Blockchain-Based Decentralized Healthcare Data Management System with Zero Knowledge Proof Ring Signature for Secure, Tamper-Proof, and Privacy-Preserving Storage
Mohana Shanmugham, C Senthilkumar · 2025
The Blockchain-Based Decentralized Healthcare Data Management System with Ring Signatures and Zero- Knowledge Proofs (ZKPs) offers a state-of-the-art method for securely storing Electronic Health Records (EHRs) while ensuring impenetrable protection and confidentiality. This solution integrates blockchain technology with ZKPs and Ring Signatures to address these challenges, enabling secure and private information management. By leveraging ZKPs, the system ensures privacy during authentication by allowing healthcare providers to demonstrate their authority to access specific patient records without disclosing sensitive information. Ring Signatures enable any authorized entity within a defined group to modify data through anonymous yet authenticated transactional signing, preserving identity confidentiality. The primary goal of this approach is to establish a decentralized framework that ensures data accuracy, confidentiality, and accountability, granting patients secure and verified ownership of their medical records. Preliminary findings highlight the system's effectiveness in safeguarding patient privacy, facilitating transparent communication between patients and providers, and preventing unauthorized modifications. The study also evaluates accessibility and sustainability across medical networks, yielding promising results for real-world healthcare applications. This blockchain-based approach lays the foundation for a safer, more patient-centered, and collaborative healthcare information ecosystem.