Topic: How to Cancel Mycelium Transaction (Read 216 times)

   Mycelium does not allow replace -by-fee because its extremely important and necessary as the only way to stop a transaction, you will have to return your seed to Electrum and transactions can never be cancelled instead ask your wallet to stop rebroadcast and have hope that enough nodes are dropped because once any transaction in crypto is confirmed is permanent, they cannot be tempered with since it has been written in blockchain also the sender and receiver even other platforms involved .

   To cancel click on the awaiting transaction and look for nonce on the screen and record the number in it and start a new transaction.

Mycelium has a feature to remove local transactions
but their node (server) seem to keep every transaction in their mempool, even 1sat/vB ones.

You can cross your fingers and do this:
Update your Mycelium wallet to the latest version, Open it and go to 'Accounts' tab and select the account that has your transaction.
Go to 'Transactions' tab, find the unconfirmed transaction, tap on it to highlight then press menu (...) and select "Delete Unconfirmed Transaction".
If it didn't reappear after the next rescan, then it's now dropped from their mempool and you can now spend its inputs to a new transaction, but I highly doubt it wont.

Make sure to utilize its "coin control" feature to be able to select the specific UTXO that your low-fee txn is trying to spend.
If Electrum auto-selected your other unspent outputs, the new transaction will not be a replacement to the removed transaction.
Here's how to coin control in Electrum: bitcoinelectrum.com/how-to-spend-specific-utxos-in-electrum

The first option is what he should do to be able not to spend too much on fee. The transaction would have dropped from most nodes mempool and this will make it easy to use wallet like Electrum to spend the coin again as it will become a local transaction. No need to use any paid accelerator as they charge high amount in fee to pay them.

You can only do two things here:

1. Follow hosseinimr93's advice; or
2. You pay acceleration service to mining pool.

With the current discussion that talk about ETF, I don't think we will see mempool went empty very soon.

Thank you all for your advice...

I will try to set up electrum with my seed phrase and hope it works.

I do not control the wallet I'm sending to. It is to a private company.

It is not possible to cancel the transaction as mycelium doesn't support rbf and also canceling transactions because it is call double spending as explained in other posts. If only the transaction could be dropped like what I experienced before when I am using Trustwallet before because of having very low fee that lets me do the transaction again with higher fee. I can't explain it but that's what happened to my transaction before. If you have more btc then why don't you try using CPFP if you have full control of the address.

If a node displays your transaction status as unconfirmed, it means that the node has your transaction in its mempool.

Whenever you use electrum, you connect to server a to get data from. Each server runs a node and each node has its own mempool and can have its own setting.

If the server you are connected to has the transaction in its mempool, it would display your transaction status as unconfirmed.
If the server you are connected to doesn't have your transaction in its mempool, that doesn't have any information about your transaction and wouldn't display that at all.

Take note that with changing the server, you don't change anything with the transaction and you only decide to get data from a different node.

With or without broadcasted transaction, your SPV wallet will synchronize with the blockchain with the help of the servers. If you want, with or without broadcasted transaction that is not yet confirmed, you can change the server from automatic to manual and connect from one server to another if you want.

On Electrum, at the top right corner on mobile or at the lower right corner on desktop, you will a see green or blue circle. Click on the circle and uncheck 'select server automatically'. On mobile, click on the green or blue circle -> network -> server settings. Below you will see lists of servers that you can select anyone of your choice manually. After, let your wallet synchronize with the blockchain again.

There are different servers and each have its own mempool. Some servers may still have an unconfirmed transaction in their mempool while some may not have the unconfirmed transaction anymore as they have dropped the transaction from their mempool. If you are connecting from one server to another one by one, you may be able to see if your transaction as been dropped from one of these servers so you will be able to rebroadcast the coin again in another transaction.

