Can a transaction be cancelled

[codehtcmail]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

[1715109485]

1715109485

[merelcoin]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

If i'm not mistaking, you can create a new output, using the same inputs as you used for the transaction to be cancelled. Make sure you have a higher fee for the new transaction...

I've never tried this myself, but i picked it up somewhere on this forum... Might be mistaking tough.

[kwaasteniet]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

No, cancelling a transaction is before an after confirmation not possible. In theorie it can be done but you must have control over 51% of the bitcoin network.
Before confirmation you can double spend the bitcoins but that's different than cancelling.

[merelcoin]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

No, cancelling a transaction is before an after confirmation not possible. In theorie it can be done but you must have control over 51% of the bitcoin network.
Before confirmation you can double spend the bitcoins but that's different than cancelling.

Eventough doublespending isn't the same as cancelling, it does have the same effect more or less... At least, if the output from the double spend coins goes to your own address...
Offcourse you'll create a new transaction, and you lose the fee, which wouldn't happen if you could "cancel" a transaction.

[aleandromagno]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

If i'm not mistaking, you can create a new output, using the same inputs as you used for the transaction to be cancelled. Make sure you have a higher fee for the new transaction...

I've never tried this myself, but i picked it up somewhere on this forum... Might be mistaking tough.

When transaction "hanging" in network some wallets have option to fill up transaction fee - so we can say in other words that cancel present transaction and send one more with different fee, but it is the same transaction just fee is different.

Cancelling transaction is not possible.

[Amph]

it can only be rejected by the network, if for example it remian in the limbo for a certain time frame because you did not pay any fee or something like this

[BitcoinHodler]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

If i'm not mistaking, you can create a new output, using the same inputs as you used for the transaction to be cancelled. Make sure you have a higher fee for the new transaction...

I've never tried this myself, but i picked it up somewhere on this forum... Might be mistaking tough.

When transaction "hanging" in network some wallets have option to fill up transaction fee - so we can say in other words that cancel present transaction and send one more with different fee, but it is the same transaction just fee is different.

Cancelling transaction is not possible.

@merelcoin you are right, you can create a new transaction with the same inputs and change some small stuff like fee for example and broadcast the new tx as a double spend.

@aleandromagno, can you explain more about this, which wallet has this feature? is it in console with typing in code or is it like in the interface something called double spend with extra fees?

[pjsonowal]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

Well the same question was raised many tumes and only thing is that it can be cancelled by bitcoin network which will only happen when a double spend is detected.But it is not easy to execute  a double spend as most of the the wallets now doesn't allows that.You need to have knowledge to script some parts of bitcoin wallet.

[codehtcmail]

Thank you all, I was worried if someone pays me in Bitcoin and I send them the goods before the first confirmation, just by seeing the transaction on the blockchain, he might cancel it before the first confirmation.
Thanks

[LuanX3]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

it's impossible, but if the transaction won't be confirmed within 24-48 hours, it's cancelled

[n0ne]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

it's impossible, but if the transaction won't be confirmed within 24-48 hours, it's cancelled

Agreed, it is not possible to cancel the ongoing transaction manually, but auto cancellation takes place as suggested by above guy only in very rare in which confirmation gets much delayed.

[traderbit]

Thank you all, I was worried if someone pays me in Bitcoin and I send them the goods before the first confirmation, just by seeing the transaction on the blockchain, he might cancel it before the first confirmation.
Thanks

When you deal with a person It is recommended to send/deliver the goods after the first confirmation, for example the poloniex exchange shows the deposit bitcoin only after first confirmation.

[TheDiligentHorse]

Highly doubt it, that's why BTC is so popular amongst the dark web

[shorena]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

If i'm not mistaking, you can create a new output, using the same inputs as you used for the transaction to be cancelled. Make sure you have a higher fee for the new transaction...

I've never tried this myself, but i picked it up somewhere on this forum... Might be mistaking tough.

When transaction "hanging" in network some wallets have option to fill up transaction fee - so we can say in other words that cancel present transaction and send one more with different fee, but it is the same transaction just fee is different.

Cancelling transaction is not possible.

@merelcoin you are right, you can create a new transaction with the same inputs and change some small stuff like fee for example and broadcast the new tx as a double spend.

@aleandromagno, can you explain more about this, which wallet has this feature? is it in console with typing in code or is it like in the interface something called double spend with extra fees?

AFAIK they are refering to "replace by fee" (RBF), which is possible with bitcoin core if the first TX allows it and its not actually available via the GUI. Its more a "its possible" thing. I dont know of any wallet that actually implements RBF all the way to the GUI.

[Barcode_]

Once the transaction is broadcast to blockchain, there is no way to cancel the transaction.

[aleandromagno]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

If i'm not mistaking, you can create a new output, using the same inputs as you used for the transaction to be cancelled. Make sure you have a higher fee for the new transaction...

I've never tried this myself, but i picked it up somewhere on this forum... Might be mistaking tough.

When transaction "hanging" in network some wallets have option to fill up transaction fee - so we can say in other words that cancel present transaction and send one more with different fee, but it is the same transaction just fee is different.

Cancelling transaction is not possible.

@merelcoin you are right, you can create a new transaction with the same inputs and change some small stuff like fee for example and broadcast the new tx as a double spend.

@aleandromagno, can you explain more about this, which wallet has this feature? is it in console with typing in code or is it like in the interface something called double spend with extra fees?

AFAIK they are refering to "replace by fee" (RBF), which is possible with bitcoin core if the first TX allows it and its not actually available via the GUI. Its more a "its possible" thing. I dont know of any wallet that actually implements RBF all the way to the GUI.

To be honest i never did that, but i read somewhere (probably here on bitcointalk) that this is possible in Electrum wallet.

I will try to find that thread..

Edit: I cant find this thread, but someone asked in behalf of his friend who sent transaction (probably) from blockchain wallet without fee, and transaction of course was hanging.. Someone give him advice to export keys to Electrum wallet because (as he said) there is option to fill/change transaction fee..
I don't remember whether it worked or not.

[Velkro]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

I red long time ago, that it can be done. I mean, you have really small window to do it. For sure you must do it before first confirmation, not sure if not even faster.
You then create new output somehow, there was webpage for that in past. My memory is failing me a little bit.

[MIKEY345]

Only if you quickly double spend it, but its almost impossible to do it only if you are technologically expert.You need to be careful next time where you send.

[btccashacc]

Hello, can a BTC transaction be cancelled before it has been confirmed, or is it that once broadcast it is not possible to cancel at any time ?

I red long time ago, that it can be done. I mean, you have really small window to do it. For sure you must do it before first confirmation, not sure if not even faster.
You then create new output somehow, there was webpage for that in past. My memory is failing me a little bit.

i accidentally cancelled the transaction, i had lost connection when i transfered some bitcoin to my friend, thus in my exprienced you could cancell it when the transaction is processing but when bitcoin has transfered and still confirmed i must say that it's imposible to cancelled it or dispute due to it's irreversible nature, why some people choose bitcoin for transaction than other payment method of course because these reasons

[Berthorl]

Last time I checked, theres no such thing as reversal.

The only thing you can do is hope to contact the address owner, and re-send it back?