There is already an option in the exchange to turn a market on or off. As an admin, you can choose to display a market even if
Remember – the exchange deals with markets, not coins/currencies.
However, I have already developed a new shortcode [wallets_status] for wallets6. This displays the wallet status (connected / not connected) for each currency to users.
Since the new WP REST API now exposes this information to the frontend, I will add a small icon next to each currency indicating whether it is connected, for all the UIs. It will be easily hidden via CSS for people who don’t need it.