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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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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mSigna: Signed, send, but 0 confs despite high fee (0.001 BTC)

Tried to send my first tx from mSigna today. Receiving was painless, but the send does not get included into a block since half a day, and dozens of blocks passed. I unlocked the account, created ...
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With 100% segwit transactions, what would be the max number of transaction confirmation possible on a block?

With 100% segwit transactions, what would be the max number of transaction confirmation possible on a block? And, how many utxo can be updated by a block full of segwit transactions?
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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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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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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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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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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 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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What causes the 'uncertainty' when a block is still relatively new

I am currently looking into bitcoin and the underlying blockchain technology for an internship. More specifically, I am trying to grasp the confirmation process. Many sources I have used for my ...
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What does a negative “confirmations” value in listtransactions mean?

I sent a transaction on a small altcoin, and running listtransactions an hour later or so says -1 confirmations. It is forked from Bitcoin Core 0.8 and barely modified. What does this mean?
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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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How many days the verification could take? [duplicate]

I first time bought a smaller piece of bitcoin and wanted to do some shopping from that, but I still my wallet contains only not confirmed bitcoins. My questions are: Why the confirmation takes so ...
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how long does it take to get 6 confirmations with confidence of 99%

I had this question in an exam but I was not very sure how to solve it: Suppose Bob the merchant wants to have a policy that orders will ship within x minutes after receipt of payment. What value of ...
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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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0 fee transactions - possible that they never confirm?

I've made a Bitcoin tipping service for reddit: https://news.bitcoin.com/bitcoin-tipping-reddit-minitip/ Currently users pay a flat 0.1 mBTC miner's fee to tip others since it's done entirely on-...
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Why transactions' average confirmation times becoming more chaotic?

According to this chart, Bitcoin's transactions' average confirmation times are varying much more widely than they were a year ago. Why would this be? Is it because the daily transaction rate has been ...
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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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Why can bitcoins never be refunded unless the receiver agrees to send back the money?

I have used a number of ecurrencies and they all seem to share what I've never understood about BTC, which is that once it is sent, it's gone. Often BTC are sent but legally should be refunded, but ...
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Do transactions with old UTXOs take longer to confirm?

Suppose I do a transaction with an UXTO created years ago. Would that take longer to confirm because miners would have to look further back in the transaction chain to verify it?
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Stuck Transaction for almost 2 days, have paid fees [duplicate]

Can anybody please help with 1 transaction, its stuck already for 2 days, altho I did pay fees, not sure whats the issue, other payments sent after this has been confirmed already https://blockchain....
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Transaction with 0.0002 BTC fee but not confirmed sice 2 days [duplicate]

I'm a Bitcoin noob. This is my second Bitcoin transaction and I'm getting very nervous. My wallet (KryptoKit on Chrome) doesn't have a possibility to change the fees or anything on transactions. ...
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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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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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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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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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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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What is the “confirmation” field in a block?

What is the importance of the "confirmation" field in a block? How many confirmations are required to accept a block in a blockchain?
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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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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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When we can agree on mempool sorting order, we can just confirm first n-transactions that are at least 10 mins old. What's missing?

When we can agree on a mempool sorting order, we can just confirm first n-transactions (or 80% of transactions) that are at least 10 minutes old. Then, we can transfer (broadcast) the block header ...
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can someone explain what i did wrong here? (btc transaction with fee not confirming) [duplicate]

https://blockchain.info/tx/c782b48bba09dea21896b7c58292abaec81d7ce2db2975f30b77176dddad492c was the fee not high enough? i have never had an issue with fees using the recommended amount that bitcoin ...
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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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714 views

Streaming API for confirmed transactions?

Is there an API that makes streams transactions as they're confirmed? Everything I can find seems to just be putting out unconfirmed transactions in realtime, rather than waiting for confirmation. To ...
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How would one monitor an address for a transaction and 1 confirmation in PHP?

I have a small PHP script with my static bitcoin address shown. When someone sends any btc to that address, how can I get the PHP script to check if the transaction has had 1 confirmation? Do I have ...
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Using funds that have not been completely transferred yet for a new transaction

What happens if I start a new transaction with funds from a transaction which isn't 100% complete? Let's say, the incoming transaction shows 2/3 of the green dot, but the sum is counted as full by ...
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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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Confirm own incoming transactions

Is it possible to only mine your own incoming transactions? So you can confirm a Bitcoin transaction (only locally).
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How many confirmations do bitcoin escrow websites wait on average?

To me it seems very dangerous not to wait for 6 confirmations when running an escrow. The scenario I'm thinking of: a miner deposits a large sum of bitcoins the escrow waits for one or two ...
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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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Second, Third, Etc Confirmations taking a long time, why?

I have sent a bitcoin transaction of 0.18, you can see it here. https://live.blockcypher.com/btc/tx/22bacef7d4fb78e4e90cd04540daad257a39cb4ab4510f9e0efe5a88efaf0f87/ I included a fee of 0.002 even ...
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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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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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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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What technical properties does a confirmed Tx have that an unconfirmed Tx does not?

From a user perspective, each block confirmation reduces the probability that a transaction payment will be reversed. However from the perspective of the software, what happens when a transaction is ...
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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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what is the longest period for a transection to be confirm? [duplicate]

Today my friend transferred bitcoins to my account and up till now there still 0/no confirmation.so how long is actually the period for the transection to be confirm? it is almost 8hours ad still no ...
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1answer
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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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764 views

-walletnotify on 6 confirmations instead of 1?

Pretty straight forward. Right now im using -walletnotify to run some node.js code when i get an incoming transaction and when theres 1 confirmation. However, after reading around, i found out that 1 ...
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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 ...