Development of an Optimized Hybrid XGBoost–GRU Model for Detection of Ponzi Schemes in Ethereum Transaction Networks. FUDMA Journal of Engineering and Technology, [S. l.], v. 1, n. 2, p. 685–691, 2025. DOI: 10.33003/r3emct63. Disponível em: https://fjet.fudutsinma.edu.ng/index.php/fjet/article/view/87. Acesso em: 14 mar. 2026.