AUTH events are a privacy concern. zero knowledge proofs sent using an ephemeral key would be better solution. nostr:nprofile1qqsf03c2gsmx5ef4c9zmxvlew04gdh7u94afnknp33qvv3c94kvwxgspr3mhxue69uhksmmyd33x7epwvdhhyctrd3jjuar0dak8xtcpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhszxnhwden5te0wpuhyctdd9jzuenfv96x5ctx9e3k7mf0ss9zgs has discussed the concerns about AUTH events in the past. Interested?