From 12f789a96df5c0e100ca52b37e70d3d119d0c2f7 Mon Sep 17 00:00:00 2001
From: Luke Imhoff <luke.imhoff@dockyard.com>
Date: Tue, 25 Sep 2018 10:24:14 -0500
Subject: [PATCH] Use hash for Block conflict_target

As the consensus block and zero or more non-consensus (uncle) blocks can
have the same number now, number is no longer unique and not a good
conflict_target, so switch to hash.
---
 apps/explorer/lib/explorer/chain/import.ex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/explorer/lib/explorer/chain/import.ex b/apps/explorer/lib/explorer/chain/import.ex
index cc1e99e16b..2704fa4157 100644
--- a/apps/explorer/lib/explorer/chain/import.ex
+++ b/apps/explorer/lib/explorer/chain/import.ex
@@ -724,7 +724,7 @@ defmodule Explorer.Chain.Import do
     {:ok, blocks} =
       insert_changes_list(
         ordered_changes_list,
-        conflict_target: :number,
+        conflict_target: :hash,
         on_conflict: :replace_all,
         for: Block,
         returning: true,