R. Palaniyappan, and D. Sasikala. “ENHANCED CRYPTOGRAPHIC INTEGRITY: INTEGRATING MODIFIED SHA-256 FOR SECURE DISTRIBUTED LEDGER-BASED MEDICAL RECORD SYSTEMS”. International Journal of Computer Information Systems and Industrial Management Applications, vol. 18, no. 18s, Aug. 2026, pp. 613-26, doi:10.70917/ijcisim-2026-4890.