Secure E-Health Records on Cloud using Cryptography & Blockchain Smart Contracts. INTERNATIONAL JOURNAL OF MANAGEMENT RESEARCH AND REVIEW, [S. l.], v. 15, n. 2s, p. 371–376, 2025. Disponível em: https://ijmrr.com/index.php/ijmrr/article/view/81. Acesso em: 8 dec. 2025.