Student identification and grading system based on NFC and blockchain based on nfc and blockchain technology. COLOMBIAN JOURNAL OF ADVANCED TECHNOLOGIES, [S. l.], v. 2, n. 42, p. 23–32, 2023. DOI: 10.24054/rcta.v2i42.2670. Disponível em: https://ojs.unipamplona.edu.co/index.php/rcta/article/view/2670. Acesso em: 16 oct. 2025.