Merge pull request #1762 from Gustav-Simonsson/temp_v1.0.4

1.0.4

21 files changed, 406 insertions, 68 deletions

diff --git a/cmd/evm/main.go b/cmd/evm/main.go
index 965994382..34977f47f 100644
--- a/cmd/evm/main.go
+++ b/cmd/evm/main.go
@@ -152,7 +152,7 @@ type VMEnv struct {
 
 	depth int
 	Gas   *big.Int
-	time  uint64
+	time  *big.Int
 	logs  []vm.StructLog
 }
 
@@ -161,7 +161,7 @@ func NewEnv(state *state.StateDB, transactor common.Address, value *big.Int) *VM
 		state:      state,
 		transactor: &transactor,
 		value:      value,
-		time:       uint64(time.Now().Unix()),
+		time:       big.NewInt(time.Now().Unix()),
 	}
 }
 
@@ -169,7 +169,7 @@ func (self *VMEnv) State() *state.StateDB    { return self.state }
 func (self *VMEnv) Origin() common.Address   { return *self.transactor }
 func (self *VMEnv) BlockNumber() *big.Int    { return common.Big0 }
 func (self *VMEnv) Coinbase() common.Address { return *self.transactor }
-func (self *VMEnv) Time() uint64             { return self.time }
+func (self *VMEnv) Time() *big.Int           { return self.time }
 func (self *VMEnv) Difficulty() *big.Int     { return common.Big1 }
 func (self *VMEnv) BlockHash() []byte        { return make([]byte, 32) }
 func (self *VMEnv) Value() *big.Int          { return self.value }
diff --git a/cmd/geth/main.go b/cmd/geth/main.go
index cd903e62b..8320ab75b 100644
--- a/cmd/geth/main.go
+++ b/cmd/geth/main.go
@@ -50,7 +50,7 @@ import (
 
 const (
 	ClientIdentifier = "Geth"
-	Version          = "1.0.1"
+	Version          = "1.0.3"
 )
 
 var (
diff --git a/core/block_processor.go b/core/block_processor.go
index 5a2ad8377..6d6a3cfcc 100644
--- a/core/block_processor.go
+++ b/core/block_processor.go
@@ -57,6 +57,18 @@ type BlockProcessor struct {
 	eventMux *event.TypeMux
 }
 
+// TODO: type GasPool big.Int
+//
+// GasPool is implemented by state.StateObject. This is a historical
+// coincidence. Gas tracking should move out of StateObject.
+
+// GasPool tracks the amount of gas available during
+// execution of the transactions in a block.
+type GasPool interface {
+	AddGas(gas, price *big.Int)
+	SubGas(gas, price *big.Int) error
+}
+
 func NewBlockProcessor(db, extra common.Database, pow pow.PoW, chainManager *ChainManager, eventMux *event.TypeMux) *BlockProcessor {
 	sm := &BlockProcessor{
 		db:       db,
@@ -66,16 +78,15 @@ func NewBlockProcessor(db, extra common.Database, pow pow.PoW, chainManager *Cha
 		bc:       chainManager,
 		eventMux: eventMux,
 	}
-
 	return sm
 }
 
 func (sm *BlockProcessor) TransitionState(statedb *state.StateDB, parent, block *types.Block, transientProcess bool) (receipts types.Receipts, err error) {
-	coinbase := statedb.GetOrNewStateObject(block.Coinbase())
-	coinbase.SetGasLimit(block.GasLimit())
+	gp := statedb.GetOrNewStateObject(block.Coinbase())
+	gp.SetGasLimit(block.GasLimit())
 
 	// Process the transactions on to parent state
-	receipts, err = sm.ApplyTransactions(coinbase, statedb, block, block.Transactions(), transientProcess)
+	receipts, err = sm.ApplyTransactions(gp, statedb, block, block.Transactions(), transientProcess)
 	if err != nil {
 		return nil, err
 	}
@@ -83,11 +94,8 @@ func (sm *BlockProcessor) TransitionState(statedb *state.StateDB, parent, block
 	return receipts, nil
 }
 
-func (self *BlockProcessor) ApplyTransaction(coinbase *state.StateObject, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int, transientProcess bool) (*types.Receipt, *big.Int, error) {
-	// If we are mining this block and validating we want to set the logs back to 0
-
-	cb := statedb.GetStateObject(coinbase.Address())
-	_, gas, err := ApplyMessage(NewEnv(statedb, self.bc, tx, header), tx, cb)
+func (self *BlockProcessor) ApplyTransaction(gp GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int, transientProcess bool) (*types.Receipt, *big.Int, error) {
+	_, gas, err := ApplyMessage(NewEnv(statedb, self.bc, tx, header), tx, gp)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -122,7 +130,7 @@ func (self *BlockProcessor) ChainManager() *ChainManager {
 	return self.bc
 }
 
-func (self *BlockProcessor) ApplyTransactions(coinbase *state.StateObject, statedb *state.StateDB, block *types.Block, txs types.Transactions, transientProcess bool) (types.Receipts, error) {
+func (self *BlockProcessor) ApplyTransactions(gp GasPool, statedb *state.StateDB, block *types.Block, txs types.Transactions, transientProcess bool) (types.Receipts, error) {
 	var (
 		receipts      types.Receipts
 		totalUsedGas  = big.NewInt(0)
@@ -134,7 +142,7 @@ func (self *BlockProcessor) ApplyTransactions(coinbase *state.StateObject, state
 	for i, tx := range txs {
 		statedb.StartRecord(tx.Hash(), block.Hash(), i)
 
