Free Coin, a centralized cryptographic currency based on BitCoin, where a server controls transactions and creation of coins based on hashing challenges, that change in difficulty based on the time current challenges are solved. It features completely secure communication with Transport Layer Security and Elliptic Curve Digital Signature Algorithm (ECDSA) for the generation of X509 certificates for miners. Also features Mutual Authentication, Two-factor Authentication and completely anonymous communications between server and clients.