Sahil Fruitwala and Purva Desai 2025. A Proposed Hybrid Blockchain-DID-ZKP Approach to Secure, Auditable, and Private Healthcare Interoperability. The American Journal of Engineering and Technology. 7, 10 (Oct. 2025), 08–19. DOI:https://doi.org/10.37547/tajet/Volume07Issue10-02.