Abstract:

Since 2009, blockchain was used for base record technology of account book in BitCoin. It has graduated as a new distributed, non-centralized and non-trust solution after several years. Especially in last two years, blockchain has gradually gotten out of BitCoin as an independent innovation hot point. It creating a new distributed data storage technology with an innovation change on system/program design. Maybe, it will subvert the organizational model of current business community in future. So it received more and more attention from Business and Technology communities. This article do more research and investigation on the design and implementation of blockchain. Include security investigation for blockchain and blockchain related application, and the security architecture compare for blockchain security system and traditional centralized mode system. Did the summaries for the advantages and disadvantages of the blockchain, and more actual application scenarios are derived.

Key words: block chain, decentralization, security architecture, application scenario