Proof-of-Diversity (PoD): A Framework for Equitable Blockchain Governance

This paper introduces the Proof-of-Diversity (PoD) protocol, a new consensus mechanism that enhances decentralization, security, and energy efficiency using demographic, geographic, and computational diversity in validator selection. By using a multi-dimensional entropy-based approach, PoD shows high resistance to Sybil attacks, fosters inclusion, and ensures fair participation. Comparative analysis with Tendermint Proof-of-Stake (PoS) and Algorand Proof-of-Stake (Algorand) shows that PoD is more effective in various key metrics, including transaction finality, validator engagement, diversity entropy, energy use, and adaptability. In particular, PoD achieves a shortest average transaction finality time of 72.84 ms over a given period, a notable improvement compared to both Algorand at 215.37 ms and Tendermint PoS at 278.42 ms. In addition, PoD achieves a validator engagement of 85.42%, strengthening its ability to maintain decentralization. PoD also achieves a diversity score of 0.79, better than Tendermint PoS and Algorand, indicating a more fair and inclusive validator selection process. In terms of energy use, PoD achieves a mere 0.0132 kWh per transaction per second (TPS), a considerable improvement compared to its counterparts. In addition, PoD shows better adaptability to changes in step parameters and changes in benefit-cost ratios, further improving validator selection and network optimization. Overall, these results make PoD a scalable and sustainable consensus system that balances diversity, security, and performance in blockchain networks.