How do we check the time when a transaction hits x confirmations?


The first confirmation was in block 298902, so the third confirmation was with block 298904, which is timestamped as 2014-05-03 09:42:49 (66 minutes after it was first received).

However, this timestamp is later than the one in the block after it, suggesting that a timestamp was pretty far off. As Matthieu's answer shows,'s API includes the time that they first saw the transaction. This suggests that the actual time three confirmations was reached was around 2014-05-03T09:31:55.867Z, approximately 59 minutes after the transaction was created (since it was relayed by, I'm assuming the transaction timestamp there is...

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If I want to prove that I wrote a particular document before a certain point in time, it would be sufficient to generate the sha256 hash of the document and somehow arrange for that hash to appear in the blockchain.

Is there an easy way to do that simply by sending a transaction and leaving it to the miners to arrange for it to get into the blockchain for me?

One way that occurs to me is that I can treat the hash as a private key ( will tell me the address and private key that corresponds to any given input), and send a Bitcoin to the corresponding address. Then when I publish the document anyone can go through the same process and see the date of the transaction in the blockchain.

That seems a little convoluted. Is there a simpler way? Ideally free, not computationally intensive, and not requiring any special software to make the timestamp or to verify...

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With the recent rally in the bitcoin price, there has understandably been a large increase in the amount of users and transactions. This is pushing the already congested bitcoin network to its limits, as the blocks do not have enough room for all the transactions.

This means that your transactions may stay in the Pending state for longer than normal as they wait to be picked up and confirmed on the blockchain.

How to Tell if Your Transaction is Affected

In your transaction history for your Coinbase wallet, click on the pending transaction that you want to check.

In the window which appears, note the number of confirmations that your transaction has received on the blockchain.

If your transaction has already been broadcast to the network (for outgoing Tx), you can click this "# confirmations" link to see your transaction on a blockchain explorer:

If your transaction is already on the blockchain but is waiting for...

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Every bitcoin transaction that's sent flows into what's called the mempool (short for memory pool) before it can be confirmed by miners. When there's a dramatic spike in transaction activity, the mempool can become congested because so many transactions are waiting to be included in the next block.

Bitcoin users across the network may notice their transactions sit as unconfirmed or pending for a longer period of time, and we understand this can cause users to be concerned about the status of their funds.

In most cases, your transactions will eventually confirm. It may just take longer than usual to do so.

Note: The Blockchain Wallet has an Advanced Send option that allows users to specify a custom fee and this can come in handy to help ensure your transaction confirms quickly during periods of congestion. We recommend this option to experienced users with an understanding of transaction fees...

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© Reuters. The Morgan Stanley logo is displayed at the post where it is traded on the floor of the NYSE in New York

By Elizabeth Dilts

NEW YORK (Reuters) - After Morgan Stanley's wealth management business reported record quarterly revenue and hit the high end of its profit margin target on Wednesday, analysts wanted to know how sustainable those results are.

Rising stock markets, another Federal Reserve interest rate increase and strong loan demand helped the business generate $4.2 billion in revenue and $1.1 billion in pre-tax income, both records for the bank.

Its pre-tax profit margin of 25 percent came in at the top of Chief Executive Officer James Gorman's targeted range of 23 percent to 25 percent by the end of this year.

But on a conference call with analysts, Gorman and Chief Financial Officer Jonathan Pruzan were peppered with questions about whether the business will lose deposits, face a talent flight or see lower-margin digital alternatives...

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Frequently in popular descriptions of Bitcoin and in the user interfaces of wallet software, a distinction is made between “confirmed” and “unconfirmed” transactions. What is the difference?

At a high level, a transaction is only confirmed when it is permanently included in the Bitcoin blockchain. The blockchain is a ledger of all transactions in the history of Bitcoin. It is append-only, meaning new data can be added to the end of the ledger, but data can never be removed once included. This ledger is necessary to prevent double-spending, which is a key technical challenge in designing any cryptocurrency.

How Bitcoins are Transferred

Recall that if Alice “owns” some quantity of bitcoins, this really means she knows one or more cryptographic keys which have been designated as the controller of those coins in a transaction on the ledger which transferred the coins to Alice. In order to transfer the coins to another entity, Alice will use these keys to produce a...

