Have a question about cancel a transaction

[xiaolou86]

hello, I have a question about how to cancel a transaction which already commited to mempool but not confirmed?

if there is no way or tool to cancel a tx, is it need to develop one?

[Zaguru12]

To be clear, there is nothing like canceling a bitcoin transactions, what you can do is to double spend it to another or same address with a higher transaction fee than the initial one set for the transaction. This act is dependent on a the type of wallet you use, if the transaction wallet you use has the RBF bumping feee then you can double spend the already sent transaction that is if it hasn’t been confirmed yet.

What you do to like cancel that transaction is to spend it to the same address it is coming from with a higher transaction, this is what the cancel transaction feature you see on wallets do. But theoretically you can cancel an already signed and broadcasted bitcoin transaction.

You can use the above method if you wish use a self custodial wallet that allows fee bumping, but if it doesn’t then you will have to wait for the transaction to either be confirmed or be dropped; if the fee set is low.

[komisariatku]

hello, I have a question about how to cancel a transaction which already commited to mempool but not confirmed?

if there is no way or tool to cancel a tx, is it need to develop one?

If you use a wallet that supports the RBF feature, you can cancel transactions that have been broadcast to your own address by increasing the fees. Apart from that, to speed up transactions, you can also use the RBF feature to increase transaction fees. To be able to do this, you must have remaining bitcoins in your wallet, otherwise you cannot do it

To see how RBF works, you can check out this thread : https://bitcointalk.org/index.php?topic=5422456.0

[xiaolou86]

thank for the detailed explanation. I will go to take a look at the RBF feature

You can use the above method if you wish use a self custodial wallet that allows fee bumping, but if it doesn’t then you will have to wait for the transaction to either be confirmed or be dropped; if the fee set is low.

Thank you very much.

Another question: so it means the transaction may be dropped if the fee is too low?

[Zaguru12]

Thank you very much.

Another question: so it means the transaction may be dropped if the fee is too low?

If the transaction fee is too low and unfortunately the mempool congestion doesn’t reduces such that the transaction fee rate comes down to your range of fee then the transaction will be dropped. The default time is (24) 14 days from the day you broadcasted your transaction but it varies because nodes have different mempool settings so could still have it beyond those days which extends the time for it to be dropped. Also the wallet you might be using could have an in built rebroadcasting feature which will continually rebroadcast your transaction and then stopping it from getting dropped

Look into ViaBTC accelerator to see if you meet the conditions to use the free acceleration service

[hd49728]

thank for the detailed explanation. I will go to take a look at the RBF feature

To use RBF feature, your transaction must be RBF opt-in.

Did you broadcast your transaction initially with RBF opt-in? If wallet you use has an opt-in RBF, your transaction will have it with default setting.

If you are unsure, you can copy and paste your transaction id to https://blockchair.com/bitcoin and click on Additional information and see at a row for RBF Enabled

If your transaction is RBF opt-in, it will show as Yes.

[jrrsparkles]

Another question: so it means the transaction may be dropped if the fee is too low?

Yes, and that is what is called purging. currently, the value is



so every node that uses the default size of 300MB will drop the transactions that have fees of less than 23.2sat/vb but nodes use custom mempool size so the transaction will likely stay longer because it stays in some nodes.

[Solosanz]

@OP you can replace your transactions, but make sure the next transactions you use the same inputs like your previous transactions.

so every node that uses the default size of 300MB will drop the transactions that have fees of less than 23.2sat/vb but nodes use custom mempool size so the transaction will likely stay longer because it stays in some nodes.

But not all transactions that exceed the mempool size will be dropped, your transactions could be re-broadcast by your wallet or other nodes.

[Charles-Tim]

hello, I have a question about how to cancel a transaction which already commited to mempool but not confirmed?

if there is no way or tool to cancel a tx, is it need to develop one?

You can use wallet like Electrum or Sparrow to do that. But as Zaguru said, it is not actually cancel transaction, it is also a replace-by-fee transaction in a way the coin would be sent to one of your wallet addresses that you make the transaction from.

If you use a wallet that supports the RBF feature, you can cancel transactions that have been broadcast to your own address by increasing the fees. Apart from that, to speed up transactions, you can also use the RBF feature to increase transaction fees. To be able to do this, you must have remaining bitcoins in your wallet, otherwise you cannot do it

To see how RBF works, you can check out this thread : https://bitcointalk.org/index.php?topic=5422456.0

There are some wallet that support replace-by-fee to pump fee but not having it to cancel a transaction.

If the transaction fee is too low and unfortunately the mempool congestion doesn’t reduces such that the transaction fee rate comes down to your range of fee then the transaction will be dropped. The default time is 24 days from the day you broadcasted your transaction but it varies because nodes have different mempool settings so could still have it beyond those days which extends the time for it to be dropped. Also the wallet you might be using could have an in built rebroadcasting feature which will continually rebroadcast your transaction and then stopping it from getting dropped

Typo, you meant 14 days, not 24 days. What to take note also is the purging. If the purging becomes higher than the fee rate used for the transaction, the transaction will also be dropped from the mempool.

[coinerer]

hello, I have a question about how to cancel a transaction which already commited to mempool but not confirmed?

if there is no way or tool to cancel a tx, is it need to develop one?

