Bitcoin Forum

hi dear friends ..
i was searching for amazon gift cards and i found someone selling with discount 40%, i accept his deal and i sent to him 250 USD by blockchain.info and the default fee was 0.17 i think and he scamed me and didnt want to reply me or give me anything he told me i must wait to confirmation i told him its ok, but for my lucky the confirm is take lot times and he didnt received anything till now cuz its 0/3 confirm, and i talk with him in ICQ but he didnt answer me so i created skype and added him there i find him answer me :( and when i told him i dont have money he blocked me ..
so please help me to cancel this transaction for god name :( i dont have money really ...

this is transaction :
https://blockchain.info/tx/3451c43b1f8d2c5fcbefebd101e200525c6e4b93bea5041785b70a2bba97f24f

and here some pictures from our conversation :
https://ibb.co/e6RAVa

Bitcoin transactions are irreversible. You cannot "cancel" a transaction. The best you can do is to create a double spending transaction which invalidates the original if it confirms. However that entirely depends on the double spending transaction confirming instead of the original transaction.

Since your transaction is currently unconfirmed, you can attempt to make a double spending transaction, but this may be very difficult for you as you are using blockchain.info. You will somehow have to get the private keys off for your addresses off of blockchain.info and use another wallet in order to create, sign, and send the transaction.

yeah i reading about double spending and really i dont know how its working :( do u know i really dont need the money but i dont need him take it really cuz he is lair and thief and dont thinking about people he scamed

I can create a double spending transaction for you, but you would have to sign it. However, because blockchain.info no longer supports exporting private keys and does not allow signing of raw transactions, this process will be extremely difficult as it requires using the wallet seed in another wallet and hoping that it derives the same addresses as blockchain.info.

thank you brother for ur help, tell me what i should do and i will do it now

Follow these instructions very carefully. I am going to give you specific instructions for using Electrum to import the private keys from blockchain.info to Electrum and then have you sign a transaction to broadcast it.

First, go to your bc.i wallet and go to Settings > Security. Then click on the "Backup Phrase" button. This will have you go through a process to get your twelve word seed phrase. Copy those 12 words somewhere safe.

Then go to https://electrum.org/#download and download and install Electrum. Once it is installed, when you first run it, it should have a dialog for creating a new wallet. Choose the "Standard wallet" option and click Next. Choose the "I already have a seed" option and click Next. In the box, enter your 12 word seed phrase. Click the "Options" button and check the box for "BIP 39 Seed". Click Next and set a password. Then click Next. You should now have an Electrum wallet which should exactly mirror your blockchain.info wallet. You should see any confirmed transactions in the History tab. To double check this is your wallet, click on Wallet > Addresses. You should get a list of addresses. Double check that they match the ones in your blockchain.info wallet (you will probably get more addresses than you have in your bc.i wallet).

If that is all correct, then now you can create a double spending transaction. Your unconfirmed transaction shouldn't appear in the history list, and if it doesn't, then you can use the send tab to send your Bitcoin to an another address in your wallet. Once the transaction is signed and broadcast, the broadcast may actually fail. In the dialog where you see the transaction details before broadcast, click the "Copy" button and then paste that into a post here. That will post your raw signed transaction for others to broadcast for you should Electrum fail to do so (because its a double spend).

If it does appear in the history list, report back here.

By the way you need to do this quick because your fee of ~60 Sats/byte means it will confirm sometime in the next 12 hours or so.

Unfortunately, it looks like the transaction already have 5 confirmations now so it is too late now. Hopefully, you are able to recover your funds via some means.

If the person is from bitcointalk post the details on the scam acc boards https://bitcointalk.org/index.php?board=83.0

Too bad you got scammed, but once a transaction is sent it is too late my friend.