Did someone cause me to double spend coins from my instawallet?

[cunninlogic]

What happened here?   It looks like someone spent my 2 BTC about 2.5 hours before I logged into my wallet this morning.  Instawallet showed the 2 BTC on my wallet URL and I withdrew it as planned.    Is there any way to fix this?   It looks like the thief got several other instantwallets also.


http://s7.postimg.org/j4mwuubgb/thief.png
http://blockchain.info/tx/df5ff328786156f21c3cdfb1852fefdbed9e4fd9782b6cfdd33c84bd78efd676

http://s15.postimg.org/6cteasf2j/legit_transaction.png
https://blockchain.info/tx/2fcac67699c6cc22a90c8375f73ea88d48e017ef63829ebf80c642f09c578777

[Zr40]

I think this isn't done by a thief, but just the way the Instawallet server works internally.

1DsSfUgo is the receiving address for your Instawallet account, which Instawallet uses to detect incoming Bitcoins. They are added to your account balance, but don't have to stay at the receiving address.

When you take Bitcoins out of your account, Instawallet can use any address as a source for the transaction to you. In this case, 1K9ZPPkx.

Think of it as a piggy bank. When you take coins out, you just grab the number of coins you need. You usually don't care which individual coins you take, you only care about the amount you're taking out.

[cunninlogic]

Zr40 you are right I finally got my BTC.   It took almost 12 hours to start confirming then 6 confirmations came quickly.


Any idea why this is?    My payments from other sources (bitfloor, btce for example) start confirming instantly.   I will never use instawallet again if it has routine 12 hr confirmations.

[Zr40]

Looks like the transaction didn't include a fee. I guess that's the reason why it took so long to get confirmed.