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Cancel Unconfirmed Bitcoin Transaction Electrum

How To Clear A Stuck Bitcoin Transaction

How To Clear A Stuck Bitcoin Transaction

A Bitcoin transaction can fail to confirm, or become stuck, for many reasons. Stuck transactions may be confirmed after several days, but sometimes waiting isnt an option. Fortunately, many stuck transactions can be cleared using nothing more than a Web browser. This article shows how. The procedure described here should not be used by beginners trying to clear a stuck transaction of significant value. Doing so can lead to loss of money. This article describes a practical technique for creating and clearing a stuck transaction, but using this technique effectively takes practice and understanding. To get the most out of it, consider following the article as written and only commit a trivial amount of money. If any step describes a concept that doesnt make sense, find a way to understand it. Leave a comment at the bottom of the article. Ask a knowledgeable friend. Post a question to BitcoinBeginners , Bitcoin Subreddit , or Bitcoin Stack Exchange . Whatever happens, be sure you understand, at a high level, the procedure described here before using it to clear a high-value transaction. For demonstration purposes, this guide instructs you to enter a private key into a live Web form. An attacker can intercept this information and steal funds. Private keys should generally only be handled within a safe computing environment. However, given the small amounts of money involved in this demo, the risk is minor. A description of a more secure alternative appears before the conclusions to this post. You can clear a stuck transaction with the method described here whenever you control one or more of its outputs. If you dont control at least one output, the network wont permit you to complete the necessary steps. Fortunately, you will control at least one output in many situations. Continue reading >>

How To Delete Unconfirmed Transactions On Electrum? : Bitcoin

How To Delete Unconfirmed Transactions On Electrum? : Bitcoin

Do not use URL shortening services: always submit the real link. Begging/asking for bitcoins is absolutely not allowed, no matter how badly you need the bitcoins. Only requests for donations to large, recognized charities are allowed, and only if there is good reason to believe that the person accepting bitcoins on behalf of the charity is trustworthy. News articles that do not contain the word "Bitcoin" are usually off-topic. This subreddit is not about general financial news. Submissions that are mostly about some other cryptocurrency belong elsewhere. For example, /r/CryptoCurrency is a good place to discuss all cryptocurrencies. Promotion of client software which attempts to alter the Bitcoin protocol without overwhelming consensus is not permitted. Trades should usually not be advertised here. For example, submissions like "Buying 100 BTC" or "Selling my computer for bitcoins" do not belong here. /r/Bitcoin is primarily for news and discussion. Please avoid repetition /r/bitcoin is a subreddit devoted to new information and discussion about Bitcoin and its ecosystem. New merchants are welcome to announce their services for Bitcoin, but after those have been announced they are no longer news and should not be re-posted. Aside from new merchant announcements, those interested in advertising to our audience should consider Reddit's self-serve advertising system . Do not post your Bitcoin address unless someone explicitly asks you to. Be aware that Twitter, etc. is full of impersonation. Continue reading >>

Canceling Unconfirmed Bitcoin Transaction

Canceling Unconfirmed Bitcoin Transaction

Canceling Unconfirmed Bitcoin Transaction Felix Kster February 16, 2018 104 no comments According to the web site blockchain.com , you cannot cancel or reverse your Bitcoin transaction. Even more experienced users can remember when they failed to double check their transaction details and they accidentally sent Bitcoin to the wrong recipient, or sent the wrong amount. As unfortunate as it is, transactions on the Bitcoin network are designed to be irreversible and nobody has control over them. Knowing this, its extremely important to make sure your transaction details are correct before you click send. You cant actually cancel a transaction, but there are methods on how to replace your transaction. There are different reasons why someone would want to cancel their Bitcoin transaction, the Bitcoin network is seriously clogged now and if you have set a low fee it can be stuck in limbo for up to 1 week or you entered a wrong amount or wrong address. What Does Unconfirmed Transaction Mean? Well according to Bitcoin.com an unconfirmed transaction is a transaction in the network that the miners have yet to confirm. Typically, confirmations take roughly 10 minutes. However due to the increased popularity of the Bitcoin network confirmation times have increased quite a bit and can sometimes take op to an hour or more. There are solutions in the works to deal with this issue, as well as a lot of discussion within the Bitcoin community around the best way to go about it. If a transaction fails to confirm after 72 hours, the funds will be sent back to the original senders wallet. There are two different ways on how to cancel or replace your Bitcoin transaction: RBF or Replace By Fee Transaction Double Spending by Setting a Higher Fee We will look into these methods more carefully. Continue reading >>

