make mc tx work

25 files changed, 297 insertions, 1714 deletions

diff --git a/core/evm.go b/core/evm.go
index ecab8e6..796b312 100644
--- a/core/evm.go
+++ b/core/evm.go
@@ -99,7 +99,7 @@ func CanTransferMC(db vm.StateDB, addr common.Address, to common.Address, coinID
 	}
 	if !db.IsMultiCoin(addr) {
 		err := db.EnableMultiCoin(addr)
-		log.Debug("try to enable MC", "err", err)
+		log.Debug("try to enable MC", "addr", addr.Hex(), "err", err)
 	}
 	if !(db.IsMultiCoin(addr) && db.IsMultiCoin(to)) {
 		// incompatible
@@ -124,8 +124,5 @@ func TransferMultiCoin(db vm.StateDB, sender, recipient common.Address, coinID *
 		return
 	}
 	db.SubBalanceMultiCoin(sender, *coinID, amount)
-	z := &big.Int{}
-	z.Add(amount, big.NewInt(1000000000000000000))
-	log.Info("hi")
-	db.AddBalanceMultiCoin(recipient, *coinID, z)
+	db.AddBalanceMultiCoin(recipient, *coinID, amount)
 }
diff --git a/core/gen_genesis.go b/core/gen_genesis.go
index 05883c0..97175f7 100644
--- a/core/gen_genesis.go
+++ b/core/gen_genesis.go
@@ -15,6 +15,7 @@ import (
 
 var _ = (*genesisSpecMarshaling)(nil)
 
+// MarshalJSON marshals as JSON.
 func (g Genesis) MarshalJSON() ([]byte, error) {
 	type Genesis struct {
 		Config     *params.ChainConfig                         `json:"config"`
@@ -51,6 +52,7 @@ func (g Genesis) MarshalJSON() ([]byte, error) {
 	return json.Marshal(&enc)
 }
 
+// UnmarshalJSON unmarshals from JSON.
 func (g *Genesis) UnmarshalJSON(input []byte) error {
 	type Genesis struct {
 		Config     *params.ChainConfig                         `json:"config"`
diff --git a/core/gen_genesis_account.go b/core/gen_genesis_account.go
index a7ef4a6..b90b658 100644
--- a/core/gen_genesis_account.go
+++ b/core/gen_genesis_account.go
@@ -14,11 +14,13 @@ import (
 
 var _ = (*genesisAccountMarshaling)(nil)
 
+// MarshalJSON marshals as JSON.
 func (g GenesisAccount) MarshalJSON() ([]byte, error) {
 	type GenesisAccount struct {
 		Code       hexutil.Bytes               `json:"code,omitempty"`
 		Storage    map[storageJSON]storageJSON `json:"storage,omitempty"`
 		Balance    *math.HexOrDecimal256       `json:"balance" gencodec:"required"`
+		MCBalance  GenesisMultiCoinBalance     `json:"mcbalance,omitempty"`
 		Nonce      math.HexOrDecimal64         `json:"nonce,omitempty"`
 		PrivateKey hexutil.Bytes               `json:"secretKey,omitempty"`
 	}
@@ -31,16 +33,19 @@ func (g GenesisAccount) MarshalJSON() ([]byte, error) {
 		}
 	}
 	enc.Balance = (*math.HexOrDecimal256)(g.Balance)
+	enc.MCBalance = g.MCBalance
 	enc.Nonce = math.HexOrDecimal64(g.Nonce)
 	enc.PrivateKey = g.PrivateKey
 	return json.Marshal(&enc)
 }
 
+// UnmarshalJSON unmarshals from JSON.
 func (g *GenesisAccount) UnmarshalJSON(input []byte) error {
 	type GenesisAccount struct {
 		Code       *hexutil.Bytes              `json:"code,omitempty"`
 		Storage    map[storageJSON]storageJSON `json:"storage,omitempty"`
 		Balance    *math.HexOrDecimal256       `json:"balance" gencodec:"required"`
+		MCBalance  *GenesisMultiCoinBalance    `json:"mcbalance,omitempty"`
 		Nonce      *math.HexOrDecimal64        `json:"nonce,omitempty"`
 		PrivateKey *hexutil.Bytes              `json:"secretKey,omitempty"`
 	}
@@ -61,6 +66,9 @@ func (g *GenesisAccount) UnmarshalJSON(input []byte) error {
 		return errors.New("missing required field 'balance' for GenesisAccount")
 	}
 	g.Balance = (*big.Int)(dec.Balance)
+	if dec.MCBalance != nil {
+		g.MCBalance = *dec.MCBalance
+	}
 	if dec.Nonce != nil {
 		g.Nonce = uint64(*dec.Nonce)
 	}
diff --git a/core/genesis.go b/core/genesis.go
index 347beb3..ef490bf 100644
--- a/core/genesis.go
+++ b/core/genesis.go
@@ -78,11 +78,14 @@ func (ga *GenesisAlloc) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+type GenesisMultiCoinBalance map[common.Hash]*big.Int
+
 // GenesisAccount is an account in the state of the genesis block.
 type GenesisAccount struct {
 	Code       []byte                      `json:"code,omitempty"`
 	Storage    map[common.Hash]common.Hash `json:"storage,omitempty"`
 	Balance    *big.Int                    `json:"balance" gencodec:"required"`
+	MCBalance  GenesisMultiCoinBalance     `json:"mcbalance,omitempty"`
 	Nonce      uint64                      `json:"nonce,omitempty"`
 	PrivateKey []byte                      `json:"secretKey,omitempty"` // for tests
 }
@@ -261,6 +264,12 @@ func (g *Genesis) ToBlock(db ethdb.Database) *types.Block {
 		for key, value := range account.Storage {
 			statedb.SetState(addr, key, value)
 		}
+		if account.MCBalance != nil {
+			statedb.ForceEnableMultiCoin(addr)
+			for coinID, value := range account.MCBalance {
+				statedb.AddBalanceMultiCoin(addr, coinID, value)
+			}
+		}
 	}
 	root := statedb.IntermediateRoot(false)
 	head := &types.Header{
diff --git a/core/state/statedb.go b/core/state/statedb.go
index 12deebe..1d3207d 100644
--- a/core/state/statedb.go
+++ b/core/state/statedb.go
@@ -248,6 +248,11 @@ func (self *StateDB) EnableMultiCoin(addr common.Address) error {
 	return nil
 }
 
