I want to wire some some, like 20k, to bitstamp, and wire them out of gox to work arbitrage. If I do this and receive these wires from the bank mtgox uses, could i run into troubles proving that's my money or something? Could i get audited? I live in europe by the way. I wouldn't wire my profits to the bank, i'd keep them in bitcoins so i wouldn't have to pay taxes on them.
Open a company in Germany and wire the cash out after 1 year without trading and you pay zero taxes and wont get into any kind of trouble.
Accidentally it also takes about 1 year to wire 20k out of Gox.