what's up with this address?

[theboarderdude]

https://blockchain.info/address/1M5Cyj5jJzDszmAs5wVvz1cXxCvGENaVrN

Appears that it's send a large portion to itself, and a much smaller portion to a random address each time. Is it a hack?

[Envrin]

It's sending change back to itself.

[bitbaby]

https://blockchain.info/address/1M5Cyj5jJzDszmAs5wVvz1cXxCvGENaVrN

Appears that it's send a large portion to itself, and a much smaller portion to a random address each time. Is it a hack?

Thats how bitcoin transactions work. The balance in an account is called "unspent output" and you always send that output as a whole, you cannot break an output into smaller pieces. So if your balance is say 0.1 BTC and you send 0.05 to someone. The whole 0.1 is "spent" and you get the 0.05 "change" sent back to you.

[shorena]

Probably someone handling some sort of payouts, probably belongs to a service of sorts. ~2000 TX in ~2 hours is a bit much for a person I think.

It started here [1] 42 blocks ago with ~78 BTC


[1] https://www.blocktrail.com/BTC/tx/4f5c4019383827467654a0ab4e692bf96de42ce319743585449f4c20fb012523

[botany]

Probably someone handling some sort of payouts, probably belongs to a service of sorts. ~2000 TX in ~2 hours is a bit much for a person I think.

It started here [1] 42 blocks ago with ~78 BTC


[1] https://www.blocktrail.com/BTC/tx/4f5c4019383827467654a0ab4e692bf96de42ce319743585449f4c20fb012523

It could have sent the amounts out in a single transaction, if the output addresses were not determined in a sequential order.
No reason to process 2000Tx in 2 hours.

[shorena]

Probably someone handling some sort of payouts, probably belongs to a service of sorts. ~2000 TX in ~2 hours is a bit much for a person I think.

It started here [1] 42 blocks ago with ~78 BTC


[1] https://www.blocktrail.com/BTC/tx/4f5c4019383827467654a0ab4e692bf96de42ce319743585449f4c20fb012523

It could have sent the amounts out in a single transaction, if the output addresses were not determined in a sequential order.
No reason to process 2000Tx in 2 hours.

Usually customers dealing with BTC expect instant payout and not 2 hours later. While it might make more sense to collect transactions from a fee point of view it might cost you in customers.

[calci]

Its just what bitbaby said. Everytime, you send money to someone, it sends to your own wallet back as well.

[Jamie_Boulder]

When I first noticed this I thought someone accidentally sent me a bunch of coins (friend was trolling me) so I defiantly don't blame you for thinking the same

[calci]

When I first noticed this I thought someone accidentally sent me a bunch of coins (friend was trolling me) so I defiantly don't blame you for thinking the same

Something similar happened to me. But that time, my multibit had 2 addresses in the same wallet for me. After I sent like 0.002 to some site, the rest of the balance got sent to the 2nd address. I was just looking at the block chain, and I was like, where did all my money go :O It doesn't show in my address.
Just later, I realized, there was a second address to which it had been sent.

[bitllionaire]

You should learn how bitcoin transactions work!

bitcoins are in someting like blocks and you have to split them to send

[elephantas1]

all addresses work the same how did you spot only one?

[cakir]

Imagine your wallet has 100$

You went to store and bought a few apples and paid 5$ for that.

Does All of your money disappears from your wallet? Or 95$ are still in your wallet?

When you answer that, you'll understand this transaction...

[John (John K.)]

Imagine your wallet has 100$

You went to store and bought a few apples and paid 5$ for that.

Does All of your money disappears from your wallet? Or 95$ are still in your wallet?

When you answer that, you'll understand this transaction...

Or like, your wallet has a $100 bill, you paid $5 for the stuff using the $100 bill, and you get change back in form of other bills to the same address. For anonymity issues, change is usually sent to a fresh address in most clients. (and thus the onlooker would not know which one was the change)

[malaimult]

Imagine your wallet has 100$

You went to store and bought a few apples and paid 5$ for that.

Does All of your money disappears from your wallet? Or 95$ are still in your wallet?

When you answer that, you'll understand this transaction...

Or like, your wallet has a $100 bill, you paid $5 for the stuff using the $100 bill, and you get change back in form of other bills to the same address. For anonymity issues, change is usually sent to a fresh address in most clients. (and thus the onlooker would not know which one was the change)

Having change sent back to the same address is more common with vanity addresses and other addresses that is associated with a charity/other influential entity (for example bitmixer signs a message confirming the terms of where they will mix coins received with their 'official' 1bitmixer.... address and have activity through the address so even if you could mine a similar address you would also need to fake the "TX traffic" in and out of the address)