Russian social media giant VKontakte has launched VK coins. But with regard to VK coins, the official information does not indicate that the currency is based on blockchain technology. But it does encourage users to "mining" VK coins through VK's service (a mobile app clicker game). As of April 5, more than 4 million users have extracted VK coins. Russian local media said that VK users have begun to use them to exchange legal currency or services, such as advertising. However, VK declined to comment on whether the VK currency is related to the cryptocurrency or blockchain, or whether there are plans related to the blockchain, and said that it does not "comment rumors."