You can refer to the regulatory information of third-party platforms. Of course, you can also go directly to the platform regulator to check whether it is true. For example, if you have an FCA regulatory license, you can go to FCA to check whether the regulatory qualification, license number and business scope are consistent, so that you can directly judge whether the trader is formal. It is recommended to go to the licensed institution to check, and the third-party platform is more or less wet.