From f251b87b636ec11099d7eb6db9eb6bbf8d615681 Mon Sep 17 00:00:00 2001
From: Tuna <ng.tuna@gmail.com>
Date: Mon, 11 Mar 2019 19:01:38 +0700
Subject: [PATCH] fullVerify after hard-fork 3M

---
 core/blockchain.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/core/blockchain.go b/core/blockchain.go
index c21edb7257..7c2cc82bd2 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -1257,7 +1257,11 @@ func (bc *BlockChain) PrepareBlock(block *types.Block) (err error) {
 		log.Debug("Stop prepare a block because inserting", "number", block.NumberU64(), "hash", block.Hash(), "validator", block.Header().Validator)
 		return nil
 	}
-	err = bc.engine.VerifyHeader(bc, block.Header(), false)
+	var fullVerify bool = false
+	if bc.chainConfig.IsTIPSigning(block.Number()) {
+		fullVerify = true
+	}
+	err = bc.engine.VerifyHeader(bc, block.Header(), fullVerify)
 	if err != nil {
 		return err
 	}