-		receipt, txGas, err := self.ApplyTransaction(coinbase, statedb, header, tx, totalUsedGas, transientProcess)
+		receipt, txGas, err := self.ApplyTransaction(gp, statedb, header, tx, totalUsedGas, transientProcess)
 		if err != nil {
 			return nil, err
 		}
@@ -207,7 +215,7 @@ func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (logs st
 	txs := block.Transactions()
 
 	// Block validation
-	if err = ValidateHeader(sm.Pow, header, parent, false); err != nil {
+	if err = ValidateHeader(sm.Pow, header, parent, false, false); err != nil {
 		return
 	}
 
@@ -331,7 +339,7 @@ func (sm *BlockProcessor) VerifyUncles(statedb *state.StateDB, block, parent *ty
 			return UncleError("uncle[%d](%x)'s parent is not ancestor (%x)", i, hash[:4], uncle.ParentHash[0:4])
 		}
 
-		if err := ValidateHeader(sm.Pow, uncle, ancestors[uncle.ParentHash], true); err != nil {
+		if err := ValidateHeader(sm.Pow, uncle, ancestors[uncle.ParentHash], true, true); err != nil {
 			return ValidationError(fmt.Sprintf("uncle[%d](%x) header invalid: %v", i, hash[:4], err))
 		}
 	}
@@ -374,19 +382,25 @@ func (sm *BlockProcessor) GetLogs(block *types.Block) (logs state.Logs, err erro
 
 // See YP section 4.3.4. "Block Header Validity"
 // Validates a block. Returns an error if the block is invalid.
-func ValidateHeader(pow pow.PoW, block *types.Header, parent *types.Block, checkPow bool) error {
+func ValidateHeader(pow pow.PoW, block *types.Header, parent *types.Block, checkPow, uncle bool) error {
 	if big.NewInt(int64(len(block.Extra))).Cmp(params.MaximumExtraDataSize) == 1 {
 		return fmt.Errorf("Block extra data too long (%d)", len(block.Extra))
 	}
 
-	if block.Time > uint64(time.Now().Unix()) {
-		return BlockFutureErr
+	if uncle {
+		if block.Time.Cmp(common.MaxBig) == 1 {
+			return BlockTSTooBigErr
+		}
+	} else {
+		if block.Time.Cmp(big.NewInt(time.Now().Unix())) == 1 {
+			return BlockFutureErr
+		}
 	}
-	if block.Time <= parent.Time() {
+	if block.Time.Cmp(parent.Time()) != 1 {
 		return BlockEqualTSErr
 	}
 
-	expd := CalcDifficulty(block.Time, parent.Time(), parent.Number(), parent.Difficulty())
+	expd := CalcDifficulty(block.Time.Uint64(), parent.Time().Uint64(), parent.Number(), parent.Difficulty())
 	if expd.Cmp(block.Difficulty) != 0 {
 		return fmt.Errorf("Difficulty check failed for block %v, %v", block.Difficulty, expd)
 	}
diff --git a/core/block_processor_test.go b/core/block_processor_test.go
index f48ce9607..da16afedc 100644
--- a/core/block_processor_test.go
+++ b/core/block_processor_test.go
@@ -48,13 +48,13 @@ func TestNumber(t *testing.T) {
 	statedb := state.New(chain.Genesis().Root(), chain.stateDb)
 	header := makeHeader(chain.Genesis(), statedb)
 	header.Number = big.NewInt(3)
-	err := ValidateHeader(pow, header, chain.Genesis(), false)
+	err := ValidateHeader(pow, header, chain.Genesis(), false, false)
 	if err != BlockNumberErr {
 		t.Errorf("expected block number error, got %q", err)
 	}
 
 	header = makeHeader(chain.Genesis(), statedb)
-	err = ValidateHeader(pow, header, chain.Genesis(), false)
+	err = ValidateHeader(pow, header, chain.Genesis(), false, false)
 	if err == BlockNumberErr {
 		t.Errorf("didn't expect block number error")
 	}
diff --git a/core/chain_makers.go b/core/chain_makers.go
index 85a6175dc..3c3b11a7e 100644
--- a/core/chain_makers.go
+++ b/core/chain_makers.go
@@ -166,16 +166,21 @@ func GenerateChain(parent *types.Block, db common.Database, n int, gen func(int,
 }
 
 func makeHeader(parent *types.Block, state *state.StateDB) *types.Header {
-	time := parent.Time() + 10 // block time is fixed at 10 seconds
+	var time *big.Int
+	if parent.Time() == nil {
+		time = big.NewInt(10)
+	} else {
+		time = new(big.Int).Add(parent.Time(), big.NewInt(10)) // block time is fixed at 10 seconds
+	}
 	return &types.Header{
 		Root:       state.Root(),
 		ParentHash: parent.Hash(),
 		Coinbase:   parent.Coinbase(),
-		Difficulty: CalcDifficulty(time, parent.Time(), parent.Number(), parent.Difficulty()),
+		Difficulty: CalcDifficulty(time.Uint64(), new(big.Int).Sub(time, big.NewInt(10)).Uint64(), parent.Number(), parent.Difficulty()),
 		GasLimit:   CalcGasLimit(parent),
 		GasUsed:    new(big.Int),
 		Number:     new(big.Int).Add(parent.Number(), common.Big1),
-		Time:       uint64(time),
+		Time:       time,
 	}
 }
 
diff --git a/core/chain_manager.go b/core/chain_manager.go
index fc1d1304f..2f6a56711 100644
--- a/core/chain_manager.go
+++ b/core/chain_manager.go
@@ -600,7 +600,8 @@ func (self *ChainManager) InsertChain(chain types.Blocks) (int, error) {
 				// Allow up to MaxFuture second in the future blocks. If this limit
 				// is exceeded the chain is discarded and processed at a later time
 				// if given.
-				if max := uint64(time.Now().Unix()) + maxTimeFutureBlocks; block.Time() > max {
+				max := big.NewInt(time.Now().Unix() + maxTimeFutureBlocks)
+				if block.Time().Cmp(max) == 1 {
 					return i, fmt.Errorf("%v: BlockFutureErr, %v > %v", BlockFutureErr, block.Time(), max)
 				}
 
