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Topic: possible to undo transaction without confirmations? (Read 833 times)

legendary
Activity: 1890
Merit: 1078
Ian Knowles - CIYAM Lead Developer
Unfortunately as of now there is not much you can do (apart from attempt a double-spend which I have found from personal experience is *extremely* difficult to do).

You'll probably find that in a day it will have been processed and until there is a way to *add a fee* to an existing tx the lesson is to *include* a fee if you want your tx to be mined in a reasonable amount of time.
legendary
Activity: 2506
Merit: 1010
is it possible to undo a transaction as long as it does not have any confirmations?
if yes, how?

You can't "undo" but you can create a competing transaction and try to get that mined first.

Most nodes will not relay a double spend so you'ld need to somehow get the transaction sent directly to a miner who would include that double spend instead of the original transaction.

But even then it becomes a race.  If the transaction has a good chance of being mined in the next couple of blocks your miner partner would need tens of TH/s of mining capacity to have a 50% chance or more of being able to mine the double spend.  That gets very expensive to do.  :-)
legendary
Activity: 1148
Merit: 1008
If you want to walk on water, get out of the boat
Usually an unconfirmed transaction for more than a day disappear from the memory pool of the clients, but there is nothing you can do about that, just wait.
sr. member
Activity: 351
Merit: 250
hello,
is it possible to undo a transaction as long as it does not have any confirmations?
if yes, how?
thanks!
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