BlackCoin black currency is issued by POW + POS currency, the initial issue of POW using the black currency, POW Pos POS 1% / year after the issue of black currency. In the past talk about machine gun pool color change, starting from the black coin, machine gun pool into the pursuit of many currency mining pool. Black coin buy pressure gun pool, you can mine the dug all the coins sold for bitcoin to buy black currency, making the black currency trading volume and prices are able to maintain stability. Recently the black currency community recently launched the world's first smart contract client BlackHalo