I think there is a difference between telling your kids what happened and showing them the primary papers which was very much about you and your life at the time, not theirs; if they couldn't read and understand it when it happened; if they didn't have to sign on the dotted line, etc., it's not about them. It is probably public record somewhere too that they can get now that they are adults if they're interested.

However, if I really wanted to share it with them; I'd make copies and cut or block out the information relative to my own history; that isn't their business, or at least not at this time. They need to know what their father was like in their life and if they won't accept the truth from you telling them and want to see the official paper, then make them a copy but block out your own info. You can leave them the original in your papers for after your death when it can't hurt you anymore.

You should not be asked to hurt yourself in order to assist anyone else with their "curiosity", even your children. If my parent told me X was so, I would believe that parent unless they were in the habit of lying to me? The paper blocked bad things from happening to them and was used to protect them. It would be different if it were a hospital report or something specifically about them and their life. They grew up not in the custody of their father so there isn't anything in the paper that can "help" them much with that. I can understand perhaps wanting to see the paper, the "realness" of it but I wouldn't show them parts that isn't about them.