Privacy-preserving Identity Verification Using Blockchain And Zero-knowledge Proofs

Abstract

Digital Identity Verification In The Modern Era Frequently Necessitates The Full Disclosure Of Sensitive Personal Data, Which Creates Significant Privacy Vulnerabilities And Security Risks. To Address These Challenges, This Project Proposes A Decentralized, Privacy-preserving Identity Verification System Built On Blockchain Technology. The Framework Utilizes Cryptographic Hashing (SHA-256) To Secure Identity Attributes And Anchor Them On An Immutable, Tamper-proof Ledger.The Core Of The System Is A Selective Disclosure Mechanism, Which Empowers Users To Share Only The Specific Information Required By A Verifier Rather Than Their Entire Identity Profile. By Integrating Concepts From Zero-Knowledge Proofs (ZKP) And Decentralized Identifiers (DID), The Approach Ensures That Authentication Can Occur Without Revealing The Original Sensitive Data To The Verifying Party. This Proposed System Provides A Secure, User-controlled Alternative To Traditional Centralized Databases, Ultimately Enhancing Privacy, Data Integrity, And Trust In Digital Verification Processes.

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