M. A. Aziz, S. M. Hanafi, M. L. Ammar, and L. Muhyiddin, “From Digital Collectibles to Zakatable Income: A Sharia and Regulatory Analysis of NFT Creator Earnings in Indonesia”, hikmatuna, vol. 12, no. 1, pp. 84–94, Jun. 2026, doi: 10.28918/hckwb074.