From a0a6b9300f11b4875e18d42bc4ce1f2787f4448b Mon Sep 17 00:00:00 2001
From: Daniel Knopik <107140945+dknopik@users.noreply.github.com>
Date: Wed, 25 Jun 2025 08:22:24 +0200
Subject: [PATCH] Do not compute sync selection proofs for the sync duty at the
 current slot (#7551)

---
 validator_client/validator_services/src/sync.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/validator_client/validator_services/src/sync.rs b/validator_client/validator_services/src/sync.rs
index c13b70db80..328308d514 100644
--- a/validator_client/validator_services/src/sync.rs
+++ b/validator_client/validator_services/src/sync.rs
@@ -512,8 +512,12 @@ pub async fn fill_in_aggregation_proofs<S: ValidatorStore, T: SlotClock + 'stati
         "Calculating sync selection proofs"
     );
 
+    // Start at the next slot, as aggregation proofs for the duty at the current slot are no longer
+    // required since we do the actual aggregation in the slot before the duty slot.
+    let start_slot = current_slot.as_u64() + 1;
+
     // Generate selection proofs for each validator at each slot, one slot at a time.
-    for slot in (current_slot.as_u64()..=pre_compute_slot.as_u64()).map(Slot::new) {
+    for slot in (start_slot..=pre_compute_slot.as_u64()).map(Slot::new) {
         let mut validator_proofs = vec![];
         for (validator_start_slot, duty) in pre_compute_duties {
             // Proofs are already known at this slot for this validator.