Optimizing Consensus Mechanisms in Blockchain Networks: A Comparative Simulation Study

Abstract

This paper presents a comprehensive simulation study comparing the performance of various consensus mechanisms in blockchain networks. We developed a custom blockchain simulator to evaluate Proof of Work (PoW), Proof of Stake (PoS), and Delegated Proof of Stake (DPoS) under different network conditions and attack scenarios. Our results indicate that PoS and DPoS offer significant improvements in transaction throughput and energy efficiency compared to PoW, with DPoS showing the highest scalability. However, PoW demonstrated superior resistance to certain types of attacks. We also propose a novel hybrid consensus mechanism that combines elements of PoW and DPoS to balance security and performance. Our findings provide valuable insights for blockchain designers and can guide the development of more efficient and secure blockchain systems.