Uncomfirmed Transaction

[Zaguru12]

Sorry there is a difference in bumping a transaction fee than getting a transaction ejected from the Blockchain. Bumping the fee is to encourage a miner in getting the transaction confirmed. While ejection from the Blockchain is getting it out and crediting it back to the wallet. 

You are getting it mixed the word bumping like RBF doesn’t increase the transaction fee of that exact transaction but replaces it with another transaction to the same address or to another address of your your choice same thing as the cancel option. What happens is the first transaction is still in the mempool unconfirmed, then the second transaction as a result of bumping is also there but since the second transaction is with a higher fee it is picked first by the miner and when it get confirmed it renders the first transaction invalid due to network stand and every node drops it.

But saying that you eject a transaction from the blockchain is actually not possible there is not computational ability now to remove a transaction from the blockchain because only confirmed transactions get into the blockchain.

So canceling transactions is just double spending your transaction to your address

[hosseinimr93]

What happens is the first transaction is still in the mempool unconfirmed, then the second transaction as a result of bumping is also there but since the second transaction is with a higher fee it is picked first by the miner and when it get confirmed it renders the first transaction invalid due to network stand and every node drops it.

This is not accurate.

It's true that both transactions are valid until one of them is confirmed. It's also possible that a node has the first transaction in its mempool and another node has the second transaction in its mempool, but it's not possible that a node keeps both of transactions in its mempool at the same time.

Any node that accepts the replacement transaction removes the first transaction from its mempool. Almost all nodes do so, if the first transaction has been flagged as RBF.

[Sauaba]

Hi
I have similar issue with unconfirmed transaction. About 15 days ago, I sent a value to a wallet but after some days it was still unconfirmed. Until now, I increased the fee twice but after this 15 days it shows me still unconfirmed.
2 days ago I sent a small value to the same wallet but with a higher fee and until now, it still shows me unconfirmed.
I´m using Electrum  and atm the position in mempool is 26.92 MB from tip.

Never had issues before, but now it takes too long to be sent.

I appreciate any help.
Thanks

And what is the difference between: ETA, Static and Mempool and which one I should use?

[digaran]

Hi
I have similar issue with unconfirmed transaction. About 15 days ago, I sent a value to a wallet but after some days it was still unconfirmed. Until now, I increased the fee twice but after this 15 days it shows me still unconfirmed.
2 days ago I sent a small value to the same wallet but with a higher fee and until now, it still shows me unconfirmed.
I´m using Electrum  and atm the position in mempool is 26.92 MB from tip.

Never had issues before, but now it takes too long to be sent.

I appreciate any help.
Thanks

And what is the difference between: ETA, Static and Mempool and which one I should use?

Can you tell us the amount you are trying to send? I just checked and the fees are around $15-20, if the balance is worth it, you could double spend with a fee of $18, other wise use ViaBtc https://www.viabtc.com/tools/txaccelerator/
Each hour they accelerate 100 free transactions, just read the page and follow instructions.😉

[hosseinimr93]

I have similar issue with unconfirmed transaction. ..........

The network is so congested. At the time I am writing this post, the required fee rate for getting confirmation is around 310 sat/vbyte.  
If you have used lower fee rate for your transaction and you want to get confirmation now, you should increase the fee rate to 310 sat/vbyte.

And what is the difference between: ETA, Static and Mempool and which one I should use?

Mempool and ETA are two different methods used by electrum to estimate the required fee rate.
With choosing static option, you can select the fee rate to 1, 2, 5, 10 and so on. Electrum also allow you to set the fee rate manually to any amount you want.

Take note that what matters is the fee rate you used for your transaction. It doesn't matter which method you used.
The more fee rate you use, the faster your transaction can be confirmed.

Can you tell us the amount you are trying to send? I just checked and the fees are around $15-20, if the balance is worth it, you could double spend with a fee of $18, other wise use ViaBtc

What matters is the fee rate, not the fiat value of the fee.

[Sauaba]

0.15 (50.3 sat/b.) and 0.008 (50.2 sat/b.)

[philipma1957]

give us the tx id's I can try to push them on viabtc for you $0 charge if they can be done.

[Smartvirus]

I sent a transaction yesterday that still was not confirmed so I cancelled it and resent today with a higher mining fee but still unconfirmed.  This is unusual as it usually confirms at least within a few hours.

It’s not unusual for there to be congestion on the Bitcoin network especially when preparing for a possible bullrun or moments when Bitcoin price is on the rise like we find in this current dispensation.

The price of Bitcoin have been hanging around $36k and there have been some news with the ETF which is perceived differently by individuals in the cryptospace but, it’s effect could be what we have now amongst others.

All that plays to increase the rate of transactions and as a result, clogging of the network which works on prioritizing transactions based on fees.
Perhaps you’ve had to bump your transactions twice, it didn’t change the fact that, they weren’t enough to fit in to high priority transactions. You could check the mempool to find out just what fee is good enough and you’ll know what your to work with for quick confirmation.

[philipma1957]

I guess th op got it to clear. Last I looked fees are dropping just a bit.

