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Author Topic: Stuck with double spending. Help please  (Read 403 times)
lDEATHl
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August 14, 2017, 12:52:09 AM
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I am currently trying to double spend an unconfirmed transaction. For some reason the fee was waaaay low. I know i can wait but i would also like to try first to get the coins back sooner. Plus i'm pretty sure the knowledge would also come in handy.

Anyway here is the tutorial i am following
https://steemit.com/bitcoin/@profitgenerator/tutorial-how-to-fix-unconfirmed-transactions
and i am using electrum as wallet. If there is another wallet that is easier to double spend than electrum then please reply Smiley

Currently i am stuck in the part where i recreated the transactions. The instruction only said:

"Sign your transaction, and save it to a file, it should end with .txn extension" but in the current version of electrum the option to
view the transaction before signing/broadcasting is gone.

Would really need your help on this. Thank you.
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pooya87
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August 14, 2017, 04:43:35 AM
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first thing you need to know about RBF is that your transaction must be an RBF transaction to be able to replace it! you can not do it with a normal transaction. it is like this
- enable RBF and make the RBF tx
- if it was stuck then bump the fee
simple and easy through electrum GUI

that walkthrough is not good and i recommend not using it. because it is doing it by "manually modifying the wallet file".
that is a dangerous thing to do. you may end up breaking up something without knowing it.

also the biggest problem with this method is that when you double spend a normal (non-RBF) transaction you can not broadcast it. the nodes will reject it because it is double spend!
in other words all your hard work will be useless as soon as you connect back to internet and try to broadcast it to the electrum node.

in other words, this part:
Quote
Open the dummy wallet, and load your saved transaction from file. Then just click on the Broadcast button, and you are done!

That's it, you are done now, your previous unconfirmed transaction will be cancelled, and it will be overwritten by this new one we created, and with a proper fee, it should get confirmed in no-time!
is WRONG.

you can read the first comment at the bottom. you will receive a 258: txn-mempool-conflict error when trying to broadcast your double spent transaction.

https://steemit.com/bitcoin/@profitgenerator/tutorial-how-to-fix-unconfirmed-transactions#@vart/re-profitgenerator-tutorial-how-to-fix-unconfirmed-transactions-20170603t003450255z

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