diff --git a/crates/esplora/src/async_ext.rs b/crates/esplora/src/async_ext.rs
index 2b38289526..5845c74ec4 100644
--- a/crates/esplora/src/async_ext.rs
+++ b/crates/esplora/src/async_ext.rs
@@ -492,7 +492,11 @@ where
     let mut update = TxUpdate::<ConfirmationBlockTime>::default();
 
     // make sure txs exists in graph and tx statuses are updated
-    // TODO: We should maintain a tx cache (like we do with Electrum).
+    // A tx cache doesn't help here: Esplora's spk scan already returns full tx bodies (unlike
+    // Electrum, which needs a follow-up fetch per txid), and `inserted_txs` already dedupes
+    // against what that earlier spk phase fetched this sync. Swapping `get_tx_info` for
+    // `get_tx_status` to skip refetches is unsafe: unknown txids return HTTP 200
+    // {"confirmed":false}, so evicted txs would never be evicted.
     update.extend(
         fetch_txs_with_txids(
             client,
diff --git a/crates/esplora/src/blocking_ext.rs b/crates/esplora/src/blocking_ext.rs
index 225b574ea4..1fc6eef124 100644
--- a/crates/esplora/src/blocking_ext.rs
+++ b/crates/esplora/src/blocking_ext.rs
@@ -451,7 +451,11 @@ fn fetch_txs_with_outpoints<I: IntoIterator<Item = OutPoint>>(
     let mut update = TxUpdate::<ConfirmationBlockTime>::default();
 
     // make sure txs exists in graph and tx statuses are updated
-    // TODO: We should maintain a tx cache (like we do with Electrum).
+    // A tx cache doesn't help here: Esplora's spk scan already returns full tx bodies (unlike
+    // Electrum, which needs a follow-up fetch per txid), and `inserted_txs` already dedupes
+    // against what that earlier spk phase fetched this sync. Swapping `get_tx_info` for
+    // `get_tx_status` to skip refetches is unsafe: unknown txids return HTTP 200
+    // {"confirmed":false}, so evicted txs would never be evicted.
     update.extend(fetch_txs_with_txids(
         client,
         start_time,