consensus algorithm to solve the problem that ordinary nodes in the blockchain network are not active in voting, and it is easy for a small number of nodes to jointly vote for a candidate node. Malicious nodes failed to be processed in a timely manner, affecting the packaging and verification of blocks, resulting in certain security risks, as well as problems such as excessive block verification delays

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