I Want To Cancel Unconfirmed Bitcoin Transaction

I Want To Cancel Unconfirmed Bitcoin Transaction

i want to cancel unconfirmed bitcoin transaction i want to cancel unconfirmed bitcoin payment, i tried to sweep wallet into other one for me but it print error. this is new TX with higher fees when i try to sweep, but i don't know how to broadcast it before the first one get confirmed : "hex": "0100000005bc8e5478e44366f4d0e81e0fef33e0ff28198edce6d0d8491b515347652721fd01000 0006b483045022100ca6a76ad5f30f1a08d84569596c0836399f2482f56d48c5a3dbf1297770d3f 9302207194de61bc2329a8ed71400f60f509ed244a6c5a25e6ecc738adc94d90be42d50121024e1 24f0581c66f35b34176be4cb75874183f3c099bfeefab568457be83ca2455feffffff94f900ac29 4d0af6c616a5661beafb102fecad0e6b7e9e11d2061997dd8897e0070000006b48304502210096f 984ec8a9d78b434cd661fbb665095c3513499aa6e0e185ee1fcdd8e015b1e02205339448f781f47 adea471cdbc0ed7a634013096fec3d95143789908543be1c6c0121024e124f0581c66f35b34176b e4cb75874183f3c099bfeefab568457be83ca2455feffffffccec08a7ed7c655f9f3f82bdb6c374 ead7993110d64979425ddcb6aa9e8d967b090000006b483045022100e4963e5a6f33b79978ae41f d05817dcc62897c739af239b879790beb48f9912f02200f44233bf016d36e7da1f5777fd2bf81c3 6269686cf636e7b5c348bd09c7ed1e0121024e124f0581c66f35b34176be4cb75874183f3c099bf eefab568457be83ca2455feffffffeaaf7ff2e0c285c14259feaa17a3617c932e0efc9fa131745f 82aad4686aa8bf000000006b483045022100fc589e6d6507024b3f53421fc684519358669273eae 3b7fc52c842d39c830fdc022000b7f78d60a8ab369ed6818604e92f67b10aa493b7311b66c1a1b2 be43b084ec0121024e124f0581c66f35b34176be4cb75874183f3c099bfeefab568457be83ca245 5feffffff1e745b54e317a26c828727ef0c344bc1c01f9f144ea5ee8396ba43b1c0eed943000000 006b483045022100bd96e22a5a5f28e16143b28007bb424066afb938162cad1adf4b87e9557b899 d0220311ca97cd23f6856bc0a3078992e5aab51263d5ae9021bc05899212ee9da7d3b0121024e12 4f0581c66f35b34176be4cb75874183f3c099bfeefab568457be83ca2455fef Continue reading >>

Frequently Asked Questions

Frequently Asked Questions

The seed is a random phrase that is used to generate your privatekeys. constant forest adore false green weave stop guy fur freeze giggle clock Your wallet can be entirely recovered from its seed. For this, selectthe restore wallet option in the startup. The seed phrase created by Electrum has 132 bits of entropy. Thismeans that it provides the same level of security as a Bitcoin privatekey (of length 256 bits). Indeed, an elliptic curve key of length nprovides n/2 bits of security. I have forgotten my password. What can I do? It is not possible to recover your password. However, you can restoreyour wallet from its seed phrase, and choose a new password.If you lose both your password and your seed, there is no wayto recover your money. This is why we ask you to save your seedphrase on paper. To restore your wallet from seed phrase. Create a new wallet, selectthe type, choose I already have a seed and proceed to input your seedphrase. My transaction has been unconfirmed for a long time. What can I do? Bitcoin transactions become confirmed when miners accept to writethem in the Bitcoin blockchain. In general, the speed of confirmationdepends on the fee you attach to your transaction; miners prioritizetransaction that pay the highest fees. Recent versions of Electrum use dynamic fees, in order to make surethat the fee you pay with your transaction is adequate. This featureis enabled by default in recent versions of Electrum. If you have made a transaction that is unconfirmed, you can: Wait for a long time. Eventually, your transaction will either beconfirmed or cancelled. This might take several days. Increase the transaction fee. This is only possible forreplaceable transactions. To create this type of transaction, youmust have enabled Replace by Fee in your preferences, Continue reading >>

