Blockchain-Enabled Multi-Layer Security Model for Cloud Data Protection. International Journal of Engineering & Extended Technologies Research (IJEETR), [S. l.], v. 2, n. 2, p. 928–931, 2020. DOI: 10.15662/IJEETR.2020.0202002. Disponível em: https://www.ijeetr.com/index.php/ijeetr/article/view/14. Acesso em: 5 dec. 2025.