Questions tagged [confirmations]

Confirmations correspond to the number of blocks that are dependent on a given transaction. This includes the block containing that transaction and all blocks after it in the blockchain. The more confirmations a transaction has, the more likely is it that it will remain in the blockchain permanently.

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Can I use the Bitcoin Core CLI to learn the block height at which a transaction was mined?

I am interested in figuring out at what height a transaction was mined, but I cannot find the right command to extract this information. Perhaps it's not possible? My Bitcoin Core was not involved as ...
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What is the point of confirming a bitcoin transaction more than once?

Given that the bitcoin blockchain is immutable, why is there a need to have more than six confirmations for the same transaction? I was under the impression that a bitcoin transaction is 'official' ...
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Is it correct to differentiate between a validated bitcoin transaction and a confirmed bitcoin transaction?

From my understanding, a transaction is first 'validated' by nodes once a transaction is propagated - so in the early stages. These validated, but unconfirmed, transactions are then collected by ...
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what kind of a double spend attack is a career attack?

there is an article that name different type of double spent attach like "Several variations of attacks could allow miners with bad intentions to double spend. Included are the Finney attack, ...
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Can Finney attacks only be made by miners?

I read this article about double spending attacks. The article has a sentence that goes like this: "Finney attacks can only be executed by miners, and are therefore fairly technical and obscure.&...
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What is the downside of having a default setting in which nodes will invalidate blocks that comprise a surprise reorg?

Suppose that suddenly, out of nowhere, a longest-chain appears that reorgs the last 15 blocks. Such an attack could be accomplished from time-to-time even by a minority attacker who is either lucky ...
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what is the confirmation section in the block info?

in the details of a bitcoin block there's a section called block confirmation (which is different than transaction confirmation), first i thought it was the number of the blocks that are created after ...
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Okay so i sent btc from another wallet to my blockchain wallet since yesterday. It’s been over 16hours now and I haven’t received the btc in my wallet

I sent btc from my bitnob wallet to my newley created blockchain address. It’s been over 16 hours with 115 confirmations and yet the money isn’t in my blockchain walllet. Help anyone?
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It takes longer to transact your money Bitcoin! Why?

When it says transactions takes up to 10 minutes, Why do it take more then two minutes when you transfer money into another account
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Is it safe to close a wallet and switch off the computer when there are only one or two confirmations?

This happens every time I have to send Bitcoin somewhere - a small clock symbol opens up in the electrum wallet, and the colour slowly changes from orange to friendlier shades of green as the number ...
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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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How to check coins & confirmations amount programmtically without third party site

How do I check the amount of coins are in a crypto wallet? And how do I check the confirmations? Is this process different for each cryptocurrency? I'd like to check these without having to rely on a ...
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I have received £46,21745 in my Bitcoin account. Should I confirm it?

I don't have a Bitcoin account (I never made one), but I got an email 📨 that I have received £46,21745 in my account and my first payment is ready for my confirmation. I would like to know how ...
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Bitcoin: How does Proof of Work and single transactions align?

I'm reading papers since hours and still don't get one thing: A bitcoin transaction is an information like "Bob sends 2 BTC to Alice". This message is signed with Bobs private key and needs ...
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Why is this burn address starting to get confirmations?

Can anyone explain why the burn address 1111111111111111111114oLvT2 started receiving confirmations only on 8th June? 1st transaction is 11yrs? I thought a burn address doesn't get any confirmations, ...
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Does Bitcoin "confirmations" have nothing to do with fullnodes -- only miners?

Roughly every 10 minutes, a new "block" is created. If Joe sends Sue a satoshi, it will be at least 9 minutes and 59 seconds until they get 1 confirmation (as I understand it). Then, ...
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How many times a single transaction can be included into different blocks?

I would like to know is there a limit after which a miner cannot include a transaction into his block.
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How to configure bitcoind to wait for X confirmations to make the payment submitted

I'm using bitcoind for an ecommerce website. Walletnotify setting in bitcoin.conf only fires twice (once the payment appears on the network and then when the payment is confimed the first time by a ...
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How the bitcoin network solves the double-spending problem by adding all the transactions that happened at the same time into one block

According to my research, I understand if person A sends 2 BTC to person B and at the same time person A sends the same input to himself before the input is considered as spent. So, now there will be ...
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Sent two btc transacton to payeer wallet less than the mnmum deposit,neither where credited

recently sent to my payeer wallet a 0.0002 btc transaction which is less than the 0.0005 minium btc deposit, then did a second transacton of 0.0003 btc thnking that it will sums up. Both transaction ...
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Why does a thin node need to know if a transaction is present in specific block's merkle tree?

I understand what a merkle root is and how merkle proofs work. It's all about thin nodes checking whether a specific transaction ID is in a specific block. So, thin node says: I have a transaction ID -...
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Why doesn't BTC reward miners for confirmations, too?

Currently as far as I know when a miner discovers enough 0s, he broadcasts his solution to the network in order to win the coins. While, he broadcasts his solution (which gave him the 0s), he also ...
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Where does "Included in Block" value comes from?

I was exploring transactions inside of a blockchain using this site, and inside of a transaction I noticed there is attribute called Included in Block and its description is: block this transaction ...
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Is history reversal a concern if the absence of attackers is assumed?

