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/ Signature Verifier

Original Message

Signature (65 bytes hex)

Expected Signer Address (Optional)

/ Selected Tool

Signature Verifier

Verify Ethereum signatures (ECDSA)

■ 01

What is ECDSA?

ECDSA (Elliptic Curve Digital Signature Algorithm) is the signature scheme used in Ethereum. It allows you to prove that a message was signed by the holder of a specific private key without revealing the key itself.

■ 02

How does it work?

Message Signing When you sign a message in Ethereum, you're creating a cryptographic proof that you control a particular address. The signature can be verified by anyone to recover the signer's address. Signature Format…

■ 03

Sample Cases

Covers Example message and Example signature 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

// npm install viem

import { recoverMessageAddress, verifyMessage } from 'viem';

// Message and signature from signing
const message = "Hello, Ethereum!";
const signature = "0x1234567890abcdef..."; // 65-byte signature

// Recover signer address from signature
const recoveredAddress = await recoverMessageAddress({