Bitcoin Forum

Hello.

I'm new to Bc currency manipulations.
 I recently sent .002 bc on an adress (for testing purpose)
From this adress feeded with 0.002 bc,  I took only .001 bc that I sent to another adress feeding an account  I own (for testing purpose again).

Surprise : I perfectly received the 0.001 bc sent on the destination adress, but I only got .0009 bc left on the original adress !!

I used Bitcoin Wallet on Android for these operations (receiving and sending)
 I first suspected a sort of hidden commission (theft ?)  by the programer but when controlling on     https://blockchain.info    the operations, I see no third account involved that could have received the "leaked" 0.0001 bc.
Il only looks as 0.002 - 0.001 = 0.0009 !!

I don't care the 0.0001 leakage of course. But as a first feeling, I have serious doubts on Bitcoin.
Is there any kind of rational explanation  (like fees commission for example) ?

If someone can explain the dumb newbee I am , thanx in advance.

You guessed correctly. The "leaked" amount is the fee for the miner who included your transaction into a block, thereby making it (almost) impossible to reverse.

There is additional information on the wiki: https://en.bitcoin.it/wiki/Transaction_fee

It's not entirely up-to-date anymore, because it says that many transactions may be processed without a fee, which is not true anymore. Most transactions require a fee these days and most wallet software handles this automatically.

Thank you very much for your quick and precise answer.

It is a tx fee being taken out.

Note : As the problem is solved, I changed the topic name consequently

People like him will come back here in 2 or 3 weeks saying: OMG! all my BTCs disappeared from Mt.gox! Someone here with same problem?

Learn to search, read and LEARN, BEFORE start a game like this.

Dont be lazy

@manobra

I honnestly did. I took time to read the mecanism and even compare e-currencies. But not enought for sure, I'm probably not a smart guy :)

Note the transactions I did were amountless, for testing purpose, in order to learn and understand before entering the game, as you advise to do.

Be nice to the newbies dude.  I'm sure you asked a lot of questions when you first jumped into Bitcoin.

Just remember this little detail :
Bitcoin was the premier currency that forces a fee out of your pocket for simply transferring money from one of your wallets to another one of yours - even if located on the very same machine.
There are ways to avoid that, but these are not easily found or don't exist in the standard wallet applications.

Your doubts are 100% valid and the tips given to you as well : you have to research every single step before executing it to avoid losing money. Losing money is by far the easiest thing on Bitcoin, so extra care is always needed to avoid that. Once you get the picture (see the "small print" so to speak), however, everything will basically work as advertised.

yes it's a fee and it's going to be 10 times smaller on the next update