As described in the Bitcoin paper, the Bitcoin network may temporarily diverge, or "fork," as nodes may work on different blockchains. The network reconverges, however, as a node will always ...
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Modify the number of confirmations for an utxo to be ```safe == true``` in Bitcoin Core

I noticed that when I call listunspent on Bitcoin Core, UTXO with 0 confirmation are labeled unsafe, and thus prevented from being spent with sendtoaddress or fundrawtransaction. As soon as there's ...
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Cryptocurrency acceptance

I heard that the recommended waiting confirmation time for a bitcoin transaction is 6 blocks/ 1 hour. So a shop which lets its customer to pay in bitcoin without any waiting for confirmation would ...
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Transaction not complete for two days now

I sent bitcoins to a wallet using the QR code in order to be very sure of the address. It shows in my wallet that it has been sent. But the receiver haven't seen it in his wallet. I checked it online ...
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Why is my Bitcoin transaction not confirming today? [duplicate]

Please don't tell me that this also has something to do with this stupid Corona virus. First, it slashes the Bitcoin value in (less than) half. Then I can't order any groceries and have to sit here ...
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why is the number of confirmations rising yet i haven't been credited with the bitcoins? [closed]

I have been waiting to receive bitcoins for close to 7 hours now. The number of confirmations is currently 111, so why is it so? here is the transaction batch ...
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How to get both confirmed and unconfirmed transaction details of foreign(non-wallet) addresses from bitcoin-node server?

How to get both confirmed and unconfirmed transaction details of foreign(non-wallet) addresses from bitcoin-node server? Actually i have generated the addresses using third party library and sent some ...
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How Bitcoin mining contributes to confirmations?

Based on my knowledge I know (maybe wrong) when a miner is doing hash, he is inputting any arbitrary values, in order to get a value that can be hashed into something with certain preceding zeros. ...
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Transaction confirmed for hours, not available in balance

My bitcoin transaction has been confirmed for more than 24 hours and also on the block chain but it has not yet reflected on the receivers balance, all transaction details are correct,what could be ...
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Which wallets support double spending?

Which wallets support double spending? i.e. cancelling a transaction with 0 confirmations by using higher fees
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5 votes
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Bitcoin successfully deducted on sender wallet but did not reach receiver wallet

Here is the wallet address for receiver: 1Gouzjo9Jav1k4AmRoUJJMzidVfnMoSieS. I had used the Blockchair site to see and track status. Based on the details, account had seen receiving last 21 hours. ...
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2 votes
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Genesis block coinbase transaction without confirmations

Why the coinbase transaction, comming from the genesis block, don't have confirmations? All the others coinbase transactions have confirmations, but not in the Genesis block.
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Is Block Finalization a valid development to remove the threat of 51% attacks?

https://www.reddit.com/r/btc/comments/bq8cqo/btctop_currently_has_51_hashing_power/eo2p4md?utm_source=share&utm_medium=web2x A recent comment from a Reddit user in response to BTC.top acquiring ...
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-1 votes
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I made mistake sending Bitcoin to old generated address in nairaex ...the transaction still writing unspent...how can I get my Bitcoin back

I got 22 confirmation for Bitcoin not up 50$ and still unspent ,ow can I get it reverse back ,it more than 4hours
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2 votes
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Negative number of confirmations for a testnet transaction on blockexplorer

I am curious about the test transaction f72f59a32c1bac47ec87bc3678ec44e98eece5e235d29d79cd1f5461ccc5bf38. Depending on which site I view this transaction, the number of confirmations is positive or ...
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Blockchain.info confirmation misunderstanding

I have some misunderstanding regarding how confirmation work on blockchain.info. If we go to payment history we can see info about confirmation in two places. First in history of all transactions. ...
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What does "Nonstandard output" mean on Tradeblock transaction page?

I tried to send bitcoin but the recipient hasn't received it. The trade block page shows "Nonstandard output" under outputs as shown in the link below: Tradeblock page for transaction I used an ...
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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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How to check if confirmation is done or not yet?

After sending Bitcoin to any address, how can I check if the transaction has at least one confirmation? Should I poll the transaction repeatedly or is there any event when confirmation is made.
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confirmations: 0 vs confirmations: -1?

I'm looking at a bitcoin clone, not sure what codebase it was cloned from, but I've noticed that the listSinceBlock output sometimes includes: a receive that has 0 confirmations a send that has 0 ...
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2 votes
2 answers
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Why do transactions take so long to confirm in testnet?

I have created a transaction with high miner's fee and it is now in mempool (in testnet): https://live.blockcypher.com/btc-testnet/tx/abcc4ce473f490896e87102fe3ffb857ff735a0fc97525dadf9c5b0ed5410f9f/ ...
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1 vote
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How do I know one transaction has confirmed?

I am running my bitcoind with -zmqpubhashtx optional, and I receive notification once a new transaction has broadcast to public chain! I can also parser it by getrawtransaction and ...
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Shortest and Longest block interval time ever recorded in Bitcoin

Bitcoin block interval time is on average 10 minutes, that is the difficulty is adjusted in such a way that every 10 minutes a miner will manage to find the right hash. This is just an average time ...
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Is it normal to get 60 confirmations for a transaction in blockchain

Is it normal to get 60 confirmations for a transaction in blockchain and still it is not received and confirmed, can you help I m worrying as this is my first transaction, did I forget anything
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What happened to Bitcoin testnet? [duplicate]

What happened to Bitcoin testnet? Confirmation time is very short. 10 confirmation occurred in three minutes. I use Bitcoin core v0.16.0 (64-bits)
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Definition of confirmation time in blockchain.info, Part 2

In my previous question (Determinant of confirmation time), I asked "What will be the definition of confirmation time and data used for https://blockchain.info/charts ?" Now I read "The classic ...
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Determinant of confirmation time

There seems to be a lots of variations in confirmation time. https://blockchain.info/charts/avg-confirmation-time I would like to understand factors that affects the confirmation time.
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