The documents required for marriage certificate attestation are sealed and signed by the appropriate authorities. A marriage certificate is a legal record that attests to the union of two people. This paperwork contains every aspect of the two people that were married. Attestation strengthens a marriage certificate's credibility when used overseas. It gives the spouses a chance to prove to the appropriate immigration officials that their marriage is real. When a person chooses to relocate with their partner for a profession or other purpose in a foreign country, the necessity for marriage certificate attestation arises.