According to relevant information, Yunzhengtong is not a pyramid scheme, because Yunzhengtong is a third-party basic authentication signature service platform launched by CICC Financial Certification Center Co., Ltd., which provides data signature and Internet authentication services for the Internet. Ensure that user transactions are safer; Financial-grade security infrastructure and cloud service operating environment are safer. Therefore, the American Express Card is not a pyramid scheme. For specific information, please pay attention to official website for first-hand authoritative information.