Ashari, D. R.; Khusnul Khotimah; Putra, S. D. S.; Shalih, A. D. Z. Z. N.; Tambun, A. R. C.; Putri, M. A. R.; Jessica Joylynn Kaligis. Blockchain and Data Security Management in Financial Services: A Strategic Evaluation With the COBIT 2019 Framework. J. Digit. Bus. Innov. Manag. 2026, 5.