+func (self *StateDB) ForceEnableMultiCoin(addr common.Address) {
+	stateObject := self.GetOrNewStateObject(addr)
+	stateObject.EnableMultiCoin()
+}
+
 func (self *StateDB) IsMultiCoin(addr common.Address) bool {
 	stateObject := self.getStateObject(addr)
 	if stateObject != nil {
diff --git a/core/tx_pool.go b/core/tx_pool.go
index 1acd488..5b2a3c0 100644
--- a/core/tx_pool.go
+++ b/core/tx_pool.go
@@ -528,7 +528,6 @@ func (pool *TxPool) validateTx(tx *types.Transaction, local bool) error {
 	}
 	// Ensure the transaction doesn't exceed the current block limit gas.
 	if pool.currentMaxGas < tx.Gas() {
-		fmt.Println(pool.currentMaxGas, tx.Gas())
 		return ErrGasLimit
 	}
 	// Make sure the transaction is signed properly
diff --git a/core/types/gen_tx_json.go b/core/types/gen_tx_json.go
index 0410632..dd0d069 100644
--- a/core/types/gen_tx_json.go
+++ b/core/types/gen_tx_json.go
@@ -21,6 +21,8 @@ func (t txdata) MarshalJSON() ([]byte, error) {
 		GasLimit     hexutil.Uint64  `json:"gas"      gencodec:"required"`
 		Recipient    *common.Address `json:"to"       rlp:"nil"`
 		Amount       *hexutil.Big    `json:"value"    gencodec:"required"`
+		CoinID       *common.Hash    `json:"coinid"   rlp:"nil"`
+		Amount2      *hexutil.Big    `json:"value2"   rlp:"nil"`
 		Payload      hexutil.Bytes   `json:"input"    gencodec:"required"`
 		V            *hexutil.Big    `json:"v" gencodec:"required"`
 		R            *hexutil.Big    `json:"r" gencodec:"required"`
@@ -33,6 +35,8 @@ func (t txdata) MarshalJSON() ([]byte, error) {
 	enc.GasLimit = hexutil.Uint64(t.GasLimit)
 	enc.Recipient = t.Recipient
 	enc.Amount = (*hexutil.Big)(t.Amount)
+	enc.CoinID = t.CoinID
+	enc.Amount2 = (*hexutil.Big)(t.Amount2)
 	enc.Payload = t.Payload
 	enc.V = (*hexutil.Big)(t.V)
 	enc.R = (*hexutil.Big)(t.R)
@@ -49,6 +53,8 @@ func (t *txdata) UnmarshalJSON(input []byte) error {
 		GasLimit     *hexutil.Uint64 `json:"gas"      gencodec:"required"`
 		Recipient    *common.Address `json:"to"       rlp:"nil"`
 		Amount       *hexutil.Big    `json:"value"    gencodec:"required"`
+		CoinID       *common.Hash    `json:"coinid"   rlp:"nil"`
+		Amount2      *hexutil.Big    `json:"value2"   rlp:"nil"`
 		Payload      *hexutil.Bytes  `json:"input"    gencodec:"required"`
 		V            *hexutil.Big    `json:"v" gencodec:"required"`
 		R            *hexutil.Big    `json:"r" gencodec:"required"`
@@ -78,6 +84,12 @@ func (t *txdata) UnmarshalJSON(input []byte) error {
 		return errors.New("missing required field 'value' for txdata")
 	}
 	t.Amount = (*big.Int)(dec.Amount)
+	if dec.CoinID != nil {
+		t.CoinID = dec.CoinID
+	}
+	if dec.Amount2 != nil {
+		t.Amount2 = (*big.Int)(dec.Amount2)
+	}
 	if dec.Payload == nil {
 		return errors.New("missing required field 'input' for txdata")
 	}
diff --git a/core/types/transaction.go b/core/types/transaction.go
index cf9e61a..858b443 100644
--- a/core/types/transaction.go
+++ b/core/types/transaction.go
@@ -49,8 +49,8 @@ type txdata struct {
 	GasLimit     uint64          `json:"gas"      gencodec:"required"`
 	Recipient    *common.Address `json:"to"       rlp:"nil"` // nil means contract creation
 	Amount       *big.Int        `json:"value"    gencodec:"required"`
-	CoinID       *common.Hash    `json:"coinid" rlp:"-"`
-	Amount2      *big.Int        `json:"value2"`
+	CoinID       *common.Hash    `json:"coinid"   rlp:"nil"`
+	Amount2      *big.Int        `json:"value2"   rlp:"nil"`
 	Payload      []byte          `json:"input"    gencodec:"required"`
 
