[Resolved]Double spent on my address

OmegaStarScream

staff

Activity: 3500

Merit: 6152

Quote from: el kaka22 on October 04, 2015, 02:37:48 AM

Quote from: ranochigo on October 04, 2015, 02:33:51 AM

I have just spent a transaction and this occurred to me too. After sending the transaction, I saw two transaction, having the same send time, amount and address. The client got confused and deducted my balance twice. The reason being that there is a ongoing transaction malleability attack by various nodes. They change the TXID but the contents of the transaction remain the same. Blockchain.info got confused and recorded it as a double spend. Only one of the TXID will be included in the block.

Edit: Ah shorena beat me to it!

Am my signature payout affected by this? It is also a double spend. (My post: https://bitcointalksearch.org/topic/m.12596174)

If yes, then I can confirm it is scam, and I will start an accustaion.

There is no need to start scam accusation , because this is on the whole bitcoin network and not only Bit-x users are affected
read about the whole situation here to understand more : http://blog.coinkite.com/post/130318407326/ongoing-bitcoin-malleability-attack-low-s-high

shorena

copper member

Activity: 1498

Merit: 1562

No I dont escrow anymore.

Quote from: Rude Boy on October 04, 2015, 02:50:53 AM

Quote from: shorena on October 04, 2015, 02:32:42 AM

Quote from: Rude Boy on October 04, 2015, 02:28:25 AM

Hello!
Actually this is my coinbase address ► 15zLFJqBvfZ2F2hxKp1Ljx16vktUvoZpT1 and in blockchain.info it was showing that Warning! this bitcoin address contains transactions which may be double spends. You should be extremely careful when trusting any transactions to or from this address. untill yesterday i didn't saw this phrase. But i never did any double spent, unfortunately coinbase doesn't allows to and i don't know how to do too. But why should it shows the warning?
What should i do now?

My best guess is that its due to the recent malleability attack[1]. Just ask coinbase to rescan your wallet if they show a wrong balance, there is nothing else you can do at the moment. There is also nothing to worry about, all this will do is confuse people. Which is bad enough, but at least nothing is lost.

[1] https://bitcointalk.org/index.php?topic=1198032.0;topicseen

I found the unconfirmed double spent tx. Someone had sent me 0.001 i don't even recognize, where it came from. Here ► https://live.blockcypher.com/btc/tx/e6421589014afba2ad9c30910587407f5d420d4cea950cda6317d1d85bda36aa/
https://blockchain.info/tx/e6421589014afba2ad9c30910587407f5d420d4cea950cda6317d1d85bda36aa

Any way to reject this payment?

It will be removed from the pool of known transactions over time, miners will refuse to mine one twin because the other twin TX is confirmed.

Rude Boy

hero member

Activity: 770

Merit: 500

Quote from: shorena on October 04, 2015, 02:32:42 AM

Quote from: Rude Boy on October 04, 2015, 02:28:25 AM

Hello!
Actually this is my coinbase address ► 15zLFJqBvfZ2F2hxKp1Ljx16vktUvoZpT1 and in blockchain.info it was showing that Warning! this bitcoin address contains transactions which may be double spends. You should be extremely careful when trusting any transactions to or from this address. untill yesterday i didn't saw this phrase. But i never did any double spent, unfortunately coinbase doesn't allows to and i don't know how to do too. But why should it shows the warning?
What should i do now?

My best guess is that its due to the recent malleability attack[1]. Just ask coinbase to rescan your wallet if they show a wrong balance, there is nothing else you can do at the moment. There is also nothing to worry about, all this will do is confuse people. Which is bad enough, but at least nothing is lost.

[1] https://bitcointalk.org/index.php?topic=1198032.0;topicseen

I found the unconfirmed double spent tx. Someone had sent me 0.001 i don't even recognize, where it came from. Here ► https://live.blockcypher.com/btc/tx/e6421589014afba2ad9c30910587407f5d420d4cea950cda6317d1d85bda36aa/
https://blockchain.info/tx/e6421589014afba2ad9c30910587407f5d420d4cea950cda6317d1d85bda36aa

Any way to reject this payment?

shorena

copper member

Activity: 1498

Merit: 1562

No I dont escrow anymore.

