Add NIP-05 verification compatibility

users/models.py

@@ -81,6 +81,19 @@ class User(ModelMeta, AbstractUser):
         help_text="SHA-256 hash of the user's OpenID URL, used for Libravatar",
     )
 
+    nostr_key = models.CharField(
+        max_length=32,
+        unique=True,
+        blank=True,
+        null=True,
+        help_text="A Nostr public key in 32-byte hex format",
+    )
+    nostr_relays = models.JSONField(
+        default=list,
+        blank=True,
+        help_text="An array of Nostr relay URLs that this public key posts to",
+    )
+
     @property
     def calc_email_md5(self):
         return md5(self.email.lower().encode("utf-8")).hexdigest()