 	// Signature values
@@ -67,7 +67,7 @@ type txdataMarshaling struct {
 	Price        *hexutil.Big
 	GasLimit     hexutil.Uint64
 	Amount       *hexutil.Big
-	CoinID       *hexutil.Bytes
+	CoinID       *common.Hash
 	Amount2      *hexutil.Big
 	Payload      hexutil.Bytes
 	V            *hexutil.Big
@@ -183,14 +183,14 @@ func (tx *Transaction) UnmarshalJSON(input []byte) error {
 	return nil
 }
 
-func (tx *Transaction) Data() []byte       { return common.CopyBytes(tx.data.Payload) }
-func (tx *Transaction) Gas() uint64        { return tx.data.GasLimit }
-func (tx *Transaction) GasPrice() *big.Int { return new(big.Int).Set(tx.data.Price) }
-func (tx *Transaction) Value() *big.Int    { return new(big.Int).Set(tx.data.Amount) }
-func (tx *Transaction) CoinID() *big.Int   { return big.NewInt(0) }
-func (tx *Transaction) Value2() *big.Int   { return big.NewInt(0) }
-func (tx *Transaction) Nonce() uint64      { return tx.data.AccountNonce }
-func (tx *Transaction) CheckNonce() bool   { return true }
+func (tx *Transaction) Data() []byte         { return common.CopyBytes(tx.data.Payload) }
+func (tx *Transaction) Gas() uint64          { return tx.data.GasLimit }
+func (tx *Transaction) GasPrice() *big.Int   { return new(big.Int).Set(tx.data.Price) }
+func (tx *Transaction) Value() *big.Int      { return new(big.Int).Set(tx.data.Amount) }
+func (tx *Transaction) CoinID() *common.Hash { return tx.data.CoinID }
+func (tx *Transaction) Value2() *big.Int     { return new(big.Int).Set(tx.data.Amount2) }
+func (tx *Transaction) Nonce() uint64        { return tx.data.AccountNonce }
+func (tx *Transaction) CheckNonce() bool     { return true }
 
 // To returns the recipient address of the transaction.
 // It returns nil if the transaction is a contract creation.
diff --git a/core/vm/evm.go b/core/vm/evm.go
index ff3587c..be8b240 100644
--- a/core/vm/evm.go
+++ b/core/vm/evm.go
@@ -17,7 +17,6 @@
 package vm
 
 import (
-	"fmt"
 	"math/big"
 	"sync/atomic"
 	"time"
@@ -260,7 +259,6 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
 
 // This allows the user transfer balance of a specified coinId in addition to a normal Call().
 func (evm *EVM) CallExpert(caller ContractRef, addr common.Address, input []byte, gas uint64, value *big.Int, coinID *common.Hash, value2 *big.Int) (ret []byte, leftOverGas uint64, err error) {
-	fmt.Println("CallExpert")
 	if evm.vmConfig.NoRecursion && evm.depth > 0 {
 		return nil, gas, nil
 	}
diff --git a/eth/backend.go b/eth/backend.go
index ab43558..983909c 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -173,8 +173,6 @@ func New(ctx *node.ServiceContext, config *Config,
 		bcb:            bcb,
 	}
 
-	fmt.Println(eth.config.Genesis.GasLimit)
-
 	bcVersion := rawdb.ReadDatabaseVersion(chainDb)
 	var dbVer = "<nil>"
 	if bcVersion != nil {
diff --git a/eth/gen_config.go b/eth/gen_config.go
index 617a885..d34f0b3 100644
--- a/eth/gen_config.go
+++ b/eth/gen_config.go
@@ -49,6 +49,8 @@ func (c Config) MarshalTOML() (interface{}, error) {
 		RPCGasCap               *big.Int                       `toml:",omitempty"`
 		Checkpoint              *params.TrustedCheckpoint      `toml:",omitempty"`
 		CheckpointOracle        *params.CheckpointOracleConfig `toml:",omitempty"`
+		OverrideIstanbul        *big.Int
+		ManualCanonical         bool
 	}
 	var enc Config
 	enc.Genesis = c.Genesis
@@ -82,6 +84,8 @@ func (c Config) MarshalTOML() (interface{}, error) {
 	enc.RPCGasCap = c.RPCGasCap
 	enc.Checkpoint = c.Checkpoint
 	enc.CheckpointOracle = c.CheckpointOracle
+	enc.OverrideIstanbul = c.OverrideIstanbul
+	enc.ManualCanonical = c.ManualCanonical
 	return &enc, nil
 }
 
@@ -119,6 +123,8 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
 		RPCGasCap               *big.Int                       `toml:",omitempty"`
 		Checkpoint              *params.TrustedCheckpoint      `toml:",omitempty"`
 		CheckpointOracle        *params.CheckpointOracleConfig `toml:",omitempty"`
+		OverrideIstanbul        *big.Int
+		ManualCanonical         *bool
 	}
 	var dec Config
 	if err := unmarshal(&dec); err != nil {
@@ -217,5 +223,11 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
 	if dec.CheckpointOracle != nil {
 		c.CheckpointOracle = dec.CheckpointOracle
 	}
+	if dec.OverrideIstanbul != nil {
+		c.OverrideIstanbul = dec.OverrideIstanbul
+	}
+	if dec.ManualCanonical != nil {
+		c.ManualCanonical = *dec.ManualCanonical
+	}
 	return nil
 }
diff --git a/eth/tracers/internal/tracers/assets.go b/eth/tracers/internal/tracers/assets.go
index d0a0bf7..b1930dc 100644
--- a/eth/tracers/internal/tracers/assets.go
+++ b/eth/tracers/internal/tracers/assets.go
@@ -3,7 +3,7 @@
 // 4byte_tracer.js (2.933kB)
 // bigram_tracer.js (1.712kB)
 // call_tracer.js (8.643kB)
-// evmdis_tracer.js (4.194kB)
+// evmdis_tracer.js (4.195kB)
 // noop_tracer.js (1.271kB)
 // opcount_tracer.js (1.372kB)
 // prestate_tracer.js (4.234kB)
@@ -28,7 +28,7 @@ import (
 func bindataRead(data []byte, name string) ([]byte, error) {
 	gz, err := gzip.NewReader(bytes.NewBuffer(data))
 	if err != nil {
-		return nil, fmt.Errorf("read %q: %v", name, err)
+		return nil, fmt.Errorf("read %q: %w", name, err)
 	}
 
 	var buf bytes.Buffer
@@ -36,7 +36,7 @@ func bindataRead(data []byte, name string) ([]byte, error) {
 	clErr := gz.Close()
 
 	if err != nil {
-		return nil, fmt.Errorf("read %q: %v", name, err)
+		return nil, fmt.Errorf("read %q: %w", name, err)
 	}
 	if clErr != nil {
 		return nil, err
@@ -137,7 +137,7 @@ func call_tracerJs() (*asset, error) {
 	return a, nil
 }
 
