Bicorn: An optimistically efficient distributed randomness beacon

ePrint Report: Bicorn: An optimistically efficient distributed randomness beacon

Kevin Choi, Arasu Arun, Nirvan Tyagi, Joseph Bonneau

We introduce Bicorn, an optimistically efficient distributed randomness protocol with strong robustness under a dishonest majority. Bicorn is a "commit-reveal-recover" protocol. Each participant commits to a random value, which are combined to produce a random output. If any participants fail to open their commitment, recovery is possible via a single time-lock puzzle which can be solved by any party. In the optimistic case, …

beacon distributed eprint report fail kevin lock protocol puzzle random randomness recover recovery report robustness single under value