Proof of Execution

Proof of execution is a notarial act used when the principal who signed a document is unable or unwilling to appear before the notary. A subscribing witness — someone who was present when the principal signed — appears before the notary and swears under oath that: (1) they personally know the principal, (2) the principal is the person described in the document, (3) they witnessed the principal sign or heard the principal acknowledge signing, and (4) the principal requested them to sign as a witness (Civil Code §1197, Code of Civil Procedure §1935).

Major restriction on document types: Proof of execution by subscribing witness cannot be used for any of the following (Government Code §27287, Civil Code §1195(b)):
• Power of attorney
• Quitclaim deed
• Grant deed (except trustee's deed from foreclosure or deed of reconveyance)
• Mortgage
• Deed of trust
• Security agreement
• Any instrument affecting real property
• Any instrument requiring a thumbprint in the notary's journal

Exam Tip: The identity chain for proof of execution is: notary → credible witness (whom notary personally knows) → subscribing witness → principal. The subscribing witness cannot be identified by simply showing ID to the notary. The document-type restriction is heavily tested — in practice, proof by subscribing witness is limited to a narrow range of documents that do not affect real property and do not require thumbprints.