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

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Prerequisites

You need Web3 libraries configured with Para authentication.

Setup Web3 Libraries

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Verify Personal Signatures

  • Ethers.js
  • Viem
  • Wagmi
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;
}

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Verify Typed Data Signatures (EIP-712)

  • Ethers.js
  • Viem
  • Wagmi
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;
}

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Next Steps

Sign Messages

Sign Typed Data

Execute Transactions

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