if you are of the age of majority, able to gamble, and have reported the bitcoin and intend to report your winnings, you should be fine. be sure to save records of your transactions within the casino, they usually have a csv you can export if you need to be able to provide a record. this is general for United States citizens; Im not quite sure of the specific laws that govern Oklahoma concerning gambling. alot of it has to do with the casino you used is licensed. if they are unregulated, that comes back on you a bit, but mostly reflects poorly on them. so use a decent casino, not a fly by night, that asks you for identity documentation (if they are legit, they pretty much have to conduct proper aml/kyc if they serve US citizens)