Cornucopia: Distributed randomness beacons at scale

ePrint Report: Cornucopia: Distributed randomness beacons at scale

Miranda Christ, Kevin Choi, Joseph Bonneau

We propose Cornucopia, a distributed randomness beacon protocol combining accumulators and verifiable delay functions. Cornucopia extends the Unicorn protocol of Lenstra and Wesolowski, utilizing an accumulator to enable efficient verification by each participant that their randomness contribution has been included in the beacon output.
The security of this construction reduces to a novel property of accumulators, insertion security. We first show that not all accumulators are …

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