As far as I know (if everything is legal: D), then if you transfer some kind of physical prize to a financial one, you have to pay a tax, usually on paper they somehow solve the tax problem if, for example, you win a car, however so not in all countries.
The game on cryptocurrencies has been underway for a long time.
I met cryptocurrencies in mid-2017, and I quickly found interesting places for myself to play.
It is not clear where such information came from, I think it would be tangible, I saw many casino applications, but at the same time they did not refuse the PC version
This is just an advertisement for specific slots, maybe even at the time of this advertisement there are “tightened up” chances.
So overall, nothing special
It is always worth reading the user agreements, terms and conditions, but very few people do it, recently when I read one of the agreements, a lot of typos were found, and when I informed the administration, the answer was: You are the first to write about this.
Which confirms my words. Take care of yourself.