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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How can cash out your bitcoin wallet [duplicate]

can you cash out your bitcoin wallet and how do you receive the money from your wallet
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Is any 256-bit combination a Bitcoin private key?

I've recently been implementing a simple Bitcoin wallet and some libraries seem to disagree with address derivation from the same WIF private key, and thus wouldn't sign transactions. After that, I ...
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Is there software that can scan for reused R-values?

Is there any up-to-date program that can check for reused R-value for a specific Bitcoin address? (I don't want to scan the whole blockchain, just for a particular address.)
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Why bitcoin signature generated by javacard Applet orspecially Satochip Applet is not verified?

Suppose that I want to develop a sample test application using Satochip Applet for creation and sending bitcoin transactions programmatically.I pass a transaction hash to Applet and get a transaction ...
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2 votes
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What prevents miners from removing transactions when validating a node? [duplicate]

Simple question: when a miners receives a block of transactions, he can't add fraudulent transactions because they need to be appropriately signed, but what prevents him from erasing a tx? If he ...
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How provide a sender address to a Know Your Transaction service

Due to the recent change in regulatory bodies, crypto businesses are now being asked to prevent their customers from facilitating transactions used for money laundering and other illicit activities ...
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Meaning of parts of a transaction created by an online wallet

I would like to know this complete transaction details. The highlighted wallet is ID with 0.000496 BTC's is my wallet Wallet with 2.7+BTC is I dont know what it is and why it is linked to my wallet ...
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2 votes
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Qualitative anatonomy of a transaction that uses ANYPREVOUT

I am entered the world of bitcoin recently and currently I am studying the broad area of covenants (that are gaining more attention from the community, see 1). In this context, certainly the BIP-0118 ...
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How to analyze BTC flow in many to many transaction

I am confused as to how should I analyze many to many transaction. I.e. many TX IN and many TX OUT Is there a way to know in above setup which input address sent which amount to output address? I've ...
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howto send bitcoin using python? I have my publickey and privatekey

I have a public key and a private key, how do I send funds to another wallet? I'm using PYTHON, I can't find information or examples on how to do it
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Python unable to install Bitcoinlib

I try install bitcoinlib python package and I get an error: Collecting bitcoinlib Using cached bitcoinlib-0.6.5-py3-none-any.whl (315 kB) Requirement already satisfied: numpy>=1.21.0 in ./venv/...
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Sent BTC from Coinbase, blockchain explorer says Confirmed. Recipient didn't receive it. How can I confirm?

On Thursday evening July 21 @ 23:42 PM CT I transferred around $501.22 from Coinbase to an external wallet. Per Coinbase, they sent it out to the BlockChain, it was confirmed by the BlockChain. I ...
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My USDT transaction unconfirmed in blockchain network from past 60days [closed]

My USDT transaction withdrawal successfully completed at withdrawal platform but unconfirmed in blockchain network from past 60days anybody can mine that transaction please help me
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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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3 answers
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How 2 chains co-exist together?

I am not able to understand, how 2 chains co-exist together, like these were the observations which are ambiguity for me: In one reading I have read, Only longest chain is valid and and rest chains ...
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suppose if I derived a public key from another algorithm instead of elliptical curve will the node reject my tx?

Or I changed the value of G in EC (K=k*G) what will happen
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2 votes
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Does an uneconomical output need to be kept in the UTXO set?

Even though it is consensus valid to spend a UTXO of an amount that is lower than the extra fees it would cost to include it in a transaction, most nodes wouldn't relay them because of the ...
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Are transactions included in a block or is only the Merkle-root hash included in a block

Before broadcasting block into bitcoin blockchain, Does a Block transactions are included in a block or only the hash of them are included in a block. While I am surfing through net, I came across two ...
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How to obtain transaction-ID for a payment?

I'm trying to create a transaction and send it to the blockchain. The goal is to get an address from which the money comes and an address to which the money will go, send the transaction to the ...
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1 answer
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How to accurately calculate the vsize of a transaction?

there's a transaction txid is fa3467452918627ebd63a3e8570e70d38b0eefef683347510b204ba6962ebe44, using bitcoin-cli we can see it's size,vsize and weight we can get it's hex and it's accurately 225. ...
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Translating inputs (and outputs) to find addresses involved in transaction?

Is there a way for me to translate the input and output scripts in a bitcoin transaction? I am building an application that lets you query different stats from the Bitcoin-network, down the line I ...
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I'm trying to send Bitcoin but it's telling me I need a pin to send it why?

I want to send Bitcoin to my wife because she's out of town and needs some money that's the only way I can give it to her but it's asking me for a pin what is my PIN I have no idea what it is or why ...
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btc transaction by Digital signature

I have old btc wallet and I have Digital signature but i don't have Private key , Is there any way for withdraw btc from wallet just by Digital signature ?
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Inputs Transaction Signining

When we sign a transaction at least with 2 inputs and SIGHASH_ALL flag, what happend to the signature message ? For example: version: 01000000 inputs: 02 txid: ...
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5 votes
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What are packages in bitcoin core and what is their use case?

In bitcoin source code there is an entity named Package and I've seen them many places over the source code. I found this comment in src/policy/packages.h: /** A package is an ordered list of ...
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Additional instructions in TX

Would it be possibile to add additional information in TX? I would like to add time of transaction in it. Would hash of TX change if hostile node would change that time ?
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In what data structure bitcoin transactions are stored in blockchain

In what data structure bitcoin transactions are stored in blockchain? That Vout and Vin thing in blockexplorer it is in json format.So in code what data structure is used since in the bitcoin node ...
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How do segwit nodes behave when they receive a transaction between two legacy nodes?