Quote from: el kaka22 on October 04, 2015, 02:37:48 AM

Quote from: ranochigo on October 04, 2015, 02:33:51 AM

I have just spent a transaction and this occurred to me too. After sending the transaction, I saw two transaction, having the same send time, amount and address. The client got confused and deducted my balance twice. The reason being that there is a ongoing transaction malleability attack by various nodes. They change the TXID but the contents of the transaction remain the same. Blockchain.info got confused and recorded it as a double spend. Only one of the TXID will be included in the block.

Edit: Ah shorena beat me to it!

Am my signature payout affected by this? It is also a double spend. (My post: https://bitcointalksearch.org/topic/m.12596174)

If yes, then I can confirm it is scam, and I will start an accustaion.

I would assume that all "double spends" where the same inputs are used and same outputs are generated are because of said attack. That does not make bit-x a scam service though. They might not know about this and if you check the thread I linked above it is known how is behind the attack. This is a big problem for any service that uses unconfirmed inputs.

el kaka22

legendary

Activity: 3752

Merit: 1170

www.Crypto.Games: Multiple coins, multiple games

Quote from: ranochigo on October 04, 2015, 02:33:51 AM

I have just spent a transaction and this occurred to me too. After sending the transaction, I saw two transaction, having the same send time, amount and address. The client got confused and deducted my balance twice. The reason being that there is a ongoing transaction malleability attack by various nodes. They change the TXID but the contents of the transaction remain the same. Blockchain.info got confused and recorded it as a double spend. Only one of the TXID will be included in the block.

Edit: Ah shorena beat me to it!

Am my signature payout affected by this? It is also a double spend. (My post: https://bitcointalksearch.org/topic/m.12596174)

If yes, then I can confirm it is scam, and I will start an accustaion.

ranochigo

legendary

Activity: 3038

Merit: 4418

Crypto Swap Exchange

I have just spent a transaction and this occurred to me too. After sending the transaction, I saw two transaction, having the same send time, amount and address. The client got confused and deducted my balance twice. The reason being that there is a ongoing transaction malleability attack by various nodes. They change the TXID but the contents of the transaction remain the same. Blockchain.info got confused and recorded it as a double spend. Only one of the TXID will be included in the block.

Edit: Ah shorena beat me to it!

shorena

copper member

Activity: 1498

Merit: 1562

No I dont escrow anymore.

Quote from: Rude Boy on October 04, 2015, 02:28:25 AM

Hello!
Actually this is my coinbase address ► 15zLFJqBvfZ2F2hxKp1Ljx16vktUvoZpT1 and in blockchain.info it was showing that Warning! this bitcoin address contains transactions which may be double spends. You should be extremely careful when trusting any transactions to or from this address. untill yesterday i didn't saw this phrase. But i never did any double spent, unfortunately coinbase doesn't allows to and i don't know how to do too. But why should it shows the warning?
What should i do now?

My best guess is that its due to the recent malleability attack[1]. Just ask coinbase to rescan your wallet if they show a wrong balance, there is nothing else you can do at the moment. There is also nothing to worry about, all this will do is confuse people. Which is bad enough, but at least nothing is lost.

[1] https://bitcointalk.org/index.php?topic=1198032.0;topicseen

Rude Boy

hero member

Activity: 770

Merit: 500

Hello!
Actually this is my coinbase address ► 15zLFJqBvfZ2F2hxKp1Ljx16vktUvoZpT1 and in blockchain.info it was showing that Warning! this bitcoin address contains transactions which may be double spends. You should be extremely careful when trusting any transactions to or from this address. untill yesterday i didn't saw this phrase. But i never did any double spent, unfortunately coinbase doesn't allows to and i don't know how to do too. But why should it shows the warning?
What should i do now?

Topic: [Resolved]Double spent on my address (Read 952 times)