Design of Trust Blockchain Consensus Protocol Based on Node Role Classification

The blockchain technology has broad application prospects in the financial field, public welfare industry, and Internet with its characteristics of decentralization, openness, autonomy, information unchangeability and anonymity. The most prominent problem it faces is the difficulty in reaching a credible consensus quickly. Based on the consensus mechanism of DPoS and PBFT, a new trust blockchain consensus protocol is proposed. This protocol adds trust value attributes to nodes, dynamically classifies node roles, tracks node behaviors in transactions, and scores trust values for the nodes. The node promotion and demotion mechanism is introduced and the roles of nodes are reclassified according to their latest trust values. Results show that the proposed consensus protocol has high efficiency, low consumption, high fault tolerance and dynamic adaptability, which can meet the needs of most alliance chains.