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/ Bytecode Differ

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Bytecode 1 (hex)

Bytecode 2 (hex)

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Bytecode Differ

Compare contract bytecodes to verify implementations

■ 01

What is Bytecode?

Bytecode is the compiled machine-readable code that runs on the Ethereum Virtual Machine (EVM). When you deploy a smart contract, the Solidity code is compiled into bytecode.

■ 02

How does it work?

Bytecode comparison analyzes two hex strings byte-by-byte, calculating similarity percentage and highlighting differences. The tool separates runtime code from metadata (CBOR-encoded compiler settings at the end). Ident…

■ 03

Sample Cases

Covers Compare BAYC & MAYC (RPC), Direct Bytecode Comparison, and Proxy Upgrade Verification so you can compare common inputs and outputs quickly.

/ Code

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/ Integration

Source code from the selected tool, shown here alongside the live version on the right.

/ Source Code

TypeScript

typescript

// No external packages needed - pure TypeScript

interface DiffResult {
  similarity: number;
  differences: number;
  matchingBytes: number;
  totalBytes: number;
}

// Compare two bytecode strings