Development of a Secure Blockchain-Based System for Medical Certificate Generation and Verification. American Journal of Engineering , Mechanics and Architecture (2993-2637), [S. l.], v. 2, n. 11, p. 41–60, 2024. Disponível em: https://grnjournal.us/index.php/AJEMA/article/view/6135. Acesso em: 23 jan. 2026.