Hmmmmm.....
It might be possible to make a system where you run your pictures through a "mark" batch, where it save info on each image on the server in a database and then after that it would be possible for the webmaster to upload scanned copy of whatever for each set / folder.
Then make a review part that have a review method kinda like a TGP review script where you associate the correct ID's with the correct sets / folders. And then we could just hand out logins to the server to the government upon request.
I could do it for a small fee of $15,000 for a multi server license
Seriously I will look into it and I might be able to come up with a solution. A HUGE central server with a monthly rent from the users could be possible