After extensive research on Stormy Daniels I have concluded that she got the tattoos on her belly sometime before making films for Wicked Pictures. One of those films, Vendetta filmed in 2017 clearly shows the section of her belly with the tattoo BUT NO BRAND MARK. In case you think someone may have photoshopped her head onto someone else's body, check her right breast with its distinctive nipple shape. The brand is either photoshopped onto her photo, or it is a VERY RECENT addition. If you think her behavior seems to indicate she is being controlled by someone else, well, then maybe the brand is genuine and points TO THE CONTROLLER.
In addition, there are lots of earlier photos and videos with no tattoos at all. There is even one with a tattoo that seems to have been painted on because it is not there in the current tattoo. And her tattoo has an Alice in Wonderland feel to it that seems suspicious given what we know about mind control and MK Ultra.
Please not, that I did not either prove the brand is fake or prove that it is real. I only proved that if real, it is a VERY RECENT branding. And I raised suspicions about 3rd parties controlling her but unless we can show the brand is real and is actually an NXIVM brand, this is still speculation.