Certificate Validation Using Blockchain. International Research Journal on Advanced Engineering Hub (IRJAEH), [S. l.], v. 4, n. 07, p. 4612–4618, 2026. DOI: 10.47392/IRJAEH.2026.0605. Disponível em: https://irjaeh.com/index.php/journal/article/view/1918.. Acesso em: 12 jul. 2026.