Abstract:This study designs and proposes a block chain architecture based on the domestic cipher algorithm — “DCchain”, and replaces ECC and SHA-256 of the international general cryptographic algorithm with SM2 and SM3, which realizes the autonomous control of the block chain architecture. At the same time, according to the current status of consensus algorithm compromise faced by block chain architecture, a “pluggable consensus” protocol is designed to solve the unalterable problem of consensus algorithm faced by block chain architecture. Experimental results show that “DCchain” and ordinary block chain architecture have higher consensus efficiency and lower resource cost under the condition of consistency and effectiveness.