diff --git a/core/error.go b/core/error.go
index 5e6ff4de7..09eea22d6 100644
--- a/core/error.go
+++ b/core/error.go
@@ -25,9 +25,10 @@ import (
 )
 
 var (
-	BlockNumberErr  = errors.New("block number invalid")
-	BlockFutureErr  = errors.New("block time is in the future")
-	BlockEqualTSErr = errors.New("block time stamp equal to previous")
+	BlockNumberErr   = errors.New("block number invalid")
+	BlockFutureErr   = errors.New("block time is in the future")
+	BlockTSTooBigErr = errors.New("block time too big")
+	BlockEqualTSErr  = errors.New("block time stamp equal to previous")
 )
 
 // Parent error. In case a parent is unknown this error will be thrown
diff --git a/core/genesis.go b/core/genesis.go
index 4c0323c17..80a4d2b73 100644
--- a/core/genesis.go
+++ b/core/genesis.go
@@ -73,7 +73,7 @@ func WriteGenesisBlock(stateDb, blockDb common.Database, reader io.Reader) (*typ
 	difficulty := common.String2Big(genesis.Difficulty)
 	block := types.NewBlock(&types.Header{
 		Nonce:      types.EncodeNonce(common.String2Big(genesis.Nonce).Uint64()),
-		Time:       common.String2Big(genesis.Timestamp).Uint64(),
+		Time:       common.String2Big(genesis.Timestamp),
 		ParentHash: common.HexToHash(genesis.ParentHash),
 		Extra:      common.FromHex(genesis.ExtraData),
 		GasLimit:   common.String2Big(genesis.GasLimit),
diff --git a/core/state_transition.go b/core/state_transition.go
index a5d4fc19b..6ff7fa1ff 100644
--- a/core/state_transition.go
+++ b/core/state_transition.go
@@ -45,7 +45,7 @@ import (
  * 6) Derive new state root
  */
 type StateTransition struct {
-	coinbase      common.Address
+	gp            GasPool
 	msg           Message
 	gas, gasPrice *big.Int
 	initialGas    *big.Int
@@ -53,8 +53,6 @@ type StateTransition struct {
 	data          []byte
 	state         *state.StateDB
 
-	cb, rec, sen *state.StateObject
-
 	env vm.Environment
 }
 
@@ -96,13 +94,13 @@ func IntrinsicGas(data []byte) *big.Int {
 	return igas
 }
 
-func ApplyMessage(env vm.Environment, msg Message, coinbase *state.StateObject) ([]byte, *big.Int, error) {
-	return NewStateTransition(env, msg, coinbase).transitionState()
+func ApplyMessage(env vm.Environment, msg Message, gp GasPool) ([]byte, *big.Int, error) {
+	return NewStateTransition(env, msg, gp).transitionState()
 }
 
-func NewStateTransition(env vm.Environment, msg Message, coinbase *state.StateObject) *StateTransition {
+func NewStateTransition(env vm.Environment, msg Message, gp GasPool) *StateTransition {
 	return &StateTransition{
-		coinbase:   coinbase.Address(),
+		gp:         gp,
 		env:        env,
 		msg:        msg,
 		gas:        new(big.Int),
@@ -111,13 +109,9 @@ func NewStateTransition(env vm.Environment, msg Message, coinbase *state.StateOb
 		value:      msg.Value(),
 		data:       msg.Data(),
 		state:      env.State(),
-		cb:         coinbase,
 	}
 }
 
-func (self *StateTransition) Coinbase() *state.StateObject {
-	return self.state.GetOrNewStateObject(self.coinbase)
-}
 func (self *StateTransition) From() (*state.StateObject, error) {
 	f, err := self.msg.From()
 	if err != nil {
@@ -160,7 +154,7 @@ func (self *StateTransition) BuyGas() error {
 	if sender.Balance().Cmp(mgval) < 0 {
 		return fmt.Errorf("insufficient ETH for gas (%x). Req %v, has %v", sender.Address().Bytes()[:4], mgval, sender.Balance())
 	}
-	if err = self.Coinbase().SubGas(mgas, self.gasPrice); err != nil {
+	if err = self.gp.SubGas(mgas, self.gasPrice); err != nil {
 		return err
 	}
 	self.AddGas(mgas)
@@ -241,13 +235,12 @@ func (self *StateTransition) transitionState() (ret []byte, usedGas *big.Int, er
 	}
 
 	self.refundGas()
-	self.state.AddBalance(self.coinbase, new(big.Int).Mul(self.gasUsed(), self.gasPrice))
+	self.state.AddBalance(self.env.Coinbase(), new(big.Int).Mul(self.gasUsed(), self.gasPrice))
 
 	return ret, self.gasUsed(), err
 }
 
 func (self *StateTransition) refundGas() {
-	coinbase := self.Coinbase()
 	sender, _ := self.From() // err already checked
 	// Return remaining gas
 	remaining := new(big.Int).Mul(self.gas, self.gasPrice)
@@ -258,7 +251,7 @@ func (self *StateTransition) refundGas() {
 	self.gas.Add(self.gas, refund)
 	self.state.AddBalance(sender.Address(), refund.Mul(refund, self.gasPrice))
 
