R. PALANIYAPPAN; 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, [S. l.], v. 18, n. 18s, p. 613–626, 2026. DOI: 10.70917/ijcisim-2026-4890. Disponível em: https://cspub-ijcisim.org/index.php/ijcisim/article/view/4890. Acesso em: 20 aug. 2026.