I have looked to split and sell my etc and have successfully split with test transactions replaying on classic, however the main transaction has not replayed for 24 hours and I would like to force a replay. I have both blockchains available.

I have tried taking the output of web3.eth.getTransaction(hash) on ETH and tried recreating it with ethereumjs-tx signed and unsigned on classic without much success.

I haven't seen a method to get the raw hex of a transaction in geth to inject it via web3.eth.sendRawTransaction

My alternative is to perform the same transaction I did on ETH but on ETC

  • 3
    Why don't you just send the same transaction on the other chain? That seems far simpler than trying to replay Oct 22, 2016 at 3:48

1 Answer 1


Lets say we have this tx: https://etherscan.io/tx/0x1f3f3ced1fde1cbc638b3e1ba2b12d890157977208442e8686d03fc4d332225c

  1. Take same input raw data and resubmit it without changing chaindId: Lets take Raw tx data:


So we get:


now lets try sending it to POA.network chain cURL:

curl --data '{"method":"eth_sendRawTransaction","params":["0xf8708352d1d685028fa6ae0083015f909465f4dc1a4aef2842c1ae61dfa3db7a69f25b7aff8802e45e9ccc5e1af28026a0ba87b88da31453501f9738e35d6c4f416524f92ea215d6f07b3df5f4216a41f8a0578c288d369a6f9ee073e25e745888f9099e54b604411bce1b456a6dcf3937af"],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST https://poa.infura.io

Response: {"jsonrpc":"2.0","error":{"code":-32010,"message":"Invalid chain id."},"id":1} It's because POA.network chain is protected with EIP-155 and doesn't allow us to send it.

So, lets take same tx and change chainId value to resubmit tx. which if we ask rpc server getTransactionByHash

curl -X POST --data '{"jsonrpc":"2.0","method":"eth_getTransactionByHash","params":["0x1f3f3ced1fde1cbc638b3e1ba2b12d890157977208442e8686d03fc4d332225c"],"id":1}' -H "Content-Type: application/json" -X POST https://mainnet.infura.io | jq '.'


  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "blockHash": "0x35af3597e1496acef6eb972c68243709ffc214c4b4a6f160581c4e670f67dd94",
    "blockNumber": "0x5ab068",
    "from": "0x829bd824b016326a401d083b33d092293333a830",
    "gas": "0x15f90",
    "gasPrice": "0x28fa6ae00",
    "hash": "0x1f3f3ced1fde1cbc638b3e1ba2b12d890157977208442e8686d03fc4d332225c",
    "input": "0x",
    "nonce": "0x52d1d6",
    "to": "0x65f4dc1a4aef2842c1ae61dfa3db7a69f25b7aff",
    "transactionIndex": "0x52",
    "value": "0x2e45e9ccc5e1af2",
    "v": "0x26",
    "r": "0xba87b88da31453501f9738e35d6c4f416524f92ea215d6f07b3df5f4216a41f8",
    "s": "0x578c288d369a6f9ee073e25e745888f9099e54b604411bce1b456a6dcf3937af"

Now, lets re-send same tx onto ETC chain with ethereumjs-tx: POA.network has chainId = 99

const EthereumTx = require('ethereumjs-tx')
const chain = 99;

const txParams = {
  nonce: '0x52d1d6',
  gasPrice: '0x28fa6ae00',
  gasLimit: '0x15f90',
  to: '0x65f4dc1a4aef2842c1ae61dfa3db7a69f25b7aff',
  value: '0x2e45e9ccc5e1af2',
  data: '0x',
  chainId: chain,
  r: "0xba87b88da31453501f9738e35d6c4f416524f92ea215d6f07b3df5f4216a41f8",
  s: "0x578c288d369a6f9ee073e25e745888f9099e54b604411bce1b456a6dcf3937af",
  v: chain * 2 + 35

const tx = new EthereumTx(txParams)

const serializedTx = tx.serialize()
console.log('0x' + serializedTx.toString('hex'))

Please notice how we re-calculated v value: v: chain * 2 + 35 OR you can do: v: chain * 2 + 36 (reference: https://github.com/ethereum/EIPs/blob/master/EIPS/eip-155.md)

Now lets run it: node txGenerator.js and we get


so lets send it to rpc node

curl --data '{"method":"eth_sendRawTransaction","params":["0xf8718352d1d685028fa6ae0083015f909465f4dc1a4aef2842c1ae61dfa3db7a69f25b7aff8802e45e9ccc5e1af28081e9a0ba87b88da31453501f9738e35d6c4f416524f92ea215d6f07b3df5f4216a41f8a0578c288d369a6f9ee073e25e745888f9099e54b604411bce1b456a6dcf3937af"],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST https://poa.infura.io

response: {"jsonrpc":"2.0","error":{"code":-32010,"message":"Insufficient funds. The account you tried to send transaction from does not have enough funds. Required 209385510302513906 and got: 0."},"id":1}

So we have successfully changed V value, but the account doesn't have funds to make a tx

Similar way you can use for any other CHAIN-IDs

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