If the purging has not increased above the fee you used for your transaction, it may take 14 days before your unconfirmed transaction could have been dropped from most nodes/servers mempool as it is the default, but some nodes/servers runners can edit it and make the days longer and still have the unconfirmed transaction in their mempool, but most nodes would have dropped it from their mempool and you will be able to broadcast the coin again in another transaction.

Does pending really translates to unconfirmed?
Because usually, we get the unconfirmed for even a paid transaction until it’s been dropped but then, OP used a way too low fee even though the transaction was initiated for over a month now.

Something I want go understand though, can OP really change the server on an already initiated and unconfirmed transaction?
I have never tried but, it’s something that would be worth trying if it could be the case as, at times I just have to wait out the server to drop the transaction but, bumping has been a way out for me though.

I wouldn't recommend waiting at all in this case, because the OP paid a very small fee compared to what is currently required to get a confirmation, and somehow it doesn't seem to me that we will see the fees to drop less than 10 sat/vB. Currently we have about 250 000 transactions that are in the range of 1-30 sat/vB that require more than 500 blocks to be confirmed.

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I would only add that the OP and everyone else who enters their seed in other wallets should be careful to download a legitimate wallet, and not some malicious version that will empty their wallet. Fake Electrum is very common because that wallet is very popular and free, so I would advise everyone to be careful what they do.

[GUIDE] How to Safely Download and Verify Electrum [Guide]

To add to Charles-Tim's post:

Whether the unconfirmed transaction is shown in electrum or not depends on which electrum server you are connected to. There are nodes that still have the transaction in their mempool and it's possible that electrum show the unconfirmed transaction.

If the unconfirmed transaction is not displayed in electrum, you can easily make a new transaction.
If the unconfirmed transaction is displayed in electrum, you should try connecting to different servers, until you find a one that doesn't have your transaction in its mempool. After that you will be able to remove the transaction from the wallet locally and make a new transaction.

The fee that you used is 8.655 sat/vbyte, but the purging is around 22.1 sat/vbyte. Most nodes have dropped your transaction. Import your seed phrase on a wallet like Electrum and you should be able to rebroadcast the coin in a new transaction again.

I suggest you wait till your transaction is complete. Once the transaction is pending if the transaction is pending and after the pending for a long time if you feel like canceling and doing the transaction again then you will be charged double to triple the transaction fee. Firstly when you transfer in the first step you have to pay the prescribed amount of transaction fee then when you cancel you have to pay the transaction fee and in the third step when you do the transaction again you have to pay the transaction fee. So it would be better for you to wait without paying additional transaction fees in three steps. It might take a few days but you won't incur so much transaction fees.

This transaction has a very low fee of 8.68 sat/vB according to mempool.space.

Mycelium does not have the option to bump a transaction if it came from your Mycelium wallet because it does not have an RBF function.

The bump option in Mycelium will only pop up when you receive an unconfirmed transaction, you can see the bump fee as CPFP.

Would you mind telling us what wallet you send BTC to?
If you have full control of that receiving address you can maybe able to make CPFP.

The post above might also work if you import the seed backup to Electrum you might be able to spend it again if the server/node you connected already dropped this transaction.

Canceling a bitcoin transactions is just like double spending it or say bumping it with RBF but to the same address it is coming from. I don’t think Mycelium allows you to do that. Your best shot is to wait to have it dropped which is definitely not happening at moment probably because the wallet it’s self is rebroadcasting the transaction or nodes haven’t dropped it.

What you should do is to import that seed phrase into electrum wallet and then you start switching severs as my believe is that some nodes must have dropped it due to that very low fee. So you switch servers until you see the transaction as ‘local’ which means that node doesn’t have it and then you right click on it to delete it and then broadcast a new transaction spending those coins with a higher fee.

I am looking to cancel my Mycelium transaction that has been unconfirmed for over a month. I did not have a large enough fee and Mycelium does not have RBF to increase the fee. It is "pending" on blockchaincom. Please help me hash is 72237bfb5debec1f4682b48ab1b72a31d7138840d521729bc575fa081ef1a797