B-LOCK: A Blockchain-Based Certificate Validation System for Secure Academic Document Verification. International Journal of Information and Electronics Engineering, [S. l.], v. 16, n. 1, p. 78–83, 2026. DOI: 10.48047/2t6yj265. Disponível em: https://www.ijiee.org/index.php/ijiee/article/view/1097. Acesso em: 20 apr. 2026.