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In this work, we explore the class of Ethereum smart contracts called theadministrated ERC20 tokens. We demonstrate that these contracts are moreowner-controlled and less safe than the services they try to disrupt, such asbanks and centralized online payment systems. We develop a binary classifierfor identification of administrated ERC20 tokens, and conduct extensive dataanalysis, which reveals that nearly 9 out of 10 ERC20 tokens on Ethereum areadministrated, and thereby unsafe to engage with even under the assumption oftrust towards their owners. We design and implement SafelyAdministrated - aSolidity abstract class that safeguards users of administrated ERC20 tokensfrom adversarial attacks or frivolous behavior of the tokens' owners.

Decentralization Paradox: A Study of Hegemonic and Risky ERC-20 Tokens