1. Zhao, F., Zhou, W.: Analysis of digital copyright protection based on block chain technology. Sci. Technol. Law (2017)
2. Zheng, Z., Xie, S., Dai, H., Chen, X., Wang, H.: Blockchain challenges and opportunities: a survey. Int. J. Web and Grid Serv. 14, 352–375 (2017)
3. Li, X., Jiang, P., Chen, T., Luo, X., Wen, Q.: A survey on the security of blockchain systems. Future Gener. Comput. Syst. (2017)
4. Jia, Y.: Research on network copyright transaction based on blockchain technology. Technol. Publ. 07, 90–98 (2018)
5. Swan, M.: Blockchain: Blueprint for a New Economy. O’Reilly Media, Sebastopol (2015)