-var _evmdis_tracerJs = 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+var _evmdis_tracerJs = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\xac\x57\xdf\x6f\xda\xca\x12\x7e\x86\xbf\x62\x94\x27\x50\x29\x60\x63\x08\x38\x27\x47\xe2\xa6\xf4\x1c\xae\xd2\x24\x02\x72\x8f\x2a\x94\x87\x05\xc6\xb0\xaa\xf1\x5a\xbb\x6b\x72\xb8\x55\xfe\xf7\xab\xd9\x59\x03\xf9\x75\xdb\x4a\xa7\x0f\x3b\xb5\x77\xbe\x6f\xbe\x9d\x19\xcf\x92\x56\x0b\xae\x54\xbe\xd7\x72\xbd\xb1\x10\xb6\x83\x73\x98\x6d\x10\xd6\xea\x23\xda\x0d\x6a\x2c\xb6\x30\x2c\xec\x46\x69\x53\x6d\xb5\x60\xb6\x91\x06\x12\x99\x22\x48\x03\xb9\xd0\x16\x54\x02\xf6\x85\x7f\x2a\x17\x5a\xe8\x7d\xb3\xda\x6a\x31\xe6\xcd\x6d\x62\x48\x34\x22\x18\x95\xd8\x47\xa1\x31\x86\xbd\x2a\x60\x29\x32\xd0\xb8\x92\xc6\x6a\xb9\x28\x2c\x82\xb4\x20\xb2\x55\x4b\x69\xd8\xaa\x95\x4c\xf6\x44\x29\x2d\x14\xd9\x0a\xb5\x0b\x6d\x51\x6f\x4d\xa9\xe3\x8f\x9b\x7b\xb8\x46\x63\x50\xc3\x1f\x98\xa1\x16\x29\xdc\x15\x8b\x54\x2e\xe1\x5a\x2e\x31\x33\x08\xc2\x40\x4e\x6f\xcc\x06\x57\xb0\x70\x74\x04\xfc\x4c\x52\xa6\x5e\x0a\x7c\x56\x45\xb6\x12\x56\xaa\xac\x01\x28\x49\x39\xec\x50\x1b\xa9\x32\xe8\x94\xa1\x3c\x61\x03\x94\x26\x92\x9a\xb0\x74\x00\x0d\x2a\x27\x5c\x1d\x44\xb6\x87\x54\xd8\x23\xf4\x27\x12\x72\x3c\xf7\x0a\x64\xe6\xc2\x6c\x54\x8e\x60\x37\xc2\xd2\xa9\x1f\x65\x9a\xc2\x02\xa1\x30\x98\x14\x69\x83\xd8\x16\x85\x85\xbf\xc6\xb3\x3f\x6f\xef\x67\x30\xbc\xf9\x0a\x7f\x0d\x27\x93\xe1\xcd\xec\xeb\x05\x3c\x4a\xbb\x51\x85\x05\xdc\x21\x53\xc9\x6d\x9e\x4a\x5c\xc1\xa3\xd0\x5a\x64\x76\x0f\x2a\x21\x86\x2f\xa3\xc9\xd5\x9f\xc3\x9b\xd9\xf0\x5f\xe3\xeb\xf1\xec\x2b\x28\x0d\x9f\xc7\xb3\x9b\xd1\x74\x0a\x9f\x6f\x27\x30\x84\xbb\xe1\x64\x36\xbe\xba\xbf\x1e\x4e\xe0\xee\x7e\x72\x77\x3b\x1d\x35\x61\x8a\xa4\x0a\x09\xff\xe3\x9c\x27\xae\x7a\x1a\x61\x85\x56\xc8\xd4\x94\x99\xf8\xaa\x0a\x30\x1b\x55\xa4\x2b\xd8\x88\x1d\x82\xc6\x25\xca\x1d\xae\x40\xc0\x52\xe5\xfb\x9f\x2e\x2a\x71\x89\x54\x65\x6b\x77\xe6\x77\x1b\x12\xc6\x09\x64\xca\x36\xc0\x20\xc2\x6f\x1b\x6b\xf3\xb8\xd5\x7a\x7c\x7c\x6c\xae\xb3\xa2\xa9\xf4\xba\x95\x32\x9d\x69\xfd\xde\xac\x12\x27\xee\xb6\x2b\x69\x66\x5a\x2c\x51\x83\x46\x5b\xe8\xcc\x80\x29\x92\x44\x2e\x25\x66\x16\x64\x96\x28\xbd\x75\x7d\x02\x89\x56\x5b\x10\x60\xc9\x19\xac\x82\x1c\x35\x6d\x7a\x8e\x8f\xc6\xee\x53\xa7\x73\x25\x8d\x30\x06\xb7\x8b\x74\xdf\xac\x7e\xaf\x56\x8c\x15\xcb\x6f\x31\xcc\xbf\xab\xdc\xc4\x30\x7f\x78\x7a\x68\x54\xab\x95\x2c\x2f\xcc\x06\x4d\x0c\xdf\xdb\x31\xb4\x1b\x10\xc4\x10\x34\x20\x74\x6b\xc7\xad\x91\x5b\xbb\x6e\xed\xb9\xf5\xdc\xad\x7d\xb7\x0e\xdc\x1a\xb4\xd9\x30\x3a\x60\xb7\x80\xfd\x02\x76\x0c\xd8\x33\x64\xcf\xd0\xc7\xe1\x40\x21\x47\x0a\x39\x54\xc8\xb1\x42\x66\xe9\xb0\x4b\xc4\x2c\x11\xb3\x74\x99\xa5\xcb\x2c\x5d\x76\xe9\x32\x4b\xd7\x0b\xee\xba\xf3\x74\x99\xa5\x7b\xce\x4f\xcc\xd2\x65\x96\x1e\x1f\xb9\xc7\x80\x9e\x3f\x22\x03\x7a\x2c\xbe\xc7\x80\x1e\x03\xfa\x0c\xe8\x73\xd8\x7e\xc8\x4f\x1d\x36\xcc\xd2\xe7\xb0\xfd\x1e\x1b\x0e\xdb\x67\x96\x3e\xb3\x0c\x58\xfc\x20\x70\x7b\x03\x8e\x37\xe0\x78\x03\x9f\xd5\x32\xad\x3e\xaf\x6d\x9f\xd8\x76\xe8\x6d\xc7\xdb\xc8\xdb\xae\xb7\x3e\xf3\x6d\x9f\xfa\xb6\xcf\x7d\xdb\xf3\x1d\xea\xe4\xf9\x02\xcf\x17\x78\xbe\xc0\xf3\x05\x9e\xaf\xac\x64\x59\xca\xb2\x96\xbe\x98\x81\xaf\x66\xe0\xcb\x19\xf8\x7a\x06\xbe\xa0\x81\xaf\x68\xe0\x4b\x1a\xf8\x9a\x06\xa1\xe7\x0b\xfb\x31\x84\x64\x07\x31\x74\x1a\x10\x74\xda\x31\x44\x64\x83\x18\xba\x64\xc3\x18\x7a\x64\x3b\x31\x9c\x93\x8d\x62\xe8\x93\xed\xc6\x30\x20