论文标题
利润滞后和替代网络采矿
Profit lag and alternate network mining
论文作者
论文摘要
对于采矿策略，我们将“利润滞后”的概念定义为在那一刻之后获得盈利所需的最短时间。我们计算封闭式的利润滞后表格以及“自私采矿”和“间歇性自私采矿”策略的收入比率。这证实了一些早期的数值模拟，并阐明了文献中对盈利能力的误解。我们还研究了经常来自叉子的采矿对加密货币，具有相同的采矿算法。这代表了可以使用我们定义的“替代网络挖掘”策略来利用的攻击媒介。我们为利润滞后的封闭形式和收入比率的这种策略比自私的采矿和间歇性的自私采矿更具利润。它也很难反驳，因为它不依赖于难度调整公式的缺陷，这是其他策略盈利能力的原因。
For a mining strategy we define the notion of "profit lag" as the minimum time it takes to be profitable after that moment. We compute closed forms for the profit lag and the revenue ratio for the strategies "selfish mining" and "intermittent selfish mining". This confirms some earlier numerical simulations and clarifies misunderstandings on profitability in the literature. We also study mining pairs of PoW cryptocurrencies, often coming from a fork, with the same mining algorithm. This represents a vector of attack that can be exploited using the "alternate network mining" strategy that we define. We compute closed forms for the profit lag and the revenue ratiofor this strategy that is more profitable than selfish mining and intermittent selfish mining. It is also harder to counter since it does not rely on a flaw in the difficulty adjustment formula that is the reason for profitability of the other strategies.
