I do not see that the KYC test has a positive effect on the process of legalizing bitcoin by states. The fact that during confidential transactions with confidential information will disappear and most of its holders will be known to the state for collection of taxes, will not solve the main problems of bitcoin for states - its decentralized and unmanageable nature and its great volatility. It is these two factors - uncontrollability and volatility of bitcoin that are the cause of the bad process of legalizing bitcoin and all the crypto-currency from the states.