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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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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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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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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When we're calling `getrawtransaction` how does Bitcoin-core calc and verify confirmations?

if a transaction has 10 confirmation, does bitcoin-core check if the txid exists in the last 10 blocks? or its calculated based on transaction block number?
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Will a Litecoin LTC transaction with a low fee of .001 confirm?

Will a low fee of less than .001 ltc confirm using the coinomi wallet? And if it doesn't how long do you have to wait for it to return the coins back to you?
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How Long to Verify Payment?

I wish to allow people to purchase items at my shop using bitcoin. I've heard however that blocks take 10 minutes on average to process and transactions may not even be processed in the next block if ...
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Can anyone help me understand why my transaction won't confirm [duplicate]

https://blockchain.info/tx/23bddd7a323f5e772d4e3cb24c1c0687c8fcfa79066a0986082a8c101f1ce648?show_adv=true I have a high transaction fee, and not double spending. Any Ideas?
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Is it possible for two nodes to view blockchains differently?

Is there a chance, that at some point in time, two blocks will have different number of confirmations, according to different nodes? Like, with difference up to 3-4 confirmations? The problem I'm ...
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979 views

How fast can Ripple transfer money from bank to bank?

I had a debate last night on how fast Ripple is. If I am moving money from bank account a to bank account b, how long would it take? I was told by one person that adding a block takes 8 secs. Another ...
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208 views

Does a transaction with a lock time need more time to be confirmed?

I've made this transaction in the testnet: https://testnet.blockexplorer.com/tx/2f18c646a2b2ee8ee1f295bb5a0f5cc51c5e820a123a14b0c0e170f9777518bb It's a multisign tx with locktime. The locktime has ...
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Can one set how many confirmations MultiBit requires for a transaction to be accepted?

Is there any way for users to specify the number of confirmations for a transaction? If not, how many confirmations does Multibit require to complete a transaction? And does the required default ...
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Lower confirmation time schemes: any requirement between confirmation time and the probability to find a block during that confirmation time?

Bitcoin, the first blockchain-based cryptocurrency, set a 10 minute confirmation interval time; LiteCoin set a 2 minute confirmation interval time; DogeCoin set it at 1 minute; QuarkCoin set it at 30 ...
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483 views

Time to send bitcoins?

I was investing bitcoins in Coin Controller but I need the time to send it because they only give you 10 minutes. So I want to know how to calculate the time to send bitcoin with for an example 0....
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What are the economics of confirming a block of transactions?

From what I understand, CREATING a block to confirm or verify transactions is hard work, and is rewarded with 25 bitcoins, or something like $12,325 (depending on the daily exchange rate). But how do ...
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How to determine if a BTC payment has been done

Scenario: You have a website running on a remote server, and you want to accept BTC donations to a specific address (most likely yours) and to display a "Thank you" message automatically. How do you ...
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890 views

Quarkcoin's bitcoin-qt fork won't recognise unspent transaction

I've got a problem with my bitcoin wallet client, I got around 10 QRK by mining via a pool, transferred them to my local wallet and then sent them to btc-e, I got a dialogue box saying something about ...
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Transaction verification

I run a 0-confirmation tool. To track new transactions I use: bitcoind getrawmempool new transactions in new block not available in mempool (it seems I do not receive all transactions in mempool ...
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Armory client shows transaction unconfirmed

I am new to btc and am using the Armory client. Yesterday I transferred some btc to wallet from my MtGox account. The wallet showed the btc received within minutes, but, after 12 hours it still shows ...
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Instant confirmations with pre-published, locked, transactions

(Clarification: This is not an attempt to solve the problem of a vendor taking the money and running without handing over the merchandise. Problems like that can't be solved without some third party. ...
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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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Bitcoins reversed [duplicate]

I was wondering, are there bitcoins that don't get through the confirmation? What does it need for blockchain to cancel your transaction. Are there hacked bitcoins or how does that work?
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Bitcoin-cli balance minconf

When I use the getbalance command in bitcoin-cli and I set minconf to 1. Will it display the bitcoins with 1 confirmations and more? If this is true, what is a good amount of confirmations that will ...
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How big is the chance of double spending for 0, 1, 2, 3, 4, 5 and 6 confirmations?

