A novel hybrid share reporting strategy for blockchain miners in PPLNS pools
A novel hybrid share reporting strategy for blockchain miners in PPLNS pools
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针对 PPLNS 矿池中区块链矿工的新型混合份额报告策略
DOI：
10.1016/j.dss.2019.01.006
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发表时间：
2019-03
影响因子：
7.5
通讯作者：
Wang Fei-Yue
中科院分区：
文献类型：
--
作者：
Qin Rui;Yuan Yong;Wang Fei-Yue
在区块链矿池挖矿中，PPLNS（Pay-Per-Last-N-Shares）是实践中最常用的奖励机制之一，矿池将根据矿工的股票数量在lastNshares中的比例，将奖励分配给报告股票数量落在lastNshares中的矿工。在PPLNS机制中，矿工的报告策略可能会通过确定最后N股中出现的股票数量对其奖励产生重大影响。因此，如何战略性地向矿池报告他们的股份已成为矿工面临的重要决策。本文研究了PPLNS矿池中的份额报告问题，建立了一个矿工优化收益的份额报告模型。我们还提出了一种新的混合份额报告策略的矿工基于我们的模型，并设计计算实验来评估我们的混合份额报告策略。实验结果表明，混合策略优于两个基线共享报告策略在实践中常用的。这项工作是首次尝试研究PPLNS矿池中矿工面临的份额报告问题，它可以为区块链矿池矿工在做出份额报告决策时提供重要的管理见解。
In blockchain pool mining, Pay-Per-Last-N-Shares (PPLNS) is one of the most commonly used reward mechanisms in practice, in which the mining pools will distribute the reward among the miners whose reported shares fall in the lastNshares, according to the proportion of the number of shares of the miner in the lastNshares. In the PPLNS mechanism, miners' reporting strategies may impose significant impacts to their rewards via determining the number of shares appeared in the lastNshares. As such, how to strategically report their shares to the pool has become an important decision faced by miners. In this paper, we study the share reporting problem in PPLNS pools, and establish a share reporting model for a miner to optimize his/her rewards. We also propose a novel hybrid share reporting strategy for the miner based on our model, and design computational experiments to evaluate our hybrid share reporting strategy. The experimental results show that the hybrid strategy outperforms two baseline share reporting strategies commonly used in practice. This work is the first attempt to study the share reporting issue faced by miners in PPLNS pools, and it can provide important managerial insights for blockchain pool miners when making their share reporting decisions.
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