An unconfirmed transaction will eventually be accepted into a block by whichever mining pool mines the block, or the transaction will eventually be rejected by the bitcoin network after an . Dec 06, · Much like as mentioned before, you can re-spend the unconfirmed, incoming bitcoins to yourself, including a fee high enough to compensate for the initial low fee transaction. If the new fee is sufficient, the transaction should typically confirm within a couple of blocks. The only other option is to ask the sender whether he used Opt-In RBF. In July , Bitcoin developer Gavin Andresen has highlighted a source code rule that imposed a BTC minimum transaction fee. At today’s market valuation of bitcoin (approximately $), the transaction cost would be $ But at the time, it was cheaper than a few cents.
Bitcoin unconfirmed transaction feeCan A Bitcoin Transaction Be Unconfirmed Forever? – FireStake
Most likely there will be free capacity in the network after some hours, some days or a week. In periods with free capacity, even low-fee transactions will pass. Rarely one has to wait longer than the next Sunday evening. The original transaction may eventually be forgotten by the network. Some wallets will then offer to create a new transaction, Mycelium will offer to delete the old transaction, and with some luck a "double spend" will be possible - though this is very unreliable as the original transaction may be purposely or accidentally rebroadcast both by the sender, receiver and any third-party.
This probably won't help at all, and it's the exact opposite of 0b, so it's probably not a good idea. If the original transaction is marked up with "RBF allowed", most of the network will accept a replacement transaction with a higher fee. Not all wallets supports setting this flag, and even fewer has RBF turned on by default - for a good reason, the RBF protocol allows an unconfirmed transaction to be reverted, so using the RBF-flag is a terrible idea if you want someone to trust a zero-conf transaction.
Miners and nodes are supposed to ignore the double spend transaction - but you may be lucky. You may need to use specialized software to perform such a double spend. It may work, either because the original transaction has ended up in a "ghost-like" state where it's known by some nodes but not others - maybe some miners are unaware that you're doing a double-spend - or it may work because some miners deliberately accepts double-spent transactions as they can earn more fees on it.
This may of course not always be possible, but If you can spend this one with a higher fee, the transaction may go through faster. Some wallets have a menu option for "accelerating" the transaction through "CPFP". In some wallets one can manually decide what UTXOs to include in the transaction. One can also send all the funds in the wallet i. If you can take out a backup seed phrase from your wallet, it can most likely be used in Electrum or Mycelium.
It looks like your transaction finally went through. I've had a transaction take longer than 24 hours due to not including a large enough miner's fee. And currently there's no way to cancel a transaction after it's already sent, even if it's still unconfirmed.
So it's a good idea to triple check the amount you're sending, the transaction fee and that it's going to the correct address. I think it would be helpful if bitcoin had this feature in the future: cancelling transactions while they're still unconfirmed.
Basically, you can double spend the input and add transaction fees. Firstly, this sounds crazy but it works! Unconfirmed transaction means that your transaction is being broadcast through the network until some miner write it down into a block. If the unconfirmed transaction is not confirmed into the blockchain after some days, it is deleted from the network.
Nowadays, there is no easy way to delete your unconfirmed transaction. Unless you broadcast it again with a higher fee. In that case, the one that enters first into the blockchain probably the one with higher fee will automatically delete the other one from the unconfirmed pool after a propagation delay.
While your transaction has not being written into the blockchain, it means that you haven't spent your bitcoins yet. Theoretically, you could still write a transaction into the blockchain spending such bitcoins the way you like it.
However, the problem is that not the entire network accept that. Probably, you would have to broadcast it via the console of a bitcoin client. If you're one of the recipients of the transaction i. From what I hear, you can specifically select the inputs for transactions on blockchain.
If you're comfortable doing so, you might want to try to export the private keys corresponding to the unconfirmed transaction and export it into another wallet in order to create a doublespend transaction to recover the funds.
Finally, you'd always have the option wait it out, or to get in touch with blockchain. Note: I've never used blockchain.
The bitcoin mempool is currently backlogged, which is causing a delay with transaction confirmations. This is impacting the entire bitcoin network, not just Blockchain. An unconfirmed transaction will eventually be accepted into a block by whichever mining pool mines the block, or the transaction will eventually be rejected by the bitcoin network after an estimated one to seven days. If it eventually is rejected, then the funds would remain at the bitcoin address they were sent from.
The only thing you can do at this point is to wait and see if the transaction is accepted into a block. Like all wallet providers, Blockchain. This is always dependent upon the bitcoin network of miners, which we are not a part of. If transaction is unconfirmed you may just double spend it. It would probably require creating a transaction manually I have used node.
I would suggest also paying a bit higher fee for the new transaction being confirmed before the old one and not reusing any of source addresses used by either the old or new transaction, as double spend is easy to detect and people may not trust you.
If the point is to just make the original transaction confirmed you may just try to resend it using console. It sometime helps as unconfirmed transactions are broadcasted by the network only for limited time. If you have access to the core API and there is 'change' from the txn, spend the change with a high fee:.
Lookup the txn, the change address is the zero based output from the spend. For your own amount - figure the change amount minus a large fee. The lower the fee, the less incentive miners have to verify your transaction. As you saw above in the snapshot of the Mempool, the bulk of pending transactions are green and blue, i.
There is little incentive for miners to process these when they could be expending their hash power on more lucrative transactions. It looks something like this:. This is what an unconfirmed transaction looks like. You can see that it is not included in any block, but is still in the Mempool.
If we compare the fee paid for this transaction If you have crypto on Coinbase that you want to withdraw to another wallet or sent to someone else, you may be wondering how long it takes. If your transaction is stuck, you have a few options. The first - and the most boring - is to simply wait. Even with a very low fee, it is very likely that your transaction will eventually be processed.
If you really want to get your transaction through as quickly as possible, two strategies you can use are:. The Replace By Fee method is the simplest and most reliable way of pushing through a stuck transaction. It involves rebroadcasting the unconfirmed transaction again, but this time with a higher fee.
This works as long as the unconfirmed transaction really is unconfirmed, i. This way, the double-spend problem is avoided. Many wallets such as Electrum allow you to replace a stuck transaction with one with a higher fee. The idea is to create a new transaction B - the child - which uses part of the unconfirmed transaction A - the parent - as an input.
This new transaction should have a relatively high fee attached to it. For miners to confirm Transaction B they will also have to include Transaction A into the block.
If the fee of Transaction B is high enough to pay for both transactions, miners will prioritize it. There is a useful guide here if you find yourself needing to push a transaction through using this method. One benefit is that the recipient of a stuck transaction can push it through using the CPFP method, whereas RBF can only be done by the sender.
Transaction acceleration is basically a service offered by mining pools, where for a fee they will prioritize your transaction and put it at the top of their mining list. As the two methods outlined above work just fine, and transaction accelerators rely on trusted third parties, they should only be used as a last resort. Fee calculators can help you find out what to set your transaction fee as.
We have a great fee calculator that uses up to the minute information to determine the optimal fee for your Bitcoin transaction.
Most wallet clients and exchanges will automatically examine the blockchain to determine the best fee for your transaction. How long you bitcoin transaction is pending depends on the fee you set when you sent it. If you set low fees, you transaction may be pending for a very long time.
If you set very high fees, you transaction may only be pending for 10 minutes. Each block is added approximately every 10 minutes though can be more faster or slower than that. Inclusion in a block is an auction of sorts. The transactions that make it into the next block are the ones who bid the highest. Unlike transactions on the blockchain, bitcoin purchases on exchanges can be pending indefinitely.
That is because it is up to the exchange to decide when they are going to accept your payment.