Get Transaction by Hash

Question

I'd like to get transaction info like sender and receiver address etc. by sending transaction hash as a parameter.

I did found "api.rpc.eth.getTransactionByHash" and tried to pass the hash but it was giving me "TypeError: api.rpc.eth.getTransactionByHash is not a function" error.

Here is my code:

const dotAddress = async () => {
  const wsProvider = new WsProvider("wss://rpc.polkadot.io");
  const api = await ApiPromise.create({ provider: wsProvider });
  const result = api.rpc.eth.getTransactionByHash(
    "0x334cdf788cd4449139ce7dc83bf448b5ef2addb88bf6b642ac43880137e75387"
  );
  console.log(result);
};

Any help appreciated, thank you!

Answer 1

The node itself doesn't index all transactions, it just stores blocks and states. You should fetch all blocks yourself and index transactions if you want to look them up that way.

Also note that transaction hash is not a unique identifier for a state transition (although is a unique identifier for a specific set of instructions and account context).