Research cooperations of blockchain: toward the view of complexity network

Blockchain has critically influence on the implementations with respect to various territories. Recently, a flurry of papers, related to blockchain, are published under such background. However, most of them focus on specific topic due to space limitations, which cannot meet a high-level analysis. In this paper, lots of papers concerning blockchain, smart contracts and bitcoins are collected as many as possible such that we can carry on a comprehensive analysis on blockchain. More specifically, we construct keyword and author collaboration networks after removing the unrelated and low-quality works. Then we delve into the characteristics of complex networks, such as degree distribution, betweeness and closeness. We further present the networks with the help of visual tools like Pajek. Some unconspicuous hot topics are uncovered, with the help of complex network. These topics can in turn push the cross-field development of block chain technology, which may promote social development.

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