Not all Bitcoin casinos are regulated, however many are. Hybrid casinos in particular (casinos that offer both crypto and fiat gambling), are very likely to be licensed. Some of the most popular licenses obtained by Bitcoin casinos are from the Malta Gaming Authority, the Government of Curacao, and the Swedish Gambling Authority. Some Bitcoin casinos may choose to remain unlicensed, so that they can continue offering their games to players from all over the world without any restrictions.