Questions tagged [transaction-id]
The unique identifier of a transaction. Corresponds to the double SHA256 hash of the serialized transaction.
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How to compute a TXID of any bitcoin transaction in Python
there, I've already looked at other similar posts on here but with little luck. All im trying to do is calculate the TXID of a transaction after downloading the transaction in hexadecimal from a ...
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When calculating the hash of transaction, why is the version used as "01000000" instead of "00000001"?
According to the protocol documentation for tx, the first field on the transaction data is a version number of size 4.
Based on this, I am trying to format the array of bytes needed to calculate the ...
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Why is wtxid called "hash" in Bitcoin Core's getrawtransaction RPC?
In the industry txid is known as "transaction hash". Why wasn't the "hash" field called "wtxid"?
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example of transaction ID in a ledger account
What is an example of a hash transaction ID for ledger account in 2023 for bitcoin payments
Erica
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Calculate a transaction version 2 ID [duplicate]
Been writing a bitcoin library from scratch, which eventually involves calculating transaction IDs.
Version 1 transactions work fine when their hex data is being SHA256'd twice and then reversed.
...
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How to calculate a bitcoin transaction hash of a coinbase transaction in 2022?
According to all internet sources i have found, the hash/ID of a transaction is the result of the double_sha256 algorithm that takes all raw data of the transaction. I tried to calculate it in Python ...
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How are TXIDs determined from the raw hex data of a block? Also, what is the coinbase transaction?
Consider the hex data of block 170.
The coinbase TXID is this: b1fea52486ce0c62bb442b530a3f0132b826c74e473d1f2c220bfa78111c5082 and the second TXID is: ...
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How does a node get information from the TxID?
If I'm right, segwit TxIDs are composed of the SHA^2(256) hash of the non-segwit data of a transaction. But, how does another node use the TxID to obtain information about the transaction such as the ...
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How is it possible that Bitcoin blocks store transaction data in 32-bit SHA256 strings?
What I mean is that a traditional Bitcoin block has performed 2 SHA256 iterations on the raw hex data of a single transaction. Then it is stored in the block. But since it has been SHA256'd, how can ...
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Is txid a required field on all transactions?
I am writing a script that relies on txid to perform some tasks. I was wondering if it is possible for the txid to be missing from a transaction.
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Bitcoin transaction not confirmed since 3 days ago [duplicate]
Hello I might sound stupid but it’s been three days since I issued bitcoin transactions, all unconfirmed so far. I use Blockchain.com to manage my wallet and have done everything normally (I think, as ...
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Developing a Bitcoin POS (Payment Page) - How do I identify the transaction
This is probably a basic question but I can not find an answer.
We are developing a BTC payment process for a Point-of-Sale. We have managed to build this fine and can make requests (QR code) for a ...
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How can I transfer unconfirmed transactions from wallet.dat to a new blockchain wallet
My question may not be very clear since I’m not really an expert in bitcoin and its technology. But in my possession I have just a wallet.dat files with an unconfirmed transaction on it.
I followed a ...
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Is it only out of sheer luck that all my "txid"s are unique? How should I handle multi-vout transactions?
I have created a database table simply copying the information from listsinceblock from Bitcoin Core's API. I have a UNIQUE constraint set to "txid + vout", as I'm supposed to. But when, as ...
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Minimum characters to uniquely identify bitcoin trasanction in blockchain
What is the minimum number of characters (TXID from the beginning) which is generally considered to uniquely identify a bitcoin transaction in the blockchain?
(Similarly to git and a commit SHA - ...
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Refer to UTXO by output index or output full address in blockchain?
I'm writing my own simple crypto and wondering whether input in a transaction should refer to unspend output only by it's TXID and vout (index in outputs vector in a transaction) OR by it's TXID and ...
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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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Unconfirmed BTC transaction / TXID doesn't exist?
I recently tried sending some btc to coinbase. In a hurry I did not put a transaction fee. I've tried to explain to their customer support what is going on. I offered to charge me a fee through my ...
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How to find out if LND opening pending channels has a confirmation onchain?
After typing lncli pendingchannels I get a channel_point number, and when I put channel_point txid to check if it was confirmed onchain
by typing:
bitcoin-cli gettransaction "txid insert"
I get an ...
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How to calculate txid for segwit transactions?
I'm having difficulty calculating txid for recent transactions. I followed bip-141 at https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki
For the first transaction in the first block found ...
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Generating TXID from transaction's data [duplicate]
As I understand, we can generate a TXID by hashing transaction data through SHA256 twice, and as you know probably, A bitcoin transaction is just a bunch of data that describes the movement of ...
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getting address from public of ScriptPubKey vs ScriptSig
Recently I read some articles about BITCOIN protocol and it's transaction.
I understand(maybe it is incorrect) these rules:
An input is what we call an output when you're spending it in a
transaction....
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bitcoind rest api tx endpoint
i am having a trouble with bitcoind REST API endpoint for retrieving transaction info. According to the documentation it should return confirmations among the retrieved data. But my bitcoind do not ...
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how can i get rid of a zombie channel in LND?
My LN-Node: 023bf99414b3e93ab7463ce60f44cd691f8be3c1ae33a2015fe784c85c36e770cf
bitcoind 0.17.1 // LND 0.5.2-beta commit=v0.5.2-beta-rc7
Channel: 598078250466476032
Problem: lncli feereport returns:
...
