Русско-англо-русский юридический словарь

"Locus sigilli is a phrase that is most often abbreviated as “L.S.” “Locus sigilli” is a Latin phrase meaning “the place of the seal.” These traditional letters appear on the notarial certificates to show where the notary public’s embossed seal should be placed or fixed. In case of a rubber-stamp seal ( the seal should be placed near the abbreviation “L.S")

The notarial certificate evidencing the taking of an acknowledgment is commonly known as a “certificate of acknowledgment” or sometimes simply as an “acknowledgment.” (22 CFR § 92.32)

We can define a notarial certificate as a written statement or document, signed and sealed by a notary, certifying the facts of a notarial act. (PandaDoc)

The notarial certificate of birth is a document produced at the applicant's request by a civil law notary in [the People's Republic of China]. Typically a notarial certificate of birth will state the applicant's name, date o[f] birth, place of birth and parents' names, together with the name of the notary, place and date of notarization. It will usually include a photograph of the applicant with a wet seal of the notary. (Immigration and Refugee Board of Canada)