<p>There has been some malleability attacks recently - third party duplicating the transactions.</p>

<p>See <a href="https://en.bitcoin.it/wiki/Transaction_Malleability" rel="nofollow">https://en.bitcoin.it/wiki/Transaction_Malleability</a> for details on the attack technique.</p>

<p>The attack is merely an annoyance as far as I've understood, and there is a BIP in the making (BIP 62) to deal with this attack vector.</p>

<p>Perhaps this explains your problems.</p>

CC BY-SA 3.0
2015-10-09T22:03:19.187Z
2015-10-09T22:27:21.217Z
2015-10-09T22:27:21.217Z
tobixen
<p>SO i received this transaction from my other wallet
1)  <a href="https://blockchain.info/tx/06810d392213a7453bbe6ad4ab95c0892875b0db2b56b3db5ef942b0a42eced4" rel="nofollow">https://blockchain.info/tx/06810d392213a7453bbe6ad4ab95c0892875b0db2b56b3db5ef942b0a42eced4</a>
for 1.02BTC</p>

<p>and sent these for 1btc and 0.2btc while the previous transaction was unconfirmed:
2)  <a href="https://blockchain.info/tx/44f68a0987fe9dfe88045c977c5d66534a65ca399f0d2b27fec7c80785ddc759" rel="nofollow">https://blockchain.info/tx/44f68a0987fe9dfe88045c977c5d66534a65ca399f0d2b27fec7c80785ddc759</a>
3)  0.2 (similar to 2) )</p>

<p>Now suddenly from my other wallet automatically
 4)  a new transaction for the same value but different hash</p>

<p>and the transaction number 1) shows
 A conflicting transaction has been detected in our memory pool. The transaction hash displayed below may change.</p>

<p>Can you tell me when 1) will be confirmed, and are 2) and 3) dependent on 1).
How long until the transcation is unconfirmed that the bitcoin is refunded.
I have paid the fees for all transcations.
Pls help! </p>

CC BY-SA 3.0
2015-10-10T04:55:03.363Z
sounds like some sort of transaction malleability attack
Jimmy Song
<transactions><blockchain><unconfirmed-transactions>
A conflicting transaction has been detected in our memory pool. The transaction hash displayed below may change
Pavneet Singh
# A conflicting transaction has been detected in our memory pool. The transaction hash displayed below may change

(Asked by: username_0 on 2015-10-09)

SO i received this transaction from my other wallet
1) <https://blockchain.info/tx/06810d392213a7453bbe6ad4ab95c0892875b0db2b56b3db5ef942b0a42eced4>
for 1.02BTC

and sent these for 1btc and 0.2btc while the previous transaction was unconfirmed:
2) <https://blockchain.info/tx/44f68a0987fe9dfe88045c977c5d66534a65ca399f0d2b27fec7c80785ddc759>
3) 0.2 (similar to 2) )

Now suddenly from my other wallet automatically
4) a new transaction for the same value but different hash

and the transaction number 1) shows
A conflicting transaction has been detected in our memory pool. The transaction hash displayed below may change.

Can you tell me when 1) will be confirmed, and are 2) and 3) dependent on 1).
How long until the transcation is unconfirmed that the bitcoin is refunded.
I have paid the fees for all transcations.
Pls help!

**Tags:** transactions, blockchain, unconfirmed-transactions

> **Comments:**
> **username_1**: sounds like some sort of transaction malleability attack  

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## 1 answers

### Answer by username_2 on 2015-10-09. Score: 2

There has been some malleability attacks recently - third party duplicating the transactions.

See <https://en.bitcoin.it/wiki/Transaction_Malleability> for details on the attack technique.

The attack is merely an annoyance as far as I've understood, and there is a BIP in the making (BIP 62) to deal with this attack vector.

Perhaps this explains your problems.


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