Yeah, when we go to the UK we have to keep all of the receipts. Then you basically "sell" the currency for whatever it is trading at then. We use the price at

Yeah, when we go to the UK we have to keep all of the receipts. Then you basically "sell" the currency for whatever it is trading at then. We use the price at the end of the trading day and I think we use London prices (but I would have to check with my accountant). I assume for crypto currencies you would have to specify the exchange you are quoting against and not change it, but I'm not sure.