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Ripple: How to calculate transaction ID (TXID) [closed]
Given a signed Ripple transaction, how do I calculate the txid?
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SPV clients querying the full node
Is there a way currently where an SPV client can send a TxID to a full node which is present in the UTXO set of the full node and have the full node not scan its entire blockchain to fetch the ...
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Custom transaction IDs
I understand that TxIDs are simply the double hash of tx data. But who creates them? I assume that all the nodes create the TXIDs of the transactions on their own and the TxIDs are not transferred ...
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Why didn't Bitcoin implement segwit in the first place?
Why didn't Bitcoin implement segwit in the first place?
Why and how does non-segwit Bitcoin enable a miner to change a transaction's txid?
From Mastering Bitcoin ch. 7 § "Transaction identifiers":
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Getting transaction id from raw transaction of a multisig address
I am able to get the tx id (or transaction hash) of almost any transaction but the one where the script starts with an "OP_O" (which is, I think, the null dummy introduced here https://github.com/...
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What does postfic in the wallet transaction id mean [closed]
It's known the txid is always a 32 byte hex sequence for example ceca9c54d1a2f9122326a871a3b0b20b725540137e80cb50da663a404f7849a8, but when inpecting the transaction in a wallet it shows it with a ...
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Confirm transaction in regtest mode
I'm testing some wallet features on regtest. Here's the sequence so far:
cash-cli -regtest generate 101
cash-cli -regtest getbalance
500.00000000
cash-cli -regtest getnewaddress newAddress1
...
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Question about identical txids/merkle tree in Developer guide
I am new to the technical details about Bitcoin and has been reading Developer guide on bitcoin.org. I have a question about below contents mentioning merkle tree, identical txids.
I googled and ...
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Confused About Hash In Satoshi Nakamoto Diagram
In Satoshi Nakamoto's diagram:
Consider the Hash block in the first transaction block above:
How is that Hash value calculated? I see arrows from an Owner's Public Key and another arrow, so it's ...
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Get input address using VIN txid?
I have written following script to get Vin address from Vin txids.
#!/usr/bin/python
# -*- coding: utf-8 -*-
import requests,json
url="http://asd:asdf@localhost:2332"
payload={}
payload = {"jsonrpc":...
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Getting the wrong txid for coinbase transactions
I'm trying to hash transactions to get the txid. I get the hex values from blockchain.info. I get the correct hash for all transactions except for the coinbase when I hash it twice. Is there something ...
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I think I found 241 Bitcoin [closed]
I have been having dreams for the past month about BTC and an old computer I had bought Bitcoin on a long, long time ago. I just found said computer in my grandmother's basement. Booted it up and lo ...
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Find message attached to Bitcoin transaction?
Given a txid, can I find out the message/comment the transaction was attached with by the sender?
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How to compute SegWit txid?
BIP141 says wtxid is SHA256 of [nVersion][marker][flag][txins][txouts][witness][nLockTime]. Is data that hashed as txid includes witness?
And will txid be presented in block, e.g. be counted when ...
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How does TXID gets created and at which point
I see TxID in bitcoin transaction input as reference of the UTXO. How does TXID gets created and at which point, wallet or node?
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Why does bitcoin-cli not show the correct TXID for this transaction?
I've been decoding some transactions on Testnet, and I've found one that bitcoin-cli decoderawtransaction seems to "fail" to decode correctly.
Here's the TXID: ...
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After creation, what I have to do with a coinbase transaction?
I have create a coinbase transaction successfully with the command:
createrawtransaction '[{"txid":"0000000000000000000000000000000000000000000000000000000000000000","vout":0}]' '{"...
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Values for txid and vout for create a coinbase transaction
I want create a coinbase transaction to go with a new block minned by my program. I am creating it with the json-rpc command createrawtransaction. What's the values for txid and vout in this case?
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SegWit and previous hash: txid or wtxid, or either?
With segwit there will be two transaction ids wtxid and txid
Can either one of them be used as previous hash or only txid?
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Is the Bitcoin Transaction ID also the "Hash of things to sign" for the signature generation?
As a random example, is the transaction id:
114be7fea4d3dd0cf2e88a8fa9a56d4ea741efbabd07d61d08cf0810be2254fd
Also the hash that was used as the "hash of things to sign" for the "signature generation"...
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tx-malleability who re-signed the tx?
It would be really great if there was a way to loop through all the txids in a new block and be able to check if you (can) sign your original transaction the same way it was re-signed - that it ...
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Possibility of validation of transaction TX id
I've readed numbers of thread here but non answer to my question. What I want to know if there is a way somehow to validate transactionID ( txID ).
I have a site which accepts bitcoins. In order to ...
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Create raw transaction what txid
I want to check for every transaction if there is enough balance to pay it(including fee). I found this question:
Is there a way to know the Bitcoin Network transaction fee BEFORE actually submitting ...
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Duplicate transactions in blockchain
Can someone explain what does this mean:
As i see: 2 transactions are having SAME txid and differ just by address. Is this normal behavior? Should I get both transactions in such cases?
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What would be the fastest way to query for a certain txid to get its inputs?
I am working in an artistic/visualization project that analyses Bitcoin transactions. I have a Bitcore instance with insight API and from a Python script I query through the REST API so the queries ...
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How are transaction IDs generated and how are they then changed by transaction malleability?
How are the transaction IDs generated for a Bitcoin transaction? How can the transaction ID change due to a transaction malleability attack?
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