Solved (admin Can Delete)

Solved (admin Can Delete)

Ok so let me get this right, you sent btc from one address to another and when you checked on blockchain.info later it had 1 confirmation so you sent that amount to a 3rd address but it's not confirmed yet. If that was it then not a problem but where i get confused is that you say blockchain.info dropped the 1 and only confirmation on the tx? I have never seen or heard of that happening before, are you sure you checked the right tx first? Blockchain.info has not always been renowned as being the best block explorer, have you tried others? Please help Ross and his family during this hard time by donating to the fund. Play at the best provably fair Bitcoin games site here: Ok so let me get this right, you sent btc from one address to another and when you checked on blockchain.info later it had 1 confirmation so you sent that amount to a 3rd address but it's not confirmed yet. If that was it then not a problem but where i get confused is that you say blockchain.info dropped the 1 and only confirmation on the tx? I have never seen or heard of that happening before, are you sure you checked the right tx first? Blockchain.info has not always been renowned as being the best block explorer, have you tried others? Someone sent btc to me. It got confirmation (if it didn't I could not use it). I sent that btc(with other btc) to another address and it stuck with 0 confirmation for 15+ hours. It have warning that this transaction spend input that is not confirmed. Also when you click show scripts and coinbase you can see that btc that stucked are from that first transaction. Becouse of that I checked first transaction and it say it is unconfirmed (you can see that when you go on links that I gave). In my wallet that transaction is confirmed with 70+ confirmation. More strange is wh Continue reading >>

How To Cancel Unconfirmed Bitcoin Transactions

How To Cancel Unconfirmed Bitcoin Transactions

All About BTC, LTC, ETH mining as well as other alternative crypto currencies How to Cancel Unconfirmed Bitcoin Transactions With the recent spike in the price of Bitcoin the number of unconfirmed transactions has increased significantly yet again and the Bitcoin blocks are getting closer and closer to being full. This essentially slows down transactions on the network and in order to ensure that your transaction is being processed faster you need to increase the fee over the standard recommended one. While this may be just fine for larger BTC transfers with fewer inputs, if you want to make a small transaction of few Bitcoin cents or a large one with a lot of inputs the network fees can get quite high. If the fee is not large enough and the waiting list is big you can easily end up with your transaction not getting confirmed and included in a block for over a day and that usually causes a problem, especially if you are paying for something in BTC. The solution would be to just cancel any unconfirmed transaction that did not go through for over 24 hours and it is not that hard to do it actually, although the process itself may require some time. Cancelling stuck Bitcoin transaction sent from your local BTC wallet requires you to run the qt wallet client with a special option that would remove all pending transactions that are not included in the blockchain. You need to run bitcoin-qt.exe (or the respective qt executable file depending on the OS you are using) with the -zapwallettxes parameter, but before running it make sure you backup your wallet.dat file. This will take some time as it will initiate a blockchain rescan, so be prepared to wait until the process finishes and do not forget to remove the extra parameter the next time you run your wallet as it is not need Continue reading >>

