Have you considered Cashu? - Doesnāt require KYC - Users can select their preferred custodian (removes liability from Primal if custodian is down) - Provides Lightning and ecash capabilities (nutzaps/new features become possible) - You can run your own .cash server for providing Lightning addresses - Userās balance and transactions (outside of public zap/nutzap events) are private Hereās a quick demo to show how easy it could be to implement: