Simulation framework evaluates blockchain rewards, showing entropy as crucial for fairness in decentralized systems.
Designing fair and efficient blockchain reward mechanisms requires going beyond raw execution time to account for behavioral variability. We present a simulation framework for evaluating BCRPs using entropy as a systems-level indicator of reward fairness and stability. Three strategies are assessed on simulated miner profiles $$\:(n=100)$$ with log-normal execution times, Laplace-distributed noise, and tercile-based complexity classes: a classical execution-time baseline, “Mining $$\:2.0$$ ” (penalizing miner noise and task complexity), and “Adaptive $$\:2.0$$ ” (Mining $$\:2.0$$ with exponential time decay). Reward distributions are summarized via KDE and ECDF and scored using Shannon, Rényi \:(α\:=2) , Tsallis $$\:(q=2)$$ , and normalized Shannon entropies computed on discretized rewards ( $$\:20$$ bins). An interactive Shiny application accompanies the method for reproducible exploration without programming. Across simulations, Adaptive $$\:2.0$$ yields the most behavior-sensitive and equitable allocations, achieving the lowest entropy on all four metrics. Quantitatively, relative to the Traditional baseline, Adaptive $$\:2.0$$ reduces entropy by $$\:37.5%$$ (Shannon: \:2.684→\:1.678 ), $$\:37.1%$$ (Rényi- $$\:2$$ : \:2.218→\:1.396 ), $$\:21.0%$$ (Tsallis- $$\:2$$ : \:0.785→\:0.620 ), and $$\:14.6%$$ (Normalized: \:0.847→\:0.723 ); Mining $$\:2.0$$ achieves intermediate improvements of $$\:29.8%,\:31.7%,\:17.2%,$$ and $$\:13.9%,$$ respectively. These results provide an evidence-based, deployable framework for evaluating reward fairness in decentralized systems.
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