VANGUARD: A Blockchain-Based Solution to Digital Piracy. Global Journal of Computer Science and Technology, [S. l.], v. 20, n. E4, p. 19–28, 2020. DOI: 10.34257/GJCSTEVOL20IS4PG19. Disponível em: https://computerresearch.org/index.php/computer/article/view/2008. Acesso em: 25 jun. 2026.