The statement "holds no responsibility for authenticity of the user" typically means that the entity or organization providing the document (such as a website, service provider, or issuer of the document) does not take accountability for verifying the identity or the legitimacy of the individual using the document.
In practical terms, this means that if the document is presented by a user, the issuer is not liable for any consequences that arise from the user misrepresenting their identity or providing false information. Essentially, it is a disclaimer that protects the issuer from legal or financial responsibility related to the misuse of the document by the user.