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Topic: [GUIDE]Double-spending an unconfirmed transaction made with a third-party client (Read 30575 times)

newbie
Activity: 1
Merit: 0
can anybody help me ( i will pay 80$ ) i got scammed 2 hours ago by a guy but transaction is still unconfirmed.i only signed up to ask this.
hero member
Activity: 574
Merit: 503
V2h5IGFyZSB5b3UgcmVhZGluZyB0aGlzPw==
Hi for all
made a mistake sending 0,5btc with fee 255 satoshi
now i have unconfirmed tx 1b391d54470adcd282ff8fa3782d7f012f85e001de147aeac0f211bb7164dc35 from 4 january
Trying delete wallet.dat and import private key. It is not helped me. I see previous balance in bitcoin core but cant make new transaction
What can i do now?

Contact Quickseller or macbook-air to push your transaction to F2pool. You can also try submitting the transaction here, but I haven't actually see a successful attempt with that so it may or may not work.
newbie
Activity: 7
Merit: 0
Hi for all
made a mistake sending 0,5btc with fee 255 satoshi
now i have unconfirmed tx 1b391d54470adcd282ff8fa3782d7f012f85e001de147aeac0f211bb7164dc35 from 4 january
Trying delete wallet.dat and import private key. It is not helped me. I see previous balance in bitcoin core but cant make new transaction
Double spend resolve the problem...
newbie
Activity: 2
Merit: 0
need your help with 2 unconfirmed transactions.
transaction done from AIMBTC to 2 different bitcoin wallets on 22nd Nov-16. already 72hours passed, but amount not received buy receiver or reversed to my wallet.

https://chain.so/tx/BTC/20187195451dc640cf41063de8c904c4fef589009c1f8ce802c6c42594b48372

https://chain.so/tx/BTC/2f728cf4e0f1e85e18c97fd8098acda2703464ffbd479d7452ab1f7eef69c72b

please help to recover my bitcoins.
hero member
Activity: 700
Merit: 500
If You Use A Blockchain.info Wallet

Wait.
It will stop being broadcasted in 30 hours. I learned that the hard way.

I'm getting a feeling that this was changed as I'm getting a transaction of mine rebroadcasted every day for about a week...

Also sorry for the necropost...
legendary
Activity: 1176
Merit: 1280
May Bitcoin be touched by his Noodly Appendage
Which transaction was double-spent?
newbie
Activity: 34
Merit: 0
I made a double spend with the funds of an unconfirmed tx, now all my funds are stuck and blockchain.info blockr and blocktrail show different balance and differ on a 0.3 tx , my wallet is at blockchain.info, it shows a positive balance but I cant spend it, help pls my addy is 1AndReyU6rVV2bjS6a6XoVdkhFqsyycK9Z
jr. member
Activity: 266
Merit: 1
Ive mistakenly sent a bitcoin without minimum tx fee duh.....unconfirmed as youd guess.....will this eventually get there or be returned?....timeframes anyone? as above done this on blockchain!! two hours so far

thanks
full member
Activity: 218
Merit: 100
Hello, everybody,

The coins finally came thru. I really worried my ass off for nothing. I thought everyone was wrong about the "just wait" phrases. I thought this was a rare occurrence that could only happen to me, but about 50 hours later, the Coins came!!!!

Thanks a million though for everyone's help and input.

Actually, in this case it probably had nothing to do with Bitcoin directly, but rather with blockchain.info's implementation.  Blockchain.info has been having some difficulties with transactions getting "stuck" the past few weeks.  They've issued a statement about it:

https://blog.blockchain.com/2014/03/05/occasional-unconfirmed-transactions-are-being-addressed/

It appears it has been resolved, at least according to the update they published to that statement.  But the point is, this appears to have been a blockchain.info problem, not a Bitcoin issue.
newbie
Activity: 2
Merit: 0
Hello, everybody,

The coins finally came thru. I really worried my ass off for nothing. I thought everyone was wrong about the "just wait" phrases. I thought this was a rare occurrence that could only happen to me, but about 50 hours later, the Coins came!!!!

