The ONLY thing we collect about you is your public Ethereum address (0x..) you use to sign in to the quiz, and the nick you assign to it. Also be aware that your public address WILL be visible to other Quiz participants via Etherscan since reward payouts go from a single Quiz address to all reward winners. If you care about your privacy you are ADVISED to use a fresh empty Ethereum account for interacting with the quiz. The way you top up that address with ETH (whether it is from a KYC service or not) is solely your responsibility, and we are not responsible if your identity is discovered by other Quiz participants inspecting your public address via Etherscan or other means.