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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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206 views

Why is this transaction stuck?

https://blockexplorer.com/tx/286fefb79f1b0a14526997e8c7bcb4bd7a5665c953586f6bbcd09e441b192d3f this is my transaction blockchain hash This is first time I've actually seen something like this - the ...
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1answer
722 views

How long should confirmation (spendable amount) take?

My transaction already has 24 confirmations at blockchain.info, and the transaction is correctly recorded in Multibit. But there is no "spendable amount". I've already "Reset Blockchain And ...
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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
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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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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1answer
1k views

How can I accelerate confirmations in ledger nano s?

I am using Ledger Nano S hardware wallet to store my bitcoins. Last week, for an experiment, I decided to send bitcoins to hitbtc currency exchange with zero btc fees. I was wondering how many hours ...
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2answers
988 views

Does desktop wallet need to be online for the coins to mature?

Suppose, I've installed a new coin wallet, got synchronized with the network, now I've sent some coins to my wallet. Now, if I close my wallet (and stay offline), would it get maturity after X amount ...
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3answers
2k views

Transaction marked as “Newly generated coins” on Blockchain.info

On blockchain.info I saw a transaction labeled as "No inputs (newly generated coins)". Are these new coins generated from mining? How come that such a transaction can have 30 confirmations, while ...
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1answer
1k views

How do you calculate a reasonable transaction fee?

These days transactions are taking a very long time to confirm. Higher transaction fees could be a possible solution. I want to know how to calculate a reasonable transaction fee, which is not so ...
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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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2answers
352 views

As a solo miner how can I prioritize my own unconfirmed transactions?

Is it possible to prioritize my own unconfirmed transaction through my mining machines without being in a pool? And if its possible how can I do that?
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1answer
72 views

How to increment the number of confirmation of a transaction? [duplicate]

Sorry for this naive question, but honestly it is going to be a great help for me. Say I am tracking a specific bitcoin transaction('TX_1') form bitcoin core. A confirmed block had the transaction ...
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1answer
150 views

I bought 1BTC and the transaction was instantaneously, how?

So, I went to localbitcoin, I met a random guy at a Starbucks gave him the money and he transfered 1BTC with his cellphone to my blockchain.info account. I thought I would have to wait at very least ...
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1answer
3k views

Bitcoin-Qt wallet shows outgoing transaction as “Offline (0 confirmations)”

What is the meaning of a transaction status of "Offline (0 confirmations)" as opposed to "Unconfirmed (0 confirmations)" ? Does it mean that the transaction has not even been sent to the network yet? ...
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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
472 views

Why I haven't received my transfer from BTCGuild? [duplicate]

Possible Duplicate: How long does it take to receive bitcoins? At BTCGuild site it shows on Payout History: 2012-01-26 19:01:06 1BiNp9GmFJv1VuoudsJy8Ke79qvh6BPDzp 0.20000000 2012-01-22 07:29:27 ...
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1answer
39 views

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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1answer
60 views

Meaning of confirmation within n blocks? [duplicate]

I have a hard time understanding the meaning of below sentence: "To confirm within 48 blocks, a transaction fee of 1 satoshi/byte is required." I have 2 questions here: 1) Does this mean that the ...
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1answer
247 views

Why maturity rule on coinbase tx requires too many confirmations w.r.t an arbitrary tx?

For an arbitrary tx, it is often said that 6 confirmations is sufficient. However, maturity rule states that coinbase tx can't be spent until it receives 101 confirmations. Why do we have this ...
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1answer
217 views

Why are Bitcoin transactions sometimes confirmed instantly if blocks are mined every 10 minutes?

I have a basic question on Bitcoin and blockchain: Sometimes transactions are confirmed almost instantly, but there should be a new block every 10 minutes, so how is it possible? A transaction can be ...
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1answer
256 views

Why is the Bitcoin blockchain designed so that a block can be unconfirmed?

I have a basic question about blockchain and Bitcoin. After a transaction is confirmed and included in a block, it is said to have a depth (confirmation) of one. However I've read that many ...
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2answers
759 views

BlockChain scalability: How does BlockChain process multiple parallel transactions?

I just did some introductory research into blockchain technology and this is a breakdown of my understanding of how it works: Scenario: Assume Trump wants to send Obama 5 bitcoins. As soon as this ...
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1answer
360 views

Who decides who verifies Alice's transaction?

Let's say the transaction got picked up into a block by miner A and into a block by miner B. Both are working on those separate blocks, and each block contains information about Alice's transaction ...
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1answer
62 views

What, other that Fees and Luck, controls the time to confirmation?

Are there any factors that contribute to how fast a transaction is confirmed other than the Fee (sat/B), and a little bit of luck? Does it matter what service is used? How large the transaction is? ...
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1answer
233 views

Can I get confirmation time from txid (tx_hash)?

I want to get how long it takes time to get first confirmation for each transactions. My plan is this below. I'm subscribing mempool txes notification from my bitcoind node and I will save it with ...
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1answer
659 views

Is there some sort of algorithm to calculate transaction speed?

I'm wondering if there's a way that I can calculate how long it will take for a transaction of x BTC paid a y fee to get z confirmations based on current difficulty
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1answer
79 views

Is there any way to make a transaction invalid if it is not confirmed before a certain block?

It seems like it would be useful to avoid replay attacks if your wallet could specify that a transaction must be confirmed before say the (current+100)th block before broadcasting it I guess there ...
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3answers
91 views

Do I need N confirmations if I'm only worried about the transfer getting invalidated by a different block?

Say I ask Bob a lot of bitcoins in exchange for an expensive product. Bob sends it to me and I wait 1 confirmation to send him the product, because I trust Bob. I am only worried about the transaction ...
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2answers
153 views

Are there any stochastically dependent proof of work algorithms?

In bitcoin, the probability of discovering a block on the X-th hash is the same1 as it is on the Y-th hash. As such, the probability of discovery is stochastically independent. Are there proof of ...
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3answers
496 views

What happens if a TX was a double spend?

What happens if the 'High' risk option (one confirmation) was chosen and then the TX turns out to be a double spend in the end? Would the value deposited be revoked? Would the user be notified somehow?...
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1answer
797 views

Confirmation limit

When seeing transactions I see that the number of confirmations keeps increasing without any limit. I wanted to know if there is any time limit on including a already confirmed transaction in a block ...
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2answers
687 views

What does it mean to have -1 confirmations?

I have -1 confirmations for an inbound transaction on my Electrum wallet. What does is it mean to have -1 confirmations?
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1answer
676 views

How to get confirmations for incoming transactions?

I'm currently working on accepting Bitcoins on my website. To do this I create a new address for every sale. I know I can get the amount of bitcoins that were paid into this address by using ./btcoind ...
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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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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
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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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
126 views

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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1answer
61 views

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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2answers
358 views

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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1answer
43 views

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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1answer
52 views

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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1answer
460 views

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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1answer
207 views

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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1answer
135 views

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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1answer
86 views

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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1answer
961 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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1answer
198 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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1answer
219 views

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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1answer
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 ...