I'm messing around with bitcoins a bit, and I'm now looking at the confirmations. In several places I read that 6 is the "normal" figure of confirmations needed to say a transactions has actually and ...
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Bitcoin client confirmation configuration

How do I setup Bitcoin client (bitcoin-qt, bitcoind) to wait only for 1 confirmation? Is this setting hard coded into the client? This setting would be useful for merchant to accept payments as soon ...
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How to measure TX confirmation latency

Blockchaininfo has datahere on the confirmation times for transactions. Unfortunately it is unclear how they collect the data, nor if one could get similar data from say Namecoin. I'd like to ...
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Suddenly no new confirmations on bitcoind

I'm using version 40000 of bitcoind and yesterday it stopped receiving new confirmations. Here is the getinfo for it. "version" : 40000, "balance" : x, "blocks" : 225454, "connections" : 8, "...
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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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201 views

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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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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How do I know how many confirmations a transaction has?

This is my first transaction and it's been since yesterday that I sent it. The website said wait for 4 confirmations then check email, but I haven't gotten any email so I don't know if it's gone ...
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why did blockchain.info misstate the value of this transaction

Here is a transaction to SatoshiDice for 0.01 BTC: But examine the corresponding entry in blockchain.info: They think this: Total Input 0.01974 BTC Total Output 0.01973 BTC But that is ...
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645 views

What is min time to get first confirmation for transaction?

How much time does it take to get first confirmation for transaction? I don't need the exact number of minutes, just some useful approximation. I found this chart of average confirmation times, but ...
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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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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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How to know whether my transaction is fraudlent after one confirmation?

Let's say if the transaction tx_1 has one confirmation. But the tx_1 is fraudulent. Can it be rolled back? Here I am storing the confirmed blocks and if my transaction is in the block-1 then the ...
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How can low latency and high scalability be achieved with increased block size in BTC?

One of the solution to address low latency and high scalability in BTC is to increase block size. A single block takes 10 min on average for proof-of-work. Increased block will also take same time for ...
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61 views

ways to improve bitcoin tx finalization time

On GDAX website, they claim that 3 confirmations is needed to finalize your tx in. I assume they've done thorough research on this and might've come up with some logic to protect themselves from ...
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103 views

Negative time estimation from estimatefees + mempool data

I am currently writing a time estimation tool for Bitcoin, and it gives me wrong estimations, so I am not sure if it's accurate and if I am not doing some error in logic. For example, I have this ...
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388 views

A Simple Question: Which blockchain (or ledger) do we query as a client?

As far as I know, every full node has a copy of the ledger (or its view) stored locally. A Generic Question: Which blockchain (ledger) do we query as a client? In my question query is a generic ...
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How many confirmations will Bitcoin core wait before I can send my coins out?

Using Bitcoin core 0.14, how many confirmations do I have to wait before I can send the coins out? Is there a method to wait X confirmations before sending coins out from specific addresses that have ...
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2k views

Speeding up bitcoin transactions?

I am writing an app which trades bitcoins and one of the biggest problems I have run into is that it takes so long to move them from one wallet to another. I thinks it due too mtgox and other sites ...
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593 views

How can i effectively split large outputs into smaller ones?

I have a wallet that pays lots of small amounts in the range of 0.x to 5 BTC. I filled the wallet with one transaction of 50 BTC, so there is only one large input contained. Now when i transfer 0.5 ...
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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 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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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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Is every bitcoin transaction (eventualy) validated by every miner? [duplicate]

I can see that my bitcoin transfers becomes real when my exchange detects 2 or more confirmations. I believe each confirmation is a validation. Am I correct? If so, How many confirmations will have ...
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Confirmations in block and trasaction

From the bitcoin RPC, both gettransaction and getblock returns a confirmation number in their response, are they always the same? Is there a case a transaction's confirmations isn't the same as its ...