AsyRand: An Asynchronous Randomness Beacon via Look-Ahead Agreement↗ (원문, 새 창)

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Asynchronous randomness beacons must preserve agreement and sustain output generation despite Byzantine faults while preventing adversarial bias. We present $\mathsf{AsyRand}$, a publicly verifiable randomness beacon that combines publicly verifiable secret sharing (PVSS) with local-coin asynchronous binary agreement (ABA). Its Producer-Consumer design overlaps PVSS preparation with beacon generation and consumes one accepted PVSS object per output. Column agreement amortizes coordination across