It sounds like you're expressing a disclaimer or a statement about responsibility regarding the authenticity of a user. This type of statement is often used in online platforms, services, or agreements to clarify that the entity providing the service does not guarantee the truthfulness or accuracy of user-provided information.
If you're drafting a statement or policy, you might phrase it like this:
"The platform holds no responsibility for the authenticity or accuracy of any information provided by users. Users are encouraged to verify the identity and credibility of other users before engaging in any transactions or interactions."
Feel free to modify this to suit your specific needs!