18 USC 2257 is the thing that should worry you the most!!!
It doesn't matter if they are pictures of you naked on your site and you have your ID proving you're over 21 in your back pocket if you don't have the required paperwork and if the address to keeper of records is not posted on your site you are in violation.
It doesn't matter if the images are softcore of women who look 90 years old and would not be considered obscene in the bible belt.
If you do not have the required paperwork complying with 18 USC 2257 record keeping requirements and displayed on your site for each and every set of nude images on your site you are in violation of the law, PERIOD END OF STORY. This law is not ambiguous about this at all.
The FEDs don't have to prove obscenity with this law, they only have to prove you didn't obey the law by having/displaying the info.
The FEDs may never come to get you........................How lucky do you feel I hear that FED prisons are better than state anyway!!!
To stay out of jail "GO HERE!!!"
One more thing for all of those content stealers out there.
"ARE YOU GOING TO REMEMBER WHERE YOU STOLE YOUR SITES IMAGES WHEN THEY COME FOR YOU?
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Unless you shoot the images yourself and keep proper documentation or license them for a reputable company that does you are not safe from club FED.