-	coinbase.AddGas(self.gas, self.gasPrice)
+	self.gp.AddGas(self.gas, self.gasPrice)
 }
 
 func (self *StateTransition) gasUsed() *big.Int {
diff --git a/core/types/block.go b/core/types/block.go
index 427a3e6cb..2188e6d4d 100644
--- a/core/types/block.go
+++ b/core/types/block.go
@@ -60,7 +60,7 @@ type Header struct {
 	Number      *big.Int       // The block number
 	GasLimit    *big.Int       // Gas limit
 	GasUsed     *big.Int       // Gas used
-	Time        uint64         // Creation time
+	Time        *big.Int       // Creation time
 	Extra       []byte         // Extra data
 	MixDigest   common.Hash    // for quick difficulty verification
 	Nonce       BlockNonce
@@ -94,7 +94,7 @@ func (h *Header) UnmarshalJSON(data []byte) error {
 		Coinbase   string
 		Difficulty string
 		GasLimit   string
-		Time       uint64
+		Time       *big.Int
 		Extra      string
 	}
 	dec := json.NewDecoder(bytes.NewReader(data))
@@ -210,6 +210,9 @@ func NewBlockWithHeader(header *Header) *Block {
 
 func copyHeader(h *Header) *Header {
 	cpy := *h
+	if cpy.Time = new(big.Int); h.Time != nil {
+		cpy.Time.Set(h.Time)
+	}
 	if cpy.Difficulty = new(big.Int); h.Difficulty != nil {
 		cpy.Difficulty.Set(h.Difficulty)
 	}
@@ -301,13 +304,13 @@ func (b *Block) Number() *big.Int     { return new(big.Int).Set(b.header.Number)
 func (b *Block) GasLimit() *big.Int   { return new(big.Int).Set(b.header.GasLimit) }
 func (b *Block) GasUsed() *big.Int    { return new(big.Int).Set(b.header.GasUsed) }
 func (b *Block) Difficulty() *big.Int { return new(big.Int).Set(b.header.Difficulty) }
+func (b *Block) Time() *big.Int       { return new(big.Int).Set(b.header.Time) }
 
 func (b *Block) NumberU64() uint64        { return b.header.Number.Uint64() }
 func (b *Block) MixDigest() common.Hash   { return b.header.MixDigest }
 func (b *Block) Nonce() uint64            { return binary.BigEndian.Uint64(b.header.Nonce[:]) }
 func (b *Block) Bloom() Bloom             { return b.header.Bloom }
 func (b *Block) Coinbase() common.Address { return b.header.Coinbase }
-func (b *Block) Time() uint64             { return b.header.Time }
 func (b *Block) Root() common.Hash        { return b.header.Root }
 func (b *Block) ParentHash() common.Hash  { return b.header.ParentHash }
 func (b *Block) TxHash() common.Hash      { return b.header.TxHash }
diff --git a/core/types/block_test.go b/core/types/block_test.go
index aebb6328b..cdd8431f4 100644
--- a/core/types/block_test.go
+++ b/core/types/block_test.go
@@ -47,7 +47,7 @@ func TestBlockEncoding(t *testing.T) {
 	check("Root", block.Root(), common.HexToHash("ef1552a40b7165c3cd773806b9e0c165b75356e0314bf0706f279c729f51e017"))
 	check("Hash", block.Hash(), common.HexToHash("0a5843ac1cb04865017cb35a57b50b07084e5fcee39b5acadade33149f4fff9e"))
 	check("Nonce", block.Nonce(), uint64(0xa13a5a8c8f2bb1c4))
-	check("Time", block.Time(), uint64(1426516743))
+	check("Time", block.Time(), big.NewInt(1426516743))
 	check("Size", block.Size(), common.StorageSize(len(blockEnc)))
 
 	tx1 := NewTransaction(0, common.HexToAddress("095e7baea6a6c7c4c2dfeb977efac326af552d87"), big.NewInt(10), big.NewInt(50000), big.NewInt(10), nil)
diff --git a/core/vm/environment.go b/core/vm/environment.go
index 723924b6f..798ecea79 100644
--- a/core/vm/environment.go
+++ b/core/vm/environment.go
@@ -33,7 +33,7 @@ type Environment interface {
 	BlockNumber() *big.Int
 	GetHash(n uint64) common.Hash
 	Coinbase() common.Address
-	Time() uint64
+	Time() *big.Int
 	Difficulty() *big.Int
 	GasLimit() *big.Int
 	Transfer(from, to Account, amount *big.Int) error
diff --git a/core/vm/vm.go b/core/vm/vm.go
index 21e0a4665..de5030614 100644
--- a/core/vm/vm.go
+++ b/core/vm/vm.go
@@ -461,7 +461,7 @@ func (self *Vm) Run(context *Context, input []byte) (ret []byte, err error) {
 		case TIMESTAMP:
 			time := self.env.Time()
 
-			stack.push(new(big.Int).SetUint64(time))
+			stack.push(new(big.Int).Set(time))
 
 		case NUMBER:
 			number := self.env.BlockNumber()
diff --git a/core/vm_env.go b/core/vm_env.go
index c1a86d63e..482a11815 100644
--- a/core/vm_env.go
+++ b/core/vm_env.go
@@ -49,7 +49,7 @@ func NewEnv(state *state.StateDB, chain *ChainManager, msg Message, header *type
 func (self *VMEnv) Origin() common.Address   { f, _ := self.msg.From(); return f }
 func (self *VMEnv) BlockNumber() *big.Int    { return self.header.Number }
 func (self *VMEnv) Coinbase() common.Address { return self.header.Coinbase }
-func (self *VMEnv) Time() uint64             { return self.header.Time }
+func (self *VMEnv) Time() *big.Int           { return self.header.Time }
 func (self *VMEnv) Difficulty() *big.Int     { return self.header.Difficulty }
 func (self *VMEnv) GasLimit() *big.Int       { return self.header.GasLimit }
 func (self *VMEnv) Value() *big.Int          { return self.msg.Value() }
diff --git a/eth/handler.go b/eth/handler.go
index 2bd369901..1fd5324d5 100644
--- a/eth/handler.go
+++ b/eth/handler.go
@@ -117,7 +117,7 @@ func NewProtocolManager(networkId int, mux *event.TypeMux, txpool txPool, pow po
 	manager.downloader = downloader.New(manager.eventMux, manager.chainman.HasBlock, manager.chainman.GetBlock, manager.chainman.CurrentBlock, manager.chainman.InsertChain, manager.removePeer)
 
