Sign Bitcoin transaction with several inputs using bitcoinj. Broadcasting of transaction failed

Good day! I'm working with low level API to make tx and sign it offline. But after all preparations I try to broadcast it and than i get an error from network:

16: mandatory-script-verify-flag-failed (signature must be zero for failed check(multi)sig operation)

First of all I create tx without signing inputs, and after that i'm trying to sign every input with my priv keys.

Here is raw tx before signing :

01000000028bcf82619e93eb92cc78d5bb0b7b22d6ee419820428402e721fbac1386c9673f0000000000ffffffffd50ea1cd97af5295cddcd4f0c7c0d531fed5683bde80af45ede25a0571c31add0100000000ffffffff02087f0300000000001976a9146fb643fe63bcc6c352899298d6072cc5d4178c0f88acfa6b0100000000001976a914196e59ee4c151e742af69bca308fc1b4445c577288ac00000000

Parsing tx from the https://live.blockcypher.com/btc/decodetx/ :

{
    "addresses": [
        "16Yb7QP5jVmjXvHawH2ZA66k1b46FmtmE3", 
        "13KU69194fJj13G1SajUWokudsuekhT1kw", 
        "1BBgML68FuyRwU8RzwYn1FvqAXDDSgjVKC"
    ], 
    "block_height": -1, 
    "block_index": -1, 
    "confirmations": 0, 
    "double_spend": false, 
    "fees": 55194, 
    "hash": "2010928be1525a89aae1e0ece367757f6deb3754bfc4c891ffddbad403ecc3c9", 
    "inputs": [
        {
            "addresses": [
                "16Yb7QP5jVmjXvHawH2ZA66k1b46FmtmE3"
            ], 
            "age": 534819, 
            "output_index": 0, 
            "output_value": 251628, 
            "prev_hash": "3f67c98613acfb21e7028442209841eed6227b0bbbd578cc92eb939e6182cf8b", 
            "script_type": "pay-to-pubkey-hash", 
            "sequence": 4294967295
        }, 
        {
            "addresses": [
                "13KU69194fJj13G1SajUWokudsuekhT1kw"
            ], 
            "age": 534818, 
            "output_index": 1, 
            "output_value": 125872, 
            "prev_hash": "dd1ac371055ae2ed45af80de3b68d5fe31d5c0c7f0d4dccd9552af97cda10ed5", 
            "script_type": "pay-to-pubkey-hash", 
            "sequence": 4294967295
        }
    ], 
    "outputs": [
        {
            "addresses": [
                "1BBgML68FuyRwU8RzwYn1FvqAXDDSgjVKC"
            ], 
            "script": "76a9146fb643fe63bcc6c352899298d6072cc5d4178c0f88ac", 
            "script_type": "pay-to-pubkey-hash", 
            "value": 229128
        }, 
        {
            "addresses": [
                "13KU69194fJj13G1SajUWokudsuekhT1kw"
            ], 
            "script": "76a914196e59ee4c151e742af69bca308fc1b4445c577288ac", 
            "script_type": "pay-to-pubkey-hash", 
            "value": 93178
        }
    ], 
    "preference": "high", 
    "received": "2018-08-05T18:04:52.877018121Z", 
    "relayed_by": "54.162.141.93", 
    "size": 160, 
    "total": 322306, 
    "ver": 1, 
    "vin_sz": 2, 
    "vout_sz": 2
}

Here is my code of signing every input:

for (int i = 0; i < transaction.getInputs().size(); i++) {

    TransactionInput transactionInput = transaction.getInput(i);
    String addressFromUtxo = mUTXOs.get(i).getAddress();
    byte[] privKeyBytes = getPrivKeyBitesForAddress(addressFromUtxo);
    ECKey ecKey = ECKey.fromPrivate(privKeyBytes);

    Script scriptPubKey = ScriptBuilder.createOutputScript(Address.fromBase58(params, mUTXOs.get(i).getAddress()));

    Sha256Hash hash = transaction.hashForSignature(i, scriptPubKey, Transaction.SigHash.ALL, false);
    ECKey.ECDSASignature ecSig = ecKey.sign(hash);   
    TransactionSignature txSig = new TransactionSignature(ecSig, Transaction.SigHash.ALL, false);
    transactionInput.setScriptSig(ScriptBuilder.createInputScript(txSig, ecKey));
}

