Category-1, Category-2 and Category-3 crypto-asset licensees intending to operate solely as a broker and/or dealer for clients (intermediary service) are not permitted to structure their broking / dealing service or platform in such a way that it would be deemed as operating a market i.e. a crypto asset exchange. The CBB would consider features such as allowing for price discovery, displaying a public trading order book (accessible to any member of the public, regardless of whether they are clients), and allowing trades to automatically be matched using an exchange-type matching engine as characteristic of a crypto-asset exchange.