Bitcoin Forum

My wallet on my mac is showing 3.95 bitcoins but if I search on block chain it shows the final balance as zero?
This is really worrying me why is this please?
https://blockchain.info/address/16s8cJjUQPkkZ5Mc1XRzpCBAL4rxRXM8Ug

It says I sent 3.9 bitcoins to this address 13ZdCdUgyC5YFWQd8WwG3eMa7L3VZqxvHK
But I didnt?!
Is something happening here please I am worried now

Did YOU do this transaction? https://blockchain.info/tx/512d25a8a3f5767a2ad3789340773e88315c54d648871ac08ef301c8c25e6a0c

What kind of wallet you are using bro?

No, it says you (or whoever) sent 1 BTC to that address. The rest (2.9995) went to 14rtrzMdMZzojwV5RZG5GaLqJTwNc5dPe5

no I did not do the 3.9 transaction!!!! wow this is crazy is there anything I can do? I am using qt wallet on my mac book pro.

yes I never sent any to that address I do not know what the address is?

Nope

well does anyone know what the hell happened then please? Was I hacked?

Probably.
You must have send your private keys to someone.

Is your Bitcoin-QT up-to-date with downloading information from the network ? In other words, Is there a green check marker (V shape) in the lower right ?

Yes? Then relax, confirm and I'll explain in the next message.

Hi actually on th raspberry pi forum I actually posted all my wifi ip addresses could this be what has happened someone hacked me?

it is not being hacked when you do not encrypt your wallet a feature built-in to most clients

next time use electrum client, 10 sec install and setup

would you leave your real wallet out on the dash of your car? no

Yes it was up to date last night when I checked it was up to date and showing I  still had 3.995 bitcoins in my wallet. I checked block chain out of curiosity and then saw this now I am panicking :(

Ok, like I said, relax! Next message ...

Shameless plug for Inputs - you can take your wallet with you.

This is what is happening:
You have a few receiving transactions in April, amongst them, one for 3.9995
Then you starting spending in May and June. I'll get to the two in July in a moment.
Look closely at your spending transactions. Do you notice that some of them go to two addresses ?
One of the two addresses is the destination address, the other is an alias for YOUR wallet !

When you spent BTC, your wallet software uses an algoritm to find an incoming transaction result that matches the amount you are spending. If it can't find one, it will use a higher amount transaction result and returns the change back to you via that alias address.
Now look at your last transaction. You spent 1 BTC, and got 2.9995 returned to your wallet !

So your main wallet address shows 0.00 BTC, but if you add up all your alias addresses amounts, you'll get to 3.9995 BTC and that's what is showing on bitcoin-qt.

So, all is good, no worries, your BTC are still yours.

If you want to know more about this, there is plenty of explanation on the net.

Ben OK phew Thank you very much!!! I was nearly having a heart attack there! Much appreciated :)