Yes, this site scam, don't play.
I have 0.12 BTC in my balance and I can not withdraw (minimum is 0.05) . I depoist 0.05 BTC and receive 0.05 BTC bonus, and then I bet total 36 * 0.05 ( for withdraw bonus ) and I can not withdraw. It said invalid data
BIg scam site, banned him please
fairproof.com scam, fairproof.com scam, fairproof.com scam, fairproof.com scam, fairproof.com scam, fairproof.com scam, fairproof.com scam don't play in this site
Please PM your permanent link and we'll study your case.
If everything was legit you will successfully withdraw your funds.
Next time don't hesitate to contact support firstly.
I really don't think it is a matter of 'studying' the case but rather a matter of confirming the OP did in fact deposit funds to your site. You should be able to keep track of all the deposit addresses that are given to users. The OP can simply give you the deposit address that he sent bitcoin to and you should be able to look up his account. He then should only need to sign a message from an address that sent bitcoin to the deposit address to confirm his identity