P. H. P. Tan, Agung Rizky, Q. Aini, D. N. Ramadhan, and Thomas Green, “Utilizing the AlphaSign Website to Create Blockchain-Based or Online Digital Signatures”, BFRONT, vol. 5, no. 1, pp. 25–36, July 2025, doi: 10.34306/bfront.v5i1.785.