How To Fix Slow Bitcoin Transactions With Replace-by-fee

How To Fix Slow Bitcoin Transactions With Replace-by-fee

How to Fix Slow Bitcoin Transactions with Replace-By-Fee Bitcoin was recently spammed with tons of cheap non-financial "time-stamping" transactions. BitFury made a deal to prioritize them over genuine financial transactions effectively worsen the experience for everyone on the network. This resulted in almost 200 000 unconfirmed transactionssitting in Mempool for hours and even days. Those wishing to have their transactions confirmed in a reasonable timeframe have to fight for the block space by significantlyraising transaction fees. But what about those that don't pay ahigh-enough fee and their transactions have been stuck for quite some time already? Replace-By-Fee (RBF) is a recently reintroduced feature to allow a sender "bumping" the fee of a "stuck" transaction. In reality, a new transaction with the same outputs and inputs is created. The only difference is that the sender is able to include ahigher fee as an incentive for miners to include such transaction in a block faster. For the purposeof the tutorial, I'll be using Electrum 2.8.2 . The process should be very similar in other wallets that support RBF feature too. Before making any low-fee transaction, make sureReplace-By-Fee option is turned on. Go to Tools -> Electrum preferences and change Propose Replace-By-Feeto Alwaysor If the fee is low. Say you want to try your luck paying a0.0001 BTCfee first (just to find out it's insufficient and your transaction won't be confirmed anytime soon). Choose the Replaceableoption and send the transaction. The transaction will be placed in Mempool which is a list of unconfirmed transactions. The size of Mempool is currently huge and it may take up to several days for some low-fee transaction to be confirmed. You can check the Mempool size at blockchain.info . Unconfirme Continue reading >>

How To Unstuck A Low-fee Transaction With Electrum?

How To Unstuck A Low-fee Transaction With Electrum?

How to unstuck a low-fee transaction with Electrum? I've sent a transaction with Electrum, but accidentally included too little fee. What can I do to speed up the transaction's confirmation or to replace it? I've just visited #electrum on IRC to get some advice. While restoring from a seed may make your wallet forget a transaction and allow you to resend it with a higher fee, abpa there told me that this sometimes doesn't work because the server will remind the client about the transaction if it's still in the server's mempool. abpa suggested using child-pays-for-parent to unstuck transactions, i.e. to send a transaction that spends the change output of the previous transaction with a higher fee to pay for both transactions. (Update:) Apparently, the Electrum developers have added GUI-support for CPFP in Electrum 2.8.0 on 2017-03-09. In general it is recommended to activate replace-by-fee when using Electrum. This allows updating the fee after the transaction was broadcast if it turns out that the first estimate was insufficient. The setting can be found at Tools > Preferences > Fees > Enable Replace-by-Fee. A method that should work most of the time is the "child pays for parent" method. It is explained here by user maservant: "Child pays for parent means, as the name implies, that spending an unconfirmed transaction will cause miners to consider confirming the parent transaction in order to get the fees from the child transaction included in the same block." While the post describes the general mechanism very well, I couldn't find a detailed description on how to apply it in Electrum. Hence, I wrote up a detailed description myself. You can find it here . First, find out if an output of the unconfirmed transaction went to yourself by checking the details in the "Hist Continue reading >>

How To Cancel An Unconfirmed Transaction On Blockchain With 0 Confirmations - Updated 2017 - Quora

How To Cancel An Unconfirmed Transaction On Blockchain With 0 Confirmations - Updated 2017 - Quora

I had to do this just last week. Was an interesting learning experience. I sent bitcoin to myself with a super low fee of about ~2 tenths of a cent (~.00000226 btc), when it should have been closer to 2050 cents of btc. No bueno. As others here have said, you need to repeat the transaction with a higher fee. This is called FSS-RBF, or First Seen Safe, Replace By Fee. Or maybe not the FSS part, Im not sure. You cant actually cancel a transaction, but you can replace it with a higher fee so it gets confirmed. In the future recovering unconfirmed transactions that got abandoned will be easier to use inside wallet UIs. These are the steps I took: Find the transaction somewhere on a blockchain site like Bitcoin Wallet by Coinb.in or localbitcoins. Use coinb.ins tools to replicate the transaction but leave off a higher fee. All transactions on the blockchain are done by sending the full amount in each address involved in the from wallet, and then you essentially receive change back to an address in the same wallet. For example, if I send 0.1 btc to myself but the address Im sending it from contains a balance of 1 btc, I will send 1 btc in the transaction and 0.9 - will be sent back to the originating address. It would be more complicated if more than one wallet address was involved (if you sent more than a single address held, for example). Exactly duplicate the transactions inputs and outputs, and get the unsigned text of the duplicated transaction. Use the New transaction page on coinb.in . Use the Sign tab to sign the above unsigned transaction. You will need bypass the friendly UI of your wallet (or check if your wallet software supports RBF natively, some might do at this point). If youre using Bitcoin Core, you can use the Help -> Debug Window -> Cons Continue reading >>

