From ff61071e6e9eff83dc78dddad0360cc10d7bfcd6 Mon Sep 17 00:00:00 2001
From: Konstantin Akimov <knstqq@gmail.com>
Date: Sat, 17 May 2025 22:38:04 +0700
Subject: [PATCH] fix: use correct hash of quorum as cycle hash to prevent
 possible misunderstandings

---
 src/llmq/instantsend.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/llmq/instantsend.cpp b/src/llmq/instantsend.cpp
index 2b52deeb8f3c..0c5f29607dc8 100644
--- a/src/llmq/instantsend.cpp
+++ b/src/llmq/instantsend.cpp
@@ -932,8 +932,11 @@ std::unordered_set<uint256, StaticSaltedHasher> CInstantSendManager::ProcessPend
         if (blockIndex->nHeight + dkgInterval < m_chainstate.m_chain.Height()) {
             nSignHeight = blockIndex->nHeight + dkgInterval - 1;
         }
+        // For RegTest non-rotating quorum cycleHash has directly quorum hash
+        auto quorum = llmq_params.useRotation ? llmq::SelectQuorumForSigning(llmq_params, m_chainstate.m_chain, qman,
+                                                                             id, nSignHeight, signOffset)
+                                              : qman.GetQuorum(llmq_params.type, islock->cycleHash);
 
-        auto quorum = llmq::SelectQuorumForSigning(llmq_params, m_chainstate.m_chain, qman, id, nSignHeight, signOffset);
         if (!quorum) {
             // should not happen, but if one fails to select, all others will also fail to select
             return {};