BlockZone: A Blockchain-Based DNS Storage and Retrieval Scheme

DNS is an important infrastructure of the Internet, providing domain name resolution services. However, there is a serious centralization problem in terms of DNS architecture and management. To solve the problem of DNS centralization, we propose a blockchain-based decentralized DNS storage and parsing scheme BlockZone. Without changing the existing DNS protocol, BlockZone takes DNS name server as the node in the blockchain network and each node stores all the record information of the whole network. The record in the node ensures consistency by consensus algorithm. We propose an improved PBFT consensus algorithm for DNS, which has the advantages of fast consensus and low traffic. Experiments show that the parsing and authentication efficiency of BlockZone is 37.8% higher than that of DNSSEC, and the improved consensus algorithm is improved by 4 orders of magnitude in efficiency than PoW-based consensus algorithm.