California What is Proof of Personal Service is a legal document that is used to prove that an individual was personally served with legal documents. This document is typically used when an individual is served a notice, summons, or other legal document by a process server or other authorized individual. It is important to note that proof of service is only valid if the server is a third party who is not affiliated with the party being served. Types of California What is Proof of Personal Service may include affidavits of service, declarations of service, and proof of service forms.