The general rule is that a marriage is deemed to be legal if it was properly performed pursuant to the laws, customs, codes, of the location of the marriage, by a person authorized to marry people! But, what concerns me is the underlying reason for your question? Are you fearful that you made a mistake and want an annulment? Or, that you are still married to someone else from years ago? Please provide more details as to exactly WHY you are asking your question (if you feel comfortable doing so in a public forum such as this) OR seek the services of an attorney to discuss the same as that is protect by privilege! As an aside, if you found my direction helpful, and if you feel appropriate; could you be so kind as to designate my answer as the “best” answer to your question? I truly wish you the best of luck!
Call the marriage bureau and ask them.
Generally, however, I doubt they do any serious check, since you can personally apply for a marriage license over the counter and get married the same day.
If you have concerns about them checking, but still want to be married, then give them the shortest amount of time as possible.