These days, financial regulators of various states are tightening the requirements for cryptocurrency exchanges. This is the reason why the exchanges are forced to implement an identity verifying procedure and set restrictions for anonymous users.
The regulators push the exchanges due to the fact that money is laundered through cryptocurrencies more and more now, cases of fraud and crimes sponsorship are becoming more frequent. To make cryptocurrency transactions more transparent, users’ verification is necessary. This is what the KYC procedure is used for.