My balance gets sent back to me

0

I'm using the blockchain API to make a "send to many transaction". In the recipients I only put other people addresses, but somehow the API sends the remainder of my balance back to me.

For example:

https://blockchain.info/tx/b4c3203815fdf61616c0a2358fa0388e734bf53503f0a659d3c9fc7863da8adc

I had 0.01 btc in my wallet. I sent 0.0000543 BTC to two different recipients, but somehow my whole balance got spent and my 0.0097914 BTC got sent back to me. I didn't ask for this.

EDIT: It also happens on a singular transaction:

https://blockchain.info/tx/2eb4273313e27c2ede86844c58f687dc535aeaa5207e9a9c4a526a032cd5143a

I've inspected the API calls and they are correct. My address is no where to be seen in it.

Why is this happening?

joaoroque

Posted 2014-12-01T18:44:30.200

Reputation: 1

Question was closed 2014-12-07T09:44:20.973

Thank you very much. Didn't knew it was called change and so google wasn't hepling. – joaoroque – 2014-12-01T19:37:53.213

Answers

2

That's how Bitcoin works. Accounts don't really have balances, they have unspent outputs. You have to spend entire outputs, but you can return amounts to yourself to create a new "change" output that you can spend later.

David Schwartz

Posted 2014-12-01T18:44:30.200

Reputation: 46 931

Asked: 2014-12-01T18:44:30.200

Viewed: 106 times

Active: 2014-12-07T09:44:48.227