Questions tagged [raw-transaction]
This tag should be used for questions related to raw transactions, bitcoin transactions that have been serialized for network transmission.
314
questions
0
votes
2answers
39 views
Is there a way to create a tx completely offline? Maybe with a script or cli commands?
I mean generating the transaction itself offline, assuming I know in advance how much bitcoin a UTXO has. In other words, without querying the network for the UTXO balance.
Then I also need to sign ...
0
votes
1answer
36 views
Why not use address in raw transaction instead of public key bytes
In raw transaction, bitcoin using bytes of the public key, like:
042daa93315eebbe2cb9b5c3505df4c6fb6caca8b756786098567550d4820c09db988fe9997d049d687292f815ccd6e7fb5c1b1a91137999818d17c73d0f80aef9
It ...
1
vote
1answer
15 views
How to deserialize the Transaction Count in a raw block?
In the bitcoin-book, the "Transaction Counter" part of a block is documented as being 1~9 bytes long instead of a fixed size.
How is this counter parsed from the raw data?
0
votes
1answer
24 views
What is the meaning of the “spent” attribute of a transaction output?
Looking at blockchain.info/tx/c52b....2b09?format=json, I see this:
[{
"spent":true,
"spending_outpoints":[
{
"tx_index":0,
"n":0
...
0
votes
1answer
16 views
How to use bitcoinj to transfer btc from p2sh-p2wpkh
I wrote the code for transmitting btc from p2sh-p2wpkh based on the information I found, but when I tried to broadcast the original transaction in https://live.blockcypher.com/btc-testnet/pushtx/, an ...
1
vote
0answers
25 views
How do i debug a bitcoin transaction
My main problem is understanding how to convert the response from bitcoin-cli "decoderawtransaction" to the script format i am supposed to put in the debugginng tool. i.e my problem is ...
1
vote
1answer
29 views
How to set a specific fee in satoshis per transaction?
I'm currently working on a personal project which is a small bitcoin exchange website, I've figured out how to create a raw transaction and broadcast it (createrawtransaction -> fundrawtransaction -...
2
votes
1answer
44 views
rust-bitcoin Non-canonical DER signature
I am trying to create a raw transaction spending a P2PKH output using rust-bitcoin, but whenever I am pushing the transaction to the testnet I receive the following error mandatory-script-verify-flag-...
0
votes
1answer
49 views
nLocketime error PUSH TRANSACTION ERROR: 64: NON-FINAL
Created nlocktime with electrum and used the time date feature which is using unix time instead of block height number for the locktime.
SO when pushing the raw tx before its time I get code 26 ...
1
vote
1answer
36 views
I encountered Signature is found in scriptCode exception when trying to make a BTC transfer
When I transferred a 0.001 BTC from miBEA6o6nZcaLZebR1dsDv4AMHRwJk1mbi to miV1sbmLM9fptRfWD5o8hs5L6ucUeJzmp5, the following error occurred: mandatory-script-verify-flag-failed (Signature is found in ...
0
votes
1answer
53 views
Ho do I generate the output script of a bitcoin transaction?
When I mean output script I mean the output script from step 11 from this question:
Redeeming a raw transaction step by step example required
Then the actual output script: 76 a9 14 ...
2
votes
1answer
117 views
How to convert PSBT transaction (base64) to raw/serialized (hex) transaction?
Bitcoin Core's CLI has a converttopsbt command used to convert from raw transaction to PSBT transaction but how is it possible to convert from PSBT transaction to raw transaction using Bitcoin Core (...
0
votes
1answer
39 views
signing multiple input raw transaction - algorithm and sighash types [duplicate]
I have an unsigned raw transaction:
...
0
votes
1answer
33 views
Segwit transaction - Non-canonical DER signature
Error (when sending)
error code: -26
error message:
64: non-mandatory-script-verify-flag (Non-canonical DER signature)
Transaction
...
0
votes
1answer
47 views
Practical tips for validating raw transactions
I have a protocol that creates a raw signed transaction that is then broadcast to the network. The transaction aims to send X BTC to a single address Z. The transaction is created with the help of ...
1
vote
2answers
45 views
Issues decoding the words to transaction hex
I had asked a question earlier about compressing the transaction hex as it was used in a project that involved sending text messages (160 characters limit per message):
Compress transaction hex string
...
