Proof-of-Social-Capital: A Consensus Protocol Replacing Stake for Social Capital

TL;DR

This paper introduces a novel blockchain consensus protocol that replaces financial stakes with social capital, leveraging trust and influence to promote fairness, decentralization, and engagement, while integrating privacy-preserving cryptographic techniques.

Contribution

It presents a new social capital-based consensus mechanism combining zero-knowledge proofs, verifiable credentials, and leader election to enhance fairness and resist Sybil attacks.

Findings

The protocol enhances privacy and equity in blockchain consensus.

It effectively prevents Sybil attacks through social influence measures.

The approach aligns with social media behaviors and has applications in decentralized finance.

Abstract

Consensus protocols used today in blockchains often rely on computational power or financial stakes - scarce resources. We propose a novel protocol using social capital - trust and influence from social interactions - as a non-transferable staking mechanism to ensure fairness and decentralization. The methodology integrates zero-knowledge proofs, verifiable credentials, a Whisk-like leader election, and an incentive scheme to prevent Sybil attacks and encourage engagement. The theoretical framework would enhance privacy and equity, though unresolved issues like off-chain bribery require further research. This work offers a new model aligned with modern social media behavior and lifestyle, with applications in finance, providing a practical insight for decentralized system development.