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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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Keep getting error in payment protocol when trying to purchase amazon card.

Wants me to select currency on invoice page. I cannot find invoice page.
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At which stage, transaction is validated?

Let's say Alice owning 12 BTC in her wallet and she is trying to send 5 BTC to bob. First the transaction is broadcasted to all nodes, at the time the transaction is in the transaction pool. Then ...
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Why are the inputs of Bitcoin transactions signed?

This is my understanding of what a transaction looks like: inputs: input0: txid: <funding tx0 TXID> outputID: <output ID of UTXO in the funding tx0> scriptSig: <...
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1answer
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Why this transaction is invalid?

I issued this transaction on testnet (for a homework later solved with another script). python-bitcoinlib validates the transaction but when i submit it to blockcypher it gets rejected with error: {"...
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1answer
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how does a miner choose which transactions go into the next block?

how does a miner choose which transactions go into the next block? do all transactions go through or is there a lottery process? I understand transactions with higher fees are given priority.
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1answer
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Can transaction be stuck in the 'processing' stage and has not been mined by the Blockchain network? [duplicate]

Can transaction be stuck in the 'processing' stage and has not been mined by the Blockchain network and due to this, it cannot reflect in wallet ? My friend send me a bit coin but it did not reach me,...
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sendfrom api taking txin for entire wallet.Not only for sender address txin [duplicate]

I've multiple accounts(label) in single wallet(wallet.dat). (Multi wallet is not added in final/master branch of Litecoin Ref link) Now when I use sendfrom api to transfer from one account to another ...
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2answers
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Can two or more transactions sent from the same address be mined in the same block in Bitcoin's blockchain?

Imagine a person Bob has 10 bitcoins in his wallet. He wants to send 5 bitcoins to Alice and another 5 bitcoins to Uncle Tom simultaneously (in separate transactions). Will both Bob's transactions be ...
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33 views

Non-standard transaction scripts broadcasting

I'm developing an application on Bitcoin blockchain, and I use output transaction scripts that are not standard according to the classic payment methods. However, even so, on Tesnet everything works ...
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1answer
23 views

Arbitrary access to already confirmed transactions

This link mentions that "[getdata] can be used to retrieve transactions, but only if they are in the memory pool or relay set - arbitrary access to transactions in the chain is not allowed..." But ...
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Error when trying to view transaction details [closed]

Every time i try to click on any transaction history, it says, "Error. Transaction not available at this time." Does anyone else have this issue?
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1answer
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I have not received my bitcoin after 2 days and 115 confirmations [duplicate]

I have sent my first Transaction and waiting for it to arrive at another address but when i click on the Transaction ID 1 of the addresses is Spent and the other is Unspent? It only required 3 ...
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1answer
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How much bitcoin is being sent to someone else in this transaction?

From this link which is a bitcoin testnet transaction. How can we be sure that this transaction spent a certain amount of satoshis to an address from another wallet? In this case the transaction is ...
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Execute multiple transactions atomically on Ripple

I would like to execute two transactions, e.g. one from account A to account B and one from account B to itself, atomically, i.e. either include both transactions in the ledger or none of them. This ...
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2answers
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Transaction order in the blockchain

What is the difference between segregated witness (segwit) and canonical transaction ordering (CTOR) ?
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1answer
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Is there a way I can reach the owner of the wallet address

I mistakenly sent some bitcoins to a wrong address. The mistake was from the wallet address I was given. An extra letter was added, making the address 35 digits. Is there a way I can reach the owner ...
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Transaction confirmed but address balance not get updated ? [litecoin Testnet]

I have used litecoin testnet faucet for a transaction of 10 litecoin. the transaction was successful and I got a txid:768f9f7a913e5682e4b5248f21b113e84e00049aea89c08f32f3b9ad7f3d755d. I checked the ...
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3answers
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Find specific transaction in merkel's tree

We know the merkel tree is branchs of transaction hash so that root of tree is hash that show in block header. If i want to find a specific transaction, how i can?
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Bitcoin core wallet transactions and synchronisation

I have Bitcoin Core wallet. I wanted to know if each transaction I need sync the wallet? (I have a new business that accept bitcoin and I must to save each transaction)
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1answer
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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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Making a service like blockchain.info webservice using Bitcoinj library

In my project I need three type of monitoring on Blockchain network: Monitor all the transactions Monitor all new blocks Calculate confirmations for each hash blockchain.info exactly does the same ...
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Status: 0/unconfirmed, in memory pool. Cnee's address expired and reject this transaction [closed]

Internet connection was lost during transaction. Bitcoins gone, but no chance to confirm transaction at cnee side. So after some hours cnee's address expired and reject this trnsctn. Now, as 24H ...
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2answers
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Bitcoin sent to me in CoPay wallethas 4 confirmations, yet the money is “unavailable”? [closed]

I had some bitcoin sent to me, but the money is still unavailable after 4 confirmations. Also the wallet tells me a new version is available but doesn't update.
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2answers
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What happens when the verification of a manipulated transaction fail?