Once a transaction is recorded in Mempool there is no way to cancel it. However, you can control the speed of this transaction by reducing and increasing the transaction fee. And if your transaction is pending for a long time for a small transaction fee and the block is not confirmed, then it will automatically fail the transaction. But you cannot cancel the transaction manually. This is because Bitcoin cannot be controlled by anyone, it is completely decentralized.  You can't control it at will, it runs on its own rules

[lombok]

As far as I know, once you have entered the pool, there is no way to cancel the transaction. The RBF feature only provides the option to increase or decrease transaction fees as far as I know and does not effectively cancel transactions, if the fee is increased there is a possibility that the transaction will be confirmed more quickly.

We recommend that before sending Bitcoin, we independently check whether the network is congested or not, whether the transaction fee has increased or not to expedite the sending process so that it is fast.

The only way now is to wait for the transaction to be confirmed, it may take 1 or 2 days 😅

[slaman29]

Thank you very much.

Another question: so it means the transaction may be dropped if the fee is too low?

If the transaction fee is too low and unfortunately the mempool congestion doesn’t reduces such that the transaction fee rate comes down to your range of fee then the transaction will be dropped. The default time is 24 days from the day you broadcasted your transaction but it varies because nodes have different mempool settings so could still have it beyond those days which extends the time for it to be dropped. Also the wallet you might be using could have an in built rebroadcasting feature which will continually rebroadcast your transaction and then stopping it from getting dropped

Also to prevent this rebroadcasting, don't open your wallet also as wallets with this auto feature will keep broadcasting your unconfirmed transaction.

If you really need to check, just go offline and open wallet. 24 days is a loooong time, I know

[Zaguru12]

If you really need to check, just go offline and open wallet. 24 days is a loooong time, I know

That’s a typo, the default is 14 days and not 24 days which is still subjected to the conditions stated above

[hosseinimr93]

Another question: so it means the transaction may be dropped if the fee is too low?

It's possible that most of the nodes drop your transaction from their mempool, but there is no guarantee that it won't be confirmed.
As long as there is no other confirmed transaction invalidating that transaction, there's a chance that the transaction is confirmed.

If you have broadcasted a transaction and you want to make sure that it won't be confirmed, you must create a new transaction using the same input and invalidate that.
Provided that the transaction is still valid, it may be confirmed one day even if you broadcasted it months ago and your wallet doesn't show it anymore.

[jrrsparkles]

so every node that uses the default size of 300MB will drop the transactions that have fees of less than 23.2sat/vb but nodes use custom mempool size so the transaction will likely stay longer because it stays in some nodes.

But not all transactions that exceed the mempool size will be dropped, your transactions could be re-broadcast by your wallet or other nodes.

That is why I said nodes uses custom mempool size will have OP's transaction. Rebroadcasting is another issue and some shitty custodial wallets and exchanges doing it to keep the transaction in the mempool even when they used  5/10sat/vbyte for the transaction with hundreds of inputs.

[Maus0728]

Thank you very much.

Another question: so it means the transaction may be dropped if the fee is too low?

Not like dropped more like it's too slow that when it resolves the bitcoin that had RBF applied meant that when it was delivered it got no bitcoin to deliver anymore. Think of it this way, you ask for someone to deliver you a package but they take about 3 days to arrive to get the package and deliver it to the address so you hire another one that will deliver it to the same address (same address for the sake of example) but this time they arrive in 12 hours but you have to pay more because they're faster.

[Litzki1990]

If you transact with mempool extra low, if mempool doesn't reach your set level, then after some time, your transaction may be canceled automatically, but once you submit the transaction, you may not be able to manually delete the transaction again. At present transaction fee is extra so we have to face many problems in transferring btc but if we try to transfer bitcoin by keeping mempool under regular monitoring then maybe it is possible to do bitcoin transaction with relatively less transaction fee. There are many people who have transferred bitcoins for important work but their transactions are still pending due to high transaction fees and this is a common problem nowadays.

[tabas]

Another question: so it means the transaction may be dropped if the fee is too low?

Quick answer: Yes.
The fees now are quite lower compared to the past weeks that we've got. Post your TXID and let's see how much you've paid for the fee if it's way too low with what's mempool's fee being asked.

The only way now is to wait for the transaction to be confirmed, it may take 1 or 2 days 😅

Or it may take longer than that.

If you really need to check, just go offline and open wallet. 24 days is a loooong time, I know

You won't believe me guys, mine was more than that and the network really tested my patience back then.

[lombok]

The only way now is to wait for the transaction to be confirmed, it may take 1 or 2 days 😅

Or it may take longer than that.

If it is more than that, it means that the BTC network is very congested. This is very, very torturous if we really need money or Bitcoin, maybe RBF can really help overcome problems like this. Does BRC-20 exacerbate Bitcoin's current network congestion?

[tabas]

The only way now is to wait for the transaction to be confirmed, it may take 1 or 2 days 😅

Or it may take longer than that.

If it is more than that, it means that the BTC network is very congested.

Difficulty adjustment right now isn't that much so if OP can simply put his TXID here, we can see if it's already confirmed or not. And depending on the fees on how low it is because it is also changing from time to time.

This is very, very torturous if we really need money or Bitcoin, maybe RBF can really help overcome problems like this.

That's true, so plan your transactions and pay what's being required and/or use viabtc's help as long as your transaction is suiting the requirement of it for being accelerated.

Does BRC-20 exacerbate Bitcoin's current network congestion?

Yes.