Research on modeling of electric power transaction process based on block chain technologyQingli Hao, Guolong Yin, Pengtao Xu, Chao Zhang, Xiaozhen Ma, Jing Zhang, Yongbing Yan and Hongjie TianE3S Web Conf., 185 (2020) 01069DOI: https://doi.org/10.1051/e3sconf/202018501069