1. University of Illinois at Urbana-Champaign, Champaign, IL, USA
2. University of Illinois at Urbana-Champaign, Champaign, USA
3. Shanghai Jiao Tong University, Shanghai, China
4. The Initiative for CryptoCurrencies and Contracts, New York City, USA
5. HashCloack Inc., Toronto, Canada
6. Google, Mountain View, United States of America
7. University of California, Berkeley, Berkeley, United States of America
8. UC Berkeley, Berkeley, USA
9. University of Illinois at Urbana-Champaign, Champaign, United States of America