(WIP) Namecoin: Fix cp_height for Timewarp Hardfork

TODO: Needs rebase once cp_height merged upstream. Cherry-picked from 342728a
namecoin · Nov 7, 2019 · e98e315 · e98e315
1 parent b2dd935
commit e98e315
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/electrum_nmc/electrum/interface.py b/electrum_nmc/electrum/interface.py
@@ -429,7 +429,8 @@ async def export_purported_checkpoints(self, cp_height, path):
         # use lower timeout as we usually have network.bhi_lock here
         timeout = self.network.get_network_timeout_seconds(NetworkTimeout.Urgent)
 
-        retarget_first_height = cp_height // 2016 * 2016
+        # first_height assumes checkpoint is after Timewarp Hardfork activation
+        retarget_first_height = cp_height // 2016 * 2016 - 1
         retarget_last_height = (cp_height+1) // 2016 * 2016 - 1
         retarget_last_chunk_index = (cp_height+1) // 2016 - 1