0
votes
1answer
31 views
Error: Non-canonical DER signature when attempting to broadcast signed Segwit Transactions
I'm trying to build a native Segwit transaction programmatically, however, whenever I attempt to broadcast the transaction, it returns this error:
non-mandatory-script-verify-flag (Non-canonical DER ...
1
vote
1answer
66 views
Transaction Output Order
Suppose I generate a transaction with 5 outputs.
Is there a deterministic way to know how the outputs will be ordered on chain (their .n values) or will they simply appear in the order in which I ...
0
votes
2answers
66 views
Unable to createrawtransaction - “Input not found or already spent”
I need help. I have createrawtransaction as per the screenshot but then, unable to signrawtransactionwithkey, I have insert WIF Private Key and it state that "Input not found or already spent&...
0
votes
2answers
69 views
Compress transaction hex string
I realized transaction hex can be very long and you need it for broadcasting a tx using blockstream.info API:
https://blockstream.info/testnet/api/tx
https://github.com/Blockstream/esplora/blob/...
0
votes
0answers
42 views
How to Post Transaction in Bitcoin Network?
I need help here as it has been almost a week since I've been trying to figure this out. Fyi, I can get my Python Script running using "Mainnet" for Bitcoin Transaction that able to execute ...
1
vote
1answer
26 views
Transaction parsing - Satoshi value
how exactly is the satoshi value in a raw transaction calculated to decimal? Because on blockchain.info, I cannot figure out how they parse the raw transaction from that value to the JSON result. I ...
1
vote
0answers
28 views
Is there an API to create transactions in the Bitcoin blockchain with only a private key?
Is there an API to create transactions in the Bitcoin blockchain with only a private key?
I am new to working with the Bitcoin and using its API. So, I have searched the API documentation. And here is ...
0
votes
0answers
24 views
Transaction with multi input in concept
As a developer I know how to create a transaction with one input and one or multi outputs.
I know after we created a transaction with some of predefined parameters, we have to hash it and then we ...
0
votes
2answers
51 views
Why is 'script' used in a transaction instead of the output address?
I see transactions contain script for each output, but this "script" seems to be deterministically derived from the address associated with the output.
Why does the bitcoin protocol opt for the use ...
1
vote
2answers
756 views
Why raw Bitcoin transaction are in hex format?
Why are Bitcoin raw transactions in hexadecimal format? I am looking for scientific articles / books on this topic and I can't find anything, so my question is: why are they in hexadecimal and can ...
0
votes
1answer
54 views
Bitcoin core - creating transaction from UI without broadcasting it
I would like to use Bitcoin core's wallet UI to create a transaction but instead of broadcasting it I would like to get the underlying raw transaction.
Is there a way to do that?
I assume that ...
0
votes
1answer
84 views
How to calculate fee in BitcoinJS raw transaction?
I have a transaction with 3 inputs and 2 outputs. 1output is the recipient and the other output is change address. How should I calculate the fee and apply it to output?
0
votes
1answer
313 views
Send bitcoin with bitcoin core without syncing to network
I want to use bitcoin-core just for sending bitcoin from my address to another destination address. i don't need the huge history information of blockchain. In fact, I want to run a light-weight ...
0
votes
1answer
36 views
How do I calculate the sum of transaction inputs?
I am attempting to calculate the mining fee of a transaction, given it's unsigned transaction hex by taking difference between the sum of the inputs and outputs.
I also have access to an array of ...
0
votes
1answer
35 views
how to sign a multiple output transaction
currently i m using below code,how to add multiple address to address.
let transaction = new bitcore.Transaction()
transaction
.from(txoSet)
.to( ...
0
votes
1answer
48 views
How to spend the change in a BIP32 super account?
I am developing my own wallet in python for which I have already implemented BIP32 and BIP39. According to BIP32 documentation, change should be stored in different addresses as well as payments ...
0
votes
0answers
37 views
Blockcypher make_tx_signatures “Bad Signature” error
I am having trouble to sign a transaction on Blockcypher Test Network (using python):
import requests
from blockcypher (
import send_faucet_coins, create_unsigned_tx,
make_tx_signatures, ...
0
votes
2answers
126 views
Creating a custom transactions
I am currently learning how to create raw transactions. I can already create standard using bitcoin core (0.19.1), but when I wanted to create with custom opcode like this:
asm: OP_HASH160 ...
