I don`t think that it is a problem to hire a specialist that can find several advisers in cryptocurrencies and compare their information. In such way the OP will get combined advice from the several persons and he have a real man that made it. So he has a man with the face but not unknown nicknames like here. And the same time i don`t see any problem with cryptocurrencies convert. If the OP has his money in cryptocurrencies - he need to convert a small part of them to pay a consultant or he can pay him in cryptocurrencies too.
Showing to random people that you are holding very large amounts of cryptos is not safe, because they can try to scam, to steal or to extort you. In addition, it would be very hard to find several specialists of the matter to hire. How and where he could find them? If he places an advert here or on social medias, do you really think he will get serious candidates? Maybe he can try to look at
Wizard of Vegas for example, but meanwhile it's not a bad idea to ask for insights to the community here.
There are a lot of people that wager millions per year. You really don't have to worry about anything. I can hook up any high roller who would then deal directly with the VIP manager after the introduction. I'll just try to get a good deal. High rollers don't like to waste time doing the grunt work. I'll do that but don't want to waste the time of the VIP manager if someone isn't serious. That's why I'm looking for some type of betting history.