Solving Unconfirmed Bitcoin Transactions In Electrum

Solving Unconfirmed Bitcoin Transactions In Electrum

Tags bitcoin / electrum / child pays for parent / unconfirmed transaction Bitcoin is becoming more and more popular. The amount of transactions per day is increasing and is at an all times high: While this is good news, it also has its downsides. Because the size of each mined block is fixed to 1MB, the amount of transactions per block is limited. There is a lot of debate whether this should be changed. The consequence in the current system is that not all submitted transactions can be processed quickly. The time until a transaction is confirmed can therefore become rather long. Fortunately, the bitcoin network is based on market principles. The invisible hand takes care of this issue: By adding higher processing fees to your transaction you can make sure that it receives higher priority. Miners will make sure to include it in the next block, because in the end its all about the money! Sometimes, however, the fee youve assigned is too low and your transaction will take very long. It is even possible that it will never get confirmed. Recently, I experienced this case myself. My transaction was stuck for more than 24 hours because my wallet software, Electrum, was outdated. It proposed a way too low fee for the transaction and since I never had to change the default in the past, I just submitted it. After a few hours, I lost my hope that the issue will resolve itself. So I started reading up on solutions and came along quite a few: Manually removing the transaction from the wallet and double-spending it. This is inconvenient, because you have to stop broadcasting your transaction and then wait until the nodes forget about it. This can take an arbitrarily amount of time, i.e. up to several days. Otherwise, your new transaction will be declined as "double-spending". Using Continue reading >>

Fee Bumping - Bitcoin Wiki

Fee Bumping - Bitcoin Wiki

The fee required for a transaction to quickly confirm varies according to network conditions. Generally it floats around slowly, but sometimes it shoots up due to spam transactions or a series of randomly-slow blocks. In such cases, you may find that your incoming or outgoing transactions get stuck in 0-conf status for a long time. Wallets should avoid this in 99% of cases by accurately predicting an appropriate fee, and they should be able to gracefully bump fees in the remaining 1% of cases, but in general, fees are handled pretty poorly by today's wallets. This page gives exact instructions on how to increase the fee on a transaction that is currently stuck in order to make it unstuck. This is always done by creating a new transaction that will either spend the coins sent by the stuck transaction (called child-pays-for-parent , or CPFP) or replace the stuck transaction (called replace-by-fee , or RBF). The instructions vary significantly depending on your wallet software. Find your wallet in the table of contents, and then go to the section labeled "I sent the stuck transaction" or "I received the stuck transaction", as appropriate. In some cases, the instructions here become kludgy. Any time you're working outside of the normal wallet GUI, you're doing something that the developer didn't intend, and this could have negative consequences. Although we have tried to give good instructions, we can't guarantee that everything will work perfectly. If your wallet GUI doesn't directly support fee bumping, then the lowest-risk thing for you to do is to not bump the fee, and to just wait. This page is for those situations where you can't just wait. Often, the instructions on this page have to get pretty complicated. As such, we will frequently say stuff like "Take such-and-s Continue reading >>

