At the blockchain 1.0 stage, the application of blockchain technology is mainly concentrated “Cryptocurrency”. After the launch of Bitcoinin 2009, the Bitcoin blockchain solved the “Double spend attack” and “Byzantine Generals Problem”, which really cleared the main obstacles of “Cryptocurrency”circulation, and that was highly sought after, like the “Dogecoin”, “Litecoin”and other knock-off cryptocurrency. They began to emerge in large numbers. Those“Cryptocurrency” are technically very similar to Bitcoin and their architecture can be divided into three layers: blockchain layer, protocol layer and currency layer. As the the most basic technology of the “Cryptocurrency” system, the blockchain layer is the core part. The main functions like system’s consensus process and message delivery are all achieved through blockchain. The protocol layer mainly provides some software service, regulation and so on. The final is currency layer which is mainly used as a value representation to transfer valuebetween users, equivalent to a currency unit.