Pure Bitcoin Sportsbooks in general don't have KYC.

The use of “pure” bitcoin sportsbooks is on the rise. A pure bitcoin sportsbook is one that does not have a fiat currency symbol on the site at all. Your funds are always in bitcoin and the bets are all taken in bitcoin. For example at the offshore sportsbook you would bet 100$ on Mc Gregor to win but at the pure bitcoin sportsbook you would bet 0.04 BTC on Mc Gregor to win.