1. School of Business and Economics, Humboldt-Universität zu Berlin, Dorotheen Str. 1, Berlin 10117, Germany
2. Department of Management Sciences, City University of Hong Kong, 7-268, Lau Ming Wai Academic Building, Kowloon Tong, Kowloon, Hong Kong
3. Humboldt-Universität zu Berlin, IRTG 1792, Dorotheen Str. 1, Berlin 10117, Germany
4. Wang Yanan Institute for Studies in Economics, Xiamen University Xiamen, N114, Economics Building, Xiamen 361005, People's Republic of China
5. School of Business, Singapore Management University, 50 Stamford Road, 178899, Singapore
6. Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, Prague 121 16, Czech Republic
7. Department of Information Management and Finance, National Chiao Tung University, Hsinchu City, Taiwan, ROC
8. Weizenbaum-Institut, Hardenbergstraße 32, Berlin 10623, Germany
9. UCL Centre for Blockchain Technologies, UCL Computer Science, Malet Place, London WC1E 6BT, United Kingdom