From f33c9e36ecc78d06822cc4036ca33ca257df5a87 Mon Sep 17 00:00:00 2001
From: "Jonathan \"Duke\" Leto" <jonathan@leto.net>
Date: Mon, 17 Sep 2018 13:56:07 -0700
Subject: [PATCH] Add additional security measure to prevent disconnecting
 notarized blocks

---
 src/main.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main.cpp b/src/main.cpp
index 41de90556..bb8be2e5f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2672,6 +2672,15 @@ bool static DisconnectTip(CValidationState &state) {
     CBlock block;
     if (!ReadBlockFromDisk(block, pindexDelete))
         return AbortNode(state, "Failed to read block");
+
+    int32_t prevMoMheight; uint256 notarizedhash,txid;
+    komodo_notarized_height(&prevMoMheight,&notarizedhash,&txid);
+    if ( block.GetHash() == notarizedhash )
+    {
+        fprintf(stderr,"DisconnectTip trying to disconnect notarized block at ht.%d\n",(int32_t)pindexDelete->nHeight);
+        return(false);
+    }
+
     // Apply the block atomically to the chain state.
     uint256 anchorBeforeDisconnect = pcoinsTip->GetBestAnchor();
     int64_t nStart = GetTimeMicros();