Many people suggest to keep your bitcoin holdings secret, thus preserving the anonymity of bitcoin to a certain degree.
But then you get sportsbooks asking for photos and passports, and god only knows what else.
If a sportsbook wants all this, I respectly suggest they change to fiat.
You need to mention the name of the sportsbooks so people here, know what's coming to them in case they encounter this, you can opt to pick other sportsbook so your account and details will not be revealed, we all know many gamblers here like to remain anonymous.