I wonder how I am supposed to sell bitcoins on an exchange. I have been considering several and have gone through the KYC/AML process for three exchanges. The problem is once I sell my coins they might ask me to prove where I got them from. Keep in mind I am not intending to withdraw the FIAT, I just want to sell high and rebuy lower, and withdraw the coins.
The problem with proving the source of my coins is, how the hell do I do it? I bought them on MtGox and they can't ask MtGox for verification. Even if they did, the coins have gone through several addresses over the years. I can't even trace it back to the MtGox purchase since they went through other exchanges (and got mixed).
So what is one supposed to do here?
In that case, I'm not experiencing that already even I am trader. I trade in many exchanges site but not kind of issue. So for the advice, you need to give what they want like what he said, 'where it came from'. Tell him the truth even short words or long words. And it is for your security also why that is happening to prevent lost your money from scammers or hackers.