Pengxiang Ma and Ningyu He, The Hong Kong Polytechnic University; Zhongchun Cao, ChainFlag; Zihao Li, University of Electronic Science and Technology of China and The Hong Kong Polytechnic University; Xiapu Luo, The Hong Kong Polytechnic University

Pengxiang Ma and Ningyu He, The Hong Kong Polytechnic University; Zhongchun Cao, ChainFlag; Zihao Li, University of Electronic Science and Technology of China and The Hong Kong Polytechnic University; Xiapu Luo, The Hong Kong Polytechnic University
