Hello,

Bouncing on Joseph's answer I have a few interrogations:

When you say the price might move between the moment we buy on one exchange and sell on the other you mean between the time we click on the button ?

I am not sure I get it right. If I buy a btc at 4000usd, even if the transaction takes a few hours to get verified and the btc to appear in my wallet, I will still have paid 4kusd for a bitcoin right ?

And if I short (of the exchange allows it) a btc on the other exchange for 4200usd, all i need is to transfer the btc from one wallet to the other and that should do it right ?

(All fees set aside)

Where do I get it wrong ?