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-rw-r--r--core/blockchain.go5
1 files changed, 5 insertions, 0 deletions
diff --git a/core/blockchain.go b/core/blockchain.go
index bb1c14f43..3fb8be15f 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -827,6 +827,11 @@ func (bc *BlockChain) WriteBlock(block *types.Block) (status WriteStatus, err er
bc.mu.Lock()
defer bc.mu.Unlock()
+ if bc.HasBlock(block.Hash()) {
+ log.Trace("Block existed", "hash", block.Hash())
+ return
+ }
+
localTd := bc.GetTd(bc.currentBlock.Hash(), bc.currentBlock.NumberU64())
externTd := new(big.Int).Add(block.Difficulty(), ptd)