Questions tagged [raw-transaction]

This tag should be used for questions related to raw transactions, bitcoin transactions that have been serialized for network transmission.

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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 ...
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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 ...
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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?
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1answer
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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 ...
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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 ...
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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 ...
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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 -...
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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-...
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1answer
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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 ...
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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 ...
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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 ...
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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 (...
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1answer
39 views

signing multiple input raw transaction - algorithm and sighash types [duplicate]

I have an unsigned raw transaction: ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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&...
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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/...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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?
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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 ...
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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 ...
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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( ...
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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 ...
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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, ...
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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 ...
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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(...
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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 ...
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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 (...
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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 ...
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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 ...
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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 ...
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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 ...
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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....
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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: ...
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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 ...
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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 ...
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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!!
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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 ...
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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 ...
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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,...
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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 ...

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