Robustness of Proof of Team Sprint (PoTS) Against Attacks: A Simulation-Based Analysis

Abstract

This study evaluates the robustness of Proof of Team Sprint (PoTS) against adversarial attacks through simulations, focusing on the attacker win rate and computational efficiency under varying team sizes (\( N \)) and attacker ratios (\( \alpha \)). Our results demonstrate that PoTS effectively reduces an attacker's ability to dominate the consensus process. For instance, when \( \alpha = 0.5 \), the attacker win rate decreases from 50.7\% at \( N = 1 \) to below 0.4\% at \( N = 8 \), effectively neutralizing adversarial influence. Similarly, at \( \alpha = 0.8 \), the attacker win rate drops from 80.47\% at \( N = 1 \) to only 2.79\% at \( N = 16 \). In addition to its strong security properties, PoTS maintains high computational efficiency. We introduce the concept of Normalized Computation Efficiency (NCE) to quantify this efficiency gain, showing that PoTS significantly improves resource utilization as team size increases. The results indicate that as \( N \) grows, PoTS not only enhances security but also achieves better computational efficiency due to the averaging effects of execution time variations. These findings highlight PoTS as a promising alternative to traditional consensus mechanisms, offering both robust security and efficient resource utilization. By leveraging team-based block generation and randomized participant reassignment, PoTS provides a scalable and resilient approach to decentralized consensus.