 	validator := func(block *types.Block, parent *types.Block) error {
-		return core.ValidateHeader(pow, block.Header(), parent, true)
+		return core.ValidateHeader(pow, block.Header(), parent, true, false)
 	}
 	heighter := func() uint64 {
 		return manager.chainman.CurrentBlock().NumberU64()
diff --git a/miner/worker.go b/miner/worker.go
index 535ce5144..d8139fc07 100644
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -278,7 +278,7 @@ func (self *worker) wait() {
 					glog.V(logger.Error).Infoln("Invalid block found during mining")
 					continue
 				}
-				if err := core.ValidateHeader(self.eth.BlockProcessor().Pow, block.Header(), parent, true); err != nil && err != core.BlockFutureErr {
+				if err := core.ValidateHeader(self.eth.BlockProcessor().Pow, block.Header(), parent, true, false); err != nil && err != core.BlockFutureErr {
 					glog.V(logger.Error).Infoln("Invalid header on mined block:", err)
 					continue
 				}
@@ -431,8 +431,8 @@ func (self *worker) commitNewWork() {
 	tstart := time.Now()
 	parent := self.chain.CurrentBlock()
 	tstamp := tstart.Unix()
-	if tstamp <= int64(parent.Time()) {
-		tstamp = int64(parent.Time()) + 1
+	if parent.Time().Cmp(new(big.Int).SetInt64(tstamp)) >= 0 {
+		tstamp = parent.Time().Int64() + 1
 	}
 	// this will ensure we're not going off too far in the future
 	if now := time.Now().Unix(); tstamp > now+4 {
@@ -445,12 +445,12 @@ func (self *worker) commitNewWork() {
 	header := &types.Header{
 		ParentHash: parent.Hash(),
 		Number:     num.Add(num, common.Big1),
-		Difficulty: core.CalcDifficulty(uint64(tstamp), parent.Time(), parent.Number(), parent.Difficulty()),
+		Difficulty: core.CalcDifficulty(uint64(tstamp), parent.Time().Uint64(), parent.Number(), parent.Difficulty()),
 		GasLimit:   core.CalcGasLimit(parent),
 		GasUsed:    new(big.Int),
 		Coinbase:   self.coinbase,
 		Extra:      self.extra,
-		Time:       uint64(tstamp),
+		Time:       big.NewInt(tstamp),
 	}
 
 	previous := self.current
diff --git a/tests/block_test.go b/tests/block_test.go
index f42b474b7..b0db5fe56 100644
--- a/tests/block_test.go
+++ b/tests/block_test.go
@@ -35,6 +35,13 @@ func TestBcUncleHeaderValidityTests(t *testing.T) {
 	}
 }
 
+func TestBcUncleTests(t *testing.T) {
+	err := RunBlockTest(filepath.Join(blockTestDir, "bcUncleTest.json"), BlockSkipTests)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
 func TestBcInvalidHeaderTests(t *testing.T) {
 	err := RunBlockTest(filepath.Join(blockTestDir, "bcInvalidHeaderTest.json"), BlockSkipTests)
 	if err != nil {
diff --git a/tests/block_test_util.go b/tests/block_test_util.go
index 033b17008..467b8aed8 100644
--- a/tests/block_test_util.go
+++ b/tests/block_test_util.go
@@ -365,8 +365,8 @@ func (s *BlockTest) validateBlockHeader(h *btHeader, h2 *types.Header) error {
 		return fmt.Errorf("GasUsed: expected: %v, decoded: %v", expectedGasUsed, h2.GasUsed)
 	}
 
-	expectedTimestamp := mustConvertUint(h.Timestamp, 16)
-	if expectedTimestamp != h2.Time {
+	expectedTimestamp := mustConvertBigInt(h.Timestamp, 16)
+	if expectedTimestamp.Cmp(h2.Time) != 0 {
 		return fmt.Errorf("Timestamp: expected: %v, decoded: %v", expectedTimestamp, h2.Time)
 	}
 
