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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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2answers
803 views

Block confirmation speed

Based upon any standard you think relevant, how quickly are current blocks being verified for rule-following such as correct balance tallies, true transactions, correct rewards & fees? Is this an ...
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1answer
357 views

How to accept BTC payments

I'm developing a website that will be accepting BTC as a form of payment. I (technically) know how to accept payments, I'm currently experimenting with the daemon and the Python-BitcoinRPC library ...
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2answers
449 views

Transaction confirmation

How does transaction confirmation work in bitcoin-qt? I suppose, client does not have addresses index with balance on each of them (because there is not such console/bitcoind commands). Looking ...
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1answer
669 views

Can a transaction be in two blocks?

What happens with a valid block which contains a transaction which was already included in previous blocks? Is such a block accepted by other nodes in the network or discarded?
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1answer
876 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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1answer
619 views

Transaction remains not confirmed

On Multibit, one of my transaction to Bitstamp is not confirmed since 5 days (Status icon displays a white square). Apparently the 0.0001 fee was paid. I don’t know where is the money neither what to ...
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0answers
82 views

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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2answers
5k views

Is it possible to run a miner to confirm transactions for a target address?

If I want to make a bitcoin transaction I need to wait 3-6 confirmations for my transaction to be accepted (by say an exchange etc) Is it possible to run a miner so that it is listening out for ...
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1answer
2k views

Bitcoin transaction with 0.0001 BTC fee not getting confirmed? [duplicate]

I sent the following transaction a few hours ago with Bitcoin-QT: https://blockchain.info/tx/b5682b48484a8752be62c6b4036eaf8a8f005d9ea75cbff434476b7506a9e3a2 And the transaction still has not been ...
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1answer
615 views

A transaction that does not get processed

Yesterday I moved 20 bitcoins from my wallet in MtGox to my personal wallet, twice. The two transactions were made in a short time (about 1 minute). Both were done toward the same recipient: ...
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3answers
526 views

Fee Paid vs Confirmation Time

I there a graph correlating fee size and confirmation time? A graph where I can see the fee paid by transactions which got confirmed in less than 20 minutes. Is there a graph like that?
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1answer
14k views

How does confirmation exactly work?

When user A sends Bitcoins to user B, user A signs the transaction with his private key. This signed transaction is being sent to the Bitcoin network and all the nodes collect, confirm and pack these ...
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2answers
503 views

No confirmations, waited for months!

I sent a payment of 0.9995 bitcoins back in April to my MtGox account. However I just checked and it has 0 confirmations. Additionally it doesn't show in my wallet or my MtGox account. Is it lost? Can ...
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1answer
420 views

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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2answers
161 views

What precautions to take when working with only one or two confirmations?

I am providing a service that accepts Bitcoin. In order to speed things up a bit, I am planning to reduce the number of confirmations I require before I consider the money to have arrived. I have ...
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4answers
2k views

How does a wallet use unconfirmed outputs as inputs after unconfirmed transactions?

I have 10 btc on address A. Using raw transaction, I send 5btc from A to B and set the change address as A itself. Now because the transaction from A to B is not confirmed I can't spend the remaining ...
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2answers
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Why did my Coinbase transaction take 4.5 hours to get in a block?

Why did this transaction take so long to be put in a block? I initiated a 7 BTC transfer at 6:13 PM Eastern Time from Coinbase to an external address in an over the counter transaction today. It was ...
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1answer
219 views

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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1answer
4k views

How many confirmations does bitpay wait?

I've made one purchase with bitpay, it has been received by the merchant who is stating "Payment received. Waiting for more confirmations". While this is fine, I find it quite odd I didn't manage to ...
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1answer
2k views

Get the number of confirmations for an external address

I'm building an application that tracks transactions between two points for multiple currencies, currently: BTC, BQC, BTB, FTC, LTC, NMC, NVC, PPC, TRC, WDC & YAC. I need a way to check the ...
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1answer
1k views

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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1answer
4k views

What happens to transaction once all the blocks are mined?

Once all the bitcoin blocks are mined(21 million limit has been reached) then would calculating the nonce still be so power intensive since the reward at this point of time would only be the ...
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2answers
3k views

how long do i have to keep Bitcoin-Qt open after sending coins

Can I close Bitcoin-QT client and power off my computer just after sending coins to someone or do I need to wait until 1, 2...6 confirmations?
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1answer
285 views

Why do first bitcoin transactions receive most confirmations?

My very first Bitcoin transaction has 740 confirmations, the next have 239, 212, 70, 43, 5, and 5, respectively. Is this just because my first transaction has had more time to get more confirmations, ...
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3answers
353 views

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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1answer
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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1answer
166 views

Is four confirmations enough if the network hash rate is so high?

The point of waiting for six confirmations is that it becomes near impossible to create six blocks vs the network. So double spends a effectively eliminated. With the hash rate of the network so high,...
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1answer
588 views

What are recourse or non-recourse transactions?

