追踪比特币新币走向:一种基于交易网络结构特征识别矿工的方案

Tracking the circulation routes of fresh coins in Bitcoin:a way to identify coinminers based on transaction network structural properties

比特币是近年关注度最高的虚拟电子货币,"挖矿"是在此生态中最重要的获利方式之一.本文通过分析比特币交易间的引用关系,追踪区块链中挖矿所得的新币走向,构建新币流通网络.通过对比不同矿池所挖得的新币流通网络,设计了启发式算法识别比特币矿工群体,并以此推断矿池常见的收益分配方式.此外,本文还对矿工群体规模的逐年增长趋势进行了刻画.

Bitcoin draws the highest degree of attention among cryptocurrencies,while coin mining is one of the most important fashion of profiting in the Bitcoin ecosystem.This paper constructs fresh coin circulation networks by tracking the fresh coin transfer routes through analysis of the transaction referencing in Bitcoin blockchain.A heuristic algorithm is proposed to identify coin miners by comparing coin circulation networks from different mining pools and thereby infer their commonly used mining rewards distribution schemes. Furthermore,this paper characterizes the increasing trend of Bitcoin miner numbers during recent years.