It’s a way to predict which direction a currency’s exchange rate will move and stake USDb on it. One person posts an offer predicting a rate will go up or down; someone else takes the opposite side. Both put up an equal stake, and when the offer’s time window ends, we compare the starting rate to the ending rate — the side that predicted correctly wins the other side’s stake (minus a small fee).
Think of it as a head-to-head bet on an exchange rate (e.g. USD/NGN), settled automatically from funds both sides lock up front.
