Hi, we just launched our new solo chain based on polkadot sdk (v1.19).
Telemetry can be seen here https://telemetry.polkadot.io/#list/0xfeb770bbb0344dabc8366b0d1f889a8e4e6ca09b914006655fe795920deb6d56.
Duniter is a rewrite of former home made blockchain for Ǧ1 currency. It’s a small UBI community mostly in France and Spain.
Thanks for developing substrate, it was nice to use it! https://git.duniter.org/nodes/rust/duniter-v2s/