diff --git a/chronik/chronik-indexer/src/indexer.rs b/chronik/chronik-indexer/src/indexer.rs
--- a/chronik/chronik-indexer/src/indexer.rs
+++ b/chronik/chronik-indexer/src/indexer.rs
@@ -411,9 +411,11 @@
             hash: block.db_block.hash,
             height: block.db_block.height,
         });
-        for tx in &block.txs {
-            subs.handle_tx_event(tx, TxMsgType::Confirmed, &token_id_aux);
-        }
+        subs.handle_block_tx_events(
+            &block.txs,
+            TxMsgType::Confirmed,
+            &token_id_aux,
+        );
         Ok(())
     }
 
@@ -512,9 +514,11 @@
         } else {
             TokenIdGroupAux::default()
         };
-        for tx in &block.txs {
-            subs.handle_tx_event(tx, TxMsgType::Finalized, &token_id_aux);
-        }
+        subs.handle_block_tx_events(
+            &block.txs,
+            TxMsgType::Finalized,
+            &token_id_aux,
+        );
         Ok(())
     }
 
diff --git a/chronik/chronik-indexer/src/subs.rs b/chronik/chronik-indexer/src/subs.rs
--- a/chronik/chronik-indexer/src/subs.rs
+++ b/chronik/chronik-indexer/src/subs.rs
@@ -83,6 +83,24 @@
             .handle_tx_event(tx, token_id_aux, msg_type);
     }
 
+    /// Send out msg_type updates for the txs of the block to subscribers.
+    pub fn handle_block_tx_events(
+        &mut self,
+        txs: &[Tx],
+        msg_type: TxMsgType,
+        token_id_aux: &TokenIdGroupAux,
+    ) {
+        if self.subs_script.is_empty() && self.subs_token_id.is_empty() {
+            // Short-circuit if no subscriptions
+            return;
+        }
+        for tx in txs {
+            self.subs_script.handle_tx_event(tx, &(), msg_type);
+            self.subs_token_id
+                .handle_tx_event(tx, token_id_aux, msg_type);
+        }
+    }
+
     pub(crate) fn broadcast_block_msg(&self, msg: BlockMsg) {
         if self.subs_block.receiver_count() > 0 {
             if let Err(err) = self.subs_block.send(msg) {
diff --git a/chronik/chronik-indexer/src/subs_group.rs b/chronik/chronik-indexer/src/subs_group.rs
--- a/chronik/chronik-indexer/src/subs_group.rs
+++ b/chronik/chronik-indexer/src/subs_group.rs
@@ -111,4 +111,9 @@
             }
         }
     }
+
+    /// Whether there are no subscribers for this group
+    pub fn is_empty(&self) -> bool {
+        self.subs.is_empty()
+    }
 }