diff --git a/config/config.go b/config/config.go
index de855f88d..67eed94d6 100644
--- a/config/config.go
+++ b/config/config.go
@@ -127,14 +127,14 @@ func Load(path string, netMode NetMode) (Config, error) {
 func (s SystemFee) TryGetValue(txType transaction.TXType) util.Fixed8 {
 	switch txType {
 	case transaction.EnrollmentType:
-		return util.NewFixed8(s.EnrollmentTransaction)
+		return util.Fixed8FromInt64(s.EnrollmentTransaction)
 	case transaction.IssueType:
-		return util.NewFixed8(s.IssueTransaction)
+		return util.Fixed8FromInt64(s.IssueTransaction)
 	case transaction.PublishType:
-		return util.NewFixed8(s.PublishTransaction)
+		return util.Fixed8FromInt64(s.PublishTransaction)
 	case transaction.RegisterType:
-		return util.NewFixed8(s.RegisterTransaction)
+		return util.Fixed8FromInt64(s.RegisterTransaction)
 	default:
-		return util.NewFixed8(0)
+		return util.Fixed8FromInt64(0)
 	}
 }
diff --git a/pkg/core/blockchain.go b/pkg/core/blockchain.go
index 1cbdda6a7..bd8e6365d 100644
--- a/pkg/core/blockchain.go
+++ b/pkg/core/blockchain.go
@@ -635,14 +635,14 @@ func (bc *Blockchain) FeePerByte(t *transaction.Transaction) util.Fixed8 {
 
 // NetworkFee returns network fee
 func (bc *Blockchain) NetworkFee(t *transaction.Transaction) util.Fixed8 {
-	inputAmount := util.NewFixed8(0)
+	inputAmount := util.Fixed8FromInt64(0)
 	for _, txOutput := range bc.References(t) {
 		if txOutput.AssetID == utilityTokenTX().Hash() {
 			inputAmount.Add(txOutput.Amount)
 		}
 	}
 
-	outputAmount := util.NewFixed8(0)
+	outputAmount := util.Fixed8FromInt64(0)
 	for _, txOutput := range t.Outputs {
 		if txOutput.AssetID == utilityTokenTX().Hash() {
 			outputAmount.Add(txOutput.Amount)
@@ -660,7 +660,7 @@ func (bc *Blockchain) SystemFee(t *transaction.Transaction) util.Fixed8 {
 // IsLowPriority flags a trnsaction as low priority if the network fee is less than
 // LowPriorityThreshold
 func (bc *Blockchain) IsLowPriority(t *transaction.Transaction) bool {
-	return bc.NetworkFee(t) < util.NewFixed8FromFloat(bc.GetConfig().LowPriorityThreshold)
+	return bc.NetworkFee(t) < util.Fixed8FromFloat(bc.GetConfig().LowPriorityThreshold)
 }
 
