A BLOCKCHAIN AND QR CODE BASED MALICIOUS TRANSACTIONS ANALYSIS AND DETECTING THE VULNERABILITY. International Journal of Engineering Research and Science & Technology, [S. l.], v. 19, n. 2, p. 27–32, 2023. Disponível em: https://ijerst.org/index.php/ijerst/article/view/159. Acesso em: 25 oct. 2026.