Thanks a million though for everyone's help and input.
full member
Activity: 218
Merit: 100

Is there any BTC masters out there that could help me with this for a fee?  I would very very greatly appreciate it.


If you post the transaction id, I'm sure someone will help you.  I'll check back here later today to see if you've posted it.
member
Activity: 80
Merit: 10
Lead developer
@976_BTC: We cannot help you without TXID or destination address of the transaction.
newbie
Activity: 2
Merit: 0
Hello,

This is my first post here.  Hello to everyone.

I have the same unconfirmed, zero(0) confirmations transaction I sent from my blockchain wallet.  I sent about $245 to ONE address.  I sent it 48 hours ago.  I read someone above stated that blockchain will return the coins after about 30 hours, so this is now starting to worry me bc everywhere I read it takes blockchain 30-48 hours approx. to get the coins back if a transaction stays unconfirmed.

Is there any BTC masters out there that could help me with this for a fee?  I would very very greatly appreciate it.

Details-

- I sent around $245
- I afterwards sent a couple cents to the same address that I got the unconfirmed stuck transfer, and the couple cents went thru in less then an hour
- the wallet I'm sending it to has no way for me to check if there is any pending transfers.
- I used the recommended fees setting(the middle setting)
- the network propagation is very low at 0-1%

Thanks a million in advance for any help or thoughts.
legendary
Activity: 1512
Merit: 1036
If You Use A Blockchain.info Wallet

Wait.
It will stop being broadcasted in 30 hours. I learned that the hard way.
If You Use A Blockchain.info Wallet

Don't.
It uses a non-standard Bitcoin that doesn't calculate correct minimum fees or minimum transactions amounts required by Bitcoin.
Many learned that the hard way.

As a TL;DR to my long post above: after removing a never-confirming transaction from your wallet to restore your balance, simply spend your whole wallet balance back to a new wallet address to be sure the old transaction is invalidated on the network.
legendary
Activity: 3472
Merit: 4801
well, it seems waiting really works Wink

just got all 3 tx at the same time confirmed.. crazy system, hope this works better as soon as btc is really mainstream Wink

It will work fine if users include a reasonable transaction fee.

It will also work better if miners implement "child pays for parent".  Such an enhancement would increase their profits and would solve problems like this.
hero member
Activity: 574
Merit: 500
Medical Translations for Bitcoins
well, it seems waiting really works Wink

just got all 3 tx at the same time confirmed.. crazy system, hope this works better as soon as btc is really mainstream Wink
hero member
Activity: 574
Merit: 500
Medical Translations for Bitcoins
so you are actually saying that I need to wait and do nothing, right? ;-)

then my first tx should be back in my wallet tomorrow morning... too bad the blockchain wallet does this from time to time, seems I will only use the custom tx instead of quick tx in the future (where I can adjust the fee by hand)


If You Use A Blockchain.info Wallet

Wait.
It will stop being broadcasted in 30 hours. I learned that the hard way.

Does it mean it will be reversed and back in my wallet to spend if the tx was not confirmed within 30 hours?
What would happen if I would import the blockchain wallet data into bitcoin-qt and double spend the btc to get them back?

You have to wait for it to leave te memory pool, anyway, but in ~30 hours, it will be back in a Blockchain wallet.
sr. member
Activity: 462
Merit: 250
If You Use A Blockchain.info Wallet

Wait.
It will stop being broadcasted in 30 hours. I learned that the hard way.

Does it mean it will be reversed and back in my wallet to spend if the tx was not confirmed within 30 hours?
What would happen if I would import the blockchain wallet data into bitcoin-qt and double spend the btc to get them back?

You have to wait for it to leave te memory pool, anyway, but in ~30 hours, it will be back in a Blockchain wallet.
hero member
Activity: 574
Merit: 500
Medical Translations for Bitcoins
If You Use A Blockchain.info Wallet

Wait.
It will stop being broadcasted in 30 hours. I learned that the hard way.

Does it mean it will be reversed and back in my wallet to spend if the tx was not confirmed within 30 hours?
What would happen if I would import the blockchain wallet data into bitcoin-qt and double spend the btc to get them back?
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