Questions tagged [raw-transaction]
This tag should be used for questions related to raw transactions, bitcoin transactions that have been serialized for network transmission.
373
questions
5
votes
4
answers
749
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Why is little endian used in transaction formatting and other parts of bitcoin?
I've noticed just from studying the raw hex values of transactions that many components are formatted in hexidecimal little endian.
For example, the amount specified in an output will be formatted as ...
- 85
1
vote
1
answer
39
views
Transaction keep beeing rejected "non-mandatory-script-verify-flag"
I'm developping Bitcoin integration for Microsoft Dynamics Business Central to offer enterprise capability to apply Bitcoin receivable and payable to accounting.
To send a transaction, I'm using ...
- 45
2
votes
1
answer
51
views
What is prepended to the front of a ScriptSig and ScriptPubKey of a P2PKH transction?
In some educational materials on bitcoin P2PKH transactions, I'll see 2 digits included in the front of what would be considered the ScriptSig. For example, what is the 8b in the front of the ...
- 85
-1
votes
1
answer
31
views
"Signature must be zero for failed CHECK(MULTI)SIG operation"
I want to broadcast signed transaction but I get this error how can I solve this I get this everytime.
"Signature must be zero for failed CHECK(MULTI)SIG operation"
RAW hex
...
2
votes
1
answer
65
views
Create offline bitcoin tx for p2pkh address in a user-friendly way?
You created vanity p2pkh-addresses in the past, you have access to the private keys (WIF) and addresses (1...).
Now you want to spend the funds securely and in an offline way (you do not want to ...
- 101
2
votes
0
answers
54
views
Create and spend P2WSH that locks coins with OP_CHECKLOCKTIMEVERIFY
I'm attempting to create a P2SWH address with a script that locks the coins for some time. And then I want to spend those coins from that address.
I've read a lot, some of the most relevant:
BIP173
...
- 21
0
votes
1
answer
72
views
parse bitcoin addresses from transactions received through the P2P protocol using python
I'm trying to extract public keys and transaction amounts from tx commands using python. Everyone on this stack exchange has been extremely helpful, but I think it's time to try and leverage a library ...
- 117
3
votes
1
answer
172
views
Relation between transaction data and transaction id
What is the relationship between transaction data and transaction id (which is used at mempool to generate Merkle root)?
Note : when we query the getblock with verbosity 2, we get raw block in json ...
- 71
1
vote
1
answer
49
views
Submitblock input parameters similar to getblock?
I have installed Bitcoin Core on my laptop.
Now open bitcoin daemon and do following:
First i run getbestblockhash to get the last block hash on the Blockchain. We call this hash as BestBlockHash.
...
- 71
0
votes
0
answers
69
views
Spend from multiple P2SH addresses with Bitcoin Core
I have P2SH wallet keys from block io backup. The keys and the redeem script example:
BIP32 Public Key:
xpub661MyMwAqRbcGWq****************************************...
0
votes
1
answer
20
views
Can we have more than one address in transaction inputs and outputs addresses attribute?
In the transaction data of bitcoin can we have more than one address element in adresses attribute of inputs and outputs of a transaction.
1
vote
2
answers
94
views
Decode a signing raw transaction
I'm trying to compare raw_transaction with a sign_raw_transaction.
is there any way to do that ? ( Using rpc commande if possible)
What i want to do is :
create raw_transaction
signing it
compare the ...
- 113
3
votes
1
answer
152
views
How can I recognize an OP_RETURN transaction looking only at the hex?
Looking at these two transactions for example: tx1 and tx2. tx1 is an OP_RETURN trasaction, tx2 is a normal transaction.
raw hex from tx1 (OP_RETURN): ...
- 105
1
vote
1
answer
76
views
Parsing blk.dat file fails, is this block legitimate?
I'm parsing in blocks from my local blk*.dat files, using this excellent website as a guide.
All goes well until file blk00976.dat, block ...
- 356
1
vote
1
answer
75
views
Can I create a P2PK tx?
Is it still possible to send to a pub key directly?
How would I construct such a tx in raw hex, and would the mempool accept it?
Thanks
- 41
2
votes
1
answer
82
views
Can a signed raw transaction's locktime be changed?
If I create a signed raw transaction with a locktime in the future, and give this raw transaction to somebody else, can they edit the locktime so that they recieve the bitcoin immediately?
For example,...
- 137
0
votes
1
answer
73
views
Should an offline address generated from private key send funds to wallet?
I'm trying to use the python package python-bitcoinlib to send a timelock transaction on testnet. The github has two examples to create an address, and then use that address to send the bitcoin to ...
