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Depends on the exchange I reckon, as some are closed off where you can only join with an invitation where it's a private exchange. I'm sure some exchanges have limited ability to transfer your coins around as well, where you might have a hard time cashing out on coinbase or sites like that. I honestly don't know much about HitBTC, personally.

Again, I should mention that this is just conjecture from a noobie. I really hope someone who knows their shit will pop in here and chime in for us.