//serialization and broadcasting
byte[] bytesRawTransaction = transaction.bitcoinSerialize();
String rawTransaction = HEX.encode(bytesRawTransaction);
broadcastTx(rawTransaction);

And here how my raw tx looks after the signing:

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

Parsing tx from the https://live.blockcypher.com/btc/decodetx/ :

{
    "addresses": [
        "16Yb7QP5jVmjXvHawH2ZA66k1b46FmtmE3", 
        "13KU69194fJj13G1SajUWokudsuekhT1kw", 
        "1BBgML68FuyRwU8RzwYn1FvqAXDDSgjVKC"
    ], 
    "block_height": -1, 
    "block_index": -1, 
    "confirmations": 0, 
    "double_spend": false, 
    "fees": 55194, 
    "hash": "26859671de7bd5f0ab758517d90dcb2ef7c8a8a331a2d4fc59c7d98e07857d09", 
    "inputs": [
        {
            "addresses": [
                "16Yb7QP5jVmjXvHawH2ZA66k1b46FmtmE3"
            ], 
            "age": 534819, 
            "output_index": 0, 
            "output_value": 251628, 
            "prev_hash": "3f67c98613acfb21e7028442209841eed6227b0bbbd578cc92eb939e6182cf8b", 
            "script": "473044022054720cc14562000ed1a6fa7952d2343bef48e2fa4fd0f1c1894579026ae83692022042735beb03c4d53c8d72126e1e4e8bee7acd5530284b05d6707a4e71cc891e9a01210312e1997fc0cb4c037c94885e7e4a8d0eca9d5cff8628cc3d870e5c158c9b0901", 
            "script_type": "pay-to-pubkey-hash", 
            "sequence": 4294967295
        }, 
        {
            "addresses": [
                "13KU69194fJj13G1SajUWokudsuekhT1kw"
            ], 
            "age": 534818, 
            "output_index": 1, 
            "output_value": 125872, 
            "prev_hash": "dd1ac371055ae2ed45af80de3b68d5fe31d5c0c7f0d4dccd9552af97cda10ed5", 
            "script": "47304402206a70b6dacea9e9435c21fe920471daccf2edb636592b9d9163b1f5d740e582e102203416f80e9859fcfacc9f41ea3e04774ef47c9b0b9fa5a61f2b77dffee4c2710e012103522a472dd00a929e0f0980b98eb6a0d10a6e5a6ff7d45709cdb9f022b881ca66", 
            "script_type": "pay-to-pubkey-hash", 
            "sequence": 4294967295
        }
    ], 
    "outputs": [
        {
            "addresses": [
                "1BBgML68FuyRwU8RzwYn1FvqAXDDSgjVKC"
            ], 
            "script": "76a9146fb643fe63bcc6c352899298d6072cc5d4178c0f88ac", 
            "script_type": "pay-to-pubkey-hash", 
            "value": 229128
        }, 
        {
            "addresses": [
                "13KU69194fJj13G1SajUWokudsuekhT1kw"
            ], 
            "script": "76a914196e59ee4c151e742af69bca308fc1b4445c577288ac", 
            "script_type": "pay-to-pubkey-hash", 
            "value": 93178
        }
    ], 
    "preference": "high", 
    "received": "2018-08-05T10:44:42.584042561Z", 
    "relayed_by": "54.162.141.93", 
    "size": 372, 
    "total": 322306, 
    "ver": 1, 
    "vin_sz": 2, 
    "vout_sz": 2
}

And after all above I got:

16: mandatory-script-verify-flag-failed (signature must be zero for failed check(multi)sig operation)

Please, help me, what I'm doing wrong???

Timur Panzhiev

Posted 2018-08-05T18:07:50.427

Reputation: 21

That error means that the signature is invalid. Make sure that you are using the correct private keys and signing the correct thing. – Andrew Chow – 2018-08-05T18:13:54.923

I`m understand that signatures are invalid, but in what way I should to sign tx with several inputs? – Timur Panzhiev – 2018-08-05T18:23:53.520

Sign Bitcoin transaction with several inputs using bitcoinj. Broadcasting of transaction failed

Answers