OTCoin is a digital currency for transaction mining launched by OTC.BI over-the-counter trading platform based on mathematics and Cryptography. OTCoin is not controlled by any party alone, but multi-user participation in the transaction operates in a decentralized way with blockchain technology. OTCoin has issued a total of 3 billion pieces, and will never be issued more. The way to obtain it is through transaction mining and transaction after going online by members of OTC.BI over-the-counter trading platform, Mining refers to trading on the OTC. BI platform (all currencies except OTCoin), where miners (users) increase the total transaction volume of the platform through trading. The trading system automatically calculates mining rewards for miners and distributes OTCoin....