Onehash doesn't ask for KYC as far as I remember. I mean most bitcoin casinos and sportsbooks do not ask for KYC at all, I do not remember any casino that asks for KYC to be honest. I don't know if this was an attempt to do advertisement like ask a question from a newbie account and answer with your original account to make it look like it was legit but actually a self advertisement.

This could be a better question if there was only one or two but ALL sportsbooks in bitcoin world require only your bitcoin and nothing else, usually you don't even have to give them a nickname to gamble neither, just send money from a wallet and if you want they will send the money and the earnings back to your wallet without even registering. If they don't even ask for registering why would they ask for KYC type info.