Marriages are registered in all states of the world. The forums which register marriages contain original marriage certificates or at least copies of the same. They are available as public documents. These can be obtained by merely following the process of law of that particular forum.
For example mostly marriages are registered at the Arbitration Councils in Pakistan. Copy of Marriage certificates are present in the record rooms of arbitration councils. These copies are easily obtainable by the legal process.
If you wish to obtain copy of Marriage certificate of anyone anywhere, you can contact us at firstname.lastname@example.org