ULUMUDDIN, Z. A.; MAULANA, H. Design and development of a Web3-based student graduation badge system for FIKTI UMSU using non-transferable NFTs and smart contracts on the Ethereum testnet. Jurnal Sains, Teknologi & Komputer, [S. l.], v. 3, n. 1, p. 48–54, 2026. DOI: 10.56495/saintek.v3i1.1309. Disponível em: https://jurnal.larisma.or.id/index.php/SAINTEK/article/view/1309. Acesso em: 25 aug. 2026.