- 137
1
vote
1
answer
100
views
Structure of a bitcoin transaction, in particular the link to the previous transaction
I'm reading 'Blockchain and distributed ledgers' by Alexander Lipton and Adrien Treccani.
I'm trying to understand how individual transactions are linked together.
On page 338, they give the 'details ...
- 113
0
votes
1
answer
178
views
Using the Bitcoin Crate to Sign a Segwit Transaction
Using the Bitcoin crate, I'm trying to create a transaction programmatically in Rust that spends an output associated with a P2WPKH address. This is the relevant code snippet:
fn sign_transaction<...
- 1
4
votes
1
answer
243
views
What is the different between CompactSize and VarInt encoding?
Pieter Wuille's definition of CompactSize encoding seems to match Greg Walker's definition of VarInt encoding, yet the BitcoinWiki claims that CompactSize is not to be confused with VarInt.
What, if ...
- 117
0
votes
1
answer
120
views
testnet output address has no matching Script?
Here is my code to create a PSBT on the testnet:
const bitcoin = require("bitcoinjs-lib")
const privKey1 = "..."
const address1 = "mkVPHMR5euGTcvpFj6tfyVERstDdH4RtQs"
...
- 85
0
votes
1
answer
112
views
How to submit nonstandard scriptPubKey transaction to bitcoind in regtest mode?
I'm trying to replicate an algebraic puzzle I saw in the scriptPubKey of a testnet transaction:
OP_2DUP
OP_ADD
6e
OP_EQUAL
I think the intent was for this output to be spendable by a scriptSig of ...
- 147
0
votes
1
answer
82
views
sendrawtransaction on a non-synced node
This question is related to this post explaining how to use bitcoin-qt to generate a transaction.
Once obtained, I'd like to dispatch it from my system which is running a non-synced node. When issuing ...
- 97
0
votes
0
answers
151
views
Cant send raw transaction from golang with OP_EQUALVERIFY failed
I'm using btcsuite (especially this example) package to listen and send unspent inputs for specific address.
Tx hash: 690059e82dcee13678c45f2c583207d357af254624f5037b4d4d12b39caf74ca
From address: ...
- 1
2
votes
2
answers
117
views
What is the relationship between r in signature and the public key
I've been reading about ECDSA in here.
Step 11 says that
you only need the ‘x‘ value (20 bytes) for the signature, and that value will be called ‘R‘
Does that say that R is the x-coordinate of the ...
1
vote
1
answer
121
views
How long is SIGHASH?
I am reading these two posts 1 2, and following step by step.
I almost understand, but I still have some questions.
Before signing, input script should be removed and replaced by pre locking script. ...
0
votes
1
answer
103
views
Why does my hash not line up with the one in the scriptPubKey?
I got some btc in testnet, here are the outputs.
this is the UTXO that i get my btc
{
"value": 17.24756333,
"n": 1,
"scriptPubKey": {
"asm": "...
1
vote
1
answer
76
views
How to show the Op codes of scriptPubKey?
I've been learning about bitcoin and creating raw transactions. In the example I saw in a video when they use the command decoderawtransaction it outputs:
...
"scriptPubKey": {
&...
- 13
0
votes
1
answer
52
views
problem sending relative locktime (OP_CSV) transaction
i tried making a relative timelocked transaction with 1 block timelock (spendable after 1 confirmation)
funding tx:
0fda5412da2a2615361914fad007aac73154746108d44c04529e78f6c4424655
address: ...
- 257
0
votes
1
answer
616
views
How to calculate R, S, and Z from raw bitcoin transaction with witness?
How can I calculate the R, S, and Z values from a raw bitcoin transaction? I can extract them with rscan.py, but that doesn't work for new transactions.
- 11
1
vote
0
answers
146
views
Send transaction with 2 inputs and 2 outputs using Blockcypher
I'm using a node.js client of Blockcypher in order to broadcast a Bitcoin transaction.
My code:
const originWalletBalance = getBalance(originAddress)
const fee = calculateFee()
const txBody = {
...
- 137
-10
votes
1
answer
433
views
Can I be rewarded for discovering, creating, and proving bugs on Bitcoin?
There has never been a remittance history to this address.
https://www.blockchain.com/btc/address/1JqPFnGPhHhy54zJKmC1MPiczzgFjCmzE9
public key : ...
0
votes
1
answer
513
views
sign native P2WPKH with bitcoinjs-lib (signing sighash) (non-mandatory-script-verify-flag)
i experimented a lot with p2wsh multisig configurations with bitcoinjs-lib. but when i tried to sign a standard native segwit p2wpkh to p2wpkh transaction everything goes ok except for bitcoin-cli ...
- 257
-1
votes
2
answers
53
views
How value of btc to be send is written in raw transaction?
