Setiawan AT, Hindarto D. Development of a Prototype for a Product Recommendation System Using Blockchain Technology. Int. J. Softw. Eng. Comput. Sci. [Internet]. 2025 Aug. 1 [cited 2026 Jul. 18];5(2):484-97. Available from: https://journal.lembagakita.com/ijsecs/article/view/3855