What can we help you with?

  1. Homepage
  2. How-To Guides
  3. Getting Started
  4. How to sign & verify messages on Ethereum

How to Sign & Verify Messages on Ethereum

Last updated: October 26th, 2021

With Ethereum, signatures are a way of providing evidence that a specific user has access to a specific address.

For example, if user A wants to provide evidence to user B that user A has access to address X, they could sign a message with their private key, stating that user A has access to address X, then share the signed signature with user B. If the signature is correct, user B can verify that user A has access to address X without user A ever having to share their private key to user B.

Signing a Message

  1. Go to the message signing page on MyCrypto.
  2. Access your wallet.

accessing wallet

  1. Enter the message that you wish to use to prove your ownership of the address.

signing message

  1. Click the big blue "Sign Message" button.
  2. Your signed message will appear in a box below. It should look a bit like this:
  "address": "0x2a3052ef570a031400BffD61438b2D19e0E8abef",
  "msg": "This is proof that I, user A, have access to this address.",
  "sig": "0x4e1ce8ea60bc6dfd4068a35462612495850cb645a1c9f475eb969bff21d0b0fb414112aaf13f01dd18a3527cb648cdd51b618ae49d4999112c33f86b7b26e9731b",
  "version": "2"

You can use this message as proof that you own an address, and share it with anyone.

Verifying a Message

  1. Go to the message verifying page on MyCrypto.
  2. Enter the signed message that you want to check, and click "Verify Message."

verifying message

If the signature is correct, a green bar will be displayed.

Didn't find what you were looking for? Contact Us

MyCrypto is an open-source tool that allows you to manage your Ethereum accounts privately and securely. Developed by and for the community since 2015, we’re focused on building awesome products that put the power in people’s hands.

© 2022 MyCrypto, Inc.


Subscribe to MyCrypto

Get updates from MyCrypto straight to your inbox!

By submitting your email, you affirmatively agree to our Privacy Policy