As the global economy continues to experience rapid digital transformation, electronic payment (e-payment) has emerged as a pivotal driver of financial transactions worldwide. In this context, ensuring the security and privacy of electronic payment transactions has become a paramount concern. In this paper, we introduce a novel method of e-payment that incorporates a zero-knowledge proof scheme and blockchain technology to enhance privacy and bolster trust between parties engaged in financial transactions. In particular, we rely on advanced cryptographic techniques to verify transaction information without exposing sensitive payment details such as customers’ credit card numbers. We implemented the proposed system to evaluate the performance and effectiveness. The results show that our approach is promising.