What are the benefits and uses of the Apostille Certificate? This certificate is very useful nowadays because the Apostille certificate is the signature of a Notary of any country where you are also heading. This certificate ensures the documents for acknowledgment in other foreign countries. It is quite helpful for you in trade, work, and life without any legal hassle. If you don’t know about this certificate, then you are at the right place. Apostille is a document paper transported between the countries mentioned in the earlier Apostillar Documentos in Trenton, NJ. It was asserted that when one gets an apostille on the report from one nation.