I gave you all my exchanges id. Who but the owner knows about this? You just found a reason not to give this money away.
We could've either issued a refund to an address you sent us deposit from or proceed with your exchange — what you want us to do is to send 3 BTC to an unknown address by providing us with an Exchange ID.
We can't send 3 BTC to a 3rd party address without being absolute certainty in the fact that we are talking to the owner of the funds.
I see a similar case. Okay, are you talking about the evidence of the initiator of the exchange? In my case, I proved this to you by providing the hash of your transaction and the transaction size. You're a scammer! You made a mistake and are trying to avoid responsibility! Here I blame you
https://bitcointalk.org/index.php?topic=5359412.msg57911052#msg57911052