a. Alice in New York wants to send $1000 to Bob in Japan. b. Alice finds a trader John who can help trade USD to Yen immediately. c. Alice then escrows 5% worth of transaction, which is $50 worth of URE, which will be later sent to the trader as a trade commission.
d. John accepts the USD sent by Alice offline, either bank transfer or any other medium suggested by John. e. John now sends $1000 worth of Yen to Bob in Japan. f. Alice and John both review each other and hence complete the trade.