Systems and methods are disclosed for identity authentication using credit card information supplied by a subject with independently determined address information. According to an example implementation, a method is provided that can include receiving, from a client, personally identifying information (PII) related to a subject, where the PII includes at least a subject-supplied name and subject-supplied credit card information. The method can include querying one or more public or private databases with the PII, and receiving, in response to the querying, independent occupancy address information related to the subject. The method can include requesting credit card verification from an authorizing entity, where the requesting includes sending the subject-supplied credit card information and the independent occupancy address information to the authorizing entity. The method can include generating a pass/fail indication responsive to verification information received from the authorizing entity, and sending the pass/fail indication to the client.