A Practical Guide To Accidental Low Fee Transactions

A Practical Guide To Accidental Low Fee Transactions

A Practical Guide To Accidental Low Fee Transactions First of all: your wallet probably sucks, consider changing it. Second: Dont worry your coins are safe. Within three days your transaction either confirms or your coins reappear in your wallet. This is the short answer and it is probably correct about 99% of the times, but lets dive deeper for in-depth understanding, then examine your options if you dont want to just wait. Update: As /u/ismith23 noted , from Bitcoin 0.14 transaction reappearance happens after 2 weeks. A more correct answer might look like this: when you send a transaction with too low fees, it stays in the mempool of most full nodes (1) until it either expires, (2) until a miner picks it up and confirms in a block or (3) until some magic makes (1) or (2) happen. Sweet, isnt it? Lets decompose this sentence in the rest of this article. 1. When you send a transactions with too low fees You can also see in screenshot of the above blockexplorer the added fee was: 0.000451 btc and it actually displays the satoshi per byte, too: 236.13 sat/B, so you can safely conclude its going to confirm. 2. When you send a transactions with too low fees, it stays in the mempool of most full nodes What is the mempool? Why most full nodes? Full nodes keep unconfirmed transactions in their mempool. Some full nodes, with low resources dont maintain mempool at all, or only keep transactions above some fees, but it really depends on the node implementation, for example: [Source] Bitcoin Core has a default max mempool of 300 MB, after which point it will start kicking transactions and increasing the minimum fee to get accepted. In case you want to change that behaviour you can use the -maxmempoolsetting. Why is this relevant? There is a chance you added such a low fees that yo Continue reading >>

Accelerate Bitcoin Transaction - Bitcoin-en.com

Accelerate Bitcoin Transaction - Bitcoin-en.com

How to Accelerate Stuck Bitcoin Transaction When you pay someone using Bitcoin, the transaction is pretty much irreversible.For example, when A uses his Bitcoin wallet to pay B with 0.1 Bitcoin, once sent, the transaction is broadcasted to the entire Bitcoin network for future confirmation. In normal cases, the transaction fee added by the sender incentivizes Bitcoin miners to pick the the transaction and confirm it into Blockchain. However, if the fee is set too low, miners act reasonably and avoid picking up the low-fee transaction, thus the transaction may linger around unconfirmed for a long time. As a result, the receiver waits and waits and no confirmation of the fund is being received. The transaction is said to be stuck due to law fee. There are ways to clear a stuck transaction: Call abandontransaction RPC [1]. It only works on transactions that are not yet included in a block and are not currently in the mempool. For example, in Bitcoin Core, find and right click the transaction then select "Abandon transaction".If that option is greyed out, tellBitcoin Core not to rebroadcast unconfirmed transactions automatically by restarting Bitcoin Core with the-walletbroadcast=0option, and then hopefully you should be able to use "Abandon Transaction". Don't forget to turn walletbroadcast back to 1 (or remove it completely) after your old stuck transaction is resolved. "Replace By Fee" (RBF) - Using this approach, the sender may be able to initiateRBFto kind of double spend an unconfirmed transaction via a new transaction with the same outputs and inputs created. There are 3 different kinds of RBF - First-Seen-Safe (FSS) RBF, Full RBF, and Opt-in RBF. For Opt-In RBF, the only difference between the older transaction and the new transaction is that the sender is able to Continue reading >>

Why Is My Bitcoin Transaction Pending For So Long? Bitcoin Fees For Dummies

Why Is My Bitcoin Transaction Pending For So Long? Bitcoin Fees For Dummies

Last updated on December 8th, 2017 at 01:19 pm If youre reading this post I assume that like many others, you sent a bitcoin transaction and was kind of confused as to why its still listed as unconfirmed or pending after a few hours or so. I mean Bitcoin transactions are supposed to be instant right? In this post I want to try and explain in a very basic way how a Bitcoin transaction works and why the fee that you attach to each transaction has a crucial role in how long it will take the transaction to go through the network. Heres what happens when you send Bitcoins to someone Whenever you send someone Bitcoins, the transaction goes through different computers running the Bitcoin protocol around the world that make sure the transaction is valid. Once the transaction is verified it then waits inside the Mempool (i.e. in some sort of a limbo state). Its basically waiting to be picked up by a Bitcoin miner and entered into a block of transaction on the Blockchain. Until it is picked up its considered an unconfirmed transaction or a pending transaction. Anew block of transactions in added to the Blockchain every 10 minutes on average. However since there are so many transactions lately due to the price increase, and a block can only hold a finite amount of transactions, not all transactions are picked instantly. So you need to wait for a certain amount of time until a miner decided to pick your transaction out of all of those sitting around in the mempool. Once your transaction is included in the block it receives its first confirmation and its no longer pending. After another block of transactions is added it will get another confirmation and so on.heres a short video explaining this: How can you make sure your transaction will get included in the next block? Simple. By Continue reading >>

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