Just finished checking one new (or actually pretty old) dice site. Welcome Primedice!
Primedice is provably fair Bitcoin dice site with a long history. It was founded in May 18, 2013 being one of the first Bitcoin dice websites.
Primedice has a Curacao casino license and supports also Ethereum, Litecoin, Dogecoin, Bitcoin Cash and Ripple besides Bitcoin. There is also a cool Bitcoin faucet that increases as your game level increases.