From cf1274a42a7e2416d4958f91238edcb9cfcd3817 Mon Sep 17 00:00:00 2001
From: Duke <duke@hush.is>
Date: Thu, 20 Apr 2023 04:47:20 -0700
Subject: [PATCH] Remove unnecessary consistency checks

As per https://github.com/zcash/zcash/issues/6532 this should speed up
startup times by roughly 3X and drastically reduce disk i/o on startup.
---
 src/txdb.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/txdb.cpp b/src/txdb.cpp
index 602987412..22b70f5d5 100644
--- a/src/txdb.cpp
+++ b/src/txdb.cpp
@@ -737,6 +737,7 @@ bool CBlockTreeDB::LoadBlockIndexGuts()
 
                 //fprintf(stderr,"loadguts ht.%d\n",pindexNew->GetHeight());
                 // Consistency checks
+                /*
                 CBlockHeader header;
                 {
                     LOCK(cs_main);
@@ -753,6 +754,7 @@ bool CBlockTreeDB::LoadBlockIndexGuts()
                 if (header.GetHash() != pindexNew->GetBlockHash())
                     return error("LoadBlockIndex(): block header inconsistency detected: on-disk = %s, in-memory = %s",
                                  diskindex.ToString(),  pindexNew->ToString());
+
                 if ( 0 ) // POW will be checked before any block is connected
                 {
                     uint8_t pubkey33[33];
@@ -760,6 +762,7 @@ bool CBlockTreeDB::LoadBlockIndexGuts()
                     if (!CheckProofOfWork(header,pubkey33,pindexNew->GetHeight(),Params().GetConsensus()))
                         return error("LoadBlockIndex(): CheckProofOfWork failed: %s", pindexNew->ToString());
                 }
+                */
                 pcursor->Next();
             } else {
                 return error("LoadBlockIndex() : failed to read value");