Re: The Bitcoin Blackjack ♦️ Bitjack - Please do not play for the moment
I like the concept of your casino, but the bad thing is you'll be hard or impossible to get a gambling license. This make people is hard to trust your sites since there're so many thing need to be answered in public.
1. How we can sure the user ID generated on your URL is safe? is there any way to gambling?
2. Can you add 2FA before user can log in with unique code generated/UID?
3. Your slogan Hack us you mean you're pretty sure your code is secured, but why you still faced a vulnerability in your casino?
Just for information you can use this sites https://www.toolsley.com/hash.html to validate the cards hash, just copy the deck cards and you will see an exact hash on SHA256 to validate.
1. How we can sure the user ID generated on your URL is safe? is there any way to gambling?
2. Can you add 2FA before user can log in with unique code generated/UID?
3. Your slogan Hack us you mean you're pretty sure your code is secured, but why you still faced a vulnerability in your casino?
Just for information you can use this sites https://www.toolsley.com/hash.html to validate the cards hash, just copy the deck cards and you will see an exact hash on SHA256 to validate.
Than you
, Yes the gambling license it will be hard 
I'll ask you questions:
1) No the there is no way to verify it. It's just a bunch of random data. The id can be anything, even you can create you own, just modify the string and it will be another account.
maybe i'll change it, I think all the ids can start from a seed so anybody can very them.
2) Interesting
it can be a good addition.3) Hehe, I can not guarantee the security of the site at this moment , I'm working alone in this project and just on my free time