If a malicious miner changes the amount in a given transaction, the hash value of the block changes. Thus, he has to find the required hash value again in that block. Let's say he successfully found ...
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1answer
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find a CTransaction from a prevout in Bitcoin source code

I'm trying to come up with this function: CTransaction getTxFromPrevout(COutPoint prevo); The idea being... when a new transaction is about to be validated, it will go through all of it's tx.vin[i]....
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Proof of Work to Create a Transaction

I make a little bit of context, so if there's something wrong in my assumptions I'll be corrected. We can say that PoW solves essentially two problems: double spending and decentralization, in the ...
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Transaction broadcast mechanism

After initiation of transaction, transaction will remain in the memory pool of all peered nodes. How Transaction reach to the memory pool after receiving by the node? Do transaction broadcast to all ...
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1answer
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Bitcoin Tranaction can one trace in coming transaction to receiving wallet

I know you can trace a bitcoin trans,from where it left from and where it is on the block chain ... my question, "i was reading".... is it possible to trace a INCOMING transactions to ones receiving ...
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Number of main chain in a blockchain network

I just have a very basic doubt. Suppose there's a public blockchain network like Bitcoin comprising several nodes. Would it be possible that this network consists of multiple mainchains??I am not ...
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1answer
44 views

Segwit txin. Witness data association

I am trying to learn more about the bitcoin protocol and I am writing some python software to make a light wallet. I have advanced quite far and I have come across something that I dont really ...
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1answer
35 views

How can I avoid re-using a Bitcoin address more than once?

I have a fundamental confusion regarding Bitcoin addresses. Apparently, addresses are only intended to be used once for security and privacy reasons (see here, for example). If I think of addresses as ...
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1answer
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how to prevent losses after a hard or soft fork

i learned about hard and soft forks from this question; now i have a basic understanding about forks; but the answers of that question did not say what happens to transactions on the stale chain; if i ...
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31 views

Input transaction hashes not matching transaction hashes

I parsed blockchain .dat files. I wanted to find transaction input address for a given transaction input. For this I looked at "prev hashes" from inputs, reversed the byte order in them and then ...
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1answer
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Transaction is not Picked

I am new to block chain technology. I am struggling to understand below concepts: What if my transaction is not picked by the miners and what is the criteria for miners to pick? How can I rely on ...
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3answers
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Urgently need advise for unconfirmed transaction [duplicate]

I have a transaction as below which had not confirmed for more than 2 days. May I know what is the problem or what I can I do to speed it up? https://www.blockchain.com/btc/tx/...
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1answer
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Transaction records?

Can you track your payment if you do a transaction from person to person for a house rental if the seller doesn't follow through with their end of the deal and doesn't send the keys can you get your ...
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1answer
31 views

Unknown btc transaction

Could someone please explain what is this second transaction from the wallet 34UuFs8BtnbeJtdM9p4NBCHiP8MaD4f86n ? https://www.blockchain.com/btc/address/34UuFs8BtnbeJtdM9p4NBCHiP8MaD4f86n?filter=6 I ...
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2answers
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Ttransaction validation in the bitcoin blockchain

I am confused. What is exactly a validation of transaction in the bitcoin block chain? Please correct me if I am wrong. I know we need 6 minner to validate our transaction and those 6 minner check ...
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What does “Estimated BTC Transacted” mean? [duplicate]

I view a sample transaction, would you please see the sample image? It's very clearly that Total Input is 0.1B, Total Output is 0.0995, and Fees is 0.0005 BTC; 0.1=0.0995+0.0005 Estimated BTC ...
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Checking signature only vs. P2PKH

It is clear to me why it's potentially unsafe to only use a check on == in scriptPubKey. For one, not verifying a signature in the redeem script means that someone could impersonate the redeemer. From ...
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How does copying main stack prevent malformed unlocking scripts vulnerabilities?

https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch06.asciidoc In the original bitcoin client, the unlocking and locking scripts were concatenated and executed in sequence. For security ...
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1answer
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Have there been any examples of people manipulating transactions in a way that waiting for more than 1 confirmation would avoid?

A lot of bitcoin exchanges require some minimum amount of confirmations before they consider money deposited. Is there any evidence that this actually does anything? Has someone ever before ...
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2answers
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How to cheaply melt many micro UTXOs?

I know this was probably brought up before but I cannot find any good resources on some potential, at least theoretical way of achieving this. So basically I have a lot of UTXOs whose value is ...
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2answers
57 views

Bitcoind does not like ECDSA (r, s) pair produced by OpenSSL

I am writing transactions manually and have stumbled across a rather bizarre situation. Only one in a few of the transactions I broadcast to bitcoind is accepted, otherwise I get a REJECT_NONSTANDARD ...
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1answer
31 views

BIP 44 is scanning external chain really enough?

When reading the BIP 44 proposal I stumbled upon this paragraph about address discovery: We scan just the external chains, because internal chains receive only coins that come from the associated ...
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1answer
25 views

gettransaction cannot get address where it send from

Hi i have test few time with gettransaction method, it seem only show full detail about transaction when send inside node. But if i send from another address outside my node, gettransaction only show ...
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1answer
38 views

Can i use one pair public and private key for all transactions?

Can I use one pair public and private key for all transactions, digital signatures and wallet addresses? In the other hand, I have a private key and want to sign all transactions and have a public key ...
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1answer
31 views

Watch only address not update balance

After adding watch only address to my bitcoin core and perform some transaction that make my watch only address balance to 0, but when i run getbalance and listaccount with watch only is true, my ...
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1answer
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Create transaction with bitcoin core

Currently i'm working with bitcoin-qt for a while and now i have some issue that i wanna ask. -Is there a way to create transaction then submit it to network from wallet that NOT inside this bitcoin ...