BLOCK CHAIN BASED CERTIFICATE VERIFICATION SYSTEM. International Journal of Engineering Research and Science & Technology, [S. l.], v. 22, n. 1, p. 799–808, 2026. DOI: 10.62643/ijerst.2026.v22.n1.pp799-808. Disponível em: https://ijerst.org/index.php/ijerst/article/view/1873. Acesso em: 11 nov. 2026.