Just built a proof of concept implementation of nostr:nprofile1qqsyvrp9u6p0mfur9dfdru3d853tx9mdjuhkphxuxgfwmryja7zsvhqpz3mhxue69uhkummnw3ezummcw3ezuer9wcq3wamnwvaz7tmxd9k8getj9ehx7um5wgh8w6twv5qs6amnwvaz7tmwdaejumr0ds7csnrk 's new DM spec. I'm no cryptographer, but the spec looks really good. Maybe not to SimpleX standards regarding forward/future secrecy, but there is no more metadata leakage.