Those original documents must then be sent to the notary public who must also sign the original documents and affix the notarial seal or stamp. With real estate transactions, ...

The seal serves much like a notarial seal on civic documents. It is impressed on official California documents dealing with commissions, pardons and papers signed by the governor. California’s Great ...

The idea is, the signature and notarial seal of the notary on the document may be considered proof that the person who signed it did it in person and that it was his or her voluntary act or will.