Characterizing Transfer Graphs of Suspicious ERC-20 Tokens

• URL: http://arxiv.org/abs/2501.11668v1
• Date: Mon, 20 Jan 2025 18:49:01 GMT
• Title: Characterizing Transfer Graphs of Suspicious ERC-20 Tokens
• Authors: Calvin Josenhans, Andrey Kuehlkamp, Jarek Nabrzyski,
• Abstract summary: This paper seeks to understand how fraudulent schemes may be characterized and develop methods for detecting them. A common use of smart contracts is implementing fungible tokens with the ERC-20 interface. By parsing the event logs emitted by these ERC-20 contracts over 20 different periods of 100K blocks, we construct token transfer graphs for each of the available ERC-20 tokens.
• Score: 0.2621730497733947
• License:
• Abstract: Ethereum is currently the second largest blockchain by market capitalization and a popular platform for cryptocurrencies. As it has grown, the high value present and the anonymity afforded by the technology have led Ethereum to become a hotbed for various cybercrimes. This paper seeks to understand how these fraudulent schemes may be characterized and develop methods for detecting them. One key feature introduced by Ethereum is the ability to use programmable smart contracts to execute code on the blockchain. A common use of smart contracts is implementing fungible tokens with the ERC-20 interface. Such tokens can be used to impersonate legitimate tokens and defraud users. By parsing the event logs emitted by these ERC-20 contracts over 20 different periods of 100K blocks, we construct token transfer graphs for each of the available ERC-20 tokens on the blockchain. By analyzing these graphs, we find a set of characteristics by which suspicious contracts are distinguished from legitimate ones. These observations result in a simple model that can identify scam contracts with an average of 88.7% accuracy. This suggests that the mechanism by which fraudulent schemes function strongly correlates with their transfer graphs and that these graphs may be used to improve scam-detection mechanisms, contributing to making Ethereum safer.

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