rich1.0Niel Liesmons (npub149…g722q)https://yabu.me/npub149p5act9a5qm9p47elp8w8h3wpwn2d7s2xecw2ygnrxqp4wgsklq9g722qnjumphttps://yabu.meSo let's say: - I set up a group chat for my normie friends (Uncle Jimming a relay+blossom server for them). - I run a lightning node (Alby Hub style) - I run a #cashu mint on top of it How do I now: 1. only let that private group use the mint? 2. maximize privacy? Is there some kind of "Proof Of Group Member" that they can share? Is there a way for me to run the mint in "Blind Mode" or something (and prove it to them!)?