A notary seal is an official stamp used by a notary public to authenticate documents. It typically includes the notary's name, the state where they are commissioned, and their commission number. This seal serves as a mark of credibility, indicating that the document has been properly notarized. When a notary applies their seal to a document, it signifies that they have verified the identity of the signers and witnessed the signing process. This helps prevent fraud and ensures that the document is legally binding. Notary seals are essential in various legal and financial transactions, such as real estate deals and contracts.