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Based on their T&C, I don't find about "KYC Requirement" went play on their casino site.
Also if you look at the account setting, we don't see a "KYC Option" at there. So i think BSpin don't need a KYC went using their casino.
So how do they handle this promotion? I or any person can benefit from promotions repeatedly by opening multiple memberships. Doesn't that look right?