On-Chain Identity Verification and Privacy Challenges

This chapter explores the intricacies of on-chain identity verification, particularly in voting scenarios, emphasizing the extraction of attributes from documents to prove citizenship and age while maintaining privacy. It discusses the innovative integration of blockchain technology and zero-knowledge proofs to create a democratic identity system that balances decentralization, privacy, and verifiability, as well as the ethical implications of using biometric data. The chapter highlights the need for non-intrusive methods to manage identity while ensuring compliance and user control over personal information.