Questions tagged [transactions]

This tag should be used for questions related to transactions. Transactions are signed messages regarding the transfer or generation of bitcoins. They are broadcast throughout the Bitcoin network and, if accepted, integrated in the blockchain.

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26 views

How to determine which private key signed a transaction

I was just looking through some of the blocks and I saw a transaction which had 408.1011 BTC split into 3 output address. 18.5468, 230.6512 and 158.9030731. I then saw the 230.6512 use the transaction ...
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Storage of the transaction chain [duplicate]

I was looking into the bitcoin developer documentation and going through the RPCs. I was wondering if the blockchain consisted of the list of transactions, then how is the transaction information ...
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After a transaction of BTC, is it possible to change the amount of BTC?

Kindly Explain. If I have been transferred 10 BTC, but the transaction has not been confirmed. is it possible to change the amount of BTC 10 to 15?
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How to generate utxo information for a bitcoin transaction?

I'm using bitcore atm and am trying to set up transactions. but I can't find much information on the txId & the script. I know it says the txId is generated from the transaction, but how can you ...
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34 views

How is a double spend via 51% attack possible?

If a transaction is already mined in lets say block A and has 2 confirmations, how can this transaction be spent again? My understanding is that for a transaction to be propagated to the network it ...
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Missing account [duplicate]

I bought bitcoins years ago but I cannot find email that was sent containing transaction id, account details etc. How can I search for the transaction? What happens to inactive coins and are they ...
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2answers
35 views

Are transactions from two separate bitcoin accounts on Ledger Nano S independent of each other?

John Doe creates two separate bitcoin accounts on a ledger nano s and funds the accounts from two separate sources. The first funding source is a known terrorist organization and the second funding ...
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When is a Bitcoin transaction considered as "first version" by a node?

Given what Satoshi once said: The network nodes only accept the first version of a transaction they receive to incorporate into the block they're trying to generate. My question to that: What makes ...
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1answer
46 views

Missing Witness field in p2wpkh decoded tx hex

I have placed together a raw tx hex but when it's unable to be broadcasted as I keep getting an error below sendrawtransaction RPC error: {"code":-25,"message":"bad-txns-...
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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 ...
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What is the Purpose of Writing the Previous ScriptPubKey as a Temporary ScriptSig of an Input Before Signing?

I have seen some guides saying to write the script pub key of the output we are trying to redeem. (Ie. step 6. How to redeem a basic Tx?) I'm curious what the reasoning behind this is and what will ...
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1answer
55 views

Can you program a transaction to automatically run once fees are low?

Can i program a bitcoin transaction to run when the network is not as busy or when fees are low? If you are not in a rush to complete trx.
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Decoding Bitcoin transaction data

I've recently learned that some cryptocurrencies allow the users to attach additional input data to their transaction and would like to know if it's true for Bitcoin as well. For example, Ethereum ...
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Bitcoin transactions associated with layer 2 projects

Is there any website which tracks the number of Bitcoin transactions, fees and amounts associated with layer 2 projects (Lightning Network, Liquid, Rootstock)? I am curious about this because if a ...
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1answer
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Trace fund flows between Bitcon addresses using transaction data

I wonder if there is a way to trace fund flows in the Bitcoin network using transaction data. I'm using Google BigQuery public data and their Bitcoin transaction dataset has following columns: ...
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1answer
35 views

How to set up a listener on an address, and trigger events upon receiving transaction?

I have a task where I need to set up some sort of a listener on a particular bitcoin addresses for incoming transactions, and once a transaction arrives, I need to call some function in my web service....
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Why are some on-chain transactions marked RED on RTL (Ride the Lightning)

I have an LND node and I use RTL to interface with it. I noticed that for some of the on-chain transactions, the Amount(Sats) value is marked in RED, why so? What happened with those transactions? ...
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Which elements of a P2PKH transaction are signed by default, and how is the signature used?

I'm working through the developer guide on bitcoin.org and there is a part of the section on transactions which isn't very clear. This diagram shows the elements of a transaction which are signed ...
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1answer
60 views

How does a Wallet Create a Transaction when a Public Address Is Provided?

Given a public Bitcoin wallet address 1BdYVvwoxTWMGqJS2Pg6NkVD7RnENVjSac; is pasted into a wallet to send Bitcoins to. How does the wallet create an output to send coins to the public key associated ...
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2answers
86 views

Trace Bitcoin Fund Flows When There Are Multiple Input and Output Addresses

I'm trying to analyze transaction data and wondering if there's a way to tell how much was transferred from one wallet address to another when there are multiple inputs and outputs for one transaction....
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How to save history of my previous bitcoin wallet?

I have 2 bitcoin wallets. Let's call them "old" and "new". I been using my old wallet for many years, it contains long history of buying and selling BTC. Now I decided to use my ...
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Why one of my wallet ID is associated with my other wallet ID in blockchain [closed]

My blockchain recovery phrase is compatible or associated with other of my wallet ID
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1answer
27 views

How do people know who sent them bitcoin, ex. in case of a ransomware targetting multiple locations?

I have a rough understanding about how bitcoin works and have read about how anonymous it is, or rather how not anonymous it can be in certain situations. But I still do not get how is it possible to ...
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1answer
19 views

Transaction can not be found

Sender shows bitcoin being sent be it can not be found when I look for it in blockchain explorer nor can the send produce a transaction number
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1answer
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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 ...
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1answer
108 views

Bitcoin Core v.0.14. doesn't recognise recipient address starting bc1

I have some problem with sending Bitcoin from Bitcoin Core v.0.14. When entering the address in recipient field it becomes red. And I noticed that the address to which the translation needs to be made ...
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3answers
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Do I have a chance to commit a transaction without any network fee?

