Verify the authenticity of signed messages and typed data to ensure they originated from the expected address.

​
Prerequisites

You need Web3 libraries configured with Para authentication.

Setup Web3 Libraries

​
Verify Personal Signatures

import { ethers } from "ethers";

async function verifyPersonalSignature(
  message: string,
  signature: string,
  signerAddress: string
) {
  const recoveredAddress = ethers.verifyMessage(message, signature);
  const isValid = recoveredAddress.toLowerCase() === signerAddress.toLowerCase();
  console.log("Signature valid:", isValid);
  return isValid;
}

​
Verify Typed Data Signatures (EIP-712)

import { ethers } from "ethers";

async function verifyTypedDataSignature(
  domain: any,
  types: any,
  value: any,
  signature: string,
  signerAddress: string
) {
  const recoveredAddress = ethers.verifyTypedData(domain, types, value, signature);
  const isValid = recoveredAddress.toLowerCase() === signerAddress.toLowerCase();
  console.log("Signature valid:", isValid);
  return isValid;
}

​
Next Steps

Sign Messages

Sign Typed Data

Execute Transactions