Segwit nodes know about the move of the witnesses to another part of the transaction block. What would happen when they receive a transaction between two legacy nodes, knowing that they will build it ...
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Where Is Signature Data Stored In Post-SegWit Transactions?

If i'm correct, i am pretty sure that signature data such as the scriptsigsize and scriptsig is stored outside the Tx_Data of a Bitcoin transaction. But then where is it stored? Is it in the block or ...
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Why this witness doesn't seems to contain a public key?

I am learning how transactions are coded in the blockchain, so I used a python script to compute bitcoin address from public key. This works with the public key: ...
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Pruning mode in Bitcoin Blockchain [duplicate]

How can a node chose to use pruning mode where it can discard uneeded transactions history after validation is complete?
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How does the bitcoin network use public and private keys when one wants to transfer funds?

I am familiar with Public keys, private keys and addresses. But, I don't understand how they are used when I want to transfer funds to a different wallet. For example, what is the process that is ...
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3 votes
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Is it credible that a "stuck transaction" was the true cause of binance pausing bitcoin withdrawals?

It is reported that Binance is blaming a "stuck transaction causing a backlog" as the reason it prevented people withdrawing their bitcoin for some hours on the 13th June 2022. I do not ...
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Who will use the blockchain if bitcoin has millions of users? [duplicate]

I am probably misunderstanding some things with either bitcoin or lightning. However, I'm confused how the bitcoin network will practically function at scale. Let's say there are 400k transactions per ...
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4 votes
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Why do bitcoin exchanges use "central" wallets?

Most exchanges that have the option to deposit crypto offer individual wallets for every customer. What is the benefit of moving that money to a "central" wallet? Could they also just ...
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Is there a way to know how many of currently unconfirmed transactions in the MemPool is currently being attempted by other miners?

Assume there there 100 unconfirmed transactions currently in the MemPool. And the size of a block is such that it's roughly made up of 10 transactions. Now when a miner completes the Proof of Work &...
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2 votes
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Can the difference be determined between two nonces k1, k2, having a linear relationship if the nonce and private key are unknown, i.e., k2 - k1 = n?

My question is related to weak signature vulnerability testing where a hypothetical attacker does not know the values of the nonce or private key itself, but can determine that the nonce 'k1' is ...
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Monitor multiple bitcoin addresses

I would like to know if I could monitor new transactions on several addresses that I do not have access to personally and see if the transactions were validated by the network with an API, and if ...
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How can a transaction be spent unless it is written in the blockchain?

I'v seen an unconfirmed transaction in the blockchain.com and one of its outputs is currently spent. How it this possible for coin to be spent before the transaction is written on the blockchain?
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How can I recover from a "Bitcoin not sent" error on Bitcoin wallet

I use the Bitcoin wallet by the Bitcoin Wallet Developers. Wallet 9.03, Android 9, Huawei P10 Plus. After trying to send bitcoin to my Coinbase account, the message "Bitcoin not sent" ...
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How to find xPub from wallet address

I'm trying to find a master public key (I believe this is the xPub) of an electrum wallet I no longer have access to. This is ok, I've moved all BTC from there. The thing is, I need the public key to ...
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Why does the network allow a fraudster (double spender) to broadcast a transaction to a single node (the victim)?

Let's assume for the sake of argument that a fraudster is able to create blocks faster than the rest of the network. Given that, they would be able to achieve double spending by making a fraudulent ...
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Searching The Blockchain Based on Transaction Amount and/or Date

I know there are a lot of services to look up if I have the wallet address or transaction ID. But, let's say I have no idea who the sender or receiver were nor a transaction ID but I know ...
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Repeating identical outputs in bitcoin transaction

I am building a script that is indexing all bitcoin transactions in real time with all their details etc. But I am looking here at this transaction - https://www.blockchain.com/btc/tx/...
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Blockchain app won't let me send bitcoin because it says there's nothing in the wallet, yet I have $40 in there [closed]

Like the title says, it won't let me send any bitcoin through the "Send" function of the blockchain app, and only prompts me with the "Buy Crypto" button, but I have $40 in the ...
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Can you give me an example of a P2MS tx at testnet?

I am checking on the test net before applying current update. I'd like to check P2MS, which is "bare multisig," and I'd like to know the testnet transactionID of this. Or is there an ...
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Do wallet companies send user's transactions to their own "central" bitcoin nodes?

Do external wallets companies such as muun, bluewallet, or greenwallet send user's TXs to some "centralized" data center where they own some nodes to broadcast the TX to the blockchain? If ...
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Isn't the power of blockchain coming from decentralization instead of immutability of blocks?

I've only started exploring the working of blockchain. So what I've gained from guides on Google has me into thinking that what makes blockchain records resilient to corruption is distributed storage, ...
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How to verify Bitcoin transaction against a specific user? [duplicate]

I am working on project .i have a functionality where user can submit bitcoin to my wallet .and after submitting bitcoin a payment page will open and user will fill payment details e.g his/her bitcoin ...
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3 votes
2 answers
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There are a lot of 100 input transactions in some blocks, what's the reason?

In block 736302, we can see a lot of 100 input transactions. And this can be seen also in 736567, 736299 and so on. Is this only a coincidence?
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