I've created a transaction on the TESTNET and am trying to push it via BlockCyphers facility at:


when I make the attempt, I get the following error:

Error validating transaction: Error running script for input 0 referencing 261190892daa2c9aaaf25c20624f7f2941d2ad58dec883b0c929d1fa9306fd57 at 0: Script was NOT verified successfully..

here's the transaction. I don't see what the matter with it is and not sure I understand the error. can anyone help?

    "addresses": [
    "block_height": -1, 
    "block_index": -1, 
    "confirmations": 0, 
    "double_spend": false, 
    "fees": 12375, 
    "hash": "463372d7a8f456c882179635aabbeca4146396b1f81c05699a2e885e3f84d6e6", 
    "inputs": [
            "addresses": [
            "age": 1657999, 
            "output_index": 0, 
            "output_value": 5000000, 
            "prev_hash": "261190892daa2c9aaaf25c20624f7f2941d2ad58dec883b0c929d1fa9306fd57", 
            "script": "48304502210093b8ff9180a8a31a5ee7b0fb6c560aef888a3d53576e530cb4601dce2d3c51da02204fd8a28743f1d1100a2f56428e743501091e833550df6cf540bad4f5248a6d3c012102d794c7e1a8068782ef6ee68acf9f6ad9c84c78349671c1a7bf60418a8e1ed108", 
            "script_type": "pay-to-pubkey-hash", 
            "sequence": 4294967295
    "outputs": [
            "addresses": [
            "script": "a9149f792783320ffb5a4f3ee4c69525d4932ac0497087", 
            "script_type": "pay-to-script-hash", 
            "value": 500
            "addresses": [
            "script": "76a91486e0602ab38efd1811ff4db76f7d58c717c8598888ac", 
            "script_type": "pay-to-pubkey-hash", 
            "value": 4987125
    "preference": "high", 
    "received": "2020-01-10T05:09:49.945289619Z", 
    "relayed_by": "", 
    "size": 224, 
    "total": 4987625, 
    "ver": 2, 
    "vin_sz": 1, 
    "vout_sz": 2

- Addendum I -

to help narrow down the solution, here's the code I'm using to produce the transaction: I first produce an address where to receive some coin:

const btc = require('bitcoinjs-lib');
const bip39 = require('bip39');
const bip32 = require('bip32');

var mnem = 'my-12-word-bip39-seed-phrase'
var root = = bip32.fromSeed(
  bip39.mnemonicToSeedSync(mnem), bitcoin.networks.testnet
var p = "m/44'/1'/0'/0/0"
var pubkey = root.derivePath(p).publicKey;
var {address} = btc.payments.p2pkh({pubkey, network: btc.networks.testnet});

which yields mjGtZWXgPdbLUZYWtDqVTfbFieVzXFfSEj. I then send some coin to that address and attempt to create my transaction:

const CS = require('coinselect');
var feeRate = 55;
var env = 'test3'
var src = 'mjGtZWXgPdbLUZYWtDqVTfbFieVzXFfSEj'
var url = `https://api.blockcypher.com/v1/btc/${env}/addrs/${src}?unspendOnly=true`;
var o = await fetch(url).then(res => res.json());
var utxos = o.txrefs.map(o => ({
    txId: o.tx_hash, 
    vout: parseInt(o.tx_output_n), 
    value: parseInt(o.value)
var targets = [{address: '2N7nSZjfqikj4oVkCqaLB3CNMY3TA72PbNY', value: 500}];
var {inputs, outputs, fee} = CS(utxos, targets, feeRate);
if (ret.outputs) ret.outputs.forEach(o => {
    if (!o.address) o.address = 'msp7depXvcjLqykZxYVrWNG9QgKqLWWKEN';

// builds the transaction
var tx = new btc.TransactionBuilder(btc.networks.testnet);
inputs.forEach(o => tx.addInput(o.txId, o.vout));
outputs.forEach(o => tx.addOutput(o.address, o.value));
tx.sign(0, root);

from which I get a numerical string that converts to the above transaction. as can be seen, I'm using the same root to sign the transaction that was used to create the source address

  • Can you show or tell us how you are creating your transaction? Hard to say without more info.
    – m1xolyd1an
    Jan 10, 2020 at 5:36
  • yes. I will post code to help identify the issue
    – ekkis
    Jan 10, 2020 at 7:27

1 Answer 1


You have the wrong public key inside your SignatureScript:

Sig: 48-304502210093b8ff9180a8a31a5ee7b0fb6c560aef888a3d53576e530cb4601dce2d3c51da02204fd8a28743f1d1100a2f56428e743501091e833550df6cf540bad4f5248a6d3c-01
pubkey: 21-02d794c7e1a8068782ef6ee68acf9f6ad9c84c78349671c1a7bf60418a8e1ed108

The outpoint you are spending (2611[...]fd57:0) has the following PubkeyScript:


When the script runs it fails on 0x88 (or OP_EqualVerify) because HASH160 of the given public key (02d7[...]d108) is e652ed9163ac72629584ec92f47602cca45aa969

  • amazing feedback. I will try to follow your logic and figure it out. thanks a million
    – ekkis
    Jan 10, 2020 at 7:16
  • I've added code to the post to clarify how I'm building the transaction and what I'm using to sign
    – ekkis
    Jan 10, 2020 at 7:43
  • ok. I've come to understand what you said, and I gather that the field inputs[0].script is populated by my call to the transaction builder's sign() function. that doesn't match the script-pubkey that Block.io generated when I sent coins from there to my address mjGtZWXgPdbLUZYWtDqVTfbFieVzXFfSEj... so the question is why that would happen (and how to fix it)
    – ekkis
    Jan 10, 2020 at 8:00
  • FWIW, if I console.log(pubkey.toString('hex') I get: 026c4df6ad30a627bcb045faf913bb25aad26ef9d06a838f8465aead0a63c869ad... which seems to be the Hash160 of 15iBr8YmiWhXbCWRtZhuY9zowF412EwCypjNvY3xX79CX12K8ZH
    – ekkis
    Jan 10, 2020 at 8:06
  • as you can see, I'm passing the root directly to the signature function. originally I was converting to a WIF and then to a key, but I was told I could pass the root directly. see: github.com/bitcoinjs/bip39/issues/129#issuecomment-572365691
    – ekkis
    Jan 10, 2020 at 8:17

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