I've been attempting to broadcast transactions to both Kovan & Rinkeby, I'm building and signing them offline and using the Etherscan API to broadcast the signed transactions. I see them in the explorer labelled as:

Pending This TxHash was found in our secondary node and should be picked up by our indexer in a short while.

They sit there for between 4-8 hours then just vanish. I've tried increasing the gas price and gas limit a few times. And I'm assuming because they get accepted by the API at all I've correctly signed them (I'm using an external method to sign the hash and stitch together the transactions). I'm not sure if there's a way to validate the transaction to see if the one I've created is valid and properly signed.

The most recent one I've tried to broadcast to Kovan is:


I've tried to decode it with https://flightwallet.org/decode-eth-tx/ and it seems to look good.

  "nonce": 1,
  "gasPrice": 50000000000,
  "gasLimit": 100000,
  "to": "0x4d6bb4ed029b33cf25d0810b029bd8b1a6bcab7b",
  "value": 95000000000000000,
  "data": "",
  "from": "0xe6652ca72b030b1c426b3e9654bd02e466943d54",
  "r": "60023895819271c2b033820c913c9c6326325dbea272b09429d886833d5a900c",
  "v": "77",
  "s": "4ccf4a6a3710806b2d137f4460551a8a2ef6627b1da81fbd971c4a18aba8a880"

I'd really appreciate if anyone had some advice or tools I could use to debug this, or sees something incorrect in my encoding. Thanks.

  • if you have a nonce higher than 1 with your account, that transaction would never pass. The vanishing part is probably due to some synchronization issues/features with each of your testnets. I would check my nonce first then seek the debugging. – Kaki Master Of Time Apr 1 '19 at 20:03
  • Perfect, thank you. I thought I could just start at 1 for the first transaction, the flightwallet.org decoder was showing null when I used 0, this confused and threw me off the correct path. Seeing it to 0 made it go through immediately. – Matt Apr 1 '19 at 20:32

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.