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I have the following transaction on the testnet:

dc5b627a93ffaca1fe02a4352406c218be17fc3e6d47cfefe7e3890037b689ad

It shows like this:

enter image description here

Notice that the amount is 1993.07(..) TBTC

With BitcoinD, I received the following:

Status: 90 confirmations
Date: 12/13/2017 15:56
From: unknown
To: mz7XHbwYAnfZhmMqSsgDDPpFmSuxV2i6UF (own address, label: 5f40098e-0e0d-b642-62a2-cc966775ce7f)
Credit: 0.00859375 BTC
Net amount: +0.00859375 BTC
Transaction ID: dc5b627a93ffaca1fe02a4352406c218be17fc3e6d47cfefe7e3890037b689ad
Transaction total size: 249 bytes
Output index: 0

But the amount is: 0.00859375 TBTC

Why is this?

Thomas
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1 Answers1

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What you have is something called a change address. Your client used an unspent output of 1993.07508548 BTC and split it into two outputs (1993.06549173 BTC & 0.00859375 BTC). The larger output is considered change back to the sender. I would imagine the 0.008 BTC output is yours as that is the output displayed on your client.

If for some reason you wish to spend this 0.008 BTC and the amount you wish to send is 0.004 BTC, the output of this transaction will act as the unspent output of the new transaction you wish to make. The total transacted will be 0.008 BTC even though your only sending 0.004 BTC.

Here is some documentation on unspent outputs

Monstrum
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