I am currently learning about bitcoin, and I came up to this:
https://medium.datadriveninvestor.com/bitcoin-raw-transaction-breakdown-c0a5a3aa8688 to know more about raw tx.
What I cannot understand ...
- 21
2
votes
1
answer
273
views
Creating a raw transaction from scratch/
I am currently learning bitcoin technology. So I came up around the term raw transaction. There are many tools to create a raw transaction but I want to do it all by myself.
My Idea is to write a raw ...
- 21
0
votes
1
answer
103
views
problem with unlocking P2WSH
i made a P2WSH address with bitcoinjs-lib from a script. the same script results in the same address with bitcoin core. I made an unlocking script and tested the combination with btcdeb and everything ...
- 257
1
vote
0
answers
137
views
Transfer all funds to another wallet with node.js
I have a segwit address (starts with bc...) and its private key, that holds some BTC value.
Using node.js I would like to transfer all my funds to another address.
This should be pretty straight ...
- 137
0
votes
3
answers
396
views
Bitcoin - How to identify if transaction is Segwit
Below is my logic to parse transaction from Bitcoin blk files
Pull Version by getting uint32
Read next 2 bytes. If they are 0,1 then it is SegWit
Else read again for varint to pull input count
If ...
- 29
0
votes
1
answer
124
views
Help decoding transaction on bitcoin testnet
I'm trying to learn more about bitcoin and I'm trying to decode a transaction I made to myself on testnet and I can't seem to figure out a couple of things
Here is the output of getrawtransaction:
...
- 1
0
votes
2
answers
115
views
non-mandatory-script-verify-flag (unknown error) with a script that runs ok in btcdeb
after learning a lot about script (and playing with them on the testnet) i made a way longer script.
$ btc decodescript 7455886f94935688789352885279935b88946e935b88945187
{
"asm": "...
- 257
1
vote
2
answers
122
views
unlock non standard script
i transferred some coins to a testnet address 2MwP5KwNRsQV5cf3T7VcFU4Vhj2LcUeMiLM with a locking script just to play with scripts. the locking script is OP_1 OP_2 OP_ADD (always evaluates to true).
...
- 257
3
votes
1
answer
221
views
Validate raw transaction hex without broadcasting
I would like to check the validity of a raw transaction (i.e. whether it would be accepted by network nodes), without broadcasting the transaction to the network. I am interested in knowing what is ...
- 308
0
votes
0
answers
81
views
What is the best site/tool/way for finding the RSZ values of a bitcoin transaction? [duplicate]
The two most popular sites for doing this are down which are https://2coin.org/ and https://2xoin.com/getRSZfromRawTX/ with no indication they'll ever return to be usable.
Can anyone here link any ...
- 1
3
votes
1
answer
651
views
DLC funding transaction error: non-mandatory-script-verify-flag (Witness program hash mismatch) (code 64)
I'm attempting to construct a funding transaction for a DLC. So far I have created the following transaction which encodes entry of a bet for local/remote collateral of 1000/1000 sats and binary win/...
- 308
0
votes
1
answer
138
views
Why is signature S value is unnecessarily high not safe?
I get frequent warning when sending RawTX to PushTX message
(Non-canonical signature: S value is unnecessarily high)
Why is signature S with a large value dangerous (that is, when the first HEX ...
1
vote
0
answers
256
views
How do you sign an unsigned transaction using Electrum in a multisig setup?
I am experimenting with multisig in testNet between Electrum and Caravan by Unchained Capital. I created a 2-of-2 multisig in Electrum with BIP 39 seeds.
I then created a watch-only wallet in Caravan ...
- 11
0
votes
2
answers
525
views
Error 400 when pushing tx hex to mempool.space's API
I am using the code syntax provided by mempool.space for a POST transaction request from their website here:
https://mempool.space/api
const mempoolJS = require("@mempool/mempool.js")
const ...
- 85
1
vote
1
answer
156
views
Get raw transaction from tx id without txindex=1
I'm trying to get the raw transaction hex string of a transaction that I know the id from.
I would like to do that without using txindex=1.
As I assume the transaction is unspent (and confirmed) I'm ...
- 11
0
votes
1
answer
642
views
How can I get RawTX transactions?
I used to be able to get RawTX transactions on the Blockchain using the link:
https://blockchain.info/tx/60183ab915f2f4b0190605f98bd0e9f8eafe13a1c902b3ae87ecd0dfc8a599a0?format=hex
But the site ...
1
vote
1
answer
679
views
What is "Witness"?
What really is "Witness"? I saw this data in blockchain and can not identify what it really is.
Here is the dump of transaction for example.
TX hash = ...
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