Weird transaction...

[plexasm]

I just sent .9 BTC to an address, and 2.5 BTC was removed from my wallet, and 1.6 was sent back to me.

Is this normal? Never saw that before.

txn: https://blockchain.info/tx-index/1d061a904ee350e5bfecb3db3567382bb5f193dac4ed58ecf605421b8af1b4ec

[DannyHamilton]

I just sent .9 BTC to an address, and 2.5 BTC was removed from my wallet, and 1.6 was sent back to me.

Is this normal?

Yep.  That's exactly how bitcoin works.

Never saw that before.

Then you've never paid any attention to any other transactions that you've sent, or you've always sent your entire balance.

[JPage]

I just sent .9 BTC to an address, and 2.5 BTC was removed from my wallet, and 1.6 was sent back to me.

Is this normal? Never saw that before.

txn: https://blockchain.info/tx-index/1d061a904ee350e5bfecb3db3567382bb5f193dac4ed58ecf605421b8af1b4ec

Yeah.  It's called 'change'.  You could just forgo that and give it up as miner fees.  But other than that there is really no place else to send it.  Might as well just receive it back to yourself.  Seems like a good scheme to me. 

[drwtsn32]

I was too dumb I noticed that just now.
I thought this mechanism only happens if you use a third-party online wallet.

[Cryptonitex]

I was too dumb I noticed that just now.
I thought this mechanism only happens if you use a third-party online wallet.

I've used CoinBase many times, and I've never seen that.

[bitkilo]

Nothing weird with that transaction mate, as others have said just change coming back to a address of yours.

If you have not noticed this in the past then you may have had the exact amount in input that you last sent.
ie. If you had .9btc in one single address input then it would have spent that input and because its the same amount as you want to send then you would not see any change being returned.

[daobadico]

First to hear that, but I know there is "change address" designed in bitcoin, maybe due to it??   

[bitkilo]

First to hear that, but I know there is "change address" designed in bitcoin, maybe due to it??   

Lets say you buy 1btc and want to send 0.5btc to a friend, that 1btc you have is kind of like having a 1btc note and since you only want to give your friend half and you cant really just give him half the note by cutting down the middle, then your only option left is to give him the whole note and he gives you the change back.
Bitcoin work a little more complex than that of course but that is a basic answer to why change addressee are needed .

I suggest you read the bitcoin white paper and also check out bitcoin wiki for a little more info on what bitcoin is and how it is different from money as you know it.

[~Bitcoin~]

I was too dumb I noticed that just now.
I thought this mechanism only happens if you use a third-party online wallet.

I've used CoinBase many times, and I've never seen that.

Coinbase to coinbase address transaction may not look like this because they are only internal address so that they can work without fee. However in case of real external bitcoin address to bitcoin address transaction this is normal.

[virusasog]

I was too dumb I noticed that just now.
I thought this mechanism only happens if you use a third-party online wallet.

I've used CoinBase many times, and I've never seen that.

Coinbase to coinbase address transaction may not look like this because they are only internal address so that they can work without fee. However in case of real external bitcoin address to bitcoin address transaction this is normal.

Hey bro If we send bitcoins without fees It will hours of time to complete the transaction and then I can't understand that op quote because He stated that he sent 0.9 btc only then he can get 1.6 btc and fee as 2.5 btc

[Coding Enthusiast]

I just sent .9 BTC to an address, and 2.5 BTC was removed from my wallet, and 1.6 was sent back to me.
Is this normal? Never saw that before.
txn: https://blockchain.info/tx-index/1d061a904ee350e5bfecb3db3567382bb5f193dac4ed58ecf605421b8af1b4ec

let me try and explain it as well as i can:

the thing you need to know about bitcoin is that bitcoin doesn't exist what exist are bitcoin addresses and record of transaction in and out (input and output) in bitcoin addresses aka public keys.

so here, what you own is This a record of your public key (bitcoin address) receiving 2.4996BTC so in order to send 0.9BTC you have to create a transaction and first announce to the network you own this and you want to transfer it or a part of it to another public key (hence output) by signing it with your private key.