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If you have sent a bitcoin payment in the last couple of weeks, you may have noticed that your transactions are taking much longer than expected to confirm.

We have received your emails.

Since, like the Bitcoin network, we are currently working through a backlog, we want to thank you for your patience. With the high volume of questions we're getting about delayed payments, we decided it would be best to write a short explanation about what's happening with many bitcoin transactions right now.

Transactions on the Bitcoin network itself aren't controlled or confirmed by BitPay, but by the bitcoin miners which group transactions into "blocks" and add those blocks to the Bitcoin "blockchain" – the shared historical record of all transactions. When a transaction has been added to a block six blocks ago, it's considered a done deal.

Currently, bitcoin network traffic is unusually high due to increasing demand for transactions per block. Block sizes are...

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You are confusing validation with confirmation.

When you spend / credit your card, VISA etc. validate you have the card and then send a signal back to the register saying "its all good, give the guy his coffee"

However, there is a 3 month period where the transaction could be reversed on a whim and the merchant would not actually receive the money for your coffee. This is called a chargeback.

Finally, after 3 months or so, the money is deposited to the coffee shop's account.

With bitcoin, you scan a qr code with Bitpay / Coinbase, and within 1-2 seconds a green check mark pops up saying "it's all good, you can give the guy his coffee"

However, if a person with enough technical ability, and the drive to steal a coffee wanted to put their mind to it, there are some ways that they can attempt to swindle the store with some custom wallet software or an accomplice who has administrator access to a large mining pool. Most of which are easy to detect...

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A nice post for Bitcoin beginners from the Agora Forum explaining the simple logic being the confirmation system of the Bitcoin transactions:

Op can be found here: http://i4rx33ibdndtqayh.onion/index.php/topic,2905.msg30255.html
By Keno13: http://i4rx33ibdndtqayh.onion/index.php?action=profile;u=598


There has been a lot of confusion lately about how bitcoins are sent, where they go, and why they haven’t showed up in some peoples wallets in a timely fashion. This is just a quick guide/explanation about the process, to help answer any questions people may have.

Congratulations, you just bought some bitcoins for your dark net purchase! the next step is obviously to get it to your Agora wallet. You put in the wallet address, complete a few security pop ups and hit the send button. Fantastic! Now its time to explain what happens while you’re waiting…

Bitcoin is kind of like a giant game of pass the parcel. Except your parcel is a giant wad...

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With the increasing transaction volume the competition between transactions have been increasing as well. While a miner fee was not always necessary, they are currently.
As miner prioritize transactions based on their fee in comparison to the space they will take up, the transaction fee should be chosen according to the transactions size.

The Mycelium bitcoin wallet uses an Fee Estimator which provides a Fee for a transaction to be included within the next X blocks,
the following dynamic Miner Fees can be selected within the wallet:

LowPriority, to be included within the next 20 Blocks, ideally within the next 3hrs20mins. Will default to 0.08 mBTC/kb if no estimation is available. Economy, to be included within the next 10 Blocks, ideally within the next 1hr40mins. Will default to 0.15 mBTC/kb without an estimation. Normal, to be included within the next 3 Blocks, ideally within the next 30mins. Will default to 0.2 mBTC/kb without an estimation. Priority,...
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Please note that Xapo does not control how quickly transactions are confirmed on the blockchain. Transactions to other Xapo accounts are processed immediately, as they do not need to reach the blockchain.

When transactions are sent from Xapo to a non-Xapo account, the transaction is immediately sent as soon as it is made and Xapo always include miner's fees so that these transactions get picked up quickly. Once this is done, it is up to the blockchain to see how long a transaction takes to get mined!

However, when sending a transaction into Xapo, we can tell you that it is always consistent in the fact that Xapo will always wait for a transaction to have 6 confirmations on the blockchain before it is no longer 'pending' and is marked as 'complete' and ready to...

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By far the most common issue I’ve come across with ecommerce sites; duplicate transactions can inflate revenue and ecommerce metrics, altering your attribution reports and making you question your data integrity.

