States are delayed with the legalization of bitcoins and other crypto currency not because of the KYC check, but because the crypto currency can not be controlled and because of its high volatility. Checking KYC does not fix these problems. Inside its country, KYC can still bring certain results, but crypto-alaith owners can turn to exchangers outside the state, and to such that there will not be any verification of KYC. The KYC check only helps the government track our actions and does not solve anything else.