 // GetMemPool returns the memory pool of the blockchain.
diff --git a/pkg/core/transaction/register_test.go b/pkg/core/transaction/register_test.go
index 00ef0f218..8512f8f7d 100644
--- a/pkg/core/transaction/register_test.go
+++ b/pkg/core/transaction/register_test.go
@@ -17,7 +17,7 @@ func TestRegisterTX(t *testing.T) {
 		Data: &RegisterTX{
 			AssetType: UtilityToken,
 			Name:      "this is some token I created",
-			Amount:    util.NewFixed8(1000000),
+			Amount:    util.Fixed8FromInt64(1000000),
 			Precision: 8,
 			Owner:     &crypto.PublicKey{},
 			Admin:     util.RandomUint160(),
@@ -48,7 +48,7 @@ func TestDecodeRegisterTXFromRawString(t *testing.T) {
 	txData := tx.Data.(*RegisterTX)
 	assert.Equal(t, GoverningToken, txData.AssetType)
 	assert.Equal(t, "[{\"lang\":\"zh-CN\",\"name\":\"小蚁股\"},{\"lang\":\"en\",\"name\":\"AntShare\"}]", txData.Name)
-	assert.Equal(t, util.NewFixed8(100000000), txData.Amount)
+	assert.Equal(t, util.Fixed8FromInt64(100000000), txData.Amount)
 	assert.Equal(t, uint8(0), txData.Precision)
 	assert.Equal(t, &crypto.PublicKey{}, txData.Owner)
 	assert.Equal(t, "Abf2qMs1pzQb8kYk9RuxtUb9jtRKJVuBJt", crypto.AddressFromUint160(txData.Admin))
diff --git a/pkg/core/util.go b/pkg/core/util.go
index a5eab4b85..dffbc7b41 100644
--- a/pkg/core/util.go
+++ b/pkg/core/util.go
@@ -101,7 +101,7 @@ func governingTokenTX() *transaction.Transaction {
 	registerTX := &transaction.RegisterTX{
 		AssetType: transaction.GoverningToken,
 		Name:      "[{\"lang\":\"zh-CN\",\"name\":\"小蚁股\"},{\"lang\":\"en\",\"name\":\"AntShare\"}]",
-		Amount:    util.NewFixed8(100000000),
+		Amount:    util.Fixed8FromInt64(100000000),
 		Precision: 0,
 		Owner:     &crypto.PublicKey{},
 		Admin:     admin,
@@ -170,7 +170,7 @@ func calculateUtilityAmount() util.Fixed8 {
 	for i := 0; i < len(genAmount); i++ {
 		sum += genAmount[i]
 	}
-	return util.NewFixed8(int64(sum * decrementInterval))
+	return util.Fixed8FromInt64(int64(sum * decrementInterval))
 }
 
 // headerSliceReverse reverses the given slice of *Header.
diff --git a/pkg/util/fixed8.go b/pkg/util/fixed8.go
index 21317a2aa..ec7b96d61 100644
--- a/pkg/util/fixed8.go
+++ b/pkg/util/fixed8.go
@@ -49,19 +49,19 @@ func (f Fixed8) Int64Value() int64 {
 	return int64(f) / decimals
 }
 
-// NewFixed8 returns a new Fixed8 type multiplied by decimals.
-func NewFixed8(val int64) Fixed8 {
+// Fixed8FromInt64 returns a new Fixed8 type multiplied by decimals.
+func Fixed8FromInt64(val int64) Fixed8 {
 	return Fixed8(decimals * val)
 }
 
-// NewFixed8FromFloat returns a new Fixed8 type multiplied by decimals.
-func NewFixed8FromFloat(val float64) Fixed8 {
+// Fixed8FromFloat returns a new Fixed8 type multiplied by decimals.
+func Fixed8FromFloat(val float64) Fixed8 {
 	return Fixed8(int64(decimals * val))
 }
 
-// Fixed8DecodeString parses s which must be a fixed point number
+// Fixed8FromString parses s which must be a fixed point number
 // with precision up to 10^-8
-func Fixed8DecodeString(s string) (Fixed8, error) {
+func Fixed8FromString(s string) (Fixed8, error) {
 	parts := strings.SplitN(s, ".", 2)
 	ip, err := strconv.ParseInt(parts[0], 10, 64)
 	if err != nil {
@@ -87,7 +87,7 @@ func Fixed8DecodeString(s string) (Fixed8, error) {
 func (f *Fixed8) UnmarshalJSON(data []byte) error {
 	var s string
 	if err := json.Unmarshal(data, &s); err == nil {
-		p, err := Fixed8DecodeString(s)
+		p, err := Fixed8FromString(s)
 		if err != nil {
 			return err
 		}
@@ -121,7 +121,7 @@ func Satoshi() Fixed8 {
 
 // Div implements Fixd8 division operator.
 func (f Fixed8) Div(i int64) Fixed8 {
-	return f / NewFixed8(i)
+	return f / Fixed8FromInt64(i)
 }
 
