门罗币跨链溯源的实证分析
An Empirical Analysis of Monero Cross-Chain Traceability
摘要：
门罗币是一种以隐私为中心的加密货币，通过在交易中花费的每一笔真实输入中添加诱饵，使支付变得不可追踪。2017年的两项研究发现了区分诱饵和真实输入的方法，这使得大多数交易都可以追溯。自那时以来，对协议进行了一些修改，但尚未重新评估其有效性。此外，人们对门罗币交易在硬分叉链上的可追溯性知之甚少。我们形式化了一种新的跟踪门罗币交易的方法，该方法基于分析货币硬分叉。我们使用这种方法对来自Monero、MoneroV和Monero Original区块链的数据进行（被动）可追溯性分析，发现只有少量输入是可追溯的。然后，我们使用的结果来估计最近的交易的已知算法的有效性，并发现它们并没有显着优于随机猜测。我们的研究结果表明，门罗币目前基本上不受已知被动攻击媒介的影响，并且对应用于其他加密货币的跟踪和追踪方法具有抵抗力。
英文摘要：
Monero is a privacy-centric cryptocurrency that makes payments untraceable by adding decoys to every real input spent in a transaction. Two studies from 2017 found methods to distinguish decoys from real inputs, which enabled traceability for a majority of transactions. Since then, a number protocol changes have been introduced, but their effectiveness has not yet been reassessed. Furthermore, little is known about traceability of Monero transactions across hard fork chains. We formalize a new method for tracing Monero transactions, which is based on analyzing currency hard forks. We use that method to perform a (passive) traceability analysis on data from the Monero, MoneroV and Monero Original blockchains and find that only a small amount of inputs are traceable. We then use the results to estimate the effectiveness of known heuristics for recent transactions and find that they do not significantly outperform random guessing. Our findings suggest that Monero is currently mostly immune to known passive attack vectors and resistant to tracking and tracing methods applied to other cryptocurrencies.
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