List of 4byte identifiers for EVM smart contract functions
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Dec 21, 2024
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4byte
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Ethereum Signature Database
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Nov 22, 2025 - Rust
A Symbolic Ethereum Virtual Machine (EVM) bytecode interpreter, parser and decompiler, along with several other utils for programmatically extracting information from EVM bytecode.
cli parser typescript bytecode decoder decompiler ethereum blockchain disassembler control-flow-graph solidity signatures web3 evm yul 4byte
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May 19, 2026 - Solidity
💻 Look up an Ethereum function signature by the 4 bytes of its hash
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Mar 24, 2022 - JavaScript
Hardhat plugin to sync selectors / signatures to various directories
ethereum smart-contracts blockchain signature selector selectors solidity signatures solc hardhat function-signature function-selector openchain 4byte hardhat-plugin signature-database
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Aug 13, 2023 - TypeScript
Decode EVM calldata without an ABI: recursive multicall/Safe decoding, unlimited-approval flags. Browser-only.
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Oct 9, 2026
Decode raw EVM transaction calldata into human-readable function calls — selector resolution via 4byte.directory + built-in signatures
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Aug 1, 2026 - Python
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