 // Add implements Fixd8 addition operator.
diff --git a/pkg/util/fixed8_test.go b/pkg/util/fixed8_test.go
index 352b75250..aea003130 100644
--- a/pkg/util/fixed8_test.go
+++ b/pkg/util/fixed8_test.go
@@ -8,18 +8,18 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func TestNewFixed8(t *testing.T) {
+func TestFixed8FromInt64(t *testing.T) {
 	values := []int64{9000, 100000000, 5, 10945, -42}
 
 	for _, val := range values {
-		assert.Equal(t, Fixed8(val*decimals), NewFixed8(val))
-		assert.Equal(t, val, NewFixed8(val).Int64Value())
+		assert.Equal(t, Fixed8(val*decimals), Fixed8FromInt64(val))
+		assert.Equal(t, val, Fixed8FromInt64(val).Int64Value())
 	}
 }
 
 func TestFixed8Add(t *testing.T) {
-	a := NewFixed8(1)
-	b := NewFixed8(2)
+	a := Fixed8FromInt64(1)
+	b := Fixed8FromInt64(2)
 
 	c := a.Add(b)
 	expected := int64(3)
@@ -28,8 +28,8 @@ func TestFixed8Add(t *testing.T) {
 
 func TestFixed8Sub(t *testing.T) {
 
-	a := NewFixed8(42)
-	b := NewFixed8(34)
+	a := Fixed8FromInt64(42)
+	b := Fixed8FromInt64(34)
 
 	c := a.Sub(b)
 	assert.Equal(t, int64(8), c.Int64Value())
@@ -39,29 +39,29 @@ func TestFixed8FromFloat(t *testing.T) {
 	inputs := []float64{12.98, 23.87654333, 100.654322, 456789.12345665, -3.14159265}
 
 	for _, val := range inputs {
-		assert.Equal(t, Fixed8(val*decimals), NewFixed8FromFloat(val))
-		assert.Equal(t, val, NewFixed8FromFloat(val).FloatValue())
+		assert.Equal(t, Fixed8(val*decimals), Fixed8FromFloat(val))
+		assert.Equal(t, val, Fixed8FromFloat(val).FloatValue())
 	}
 }
 
-func TestFixed8DecodeString(t *testing.T) {
-	// Fixed8DecodeString works correctly with integers
+func TestFixed8FromString(t *testing.T) {
+	// Fixed8FromString works correctly with integers
 	ivalues := []string{"9000", "100000000", "5", "10945", "20.45", "0.00000001", "-42"}
 	for _, val := range ivalues {
-		n, err := Fixed8DecodeString(val)
+		n, err := Fixed8FromString(val)
 		assert.Nil(t, err)
 		assert.Equal(t, val, n.String())
 	}
 
-	// Fixed8DecodeString parses number with maximal precision
+	// Fixed8FromString parses number with maximal precision
 	val := "123456789.12345678"
-	n, err := Fixed8DecodeString(val)
+	n, err := Fixed8FromString(val)
 	assert.Nil(t, err)
 	assert.Equal(t, Fixed8(12345678912345678), n)
 
-	// Fixed8DecodeString parses number with non-maximal precision
+	// Fixed8FromString parses number with non-maximal precision
 	val = "901.2341"
-	n, err = Fixed8DecodeString(val)
+	n, err = Fixed8FromString(val)
 	assert.Nil(t, err)
 	assert.Equal(t, Fixed8(90123410000), n)
 }
@@ -79,7 +79,7 @@ func TestFixed8UnmarshalJSON(t *testing.T) {
 
 	for _, fl := range testCases {
 		str := strconv.FormatFloat(fl, 'g', -1, 64)
-		expected, _ := Fixed8DecodeString(str)
+		expected, _ := Fixed8FromString(str)
 
 		// UnmarshalJSON should decode floats
 		var u1 Fixed8