I don’t remember ever being asked if I’m the same girl from the photos, but I know a few escorts who’ve experienced that. Most of the time, the men asking for proof photos seem to be just photo collectors and time wasters. I wouldn’t bother replying to them.
You can get a blue verification mark next to your TAG username if you meet a TAG staff member in person. That might help.
You can also get verified on Preferred411. They ask for your ID, but it’s a popular verification tool in the P4P world.
To avoid getting your photos stolen.. I’d go for a big, transparent watermark. It can still be photoshopped.. but I don’t know why anyone would be stealing photos from a Tokyo review forum. Most providers’ images seem to get stolen from their social media.