Sex for pay, even when it's done through a legal loophole, isn't something you attach your real name to. You won't find his name associated with his job if he's some kind of a professional dom, he'd use a stage name of some sort, even if he's not advertising purely by word of mouth.
It sound a whole lot like the measures that escorts and call girls undertake. You know, the legal kind of whore whose boss generally prefers they not die or forcefully become a drug addled crackwhore. Never use your own place, don't use your personal phone, avoid going somewhere unknown like the client's place if possible, always have a witness or contact who knows where you are and who you're with that you can trust, plus extra disclaimers for being a guy/dom who's vulnerable to metoo accusations.
All I'm saying is if he isn't a call guy/professional dom, he's going through all the steps and hassle you would go through to do that, but not getting paid for it. And also has a job he evades identifying that is hard to find online and is flexible enough not to mind him running off for smash parties whenever.