Beginning with the fact that cryptocurrency was originally built in some sort as a mean to avoid banks and the bureacracy related to those kind of thing, is there any use for bank to launch their crypto, why would people who are searching for a non-centralized way to manage their asset to join centralization expert like JPM or other
Ripple (XRP) is one of the Altcoin that is supported by the central bank, and I don't remember which country it belongs to, but you can find more information about it on the Internet. Also with some projects like Traxion also received support from banks from the Philippines.