\x4b\x7c\xd4\xb5\x1d\x22\x24\xc6\x0e\x29\x24\xca\x0e\x49\x24\xce\x88\x34\x12\x69\x44\x22\x89\x35\x22\x95\x44\x1b\x91\x4c\xe2\x8d\x22\xd6\x11\x75\x59\x47\xd4\x63\x1d\xd1\x39\xeb\xa0\xee\x73\x80\x01\xeb\xa0\xfe\x23\x1d\xd4\x80\xa4\xc3\x75\x20\xe9\x70\x3d\x48\x3a\x5c\x17\x12\x25\xf5\xa1\xd3\xe1\x3a\x91\x48\xa9\x17\x9d\x0e\xd7\x8d\x44\xeb\xfa\x91\x78\x7d\x47\x06\xbd\xc0\xdb\xd0\xdb\x8e\xb7\x91\xb3\x61\xe4\xbf\xa2\xc8\x7f\x46\x91\xff\x8e\xa2\x8e\xdf\xf7\x7e\xee\x23\x78\xa2\xef\xbc\xd5\x02\x8d\xa6\x48\x2d\x4d\x7f\x99\xed\xd4\x37\x9a\xcf\x1b\xcc\x40\xa4\xa9\x1b\x64\x2a\x5f\xaa\x15\x1a\x1e\x90\x0b\xc4\x0c\xa4\x45\x2d\xe8\x86\x50\x3b\xd4\x74\x39\x96\xa3\xc9\xd1\x11\x26\x91\x99\x48\x4b\x62\x3f\x44\x69\x30\xc9\x6c\xdd\xac\x56\xf8\x7d\x0c\x49\x91\x2d\x69\x74\xd5\xea\xf0\xdd\x53\x80\xdd\x48\xd3\x74\x23\x69\xde\x7e\x68\xaa\xdc\x5c\x40\xa9\x33\x11\x6f\xc9\x24\x6a\xb1\xb4\x85\x48\x01\xff\xc6\x65\xe1\x66\xa1\x4a\x40\x64\x5e\x39\x24\x3c\xf1\x2b\x0e\x7f\x12\x35\x55\xeb\x06\xac\x16\x14\xbc\x0c\x61\x2c\xe6\xa7\x11\xe8\xde\xc0\x1d\xea\x7d\xc9\xe5\xee\x41\x0a\xf9\x9f\x2f\x3e\x1c\x12\x35\xe1\xde\x64\xae\x56\x2a\x3b\xa1\x21\xd1\x62\x8b\x70\x79\x7a\xba\xe3\x7f\x9b\x29\x66\x6b\xbb\x81\x8f\x10\x3c\x5c\x54\x3d\x02\xb5\x56\x1a\x2e\x21\x55\xeb\xe6\x1a\xed\x88\x1e\x6b\xf5\x8b\x6a\xa5\x22\x13\xa8\xb9\x5d\xa6\xaf\x38\xee\xf9\x99\x7b\x75\xf6\x00\x97\x0c\x25\xcf\x27\xc0\xd4\x20\x10\xc0\xd3\x7c\xc2\xdc\x6e\x6a\x75\xb8\x3c\x95\xe2\xe3\x7b\x3a\x95\xd3\xa5\x02\x97\xfc\x54\x51\x79\x0c\xf4\x8f\x08\x54\xde\xb4\xea\xa6\xd8\x2e\x50\xd7\xea\x0d\xb7\xbd\x22\x42\x88\xe1\x39\x3f\xef\x95\x65\x9e\x3f\xb8\xe7\x27\x92\xe4\xd4\x3b\xc5\x54\xdb\xf2\xe4\xbf\x43\xdb\x47\x77\x67\xcf\x35\xee\x54\x0e\x97\x70\x70\x9c\xbf\x82\x70\xb2\x08\x91\x28\x5d\x23\x94\x84\x4b\x68\x5f\x80\x84\xdf\xf8\x6c\xfe\x06\x9b\x33\x5b\x53\xe5\x0f\x17\x20\x3f\x7c\xa8\x3b\x50\xc5\xbf\x65\x8d\x4d\x72\x75\x39\xe2\x84\xe4\x88\xdf\x6a\xb2\xde\xb4\x6a\x6a\xb5\xcc\xd6\xb5\xa0\x57\x77\xb9\xaf\x3c\xd1\x62\x1e\xa5\x5d\xb2\xbf\x4b\x89\x77\xaa\xfb\x33\x2c\x85\x41\x38\xbb\x1a\x5e\x5f\x9f\xc5\x70\x7c\xb8\xba\xfd\x34\x3a\x8b\x0f\x87\x94\x99\xb1\xf4\xfb\x95\x4b\x7c\x12\xb7\x53\x6f\xee\x44\x5a\xe0\x6d\xc2\xf5\x3e\xb8\xcb\xff\xe2\x6b\xef\xe8\x95\x37\x17\x70\x7e\xb6\x16\xc6\xb5\xc3\x0b\x40\xfb\x5d\x80\x55\x6f\xf9\x07\xcf\xd3\xf0\x1c\xe2\x98\xde\x42\x85\x27\xa8\x17\x18\x99\xe5\x85\x3d\x60\xb6\xb8\x55\x7a\xdf\x34\xf4\xcb\xa7\xe6\x73\xd2\x38\x24\xe7\x83\x3f\xf7\x0b\x8a\x63\xaf\x67\x45\x9a\x3e\xdf\xe3\x39\xf2\xce\xa6\xca\x39\x27\x73\xdf\x3b\x27\x1f\x81\x6b\x01\xf6\xf3\xd1\x16\x1a\xc5\xb7\x8b\x63\x45\x3f\x8d\xae\x47\x7f\x0c\x67\xa3\x67\x95\x9d\xce\x86\xb3\xf1\x15\xbf\xfa\x71\x6d\xc3\x5f\xaa\xed\xeb\x4e\x38\x9e\xc3\x1d\x03\x5e\xb5\xe0\xdb\x2d\xf0\xcb\x3d\xf0\x4b\x4d\x70\x2c\xe8\x3f\x51\xd1\xff\x5f\xd2\x7f\xba\xa6\x93\xd1\xec\x7e\x72\x73\x52\x3a\xfa\x7b\xe5\x27\xbe\x19\xef\xfa\x76\xdd\x82\x57\xee\x3c\xbe\xfc\x15\xf7\x46\xe3\xab\xc2\x36\x5c\xe8\x0f\x25\xeb\x3b\x7a\xa7\xb3\xdb\xbb\x63\xef\xdd\x8f\xaf\xc6\x87\xa1\xf2\xa3\x18\xed\x06\xb4\xdf\x61\xfd\xf7\xfd\x97\xbb\x4f\xa3\xe9\xcc\x33\x95\x99\xcd\x97\x87\xcf\x74\x8d\xf6\xee\xaa\x76\x32\x03\x65\x52\xce\x3f\x69\xee\x28\xcd\xe5\xf4\x3b\xa0\x53\xcc\x0e\xf0\x67\x37\x07\x7c\x84\xf6\xdf\x5d\x3c\x72\x1d\x87\xfb\xcb\x82\xf9\x1b\xcc\x11\x1f\xeb\xfa\xec\x22\x3d\x9e\xee\xf9\x1d\xc4\xf8\x6a\xe5\xa9\xfa\x54\xfd\x5f\x00\x00\x00\xff\xff\xdf\x2f\xd9\xfa\x63\x10\x00\x00")
 
