Bitcoin is a digital currency that's sent from user to user without the need for an intermediary. This crypto currency may not be regulated by an administrator, but it's a common payment method in casinos because it's easy to deposit and withdraw funds. Online casinos that accept bitcoins include 7 Spins, Bovada, Spartan, and Jumbabet.
The Grand Duchy of Luxembourg is in Western Europe. It is a mix of French and German cultures, and is a small landlocked country, home to the European Court of Justice. Mobile online gambling is known to be illegal for residents, but they are rarely prosecuted, and the local government is unwilling to block international online casinos.