diff --git a/core/genesis.go b/core/genesis.go
index 78c7a353a5..f675be53fb 100644
--- a/core/genesis.go
+++ b/core/genesis.go
@@ -23,13 +23,13 @@ var EmptyShaList = crypto.Sha3(ethutil.Encode([]interface{}{}))
 var EmptyListRoot = crypto.Sha3(ethutil.Encode(""))
 
 func GenesisBlock(db ethutil.Database) *types.Block {
-	genesis := types.NewBlock(ZeroHash256, ZeroHash160, nil, big.NewInt(131072), 42, "")
+	genesis := types.NewBlock(ZeroHash256, ZeroHash160, nil, big.NewInt(2048), 42, "")
 	genesis.Header().Number = ethutil.Big0
 	genesis.Header().GasLimit = big.NewInt(1000000)
 	genesis.Header().GasUsed = ethutil.Big0
 	genesis.Header().Time = 0
-	genesis.Header().MixDigest = make([]byte, 32)
 	genesis.Header().SeedHash = make([]byte, 32)
+	genesis.Header().MixDigest = make([]byte, 32)
 
 	genesis.Td = ethutil.Big0
 
@@ -59,6 +59,10 @@ func GenesisBlock(db ethutil.Database) *types.Block {
 }
 
 var genesisData = []byte(`{
+	"0000000000000000000000000000000000000001": {"balance": "1"},
+	"0000000000000000000000000000000000000002": {"balance": "1"},
+	"0000000000000000000000000000000000000003": {"balance": "1"},
+	"0000000000000000000000000000000000000004": {"balance": "1"},
 	"dbdbdb2cbd23b783741e8d7fcf51e459b497e4a6": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
 	"e4157b34ea9615cfbde6b4fda419828124b70c78": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
 	"b9c015918bdaba24b4ff057a92a3873d6eb201be": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
@@ -66,9 +70,5 @@ var genesisData = []byte(`{
 	"cd2a3d9f938e13cd947ec05abc7fe734df8dd826": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
 	"2ef47100e0787b915105fd5e3f4ff6752079d5cb": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
 	"e6716f9544a56c530d868e4bfbacb172315bdead": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
-	"1a26338f0d905e295fccb71fa9ea849ffa12aaf4": {"balance": "1606938044258990275541962092341162602522202993782792835301376"},
-	"b0afc46d9ce366d06ab4952ca27db1d9557ae9fd": {"balance": "154162184000000000000000"},
-	"f6b1e9dc460d4d62cc22ec5f987d726929c0f9f0": {"balance": "102774789000000000000000"},
-	"cc45122d8b7fa0b1eaa6b29e0fb561422a9239d0": {"balance": "51387394000000000000000"},
-	"b7576e9d314df41ec5506494293afb1bd5d3f65d": {"balance": "69423399000000000000000"}
+	"1a26338f0d905e295fccb71fa9ea849ffa12aaf4": {"balance": "1606938044258990275541962092341162602522202993782792835301376"}
 }`)
diff --git a/core/types/block.go b/core/types/block.go
index 358d0bc2d7..18a21e8c6c 100644
--- a/core/types/block.go
+++ b/core/types/block.go
@@ -2,6 +2,7 @@ package types
 
 import (
 	"bytes"
+	"encoding/binary"
 	"fmt"
 	"math/big"
 	"sort"
@@ -40,7 +41,7 @@ type Header struct {
 	// Extra data
 	Extra string
 	// Nonce
-	Nonce uint64
+	Nonce []byte
 	// Mix digest for quick checking to prevent DOS
 	MixDigest ethutil.Bytes
 	// SeedHash used for light client verification
@@ -63,7 +64,7 @@ func (self *Header) rlpData(withNonce bool) []interface{} {
 		self.Time,
 		self.Extra}
 	if withNonce {
-		fields = append(fields, self.Nonce, self.MixDigest, self.SeedHash)
+		fields = append(fields, self.SeedHash, self.MixDigest, self.Nonce)
 	}
 
 	return fields
@@ -100,18 +101,23 @@ func NewBlock(parentHash []byte, coinbase []byte, root []byte, difficulty *big.I
 		ParentHash: parentHash,
 		Coinbase:   coinbase,
 		Difficulty: difficulty,
-		Nonce:      nonce,
 		Time:       uint64(time.Now().Unix()),
 		Extra:      extra,
 		GasUsed:    new(big.Int),
 		GasLimit:   new(big.Int),
 	}
+	header.setNonce(nonce)
 
 	block := &Block{header: header, Reward: new(big.Int)}
 
 	return block
 }
 
+func (self *Header) setNonce(nonce uint64) {
+	self.Nonce = make([]byte, 8)
+	binary.BigEndian.PutUint64(self.Nonce, nonce)
+}
+
 func NewBlockWithHeader(header *Header) *Block {
 	return &Block{header: header}
 }
@@ -191,11 +197,17 @@ func (self *Block) RlpDataForStorage() interface{} {
 }
 
 // Header accessors (add as you need them)
-func (self *Block) Number() *big.Int          { return self.header.Number }
-func (self *Block) NumberU64() uint64         { return self.header.Number.Uint64() }
-func (self *Block) MixDigest() []byte         { return self.header.MixDigest }
-func (self *Block) SeedHash() []byte          { return self.header.SeedHash }
-func (self *Block) Nonce() uint64             { return self.header.Nonce }
+func (self *Block) Number() *big.Int  { return self.header.Number }
+func (self *Block) NumberU64() uint64 { return self.header.Number.Uint64() }
+func (self *Block) MixDigest() []byte { return self.header.MixDigest }
+func (self *Block) SeedHash() []byte  { return self.header.SeedHash }
+func (self *Block) Nonce() uint64 {
+	return binary.BigEndian.Uint64(self.header.Nonce)
+}
+func (self *Block) SetNonce(nonce uint64) {
+	self.header.setNonce(nonce)
+}
+
 func (self *Block) Bloom() []byte             { return self.header.Bloom }
 func (self *Block) Coinbase() []byte          { return self.header.Coinbase }
 func (self *Block) Time() int64               { return int64(self.header.Time) }
@@ -267,11 +279,10 @@ func (self *Header) String() string {
 	GasUsed:	    %v
 	Time:		    %v
 	Extra:		    %v
-	Nonce:		    %d
-	MixDigest:          %x
 	SeedHash:           %x
-
-`, self.ParentHash, self.UncleHash, self.Coinbase, self.Root, self.TxHash, self.ReceiptHash, self.Bloom, self.Difficulty, self.Number, self.GasLimit, self.GasUsed, self.Time, self.Extra, self.Nonce, self.MixDigest, self.SeedHash)
+	MixDigest:          %x
+	Nonce:		    %x`,
+		self.ParentHash, self.UncleHash, self.Coinbase, self.Root, self.TxHash, self.ReceiptHash, self.Bloom, self.Difficulty, self.Number, self.GasLimit, self.GasUsed, self.Time, self.Extra, self.SeedHash, self.MixDigest, self.Nonce)
 }
 
 type Blocks []*Block
diff --git a/miner/worker.go b/miner/worker.go
index 8904c99730..38fc81ea5f 100644
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -151,7 +151,7 @@ func (self *worker) wait() {
 			// Someone Successfully Mined!
 			block := self.current.block
 			if block.Number().Uint64() == work.Number && block.Nonce() == 0 {
-				self.current.block.Header().Nonce = work.Nonce
+				self.current.block.SetNonce(work.Nonce)
 				self.current.block.Header().MixDigest = work.MixDigest
 				self.current.block.Header().SeedHash = work.SeedHash