Picture someone in a South African township walking into a grocery store, picking up a bread roll, and scanning a QR code at the till to pay from their phone. They pay in Bitcoin over the Lightning Network from a private, self-custodial wallet. They control their own keys, much like holding cash in their own pocket. The retailer receives rand through its existing payment provider. No money leaves the country. No foreign exchange is involved. No intermediary holds the customer’s funds at any point.