Zero-Knowledge Proof Algorithm for Blockchain-Based Identity Verification Systems

Abstract

The rising need for safe and privacy-preserving digital identity verification has exposed the limits of previous methods, which typically involve personal information. These technologies risk users' privacy owing to data leaks and user-centric management issues. Due to these problems, this article presents ZK-VerifyChain, a blockchain-based Zero-Knowledge-based Verification system. The proposed ZK-VerifyChain uses permissioned blockchain smart contracts and non-interactive zero-knowledge proofs to verify identities securely. With this design, users can identify themselves without giving personal information. The suggested technique was tested in a virtual environment for computational overhead, scalability, and verification time. Testing has demonstrated that the ZK-Verify Chain is effective, fast, and secure against manipulation and identity theft. The blockchain layer provides immutability, transparency, and decentralized trust management. The suggested ZK-VerifyChain moves us closer to user-controlled, secure digital identity systems by providing a scalable, privacy-centric digital identity verification solution. The experimental results show an average verification time of 12.4 ms compared to other methods.