Bitcoin Forum

All,

Wondering if this community can help.  Someone sent me BTC to my Coinbase account using the input address (send from address) instead of the receive address.  I've contacted Coinbase tech support with no success.  I even blasted them on Twitter, to deaf ears. Any advise is appreciated.

I don't get what the problem is.

If you've used an """input""" adress, ( as you call it.. ) -- so in other words an adress you have previously send a transaction with, ( how could you otherwise make an output from it, "send" anything from it) --, it should be a receiving adress at the same time, right? These stay valid no matter what.

https://support.coinbase.com/customer/en/portal/articles/2276500-why-did-my-wallet-address-change- < Not the problem you currently have, but it does state that every receiving adress will stay valid.

I don't think they have a system like poloniex, where they batch withdrawal transactions etcetera.

Based on other threads, I think Coinbase uses their own (consolidated) addresses for withdrawals. That means Coinbase itself now owns the coins (instead of using someone else's deposit address). If I am right on this, they should be able to fix it for you. One way or another, you'll need their cooperation. I suggest you read this thread (https://bitcointalk.org/index.php?topic=2682502.0;all), then send them a message similar to this example (https://bitcointalk.org/index.php?topic=2682502.msg27649352#msg27649352).

Your reasoning works for a wallet, not for an exchange.
Say Alice deposits 1 Bitcoin to Coinbase, and sells it for dollars. Bob sends dollars to Coinbase, buys 1 Bitcoin, and sends that Bitcoin to Charlie. That 1 Bitcoin comes from someone else's "input".
Now, if Charlie decides to send 1 Bitcoin back to that "send from address", it won't end up in Bob's Coinbase account.

I agree with you that Coinbase Has the BTC and owes me.  With that said, below is my message to Coinbase with tx history. 

"Thanks you for your email. The Coinbase support link do not help with my unique situation.  I've provided all the information that I have a my disposal.  My recommendation is for you to follow the transaction.  In short, I sent two bitcoin to an address from Coinbase on Nov 2016.  The person  returned the two bitcoin to me on Nov 2017 using the same sent address (aka hot address) from Coinbase.  I have yet to resolve this issue.  The links below are the two transactions for your reference".

https://www.coinbase.com/accounts/f1e08e66-6f38-5719-8939-452950f1029d/transactions/ab836c3c-c6af-5179-8bf6-75fe8c6eac70


https://blockchain.info/tx/db3d3d44226fb444ee6bb9a66cbd0a46e84cd5b5962bde78a97ba88cc46aee48


The person used the same address that I sent from (hot address).

1A8GjjLjypGRhZANRgEL6FiYZTqA4hrvDh

Thank for your help.

There are NO "from" addresses in bitcoin.
https://en.bitcoin.it/wiki/From_address

NEVER send bitcoin back to an address you received from.

At least now you've learnt the hard way and won't repeat the mistake again.

You'll have to keep on pestering Coinbase.
They have the private key to that address and they're the only ones that can help you.

I wish you good luck.

Thanks. 

That "someone else's input" might be Alice. Thus, when Charlie tries to send it back to Bob, it may actually end up with Alice. A more likely scenario is:

Richard sent 100 BTC to Coinbase and cashed out. Alex then sent 7 BTC from Coinbase. This may be funded out of Richard's 100, with 93 going to an internal change address. Bob then sent his Bitcoin and it was funded from that 93 BTC change address with 92 going to another change address. In this case Charlie's return gets stuck in Coinbase's internal change addresses.

What will be your problem here is if the address that recieved the coins is owned by another user and got credited from it and now he already used the coins to send it outside coinbase, in that case they will not be able to return it to you unless coinbase wants to waste some money for your mistake

"if the address that recieved the coins is owned by another user"
by the look of it, that address is a coinbase change address utxo:1 in that tx
I might be wrong but if this is the case it would be easy for them to handle/answer the support case filed by lebahye

"unless coinbase wants to waste some money for your mistake"
if the first assumption is correct, why would coinbase waste some money?
it only requires a little verification effort before crediting his account accordingly
if the address belongs to another user then it is complicated... but I doubt that's the case
just look at the tx date... the first two was in November 2016, and the last 2 was recently in November 2017