Verify ethereum wallet ownership remotely.

wallet-address-signature-demo.js

/**
First install and run ganache.
> npm install ganache --global
> execute this code https://gist.github.com/bertolo1988/096d436f072d2513eb4ff1cd83201c47
**/

const Web3EthAccounts = require('web3-eth-accounts');

const PORT = 61063;

async function run() {
  const accounts = new Web3EthAccounts(`ws://localhost:${PORT}`);

  const account = accounts.create();
  console.log(`Created account with address: ${account.address}`);
  const message = `This is my address ${account.address}`;
  const signatureObj = accounts.sign(message, account.privateKey);

  const recovered = accounts.recover(message, signatureObj.signature);

  console.log(`Address ownership is confirmed for address ${recovered}`);
}

run()
  .then(() => {
    console.log('done');
  })
  .catch((err) => {
    console.error('failed', err);
  });