When talking about where to put the ecommerce tracking code, Google suggests the following for Universal Analytics:

… If successful, the server redirects the user to a “Thank You” or receipt page with transaction details and a receipt of the purchase. You can use the analytics.js library to send the ecommerce data from the “Thank You” page to Google Analytics.”

The missing step here is to ensure that either A) the user cannot access the page more than once or B) you have logic in place to make sure the transaction is only sent once. The biggest issues I’ve seen are when this receipt page is automatically emailed to the customer, with the ability for them to return as frequently as they please, each time sending a duplicate transaction.

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So to understand what a radical change this is going to bring, let's look at one industry, financial services. Recognize this? Rube Goldberg machine. It's a ridiculously complicated machine that does something really simple, like crack an egg or shut a door. Well, it kind of reminds me of the financial services industry, honestly. I mean, you tap your card in the corner store, and a bitstream goes through a dozen companies, each with their own computer system, some of them being 1970s mainframes older than many of the people in this room, and three days later, a settlement occurs. Well, with a blockchain financial industry, there would be no settlement, because the payment and the settlement is the same activity, it's just a change in the ledger. So Wall Street and all around the world, the financial industry is in a big upheaval about this, wondering, can...

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Today, from Mist Ethereum Wallet, I tried to send ether from my contract wallet to my account (the owner of the contract wallet. For the first time, I selected the lowest possible transaction fee, to see how long it would take. The transaction appeared (greyed) in the "latest transactions" list. After about 5 minutes, (~20 blocks), the transaction disappeared from the list, and the transaction was never confirmed or transferred. I checked the blockchain for the transaction with an explorer. No luck. Then the real problem started.

I assumed that the fee I selected was too low, and no miners took it, so I tried to do the transaction again (from my contract wallet to my account), and this time selected a high fee -- The same thing happened. The transaction appeared (greyed in the list), no confirmations came for several blocks, then the transaction disappeared from the list.

I then tried to transfer some ether to The DAO from my contract wallet. Same thing happened.

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We wait for 3 confirmations before we make your balance fully available. This is the industry standard for a truly secure wallet. This can take anywhere from five minutes to an hour depending on the bitcoin network.

Here’s how to check the bitcoin transaction status:

1. What is the transaction ID? You can get it from your wallet transaction history after you have made the transfer. It should look like this: 9JF7RrjB3pDlEz3cfOklWA7iTu3P6xLxyg

2. Go to
Type in the transaction ID into the Search field.
Look for where it shows you how many confirmations the transaction has.

If your transaction has 3 or more confirmations, the recipient should have received the funds. In case the transaction still hasn’t appeared in the other party’s wallet, please reach out to their provider.

If your transaction has 0-2 confirmations or unconfirmed, the transaction has left the sending wallet and is still processing.


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Measuring time on a website can be hard. Really hard. Every web analytics tool has issues, and that includes Google Analytics.

I’d like to clarify how Google Analytics track time on page and visit length. It’s probably different than you think.

Understanding Engagement Hits

The key to understanding Google Analytics time calculations is understanding the data that is sent to Google. We affectionately refer to these data as HITS. I know, that’s a terrible term to use when talking about analytics. But they really are hits.

Data hits are the image requests sent to Google Analytics. Three are six different types of data hits in Google Analytics:

Pageview hits Event hits Ecommerce transaction hits Ecommerce transaction item hits User defined hits (this is the predecessor of custom variables) Social plugin hits

While these are all data hits they are not all engagement hits.

An engagement hit is any hit that is not marked as “non interaction” and...

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How does Electrum work?¶

Electrum’s focus is speed, with low resource usage and simplifying Bitcoin. Startup times are instant because it operates in conjunction with high-performance servers that handle the most complicated parts of the Bitcoin system.

Does Electrum trust servers?¶

Not really; the Electrum client never sends private keys to the servers. In addition, it verifies the information reported by servers, using a technique called Simple Payment Verification

What is the Seed?¶

The seed is a random phrase that is used to generate your private keys.


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Your wallet can be entirely recovered from its seed. For this, select the “restore wallet” option in the startup.

How secure is the seed?¶

The seed phrase created by Electrum has 132 bits of entropy. This means that it provides the same level of security as a Bitcoin private key (of...

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