I know how transaction fees are calculated. Also I understand that a transaction with a higher fee will be approved much faster than a transaction with the lowest one. Does the bitcoin protocol allow ...
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1answer
24 views

Retrieve my bitcoin balance

I have a bitcoin balance,what's the process I need to follow to spend my balance in my bitcoin address.
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3answers
79 views

Does Proof Of Stake have any intrinsic scalability Advantage over Proof Of Work?

Is there any intrinsic scalability advantage to using proof of stake over proof of work? Ignoring the environmental impact issue, and ignoring sidechains, can proof of stake achieve higher TPS rates ...
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28 views

How to Back-up and Withdraw Bitcoins to My Mastercard

Please help me. I am new to bitcoin wallet and I would like to know how to back up my wallet and how to withdraw bitcoins to my mastercard or debit card.
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Could I get in trouble for deposits in my account that I didn't make? [closed]

Why or how would cryptocurrency in LARGE amounts, worth a LOT, be showing in my trust wallet and metamask wallet? Not dust. What would be the purpose of someone doing this and how would they do it? ...
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1answer
88 views

What size does a transaction have?

Transaction size should be the same right? I get that there were updates to the btc network that changes the size of transactions. But if you just look at transactions since the last updates, how big ...
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My bitcoin was approved but not spent [duplicate]

So i found out that my transaction was deemed suspicions for money laundering I guess. lol... of course it wasn't. I opened an account with bitcoin exchange and when i went to blockchain.com to send ...
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submit unconfirmed transaction use submitblock and collect fees [duplicate]

for make unconfirmed transaction at blockchain more faster confirmed, i myself using bitcoin core full node, how about if use submitblock command for make transaction quickly confirmed? also from ...
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Where did my money go? [closed]

I won 100 dollars on one of my games I play. I withdrew that money using my bitpay address, thinking that it would go onto my bitpay card. I checked today and the game says that the money was process ...
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1answer
39 views

How can I get transction destination address from raw transaction data?

I am writing a program that reads Bitcoin transactions from .blk files and performs some analysis on them. I would like to get transaction destination address (like in some transaction explorers: link....
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1answer
214 views

How can I generate expiring transactions?

I want to generate a transaction that spends funds to a wallet controlled by a third party, but for this transaction to only remain valid for a certain window of time. This could mean a transaction ...
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2answers
501 views

Incoming transaction has been marked as pending since 2013. How can I retrieve it?

I requested BTC from someone back in 2013. Its been in pending status ever since. It has nearly 500,000 confirmations. The value of transaction when initiated was only $200 or so. Now the value is ...
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31 views

Transaction signing and security: Different signing approaches

I am currently studying for an exam and reviewing a past one from the CS 251: Bitcoin and Crypto Currencies course in Stanford with the following question on transaction signing. I have written my ...
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1answer
64 views

I sent my Bitcoin from Coinbase Wallet back to my coinbase wallet address. I basically sent it to myself but can't get access to it

I tried sending my Bitcoin from my coinbase wallet address to my cash app Bitcoin account but accidentally copied and pasted the Coinbase Wallet address instead of the cash app Bitcoin account. So ...
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1answer
129 views

What is SIGHASH_ANYPREVOUTANYSCRIPT?

BIP 118 describes SIGHASH_ANYPREVOUT, but also mentions SIGHASH_ANYPREVOUTANYSCRIPT. What is the difference, and why is the later sighash flag needed?
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1answer
42 views

Sending "generalized" secret messages over LN using "Lightning messages"

In the Mastering Lightning Network book section 3, it describes the Lightning Network as being "... so much more than the cryptographic protocols on top of the Bitcoin scripting language. It is a ...
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62 views

Help analyzing this color coded hexdump of the Bitcoin blockchain

Sample of genesis, growth, and current height Sample of the latter part and the end of blk02655.dat. This probably covers parts of the last 10000 blocks. Process here: https://twitter.com/...
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1answer
53 views

Send bitcoins directly from exchange to vendor

I want to buy something at a vendor that accepts btc only. Can I buy btc from a website like switchere (I'd use SEPA transfer for payment) and send it to the Vendor's wallet directly instead of my own?...
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2answers
81 views

Why should a miner include transactions when creating a new block?

As I understand it, if I'm a miner, and I have 5 transactions in my queue, I then would use the previous blocks hash and my list of transactions to attempt to create a new block. To do this, I must ...
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1k views

What is this unusual transaction in the Bitcoin blockchain?

I found a transaction in the Bitcoin blockchain. The first output is unspent and has an abnormal Pkscript. What is this output and why does this output address have no transaction and balance on it? ...
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1answer
39 views

What are the ways to obtain public key of a wallet with no outputs

I was wondering if there is a way to obtain public key of a public address where the address does not have any output transaction
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1answer
71 views

Is bitcoin awarded per transaction or per block?

I'm still learning how Bitcoin works and one thing that remains unclear to me is when Bitcoin is awarded to a miner. From my understanding, a certain amount of Bitcoin is awarded to a miner when a new ...
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1answer
59 views

Which projects and services are responsible for most of the Bitcoin transactions?

Which projects and services are responsible for most of the Bitcoin transactions? Project Transactions % ABC 50 XYZ 20 I am interested to know which projects really contribute in paying more fees ...
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How safe it is to store keys in Electrum? I think Luke Dash JR didn't recommend it

I agree with Luke Dash Jr and in general this wiki with the fact that doing anything without a full node is a mistake: https://en.bitcoin.it/wiki/Clearing_Up_Misconceptions_About_Full_Nodes But my ...

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