diff --git a/crates/chats/src/lib.rs b/crates/chats/src/lib.rs
index e22e6a7..acb3bba 100644
--- a/crates/chats/src/lib.rs
+++ b/crates/chats/src/lib.rs
@@ -1,6 +1,6 @@
 use std::{
     cmp::Reverse,
-    collections::{BTreeMap, HashMap},
+    collections::{BTreeMap, HashMap, HashSet}
 };
 
 use account::Account;
@@ -181,6 +181,7 @@ impl ChatRegistry {
             let events = send_events.merge(recv_events);
 
             let mut room_map: HashMap<u64, (Event, usize, bool)> = HashMap::new();
+            let mut trusted_keys: HashSet<PublicKey> = HashSet::new();
 
             // Process each event and group by room hash
             for event in events
@@ -189,10 +190,18 @@ impl ChatRegistry {
             {
                 let hash = room_hash(&event);
 
-                // Check if room's author is seen in any contact list
-                let filter = Filter::new().kind(Kind::ContactList).pubkey(event.pubkey);
-                // If room's author is seen at least once, mark as trusted
-                let is_trust = client.database().count(filter).await? >= 1;
+                let mut is_trust = trusted_keys.contains(&event.pubkey);
+
+                if is_trust == false {
+                    // Check if room's author is seen in any contact list
+                    let filter = Filter::new().kind(Kind::ContactList).pubkey(event.pubkey);
+                    // If room's author is seen at least once, mark as trusted
+                    is_trust = client.database().count(filter).await? >= 1;
+
+                    if is_trust {
+                        trusted_keys.insert(event.pubkey);
+                    }
+                }
 
                 room_map
                     .entry(hash)
diff --git a/crates/coop/src/main.rs b/crates/coop/src/main.rs
index 3fcc05f..f72d1e5 100644
--- a/crates/coop/src/main.rs
+++ b/crates/coop/src/main.rs
@@ -147,6 +147,8 @@ fn main() {
             let new_id = SubscriptionId::new(NEW_MESSAGE_SUB_ID);
             let mut notifications = client.notifications();
 
+            let mut processed_events: HashSet<EventId> = HashSet::new();
+
             while let Ok(notification) = notifications.recv().await {
                 if let RelayPoolNotification::Message { message, .. } = notification {
                     match message {
@@ -154,6 +156,9 @@ fn main() {
                             event,
                             subscription_id,
                         } => {
+                            if processed_events.contains(&event.id) { continue }
+                            processed_events.insert(event.id);
+
                             match event.kind {
                                 Kind::GiftWrap => {
                                     let event = match get_unwrapped(event.id).await {