A Derivative PBFT Blockchain Consensus Algorithm With Dual Primary Nodes Based on Separation of Powers-DPNPBFT

The Practical Byzantine Fault Tolerant (PBFT) consensus algorithm has many advantages, which makes PBFT utilized widely. Nonetheless, is not suitable for large-scale node scenarios due to its high communication complexity and it also an apparent disadvantage of inadequate fault tolerance. typically derived algorithms focus on reducing at the cost diminished system security or In this paper, Dual-Primary-Node Tolerance (DPNPBFT) proposed achieve best balance above three performances. First, DPNPBFT selects dual master nodes based idea power separation. two check supervise each other avoid excessive centralization as a single system. It reduces replica node, only communicates with node. Furthermore, we designed architecture get practical 49% tolerance rate, close current mainstream Proof Work Stake algorithms. Experimental results demonstrate that O(N) level excellent anti-host malicious performance. Transactions Per Second stable 1700. proves performance comprehensive Internet Things application scenarios.