From 6b92d541dabc289043529f65e586e40c4613e7f8 Mon Sep 17 00:00:00 2001
From: obscuren <geffobscura@gmail.com>
Date: Tue, 21 Oct 2014 13:30:23 +0200
Subject: Empty string for uncle

---
 ethchain/block.go   | 8 ++++----
 ethchain/genesis.go | 3 +--
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/ethchain/block.go b/ethchain/block.go
index fc7c6b13f..951bd8de3 100644
--- a/ethchain/block.go
+++ b/ethchain/block.go
@@ -130,7 +130,7 @@ func CreateBlock(root interface{},
 		Nonce:       Nonce,
 		Time:        time.Now().Unix(),
 		Extra:       extra,
-		UncleSha:    EmptyShaList, //nil,
+		UncleSha:    nil,
 		GasUsed:     new(big.Int),
 		MinGasPrice: new(big.Int),
 		GasLimit:    new(big.Int),
@@ -237,9 +237,9 @@ func (block *Block) SetUncles(uncles []*Block) {
 	block.Uncles = uncles
 
 	// Sha of the concatenated uncles
-	//if len(uncles) > 0 {
-	//	block.UncleSha = ethcrypto.Sha3(ethutil.Encode(block.rlpUncles()))
-	//}
+	if len(uncles) > 0 {
+		block.UncleSha = ethcrypto.Sha3(ethutil.Encode(block.rlpUncles()))
+	}
 }
 
 func (self *Block) SetReceipts(receipts []*Receipt, txs []*Transaction) {
diff --git a/ethchain/genesis.go b/ethchain/genesis.go
index ab6469bb4..8a6cb5527 100644
--- a/ethchain/genesis.go
+++ b/ethchain/genesis.go
@@ -18,9 +18,8 @@ var EmptyShaList = ethcrypto.Sha3(ethutil.Encode([]interface{}{}))
 var GenesisHeader = []interface{}{
 	// Previous hash (none)
 	ZeroHash256,
-	ethcrypto.Sha3(ethutil.Encode([]interface{}{})),
 	// Empty uncles
-	//"",
+	"",
 	// Coinbase
 	ZeroHash160,
 	// Root state
-- 
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