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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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200 views

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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433 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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153 views

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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167 views

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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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
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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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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0answers
59 views

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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39 views

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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626 views

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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252 views

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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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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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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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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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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106 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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34 views

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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217 views

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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1answer
584 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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1answer
26 views

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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2answers
134 views

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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1answer
53 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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1answer
87 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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2answers
6k views

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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1answer
330 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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4answers
896 views

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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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
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
26 views

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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1answer
50 views

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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2answers
33 views

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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3answers
88 views

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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1answer
57 views

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 ...
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1answer
472 views

Bitcoin deposit stuck 0 confirmations high confidence/low priority [duplicate]

hi i have a deposit stuck in the blockchain im not understanding why, its been stuck for 7 hours now without any confirmations, what is the explanation behind why the transaction is stuck? https://...
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1answer
63 views

Confirmed Transaction

If a transaction gets a minimum of 3 confirmations, does that mean that the BTCs have reached the destination address? I have a case where the transaction has gone through multiple confirmations but ...
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1answer
289 views

What happens if I spend a bitcoin that has 1 confirmation?

Take these two transactions that happen one after the other: Transactions: 1) Exchange A -> (1 confirmation) My Wallet 2) My Wallet (With a high fee) -> Exchange B (needs 20 confirmations) ...
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1answer
3k views

How does transaction confirmation work through mining process? [duplicate]

Hi i am just a newbie in this thing but there is something i can not understand if blockchain keeps every transaction in it and creating a new block to blockchain takes so much time then doesn't it ...
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1answer
93 views

71 confirmations?

I'm not too worried if this doesn't work for some reason as it's not much money but can someone tell me what this spent thing means? It's been about 10 hours https://blockchain.info/tx-index/...
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1answer
104 views

How long should I wait to consider that the transation is “definitely” confirmed?

When one transaction is broadcasted, what is the probability that it won't be confirmed? (By probability, I mean the observed probability on the blockchain. If a person intentionally spend twice 1 ...
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1answer
2k views

Why hasn't my bitcoin transaction gone through?

So about 3hrs from now I made a transaction to a different wallet of mine and the money didnt come through in 20mins I checked the blockchain and the number of confirmations kept rising and its up to ...
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1answer
108 views

Significance of average block generation rate

I am stuck in this thought for a while regarding the block generation rate. My concern is, when a payer waits for 10 minutes to confirm that her transaction is included in a block, it suggests that a ...
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1answer
55 views

How can bitcoin be used for all transactions, even with only one confirmation? [duplicate]

If bitcoin is ever going to be mainstream, how can we get around the problem of confirmation time? I don't think I like the idea of having to wait an hour for my transaction to be confirmed so I can ...
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1answer
624 views

Creating An Altcoin: How to Lower or Increase Confirmation Times?

When Creating an Altcoin for fun, what variable/attribute do I change in main.cpp file to increase/lower the time it takes for confirmations to take place? Also can the confirmation times be changed ...
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1answer
312 views

How to get last transactions made to a non-wallet bitcoin address?

I know I can rebuild my block index by setting txindex=1 in my bitcoin.conf file and restart bitcoind with -reindex so that I can view non-wallet transactions using: bitcoind getrawtransaction ...
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2answers
85 views

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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0answers
14 views

What is the purpose of having multiple confirmations for Bitcoin? [duplicate]

For example, why does Coinbase require 6 confirmations for a Bitcoin transaction to be awarded instead of just 1? Is 1 confirmation not proof that the transaction is legitimate? Or is there something ...
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0answers
54 views

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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1answer
45 views

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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1answer
250 views

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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1answer
56 views

Definition of confirmation time in blockchain.info

What will be the definition of confirmation time and data used for https://blockchain.info/charts ? I would appreciate confirmation.