 func evmdis_tracerJsBytes() ([]byte, error) {
 	return bindataRead(
@@ -153,7 +153,7 @@ func evmdis_tracerJs() (*asset, error) {
 	}
 
 	info := bindataFileInfo{name: "evmdis_tracer.js", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)}
-	a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xd5, 0xe8, 0x96, 0xa1, 0x8b, 0xc, 0x68, 0x3c, 0xe8, 0x5d, 0x7e, 0xf0, 0xab, 0xfe, 0xec, 0xd1, 0xb, 0x3d, 0xfc, 0xc7, 0xac, 0xb5, 0xa, 0x41, 0x55, 0x0, 0x3a, 0x60, 0xa7, 0x8e, 0x46, 0x93}}
+	a := &asset{bytes: bytes, info: info, digest: [32]uint8{0xb5, 0xc8, 0x73, 0x8e, 0xfb, 0x1f, 0x84, 0x7d, 0x37, 0xd9, 0x26, 0x24, 0x37, 0xb8, 0x65, 0xb1, 0xed, 0xa0, 0x76, 0x9a, 0xf0, 0x8e, 0x3a, 0x9b, 0x20, 0x93, 0x27, 0x26, 0x2e, 0xc9, 0x9b, 0xde}}
 	return a, nil
 }
 
@@ -348,25 +348,20 @@ func AssetNames() []string {
 
 // _bindata is a table, holding each asset generator, mapped to its name.
 var _bindata = map[string]func() (*asset, error){
-	"4byte_tracer.js": _4byte_tracerJs,
-
-	"bigram_tracer.js": bigram_tracerJs,
-
-	"call_tracer.js": call_tracerJs,
-
-	"evmdis_tracer.js": evmdis_tracerJs,
-
-	"noop_tracer.js": noop_tracerJs,
-
-	"opcount_tracer.js": opcount_tracerJs,
-
+	"4byte_tracer.js":    _4byte_tracerJs,
+	"bigram_tracer.js":   bigram_tracerJs,
+	"call_tracer.js":     call_tracerJs,
+	"evmdis_tracer.js":   evmdis_tracerJs,
+	"noop_tracer.js":     noop_tracerJs,
+	"opcount_tracer.js":  opcount_tracerJs,
 	"prestate_tracer.js": prestate_tracerJs,
-
-	"trigram_tracer.js": trigram_tracerJs,
-
-	"unigram_tracer.js": unigram_tracerJs,
+	"trigram_tracer.js":  trigram_tracerJs,
+	"unigram_tracer.js":  unigram_tracerJs,
 }
 
