rich1.0/dev/fd0 (npub1v6…4nzyr)https://yabu.me/npub1v6qjdzkwgaydgxjvlnq7vsqxlwf4h0p4j7pt8ktprajd28r82tvs54nzyrnjumphttps://yabu.meYes, it can be used. There are multiple implementations. I’ve been working on adding it to Sparrow wallet for the past few weeks. https://github.com/QcMrHyde/sparrow-joinstr