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HomeBitcoinsegregated witness - Guide Bitcoin transaction meeting: which output sort ought to...

segregated witness – Guide Bitcoin transaction meeting: which output sort ought to be used and the best way to compose a segwit subject?


I attempt to signal the next transaction:

020000000001012ca7795bc5ca18f0fd5a1ffb27f31d693b813f6b73b0fd31f4868f88f2d727980100000000ffffffff01e803000000000000160014c221f41ace22b7272a0ab3289bb2df3c36a9e0250000000000

Parsed:

{
"addresses": [
    "tb1q4rmg2ah0f5skv9yg43kwzgp457430navtmvwv6",
    "tb1qcgslgxkwy2mjw2s2kv5fhvkl8sm2ncp9xanaux"
],
"block_height": -1,
"block_index": -1,
"confirmations": 0,
"double_spend": false,
"charges": 0,
"hash": "01071bbceb3ab921873325bfadef0382fba0e6a74709f96cc4f8799af635cab3",
"inputs": [
    {
        "addresses": [
            "tb1q4rmg2ah0f5skv9yg43kwzgp457430navtmvwv6"
        ],
        "age": 2868502,
        "output_index": 1,
        "output_value": 1000,
        "prev_hash": "9827d7f2888f86f431fdb0736b3f813b691df327fb1f5afdf018cac55b79a72c",
        "script_type": "pay-to-witness-pubkey-hash",
        "sequence": 4294967295
    }
],
"outputs": [
    {
        "addresses": [
            "tb1qcgslgxkwy2mjw2s2kv5fhvkl8sm2ncp9xanaux"
        ],
        "script": "0014c221f41ace22b7272a0ab3289bb2df3c36a9e025",
        "script_type": "pay-to-witness-pubkey-hash",
        "worth": 1000
    }
],
"choice": "low",
"acquired": "2024-07-22T11:23:44.915543755Z",
"relayed_by": "44.192.67.93",
"measurement": 85,
"whole": 1000,
"ver": 2,
"vin_sz": 1,
"vout_sz": 1,
"vsize": 83

}

I take advantage of the next enter (index 1): https://blockstream.information/testnet/tx/9827d7f2888f86f431fdb0736b3f813b691df327fb1f5afdf018cac55b79a72c?develop

In line with this doc (https://github.com/bitcoin/bips/blob/grasp/bip-0143.mediawiki#user-content-Native_P2WPKH), the pre-image hash is:

Double SHA256 of the serialization of:
 1. nVersion of the transaction (4-byte little endian)
 2. hashPrevouts (32-byte hash)
 3. hashSequence (32-byte hash)
 4. outpoint (32-byte hash + 4-byte little endian) 
 5. scriptCode of the enter (serialized as scripts inside CTxOuts)
 6. worth of the output spent by this enter (8-byte little endian)
 7. nSequence of the enter (4-byte little endian)
 8. hashOutputs (32-byte hash)
 9. nLocktime of the transaction (4-byte little endian)
10. sighash sort of the signature (4-byte little endian)

My pre-image earlier than double sha256: 0200000032a17c92a47c5d4be8d6238132c848017f59ddacdac33b6c8d3c3ac4508a64ef3bb13029ce7b1f559ef5e747fcac439f1455a2ec7c5f09b72290795e706650442ca7795bc5ca18f0fd5a1ffb27f31d693b813f6b73b0fd31f4868f88f2d72798010000001976a914a8f68576ef4d21661488ac6ce12035a7ab17cfac88ace803000000000000ffffffff39faa805af04ff44720fa4e3de5476ee3cb833676531f48ad8ebf1e6d3001fc20000000001000000

After the signature: 020000000001012ca7795bc5ca18f0fd5a1ffb27f31d693b813f6b73b0fd31f4868f88f2d727980100000000ffffffff01e803000000000000160014c221f41ace22b7272a0ab3289bb2df3c36a9e025024830450221008dab2d55de0b7862b5f2f4bca0d8517915fad356ac38ae1f802034e6e9ec15aa02200f84f0f9e1a239a4bbd1bde5c3d8b0900d91ed0af9fd666922a794c182b658fb01210318e6317e8cb99d5be4fe863a63c9a365f58361f9196448c569a8ee3802ddd70300000000

Public Key: 0418e6317e8cb99d5be4fe863a63c9a365f58361f9196448c569a8ee3802ddd703cd7cd3767ad5330d27ef4db83adb02554decc2ed45fd7a16aa0cd663384693a7

Compressed Public Key: 0318e6317e8cb99d5be4fe863a63c9a365f58361f9196448c569a8ee3802ddd703

when I attempt to broadcast it, I get: error code: -25 error message: bad-txns-inputs-missingorspent

my questions are:

  1. What ought to be the output script 76a914 output_address 88ac, or 0014 output_address? Why does this doc describe the legacy format of the output https://github.com/bitcoin/bips/blob/grasp/bip-0143.mediawiki#user-content-Native_P2WPKH ?

  2. Is my pre-image right?

  3. is my segwit script for the enter right?

    {
    “stackitems”: “02”,
    “0”: {
    “measurement”: “48”,
    “merchandise”: “30450221008dab2d55de0b7862b5f2f4bca0d8517915fad356ac38ae1f802034e6e9ec15aa02200f84f0f9e1a239a4bbd1bde5c3d8b0900d91ed0af9fd666922a794c182b658fb01”
    },
    “1”: {
    “measurement”: “21”,
    “merchandise”: “0318e6317e8cb99d5be4fe863a63c9a365f58361f9196448c569a8ee3802ddd703”
    }

  4. What sort of public key should be used for handle era and segwit? Full or compressed?

  5. What else may be unsuitable right here? 🙂

Replace:

I diminished the output quantity:
Now pre-image is: 0200000032a17c92a47c5d4be8d6238132c848017f59ddacdac33b6c8d3c3ac4508a64ef3bb13029ce7b1f559ef5e747fcac439f1455a2ec7c5f09b72290795e706650442ca7795bc5ca18f0fd5a1ffb27f31d693b813f6b73b0fd31f4868f88f2d72798010000001976a914a8f68576ef4d21661488ac6ce12035a7ab17cfac88ace803000000000000ffffffff9ad50ca3ecd096afa146edd608c66350fd1546c36876d728004cc40428b474250000000001000000

The ultimate transaction is: 020000000001012ca7795bc5ca18f0fd5a1ffb27f31d693b813f6b73b0fd31f4868f88f2d727980100000000ffffffff019001000000000000160014c221f41ace22b7272a0ab3289bb2df3c36a9e02502483045022100d13d1f8ec58cf0df2963986f36977bd7d12304bc69d375c8f02d959b23261f3702206d2e7f08eb3f67cb517a0ae9515ff22d676b944cf564d40ab54df6410b92a5c101210318e6317e8cb99d5be4fe863a63c9a365f58361f9196448c569a8ee3802ddd70300000000

And the error is: {"code":-26,"message":"non-mandatory-script-verify-flag (Signature should be zero for failed CHECK(MULTI)SIG operation)"}

  1. How can I confirm the signature?
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