@@ -461,7 +461,7 @@ func mustConvertHeader(in btHeader) *types.Header {
 		GasUsed:     mustConvertBigInt(in.GasUsed, 16),
 		GasLimit:    mustConvertBigInt(in.GasLimit, 16),
 		Difficulty:  mustConvertBigInt(in.Difficulty, 16),
-		Time:        mustConvertUint(in.Timestamp, 16),
+		Time:        mustConvertBigInt(in.Timestamp, 16),
 		Nonce:       types.EncodeNonce(mustConvertUint(in.Nonce, 16)),
 	}
 	return header
diff --git a/tests/files/BlockchainTests/bcUncleTest.json b/tests/files/BlockchainTests/bcUncleTest.json
index bd6326a88..0d0e83c0c 100755
--- a/tests/files/BlockchainTests/bcUncleTest.json
+++ b/tests/files/BlockchainTests/bcUncleTest.json
@@ -4543,5 +4543,318 @@
                 }
             }
         }
+    },
+    "uncleTimestampTooBig" : {
+        "blocks" : [
+            {
+                "blockHeader" : {
+                    "bloom" : "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+                    "coinbase" : "8888f1f195afa192cfee860698584c030f4c9db1",
+                    "difficulty" : "0x020000",
+                    "extraData" : "0x",
+                    "gasLimit" : "0x2fefd8",
+                    "gasUsed" : "0x5208",
+                    "hash" : "6bd328a10bb674cc758bd1bccb8afb584808766434c28b85580b422c75d4130e",
+                    "mixHash" : "fefce638471ab6b66b1f1423ae574a99a6b2137229fe1846c508554d718d2bc1",
+                    "nonce" : "f8cf2912afdd244d",
+                    "number" : "0x01",
+                    "parentHash" : "b964d0b68e5a3c7265e4087dc2a8aaf599f06b6d6c1316a1b1b6475587f569e2",
+                    "receiptTrie" : "e9244cf7503b79c03d3a099e07a80d2dbc77bb0b502d8a89d51ac0d68dd31313",
+                    "stateRoot" : "cb52de543653d86ccd13ba3ddf8b052525b04231c6884a4db3188a184681d878",
+                    "timestamp" : "0x55d9d69f",
+                    "transactionsTrie" : "5c9151c2413d1cd25c51ffb4ac38948acc1359bf08c6b49f283660e9bcf0f516",
+                    "uncleHash" : "1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"
+                },
+                "rlp" : "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",
+                "transactions" : [
+                    {
+                        "data" : "0x",
+                        "gasLimit" : "0x04cb2f",
+                        "gasPrice" : "0x01",
+                        "nonce" : "0x00",
+                        "r" : "0x77c7cd36820c71821c1aed59de46e70e701c4a8dd89c9ba508ab722210f60da8",
+                        "s" : "0x3f29825d40c7c3f7bff3ca69267e0f3fb74b2d18b8c2c4e3c135b5d3b06e288d",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "v" : "0x1b",
+                        "value" : "0x0a"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "blockHeader" : {
+                    "bloom" : "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+                    "coinbase" : "8888f1f195afa192cfee860698584c030f4c9db1",
+                    "difficulty" : "0x020040",
+                    "extraData" : "0x",
+                    "gasLimit" : "0x2fefd8",
+                    "gasUsed" : "0x5208",
+                    "hash" : "4c179927c9b9897464c7133033b412c9b66ee2bb1fa4a4b2595a6006d4081e3f",
+                    "mixHash" : "3449cf46635bab4ae7121dcd145e6ca12ac4337f79e88354c41bff1c48335b48",
+                    "nonce" : "4376da5cd48ffb68",
+                    "number" : "0x02",
+                    "parentHash" : "6bd328a10bb674cc758bd1bccb8afb584808766434c28b85580b422c75d4130e",
+                    "receiptTrie" : "5ea1a8b24652fed0ecab4738edd9211891eb8c4353c345973b78a02cc0f32f6b",
+                    "stateRoot" : "e7e4760f75476ec7f51869d8bdce5c693058fd5a95c77ea9c0bf7ced1e50d70e",
+                    "timestamp" : "0x55d9d6a1",
+                    "transactionsTrie" : "c673e076264c4669a5c2e479f1757b78e42511efe33b5fd2c0a23b929c7f87f5",
+                    "uncleHash" : "1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"
+                },
+                "rlp" : "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",
+                "transactions" : [
+                    {
+                        "data" : "0x",
+                        "gasLimit" : "0x04cb2f",
+                        "gasPrice" : "0x01",
+                        "nonce" : "0x01",
+                        "r" : "0x33c86e64d708c97c6b135cadff79dbf45985aa0b53694789e90d15f756765f23",
+                        "s" : "0x1d0f8caa2a16405148c9d85581be5814960010f3cba938b5501590cea1f7cf",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "v" : "0x1b",
+                        "value" : "0x0a"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "rlp" : "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"
+            }
+        ],
+        "genesisBlockHeader" : {
+            "bloom" : "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+            "coinbase" : "8888f1f195afa192cfee860698584c030f4c9db1",
+            "difficulty" : "0x020000",
+            "extraData" : "0x42",
+            "gasLimit" : "0x2fefd8",
+            "gasUsed" : "0x00",
+            "hash" : "b964d0b68e5a3c7265e4087dc2a8aaf599f06b6d6c1316a1b1b6475587f569e2",
+            "mixHash" : "b65f3c17c458ce015c087c3e4c0ffeeb010bf648a1faa2585c674d81ea7dcdfd",
+            "nonce" : "0b2ec3394d2421e3",
+            "number" : "0x00",
+            "parentHash" : "0000000000000000000000000000000000000000000000000000000000000000",
+            "receiptTrie" : "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+            "stateRoot" : "7dba07d6b448a186e9612e5f737d1c909dce473e53199901a302c00646d523c1",
+            "timestamp" : "0x54c98c81",
+            "transactionsTrie" : "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+            "uncleHash" : "1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"
+        },
+        "genesisRLP" : "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",
+        "lastblockhash" : "4c179927c9b9897464c7133033b412c9b66ee2bb1fa4a4b2595a6006d4081e3f",
+        "postState" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "0x14",
+                "code" : "0x",
+                "nonce" : "0x00",
+                "storage" : {
+                }
+            },
+            "8888f1f195afa192cfee860698584c030f4c9db1" : {
+                "balance" : "0x8ac7230489e8a410",
+                "code" : "0x",
+                "nonce" : "0x00",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "0x09184e71fbdc",
+                "code" : "0x",
+                "nonce" : "0x02",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "0x09184e72a000",
+                "code" : "0x",
+                "nonce" : "0x00",
+                "storage" : {
+                }
+            }
+        }
+    },
+    "uncleTimestampMaxUint256" : {
+        "blocks" : [
+            {
+                "blockHeader" : {
+                    "bloom" : "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+                    "coinbase" : "8888f1f195afa192cfee860698584c030f4c9db1",
+                    "difficulty" : "0x020000",
+                    "extraData" : "0x",
+                    "gasLimit" : "0x2fefd8",
+                    "gasUsed" : "0x5208",
+                    "hash" : "19c900975f94fd78dc12ad13740200fbe0a2eba43fd070bedc65588b0c95438a",
+                    "mixHash" : "4296af28ea723598c959f1cabc6f01fa0c75d126cfde89f13ccd9debcf3079c3",
+                    "nonce" : "3213b3fd7789f5d5",
+                    "number" : "0x01",
+                    "parentHash" : "e688d736f1307c6f97b6777381b30556137b9d4ca5c43fbd5b30d6b5df315264",
+                    "receiptTrie" : "e9244cf7503b79c03d3a099e07a80d2dbc77bb0b502d8a89d51ac0d68dd31313",
+                    "stateRoot" : "cb52de543653d86ccd13ba3ddf8b052525b04231c6884a4db3188a184681d878",
+                    "timestamp" : "0x55d9c571",
+                    "transactionsTrie" : "5c9151c2413d1cd25c51ffb4ac38948acc1359bf08c6b49f283660e9bcf0f516",
+                    "uncleHash" : "1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"
+                },
+                "rlp" : "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",
+                "transactions" : [
+                    {
+                        "data" : "0x",
+                        "gasLimit" : "0x04cb2f",
