SSA asks this information to make sure you get the maximum benefit you are eligible to receive under the law. They are not provided copies of domestic court orders unless it is provided by one of the parties involved. So, SSA has no way of knowing about the decree until you tell them, and until they see an original time stamped copy or certified copy, they are required to assume there is no such decree and are required their internal processing orders.
The exact answers to questions like this require more information than presented. The answer(s) provided should be considered general information. The information provided by this is general advice, and is not legal advice. Viewing this information is not intended to create, and does not constitute, an attorney-client relationship. It is intended to educate the reader and a more definite answer should be based on a consultation with a lawyer. You should not take any action that might affect your claim without first seeking the professional opinion of an attorney. You should consult an attorney who can can ask all the appropriate questions and give legal advice based on the exact facts of your situation. The general information provided here does not create an attorney-client relationship.
There are also benefits which may be payable to a previous spouse if they were married for 10 years or more.
Actual legal advice can only be provided by an attorney licensed in your jurisdiction, with experience in the area of law regarding your question. The information provided is for informational purposes only and is not legal advice.