Decentralized Authentication And Authorization System Based On Qr-Code Data Extraction And Blockchain Technology. International Journal of Environmental Sciences, [S. l.], p. 2012–2017, 2025. DOI: 10.64252/n0nzwf05. Disponível em: https://theaspd.com/index.php/ijes/article/view/4699.. Acesso em: 11 jan. 2026.