Secure Smart Contract Based on Blockchain to Prevent the Non-Repudiation Phenomenon. Baghdad Science Journal, Iraq, Baghdad, v. 21, n. 1, p. 0234, 2024. DOI: 10.21123/bsj.2023.8164. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/8164.. Acesso em: 10 may. 2024.