2
votes
1answer
131 views
Can't send raw transaction Bitcoin Core 0.19.1 - non-mandatory-script-verify-flag (Signature must be zero for failed CHECK(MULTI)SIG operation)
I wanted to send a raw testnet transaction and I was doing it like in the bitcoin documentation, but I still get this error:
non-mandatory-script-verify-flag (Signature must be zero for failed CHECK(...
0
votes
1answer
179 views
getting public key from any raw transaction - what to take care of?
i need to retrieve public key of transaction sender.
now i know there are 03 compressed pubkeys and 04 uncompressed ones.
but how is this working with segwit and multisig addresses?
can you please ...
0
votes
2answers
59 views
Can I build a raw segwit transaction with no segwit inputs?
I am trying to build a segwit transaction between a regular p2pkh address and a p2sh 2-of-2 multi-signature address. I have successfully transacted back and forth between these two addresses before (...
1
vote
0answers
87 views
Missing input returned from sendrawtransaction on P2SH multisig?
I'm playing around on regtest to build a flow for P2SH multisig. I'm getting "missing inputs" back from the sendrawtransaction RPC call, but I see inputs when I put it in a decoder. They each have a ...
0
votes
1answer
53 views
How do people using thin clients know the correct merkle path of transactions they've sent without knowing the full block?
User A send a transaction to user B. Those transactions are bundled together into a merkle tree. User A and B can both use the transaction plus the merkle root, plus the merkle path to prove the ...
2
votes
1answer
59 views
How to properly combine PSBTs for CoinJoin?
I am trying to learn the workflow for manual Coinjoins using PSBTs. I was following Andy Chow's suggestions in another thread here Where he suggests:
1. Createpsbt (he suggests using ...
0
votes
2answers
263 views
Creating a unconfirmed bitcoin transaction
I know that it's sounds ridiculous, but i need to create an unconfirmed bitcoin transaction that will be unconfirmed for 2+ hours.I came to a conclusion that i need to create a 0 fee transactions but ...
3
votes
3answers
701 views
How do you switch your bitcoinjs integrationfrom TransactionBuilder to transactions-psbt.js?
the code below works:
const btc = require('bitcoinjs-lib');
var tx = new btc.TransactionBuilder(net);
inputs.forEach(o => tx.addInput(o.txId, o.vout));
outputs.forEach(o => tx.addOutput(o....
1
vote
1answer
198 views
Transaction fails to validate (Error running script)
I've created a transaction on the TESTNET and am trying to push it via BlockCyphers facility at:
https://live.blockcypher.com/btc-testnet/pushtx/
when I make the attempt, I get the following error:
...
0
votes
1answer
77 views
How to get BTC transfer amount from raw tx using bitcoinjs
Suppose I have following object
console.log(bitcoinjs.Transaction.fromHex(rawTx));
The output
Transaction {
version: 2,
locktime: 1655960,
ins: [
{
hash: <Buffer dc 4d aa 10 db ...
4
votes
1answer
944 views
Signing a raw transaction with multiple inputs
So I am creating a simple P2PKH transaction and after I researched about this found few useful posts and answers here; I was able to successfully spend a a single P2PKH UTXO but it is really getting ...
1
vote
1answer
108 views
How to implement getrawmempool?
I’m trying to get all transaction ids in the memory pool as json array. I just finish downloading bitcoin core and do now know where to begin. Any help would be appreciated!!
0
votes
2answers
90 views
Why same output address is invalid in a transaction on Bitcoin Core?
I'm studying Bitcoin Core currently. I found incomprehensible code, that shows making a transaction is rejected if there are same output addresses in a transaction.
See Fig1, Fig2
Origin source code ...
1
vote
3answers
60 views
Is there a convention for how to order UTXOs in a transaction with multiple inputs?
I am not sure it matters to produce a correctly formatted transaction, but I am playing around with a wallet that does not keep its own private keys, but produces the raw txs to sign and want to give ...
3
votes
1answer
101 views
Can a node broadcast a valid signed raw transaction while still syncing?
Built and signed a native bech32 UTXO, but when I attempt to broadcast from my testnet node using the command sendrawtransaction it returns "missing inputs". I don't have the private keys in my wallet,...
0
votes
1answer
27 views
How many bytes long should nSequence be?
When I look at the following raw transaction from: https://blockstream.info/tx/a175425ee2f3c01acc97ef32ab1082db14eaa94e5af4c54f02f3b01dec72558e?expand
...