This may not be a Bitcoin-specific question, but I still think it's better to ask it here. I've seen discussions about accepting unconfirmed transactions, that it should not be done because of double-...
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2answers
62 views

Is there any discrepency on Confirmations?

Is there ever a situation where some bitcoin client thinks a transaction has 3 confirmations and another bitcoin client (or website) thinks a transaction has 4 confirmations, for example?
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2answers
721 views

What factors determine how long confirmation takes?

Simple question... What are all the factors (all of them!) that determine how much time X number of confirmations of a transaction takes?
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10answers
305k views

Why is my transaction not getting confirmed and what can I do about it?

I sent a transaction without (or with an exceptionally small) transaction fee using extremely small or unconfirmed inputs while the stars were not standing right. For whatever reason, I have been ...
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1answer
190 views

How many confirmations is enough if block creation rate is volatile?

Right now, the number of blocks created is increasing at a rapid rate. In addition I tried to import coins into a MtGox account and noticed that even after 8 confirmations the funds aren't available. ...
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0answers
155 views

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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3answers
85k views

How many confirmations do I need to ensure a transaction is successful? [duplicate]

As a regular user of Bitcoin, I often send bitcoins to other, or receive BTC from others, sometimes this might be a trade or deposit. Some traders require at least 6 confirmation, some require at ...
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2answers
4k views

How can I determine the number of confirmations of a transaction and its fee using the Blockchain.info DATA API?

How can I know if any given transaction has confirmations and has paid the miner's fee, using the BlockChain.info DATA API?
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1answer
281 views

Understanding speed vs. fees on various wallets, esp. Instawallet and original client

The Bitcoin Wiki don't say much about fees, more precisely if you have a choice between speed vs. fees (pay more, deliver faster). In fact, I don't yet even have a clue how fast are bitcoin ...
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1answer
428 views

Where can I learn more about BIP30; namely the exploit and the background discussion?

I'm having trouble understanding the bug that was fixed in BIP030, and how it would be exploited. Is the premise of this attack that there would have to be a netsplit and the chain was forked, then ...
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1answer
564 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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1answer
407 views

In ListReceivedByAddress, what is the meaning of Confirmations if the address is reused?

The API ListReceivedByAddress allows me to view a list a sum* of all the transactions that an address has received. This returns an array listing the sum of what was sent. If the address is reused ...
3
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1answer
4k views

What is a transaction's step-by-step life cycle?

I'm trying to understand a transaction's lifetime and haven't yet found a technical, linear "timeline" of events that occur when a P2P transaction occurs. This is my understanding so far; please ...
3
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1answer
171 views

Is the current number of confirmations visible somewhere in the raw block?

Is the current number of confirmations visible somewhere in the raw block output created by blockexplorer or blockhain.info? Is this information available in the raw stream or is the number of ...
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4answers
3k views

How important is the fee for speed of confirmation?

I am developing a Bitcoin application, so I am sending a lot of "toy" transactions for testing, with 0 fees. But it seems that those take forever to get confirmed. (Right now I am waiting 45 minutes ...
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3answers
3k views

How does SatoshiDice operate with 0 confirmations?

I understand they use your bet as an input, but what does that mean and how do they do it? Can they use the standard bitcoind as a server against which to run the API from?
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2answers
2k views

Can I spend a coin sent to myself before it confirms?

If I spend the entire balance in my wallet to another address in my own wallet, do I need to wait until it gets one confirmation in order to spend it, or does the client know it is my own funds and ...
10
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3answers
6k views

Why does blockchain.info report “Estimated Confirmation time” not as 10 minutes?

Currently, it is a timer which counts down from 10 minutes starting when the transaction is first seen. When the timer reaches 0 minutes, it switches to "Unknown / Never." It is my understanding ...
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2answers
2k views

What's the longest chain of orphan blocks? (How many confirmations have been necessary?)

I believe my two title questions are the same (are they?): Heretofore, what is the longest chain of orphan blocks (of N blocks), such that if someone didn't wait for N+1 confirmations, they may have ...
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4answers
6k views

Will transaction confirmation time be reduced as the network size increases?

Right now it takes 6 confirmations, which takes about an hour to verify a transaction. Will the rate at which transactions confirm become faster over time?
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1answer
2k views

Why do some transactions take months to get into a block?

This page at bitcoincharts shows a list of transactions that didn't get included in a block yet. Many of them are from 2 or 3 months ago, even though they include a fee. What's going on? Why haven'...
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1answer
154 views

Help regarding an online wallet to local wallet transaction? [duplicate]

Possible Duplicate: Why is my client software not receiving bitcoins? I use an online wallet most of the time but that was recently hacked. How I have yet to determine. Anyways, I have since ...
11
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1answer
853 views

How has the problem of waiting for confirmations been eradicated?

On the bitcointalk forum, evoorhees wrote: For a long time people said the "waiting for six confirmations" was a significant drawback, but most people understand that problem has been almost ...