Tracking EOA state changes

[linxianxi]

There is no trigger for me to transfer from this address to another address or from another address to this address.
If I'm using it incorrectly, how can I listen for a transaction at an address. My goal is to listen for transactions on an account and update the balance. @ricmoo

const provider = new ethers.providers.JsonRpcProvider("......");
provider.on(
  {
    address: '0x....',
  },
  (...rest) => {
    console.log('change', rest);
  },
);

[ricmoo]

Filters only work for contracts, not for EOA (Externally Owned Accounts) controller by private keys. This is because each log in Ethereum optionally pays extra to have a given topic indexed, which includes it in a bloom filter. Since normal transactions are not paying this extra premium, they don't get added.

If you want to monitor an EOA, you should set a event listener for each block and check the balance and transactionCount; if they changed, then you can perform your action:

function getState(addr) {
  return resolveProperties({
    balance: provider.getBalance(addr),
    nonce: provider.getTransactionCount(addr)
  });
}

let lastState = await getState(addr);
provider.on("block", (blockNumber) => {
  const { balance, nonce } = await getState(addr);
  if (!balance.eq(lastState.balance) || nonce !== lastState.nonce) {
    // trigger event here...
  }
})

Make sense?