+// AssetDebug is true if the assets were built with the debug flag enabled.
+const AssetDebug = false
+
 // AssetDir returns the file names below a certain
 // directory embedded in the file by go-bindata.
 // For example if you run go-bindata on data/... and data contains the
diff --git a/examples/chain/main.go b/examples/chain/main.go
index d474c2b..5edd055 100644
--- a/examples/chain/main.go
+++ b/examples/chain/main.go
@@ -7,10 +7,10 @@ import (
 	"github.com/ava-labs/coreth/core"
 	"github.com/ava-labs/coreth/core/types"
 	"github.com/ava-labs/coreth/eth"
+	"github.com/ava-labs/coreth/params"
 	"github.com/ava-labs/go-ethereum/common"
 	"github.com/ava-labs/go-ethereum/common/hexutil"
 	"github.com/ava-labs/go-ethereum/log"
-	"github.com/ava-labs/go-ethereum/params"
 	"github.com/ava-labs/go-ethereum/rlp"
 	"math/big"
 	"sync"
diff --git a/examples/counter/main.go b/examples/counter/main.go
index 48a0e6f..85aa9d1 100644
--- a/examples/counter/main.go
+++ b/examples/counter/main.go
@@ -9,11 +9,11 @@ import (
 	"github.com/ava-labs/coreth/core"
 	"github.com/ava-labs/coreth/core/types"
 	"github.com/ava-labs/coreth/eth"
+	"github.com/ava-labs/coreth/params"
 	"github.com/ava-labs/go-ethereum/common"
 	"github.com/ava-labs/go-ethereum/common/compiler"
 	"github.com/ava-labs/go-ethereum/crypto"
 	"github.com/ava-labs/go-ethereum/log"
-	"github.com/ava-labs/go-ethereum/params"
 	"go/build"
 	"math/big"
 	"os"
diff --git a/examples/multicoin/main.go b/examples/multicoin/main.go
new file mode 100644
index 0000000..3e42010
--- /dev/null
+++ b/examples/multicoin/main.go
@@ -0,0 +1,218 @@
+package main
+
+import (
+	"crypto/rand"
+	//"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"github.com/ava-labs/coreth"
+	"github.com/ava-labs/coreth/core"
+	"github.com/ava-labs/coreth/eth"
+	//"github.com/ava-labs/coreth/accounts/abi"
+	"github.com/ava-labs/coreth/core/types"
+	"github.com/ava-labs/coreth/params"
+	"github.com/ava-labs/go-ethereum/common"
+	"github.com/ava-labs/go-ethereum/common/compiler"
+	"github.com/ava-labs/go-ethereum/crypto"
+	"github.com/ava-labs/go-ethereum/log"
+	"go/build"
+	"math/big"
+	"os"
+	"os/signal"
+	"path/filepath"
+	//"strings"
+	"syscall"
+	"time"
+)
+
+var (
+	codeHex = "6101c7610026600b82828239805160001a60731461001957fe5b30600052607381538281f3fe730000000000000000000000000000000000000000301460806040526004361061004b5760003560e01c80631e01043914610050578063abb24ba014610092578063b6510bb3146100a9575b600080fd5b61007c6004803603602081101561006657600080fd5b8101908080359060200190929190505050610118565b6040518082815260200191505060405180910390f35b81801561009e57600080fd5b506100a761013b565b005b8180156100b557600080fd5b50610116600480360360808110156100cc57600080fd5b81019080803573ffffffffffffffffffffffffffffffffffffffff16906020019092919080359060200190929190803590602001909291908035906020019092919050505061013e565b005b60003373ffffffffffffffffffffffffffffffffffffffff1682905d9050919050565b5c565b8373ffffffffffffffffffffffffffffffffffffffff1681836108fc8690811502906040516000604051808303818888878c8af69550505050505015801561018a573d6000803e3d6000fd5b505050505056fea26469706673582212204e4689067358d8e82903012dcaca0c004d36e39fc99360919fb824c4ce718bdd64736f6c634300060a0033"
+	codeABI = `[{"inputs":[{"internalType":"uint256","name":"coinid","type":"uint256"}],"name":"getBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]`
+)
+
+func checkError(err error) {
+	if err != nil {
+		panic(err)
+	}
+}
+
+func main() {
+	// configure the chain
+	config := eth.DefaultConfig
+	config.ManualCanonical = true
+	chainConfig := &params.ChainConfig{
+		ChainID:             big.NewInt(1),
+		HomesteadBlock:      big.NewInt(0),
+		DAOForkBlock:        big.NewInt(0),
+		DAOForkSupport:      true,
+		EIP150Block:         big.NewInt(0),
+		EIP150Hash:          common.HexToHash("0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0"),
+		EIP155Block:         big.NewInt(0),
+		EIP158Block:         big.NewInt(0),
+		ByzantiumBlock:      big.NewInt(0),
+		ConstantinopleBlock: big.NewInt(0),
+		PetersburgBlock:     big.NewInt(0),
+		IstanbulBlock:       nil,
+		Ethash:              nil,
+	}
+
+	// configure the genesis block
+	//genBalance := big.NewInt(100000000000000000)
+	genKey, _ := coreth.NewKey(rand.Reader)
+	bob, _ := coreth.NewKey(rand.Reader)
+
+	g := new(core.Genesis)
+	b := `{"config":{"chainId":1,"homesteadBlock":0,"daoForkBlock":0,"daoForkSupport":true,"eip150Block":0,"eip150Hash":"0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0","eip155Block":0,"eip158Block":0,"byzantiumBlock":0,"constantinopleBlock":0,"petersburgBlock":0},"nonce":"0x0","timestamp":"0x0","extraData":"0x00","gasLimit":"0x5f5e100","difficulty":"0x0","mixHash":"0x0000000000000000