this is a decent site altogether for anyone who is looking for bitcoin casinos, nice games and overall feel but the problem is that they require you use their own token for better  bonuses and exclusive perks which is a big con in my eyes. also i didn't find info about a license. 

Refreshing Bitcoin casino, I hope they add more games soon!

One aspect that makes Bitbook so special is the cryptocurrency itself called BXK which offers many advantages. Players who buy and use the Bitbook token to bet get access to a 25% discount on bets that is exclusive to the platform. In addition to this, there are additional bonuses that include free lottery tickets along with a 10% refund that is paid each month for a player's losses. All deposits along with withdrawals are instant with zero fees attached.
There are many great blockchain gaming platforms, but many of them do not have attractive promotions. Bitbook is different in that it has one of the largest welcome and matched deposit bonus rewards in the industry. New subscriptions are applied for the welcome bonus which will match any deposit made using the BXK token by a whopping 150%. For those who wish to bet with Bitcoin on the platform, they can double their money using the 100% reward.
In addition to the 150% Bitbook welcome bonus, there are others available as well, such as the second deposit bonus that matches deposits by 50%. There are also favorable terms attached to these Bitbook.ag promotions compared to other platforms as the reinvestment amount is set to 25 times the amount.
I just tried the site to see how it worked, but I must say that I am still studying it.

Reasonable choice of games and a solid Bitcoin site overall. I am not a huge fan of the Bitbook token idea however and it seems that you have to use it to get all the best perks of this site. I am also not sure that this casino is licensed by any major regulator, which is always a bit worrying. That said, I have not had any issues with the casino so far and things seem fine so far. 

I came across Bitbook Casino looking for somewhere new to play with some Bitcoin I had left in my wallet. The site immediately caught my attention with an impressive design, having all of their slots listed with big pics, making it so much easier to pick a game you might like. The casino took a bit longer to load initially, which had me concerned for a little while, but everything was smooth sailing after that, so I’m really glad I stuck around. Had no problem using their token as opposed to what others said, the offers are worth it.

good providers of games for a crypto casino, Betsoft plus iSoftBet slots!