I do not think that any site are going to give this proof here since it is pretty confidential on how much their balance. And if they give us the proof here then they will risk entire of their balance to be hacked by someone through any resources. So I think it is better to keep it secretly to everyone. And btw what is the point of knowing this proof? Are you going to win all of their balance? By knowing it then it become useless to us unless you are going to hack them
its very common for the gambling sites to announce their bankroll or at least post proof of funds
like signing an address that holds coins , for example - this goes a long way to build trust for the site ,especially if it is new
the point of knowing the proof is that I could see that they , actually , have coins to pay out in case I win big
would they pay or not , it is a completely different matter , but ...
gambling sites that allow invetments are not afraid of hacks somehow and are holding hundreds of bitcoins in their wallets , pretty publicly
Of course it is very common but there is no way that any site will show how much bitcoin they holding publicaly. This is what we expect to but in reality they always denying it unless like what you said about allowing investment so it will be showing the real data on the site but still we never know how much bankroll that they are actually holding on
That is why we need some reviews from others before we play on any site because it is important thing not to lose some big amount there. Anyway big bankroll or not does not really matter, you just need to adjust your base bet so it will pretty easy yo maintain your win and loss