+                        "gasPrice" : "0x01",
+                        "nonce" : "0x00",
+                        "r" : "0x77c7cd36820c71821c1aed59de46e70e701c4a8dd89c9ba508ab722210f60da8",
+                        "s" : "0x3f29825d40c7c3f7bff3ca69267e0f3fb74b2d18b8c2c4e3c135b5d3b06e288d",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "v" : "0x1b",
+                        "value" : "0x0a"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "blockHeader" : {
+                    "bloom" : "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+                    "coinbase" : "8888f1f195afa192cfee860698584c030f4c9db1",
+                    "difficulty" : "0x020040",
+                    "extraData" : "0x",
+                    "gasLimit" : "0x2fefd8",
+                    "gasUsed" : "0x5208",
+                    "hash" : "04e0807bea4d9766809afba8f4dbf2e5ab4e522aa4570bb915381c6593530e89",
+                    "mixHash" : "782e9bf4a3427dee8cf2494f966830dd04a217eb5cf8769dba0ed6400212264f",
+                    "nonce" : "e83b4878a0b9a46f",
+                    "number" : "0x02",
+                    "parentHash" : "19c900975f94fd78dc12ad13740200fbe0a2eba43fd070bedc65588b0c95438a",
+                    "receiptTrie" : "5ea1a8b24652fed0ecab4738edd9211891eb8c4353c345973b78a02cc0f32f6b",
+                    "stateRoot" : "e7e4760f75476ec7f51869d8bdce5c693058fd5a95c77ea9c0bf7ced1e50d70e",
+                    "timestamp" : "0x55d9c573",
+                    "transactionsTrie" : "c673e076264c4669a5c2e479f1757b78e42511efe33b5fd2c0a23b929c7f87f5",
+                    "uncleHash" : "1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"
+                },
+                "rlp" : "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",
+                "transactions" : [
+                    {
+                        "data" : "0x",
+                        "gasLimit" : "0x04cb2f",
+                        "gasPrice" : "0x01",
+                        "nonce" : "0x01",
+                        "r" : "0x33c86e64d708c97c6b135cadff79dbf45985aa0b53694789e90d15f756765f23",
+                        "s" : "0x1d0f8caa2a16405148c9d85581be5814960010f3cba938b5501590cea1f7cf",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "v" : "0x1b",
+                        "value" : "0x0a"
+                    }
+                ],
+                "uncleHeaders" : [
+                ]
+            },
+            {
+                "blockHeader" : {
+                    "bloom" : "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+                    "coinbase" : "8888f1f195afa192cfee860698584c030f4c9db1",
+                    "difficulty" : "0x020080",
+                    "extraData" : "0x",
+                    "gasLimit" : "0x2fefd8",
+                    "gasUsed" : "0x5208",
+                    "hash" : "eed1b4da708283370856fc76352d68f36d9766b7f366da372e2992ced9a1f663",
+                    "mixHash" : "c250fe02a675a64e068023f48df2662ff2269d970f7689bde287228e200d5401",
+                    "nonce" : "105781dacf8bcf41",
+                    "number" : "0x03",
+                    "parentHash" : "04e0807bea4d9766809afba8f4dbf2e5ab4e522aa4570bb915381c6593530e89",
+                    "receiptTrie" : "4ede0225773c7a517b91994aca65ade45124e7ef4b8be1e6097c9773a11920af",
+                    "stateRoot" : "e9940294a09308406a3d2e09203aed11db40259fac0a25e639ad2b30b82d07de",
+                    "timestamp" : "0x55d9c577",
+                    "transactionsTrie" : "1722b8a91bfc4f5614ce36ee77c7cce6620ab4af36d3c54baa66d7dbeb7bce1a",
+                    "uncleHash" : "1e8797b712282d23d059df15e9082411499795fe2644bdfb35f310c10c78169b"
+                },
+                "rlp" : "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",
+                "transactions" : [
+                    {
+                        "data" : "0x",
+                        "gasLimit" : "0x04cb2f",
+                        "gasPrice" : "0x01",
+                        "nonce" : "0x02",
+                        "r" : "0x15eb1cc916728b9799e55c489857727669afb2986433d5f54cde11faaed9f0ee",
+                        "s" : "0x5d36f6d06c34aae8d0a2a5895c8ba4a17ad46a5fa59f361cb3e7e01a23030e38",
+                        "to" : "095e7baea6a6c7c4c2dfeb977efac326af552d87",
+                        "v" : "0x1c",
+                        "value" : "0x0a"
+                    }
+                ],
+                "uncleHeaders" : [
+                    {
+                        "bloom" : "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+                        "coinbase" : "bcde5374fce5edbc8e2a8697c15331677e6ebf0b",
+                        "difficulty" : "0x020000",
+                        "extraData" : "0x",
+                        "gasLimit" : "0x2fefd8",
+                        "gasUsed" : "0x00",
+                        "hash" : "5264110fedc6f468e9b3c1fead10ee4bdd4957bcb6d193503f8ede6a0d478b95",
+                        "mixHash" : "6868c784ca472bb16eb9b23029965a737713003d0da6c006e4923e400cd783fc",
+                        "nonce" : "d99c24fcd2648302",
+                        "number" : "0x02",
+                        "parentHash" : "19c900975f94fd78dc12ad13740200fbe0a2eba43fd070bedc65588b0c95438a",
+                        "receiptTrie" : "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+                        "stateRoot" : "cb52de543653d86ccd13ba3ddf8b052525b04231c6884a4db3188a184681d878",
+                        "timestamp" : "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
+                        "transactionsTrie" : "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+                        "uncleHash" : "1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"
+                    }
+                ]
+            }
+        ],
+        "genesisBlockHeader" : {
+            "bloom" : "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+            "coinbase" : "8888f1f195afa192cfee860698584c030f4c9db1",
+            "difficulty" : "0x020000",
+            "extraData" : "0x42",
+            "gasLimit" : "0x2fefd8",
+            "gasUsed" : "0x00",
+            "hash" : "e688d736f1307c6f97b6777381b30556137b9d4ca5c43fbd5b30d6b5df315264",
+            "mixHash" : "f35b4695bdfef02db19d255636bec7911667c7056df2b2f475053ea78dd1b0ff",
+            "nonce" : "5333c47f947590d8",
+            "number" : "0x00",
+            "parentHash" : "0000000000000000000000000000000000000000000000000000000000000000",
+            "receiptTrie" : "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+            "stateRoot" : "7dba07d6b448a186e9612e5f737d1c909dce473e53199901a302c00646d523c1",
+            "timestamp" : "0x54c98c81",
+            "transactionsTrie" : "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
+            "uncleHash" : "1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347"
+        },
+        "genesisRLP" : "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",
+        "lastblockhash" : "eed1b4da708283370856fc76352d68f36d9766b7f366da372e2992ced9a1f663",
+        "postState" : {
+            "095e7baea6a6c7c4c2dfeb977efac326af552d87" : {
+                "balance" : "0x14",
+                "code" : "0x",
+                "nonce" : "0x00",
+                "storage" : {
+                }
+            },
+            "8888f1f195afa192cfee860698584c030f4c9db1" : {
+                "balance" : "0x8ac7230489e8a410",
+                "code" : "0x",
+                "nonce" : "0x00",
+                "storage" : {
+                }
+            },
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "0x09184e71fbdc",
+                "code" : "0x",
+                "nonce" : "0x02",
+                "storage" : {
+                }
+            }
+        },
+        "pre" : {
+            "a94f5374fce5edbc8e2a8697c15331677e6ebf0b" : {
+                "balance" : "0x09184e72a000",
+                "code" : "0x",
+                "nonce" : "0x00",
+                "storage" : {
+                }
+            }
+        }
     }
-}
\ No newline at end of file
+}
diff --git a/tests/util.go b/tests/util.go
index 6ee1a42db..53eeebf2a 100644
--- a/tests/util.go
+++ b/tests/util.go
@@ -136,7 +136,7 @@ type Env struct {
 	coinbase common.Address
 
