multisignature transaction, unable to sign #12239

Describe the issue Unable to sign a multisignature transaction from 2 members.

What behavior did you expect? Being able to sign the transaction.

What version of Bitcoin Core are you using, where did you get it (website, self-compiled, etc)? v0.15.1

I'm running bitcoind v0.15.1 on a ubuntu server. On my OS X I run the same version of bitcoin-qt. Both are running in testnet mode.

I created a multisignature address (2 of 3 members are able to spend output of it).

Private keys of all members and adresses used to generate the multisignature address:

role: seller

- address: mffSY9hWk75wuwJV33A2A9BzUTSacBSjyQ
- Public Key: 02efb108823eb92640ff2c236bd56db8a207a9d24d341a5df9ea0d533804865551 
- Private Key: cUNwo1GSKuuozKdECPF2CURBxgbNpBU7Y2zzgG5hbcUa4oKQQLaP

role: buyer

- address: mxuNdPbdhPjQztj3iRXWRWpdqgZDEk1W9H
- Public Key: 020343ed06bcc3da89492d09b61d97236914be9a49b549a133aa2461169c0300c6
- Private key: cMkwkVZvJeSbAnyksMWjVmbH5rfZUHrniEuGy7d1GjspnSqZqKN4

role: admin

-  address: mzphB1YDJeZLKf6u4bPxYhoTTZhwP3mVGf
- Public Key: 021a1ae7bbcd0972b17b9bb0ed22642f4f67e64b7901fc2a41e7fa4eaf0cc7f388
- Private Key: cUsdeDcSszM3mZ8dW4P8TvUTGAHF1dPHgJfyPiG3XYptmGzQndHE

./bitcoin-cli createmultisig 2 '["02efb108823eb92640ff2c236bd56db8a207a9d24d341a5df9ea0d533804865551","020343ed06bcc3da89492d09b61d97236914be9a49b549a133aa2461169c0300c6", "021a1ae7bbcd0972b17b9bb0ed22642f4f67e64b7901fc2a41e7fa4eaf0cc7f388"]'

returns:

{
  "address": "2Mxif1wuEXDdnKpNAM6gT2Updh1RhxWtxXJ",
  "redeemScript": "522102efb108823eb92640ff2c236bd56db8a207a9d24d341a5df9ea0d53380486555121020343ed06bcc3da89492d09b61d97236914be9a49b549a133aa2461169c0300c621021a1ae7bbcd0972b17b9bb0ed22642f4f67e64b7901fc2a41e7fa4eaf0cc7f38853ae"
}

Now after funding the address "2Mxif1wuEXDdnKpNAM6gT2Updh1RhxWtxXJ"... TXID: 0af26564867a2d59047bb78fe952713b090f8830ecae28119ee057bcffe382b2

 "vout": [
    {
      "value": 0.22000000,
      "n": 0,
      "scriptPubKey": {
        "asm": "OP_HASH160 3c08c0b5fcac2e08a2590956465b1037d81541b9 OP_EQUAL",
        "hex": "a9143c08c0b5fcac2e08a2590956465b1037d81541b987",
        "reqSigs": 1,
        "type": "scripthash",
        "addresses": [
          "2Mxif1wuEXDdnKpNAM6gT2Updh1RhxWtxXJ"
        ]
      }
    }, 

Using this vout and create a new output, to let's say the seller address:

creating this on bitcoind (using the wallet of admin):

./bitcoin-cli createrawtransaction '[{"txid":"0af26564867a2d59047bb78fe952713b090f8830ecae28119ee057bcffe382b2","vout":0}]' '{"mffSY9hWk75wuwJV33A2A9BzUTSacBSjyQ":0.200000000}'

returns:

0200000001b282e3ffbc57e09e1128aeec30880f093b7152e98fb77b04592d7a866465f20a0000000000ffffffff01002d3101000000001976a914019ae75fa7178659f2cf155c67594ade6e0aa6b588ac00000000

Trying to sign this with admin key:

bitcointestnet@vmd20621:~$ ./bitcoin-cli signrawtransaction 0200000001b282e3ffbc57e09e1128aeec30880f093b7152e98fb77b04592d7a866465f20a0000000000ffffffff01002d3101000000001976a914019ae75fa7178659f2cf155c67594ade6e0aa6b588ac00000000
{
  "hex": "0200000001b282e3ffbc57e09e1128aeec30880f093b7152e98fb77b04592d7a866465f20a0000000000ffffffff01002d3101000000001976a914019ae75fa7178659f2cf155c67594ade6e0aa6b588ac00000000",
  "complete": false,
  "errors": [
    {
      "txid": "0af26564867a2d59047bb78fe952713b090f8830ecae28119ee057bcffe382b2",
      "vout": 0,
      "witness": [
      ],
      "scriptSig": "",
      "sequence": 4294967295,
      "error": "Operation not valid with the current stack size"
    }
  ]
}

Any idea where things go wrong?

When you use the createmultisig command, it does not add the redeemScript to your wallet, it just gives it to you. You need to use addmultisigaddress if you want to add it to your wallet. Thus, your wallet doesn't understand how to sign for that address, you should add the optional extra parameter to signrawtransaction prevtxs in which you can include the redeemScript for the output, so it knows how to sign it.

In future, please direct usage questions to https://bitcoin.stackexchange.com not here, this is only for bugs/issues/feature requests for bitcoin core not for support :)

@MeshCollider

First of all thanks for your reply. Including the reedemScript of the input transaction or the whole JSON output of the input transaction?

Have you solved the problem

./qtum-cli --datadir=/mnt/qtumData/ --conf=/home/walletCore/.qtum/qtum.conf --gen --testnet signrawtransaction 02000000016e63b970813fba163b304d27856f94f0ca99f4e365477e48c0cc492e718ab1b70100000000ffffffff01802b530b000000001976a9140454a848cefef601f3b00fec91042826a6cc52e288ac00000000 { "hex": "02000000016e63b970813fba163b304d27856f94f0ca99f4e365477e48c0cc492e718ab1b70100000000ffffffff01802b530b000000001976a9140454a848cefef601f3b00fec91042826a6cc52e288ac00000000", "complete": false, "errors": [ { "txid": "b7b18a712e49ccc0487e4765e3f499caf0946f85274d303b16ba3f8170b9636e", "vout": 1, "witness": [ ], "scriptSig": "", "sequence": 4294967295, "error": "Operation not valid with the current stack size" } ] }