When Type Hashes Lie: EIP-712 Implementation Errors in DeFi - Evidence from Comprehensive Solidity Code Review

Large-scale automated validation of 288 EIP-712 implementations reveals 91.7% contain TYPEHASH errors. Identifies three production patterns and the self-consistency trap. Now includes comprehensive Chinese translation and expanded n=288 sample analysis.

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Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-07-18
DOI
https://doi.org/10.5281/zenodo.21405973
Primary Topic
Big Data and Digital Economy
Type
preprint
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When Type Hashes Lie: EIP-712 Implementation Errors in DeFi - Evidence from Comprehensive Solidity Code Review

Shiqiang Chen
Zenodo (CERN European Organization for Nuclear Research)
Big Data and Digital Economy
preprint

When Type Hashes Lie: EIP-712 Implementation Errors in DeFi - Evidence from Comprehensive Solidity Code Review

Shiqiang Chen
preprint en

Abstract

Large-scale automated validation of 288 EIP-712 implementations reveals 91.7% contain TYPEHASH errors. Identifies three production patterns and the self-consistency trap. Now includes comprehensive Chinese translation and expanded n=288 sample analysis.

Zenodo (CERN European Organization for Nuclear Research)
Chinese Academy of Sciences (CN), Institute of Information Engineering (CN)
Big Data and Digital Economy
DOIOpen Access PDFOpenAlex
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When Type Hashes Lie: EIP-712 Implementation Errors in DeFi - Evidence from Comprehensive Solidity Code Review — Shiqiang Chen · Zenodo (CERN European Organization for Nuclear Research) (2026) | TGRS Research Map | TGRS