 	number     *big.Int
-	time       uint64
+	time       *big.Int
 	difficulty *big.Int
 	gasLimit   *big.Int
 
@@ -166,7 +166,7 @@ func NewEnvFromMap(state *state.StateDB, envValues map[string]string, exeValues
 	//env.parent = common.Hex2Bytes(envValues["previousHash"])
 	env.coinbase = common.HexToAddress(envValues["currentCoinbase"])
 	env.number = common.Big(envValues["currentNumber"])
-	env.time = common.Big(envValues["currentTimestamp"]).Uint64()
+	env.time = common.Big(envValues["currentTimestamp"])
 	env.difficulty = common.Big(envValues["currentDifficulty"])
 	env.gasLimit = common.Big(envValues["currentGasLimit"])
 	env.Gas = new(big.Int)
@@ -179,7 +179,7 @@ func (self *Env) BlockNumber() *big.Int  { return self.number }
 
 //func (self *Env) PrevHash() []byte      { return self.parent }
 func (self *Env) Coinbase() common.Address { return self.coinbase }
-func (self *Env) Time() uint64             { return self.time }
+func (self *Env) Time() *big.Int           { return self.time }
 func (self *Env) Difficulty() *big.Int     { return self.difficulty }
 func (self *Env) State() *state.StateDB    { return self.state }
 func (self *Env) GasLimit() *big.Int       { return self.gasLimit }
diff --git a/xeth/types.go b/xeth/types.go
index ad5101d61..218c8dc7c 100644
--- a/xeth/types.go
+++ b/xeth/types.go
@@ -19,6 +19,7 @@ package xeth
 import (
 	"bytes"
 	"fmt"
+	"math/big"
 	"strings"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -76,7 +77,7 @@ type Block struct {
 	Hash         string       `json:"hash"`
 	Transactions *common.List `json:"transactions"`
 	Uncles       *common.List `json:"uncles"`
-	Time         uint64       `json:"time"`
+	Time         *big.Int     `json:"time"`
 	Coinbase     string       `json:"coinbase"`
 	Name         string       `json:"name"`
 	GasLimit     string       `json:"gasLimit"`