Blockchain is a decentralized database which uses cryptography to make information difficult or impossible to change and hack. Blockchain technology is used in digital asset system such as bitcoin, litecoin, dogecoin and OKcoin, etc. This kind of digital asset is called cryptocurrency, because it uses cryptography to secure its transactions, to control the creation of additional units and to verify the transfer of assets. Mining is a competition of hardware performance. Polyhex offers multi miner with high hashrate for both new miners and power users.