[Sauaba]

I tried to increase to 100 sat/b. but the fee is almost the double. If I don´t increase the fee, how long will it take to be confirmed?

[hosseinimr93]

I tried to increase to 100 sat/b. but the fee is almost the double. If I don´t increase the fee, how long will it take to be confirmed?

Assuming your transaction doesn't have any unconfirmed parent, 100 sat/vbyte is more than enough to give you fast confirmation. At the time I am writing this post, miners are including transactions paying around 75 sat/vbyte.

Two days ago when you posted about your transaction in this thread, your transaction was around 25 vMB from the tip and now that's around 10 vMB from the tip.
This means that the network has become less congested, but it's not really possible to know when your transaction will be confirmed if you don't bump the fee.

[dwyane36]

I tried to increase to 100 sat/b. but the fee is almost the double. If I don´t increase the fee, how long will it take to be confirmed?

There is no need to increase the fee to 100 sats/vbyte. As the guys posted above, use the viabtc service to accelerate your transaction. All you need to do is go to this service at the beginning of each hour and insert the hash of your transaction. Just be aware that there is an increased demand for this service due to the huge number of unconfirmed transactions in the BTC network at the moment. This means that the hourly limit of transactions on this service ends empty in about 3-5 minutes.
By the way, if you send a hash to this service, your transaction will likely be confirmed within a few hours, given that viabtc has mined 13 blocks for the last 24 hours.

[Samlucky O]

I sent a transaction yesterday that still was not confirmed so I cancelled it and resent today with a higher mining fee but still unconfirmed.  This is unusual as it usually confirms at least within a few hours.

I had similar issue like yours, but I was patient to wait for the confirmation of the transaction. I used blue wallet and I don't think if these options was on blue wallet otherwise I would have done like you as well. But checking from people's comment, I would have double spent. If I had deed that.

[joniboini]

But checking from people's comment, I would have double spent. If I had deed that.

If you're referring to RBF transactions, then there is nothing wrong with doing it unless you send it to some payment processor that doesn't support automatic transaction detection. At worst, you need to contact support to manually process your order, but they won't ban you for doing something like that. Most of them require at least 1 confirmation before your order is considered valid to begin with. CMIIW.

I recall Blue Wallet supports RBF and CPFP though[1].

[1] https://bluewallet.io/features/

[Pmalek]

I recall Blue Wallet supports RBF and CPFP though.

A wallet doesn't need to show a unique CPFP button or feature for you to create a CPFP transaction. Electrum has such an option if you right-click on a coin where that is suitable to be used. But if you have a non-custodial wallet with coin control and you are the recipient of the unconfirmed transaction, you can bump its fees by creating a new transaction from the unconfirmed coins and pay enough to incentivize miners to include both the parent and child transactions in a block. The same is true if you have change from the original unconfirmed parent transaction that you can then spend in a new transaction with higher fees. 

[hosseinimr93]

But if you have a non-custodial wallet with coin control and you are the recipient of the unconfirmed transaction, you can bump its fees by creating a new transaction from the unconfirmed coins and pay enough to incentivize miners to include both the parent and child transactions in a block.

This is true, but just to be more accurate:
To be able to do CPFP manually, what matters is your (non-custodial) wallet allowing to spend unconfirmed outputs.

In the case the wallet allows you to spend unconfirmed outputs, you can create a CPFP tranaction manually by spending the total balance even if the wallet doesn't support coin-control.

[Pmalek]

This is true, but just to be more accurate:
To be able to do CPFP manually, what matters is your (non-custodial) wallet allowing to spend unconfirmed outputs.

In the case the wallet allows you to spend unconfirmed outputs, you can create a CPFP tranaction manually by spending the total balance even if the wallet doesn't support coin-control.

Good addition. I had that in mind, but didn't consider mentioning it because my guess is that the most popular wallets most of us use and those that are being recommended on this forum, would have the option to allow users to spend unconfirmed outputs. I am not big on experimenting with new software just for the sake of using something new. Perhaps you can tell us if you are aware of any non-custodial wallets with coin control where it isn't possible to spend unconfirmed outputs?

[hosseinimr93]

I had that in mind, but didn't consider mentioning it because my guess is that the most popular wallets most of us use and those that are being recommended on this forum, would have the option to allow users to spend unconfirmed outputs.

You are right.

Perhaps you can tell us if you are aware of any non-custodial wallets with coin control where it isn't possible to spend unconfirmed outputs?

I don't know.
I think any wallet that supports coin control should allow spending unconfirmed coins and that's why in my previous post I said your statement is true. 

My point was that if you can spend unconfirmed coins, you can do CPFP manually without coin control.

[Pmalek]

My point was that if you can spend unconfirmed coins, you can do CPFP manually without coin control.

Right. Coin control only provides you with more possibilities and a chance to select those specific outputs that you want to use instead of allowing the software to make that selection. It's in no way essential though, just like you said. But it could make things more difficult. If you have a new wallet with multiple incoming unconfirmed transactions, not having coin control and the ability to select a UTXO could make it more challenging when figuring out the new fee rate for your CPFP transaction.