diff --git a/backend/block.go b/backend/block.go
index 960afa2..5225ec1 100644
--- a/backend/block.go
+++ b/backend/block.go
@@ -19,12 +19,13 @@ package backend
 import (
 	"encoding/json"
 	"fmt"
-	"github.com/CortexFoundation/CortexTheseus/log"
-	"github.com/CortexFoundation/torrentfs/types"
-	bolt "go.etcd.io/bbolt"
 	"sort"
 	"strconv"
 	"time"
+
+	"github.com/CortexFoundation/CortexTheseus/log"
+	"github.com/CortexFoundation/torrentfs/types"
+	bolt "go.etcd.io/bbolt"
 )
 
 func (fs *ChainDB) Blocks() []*types.Block {
diff --git a/backend/chaindb.go b/backend/chaindb.go
index 4e2e2c5..324ad65 100644
--- a/backend/chaindb.go
+++ b/backend/chaindb.go
@@ -18,20 +18,22 @@ package backend
 
 import (
 	"encoding/binary"
+	"os"
+	"path/filepath"
+	"strconv"
+	"sync"
+	"sync/atomic"
+	"time"
+
 	"github.com/CortexFoundation/merkletree"
 	"github.com/CortexFoundation/torrentfs/params"
 	"github.com/CortexFoundation/torrentfs/types"
-	"sync"
-	"sync/atomic"
+
 	//lru "github.com/hashicorp/golang-lru"
 	"github.com/CortexFoundation/CortexTheseus/common"
 	"github.com/CortexFoundation/CortexTheseus/log"
 	"github.com/google/uuid"
 	bolt "go.etcd.io/bbolt"
-	"os"
-	"path/filepath"
-	"strconv"
-	"time"
 )
 
 type ChainDB struct {
diff --git a/backend/file.go b/backend/file.go
index d9318ee..420d22e 100644
--- a/backend/file.go
+++ b/backend/file.go
@@ -18,11 +18,12 @@ package backend
 
 import (
 	"encoding/json"
+	"time"
+
 	"github.com/CortexFoundation/CortexTheseus/common"
 	"github.com/CortexFoundation/CortexTheseus/log"
 	"github.com/CortexFoundation/torrentfs/types"
 	bolt "go.etcd.io/bbolt"
-	"time"
 )
 
 func (fs *ChainDB) Files() []*types.FileInfo {
diff --git a/backend/torrent.go b/backend/torrent.go
index b8136f1..22e4bb7 100644
--- a/backend/torrent.go
+++ b/backend/torrent.go
@@ -18,11 +18,13 @@ package backend
 
 import (
 	"errors"
+	"strconv"
 	"strings"
+
 	//lru "github.com/hashicorp/golang-lru"
+
 	"github.com/CortexFoundation/CortexTheseus/log"
 	bolt "go.etcd.io/bbolt"
-	"strconv"
 )
 
 func (fs *ChainDB) Torrents() map[string]uint64 {
diff --git a/backend/tree.go b/backend/tree.go
index e6d2fd6..4044174 100644
--- a/backend/tree.go
+++ b/backend/tree.go
@@ -18,6 +18,10 @@ package backend
 
 import (
 	"errors"
+	"sort"
+	"strconv"
+	"time"
+
 	"github.com/CortexFoundation/CortexTheseus/common"
 	"github.com/CortexFoundation/CortexTheseus/common/hexutil"
 	"github.com/CortexFoundation/CortexTheseus/log"
@@ -25,9 +29,6 @@ import (
 	"github.com/CortexFoundation/torrentfs/params"
 	"github.com/CortexFoundation/torrentfs/types"
 	bolt "go.etcd.io/bbolt"
-	"sort"
-	"strconv"
-	"time"
 )
 
 func (fs *ChainDB) Leaves() []merkletree.Content {
diff --git a/cmd/robot/main.go b/cmd/robot/main.go
index 8b016b1..1c888d8 100644
--- a/cmd/robot/main.go
+++ b/cmd/robot/main.go
@@ -7,8 +7,9 @@ import (
 	"time"
 
 	"github.com/CortexFoundation/CortexTheseus/log"
-	"github.com/CortexFoundation/robot"
 	"github.com/CortexFoundation/torrentfs/params"
+
+	"github.com/CortexFoundation/robot"
 )
 
 func main() {
diff --git a/model_srv.go b/model_srv.go
index 605725f..cfa4f35 100644
--- a/model_srv.go
+++ b/model_srv.go
@@ -19,12 +19,13 @@ package robot
 import (
 	"context"
 	"errors"
+	"time"
+
 	"github.com/CortexFoundation/CortexTheseus/common"
 	"github.com/CortexFoundation/CortexTheseus/common/mclock"
 	"github.com/CortexFoundation/CortexTheseus/log"
 	"github.com/CortexFoundation/torrentfs/params"
 	"github.com/CortexFoundation/torrentfs/types"
-	"time"
 )
 
 func (m *Monitor) parseFileMeta(tx *types.Transaction, meta *types.FileMeta, b *types.Block) error {
diff --git a/monitor.go b/monitor.go
index 084cfc2..c2e6c9b 100644
--- a/monitor.go
+++ b/monitor.go
@@ -19,22 +19,24 @@ package robot
 import (
 	"context"
 	"errors"
+	"math"
+	"path/filepath"
+	"runtime"
+	"sync"
+	"sync/atomic"
+	"time"
+
 	"github.com/CortexFoundation/CortexTheseus/common"
 	"github.com/CortexFoundation/CortexTheseus/common/mclock"
 	"github.com/CortexFoundation/CortexTheseus/log"
 	"github.com/CortexFoundation/CortexTheseus/rpc"
-	"github.com/CortexFoundation/robot/backend"
 	"github.com/CortexFoundation/torrentfs/params"
 	"github.com/CortexFoundation/torrentfs/types"
 	lru "github.com/hashicorp/golang-lru/v2"
 	ttl "github.com/hashicorp/golang-lru/v2/expirable"
 	"github.com/ucwong/golang-kv"
-	"math"
-	"path/filepath"
-	"runtime"
-	"sync"
-	"sync/atomic"
-	"time"
+
+	"github.com/CortexFoundation/robot/backend"
 )
 
 // Monitor observes the data changes on the blockchain and synchronizes.
diff --git a/rpc.go b/rpc.go
index 07fc2c8..3abc4ae 100644
--- a/rpc.go
+++ b/rpc.go
@@ -18,13 +18,14 @@ package robot
 
 import (
 	"errors"
+	"strconv"
+	"time"
+
 	"github.com/CortexFoundation/CortexTheseus/common/hexutil"
 	"github.com/CortexFoundation/CortexTheseus/log"
 	"github.com/CortexFoundation/CortexTheseus/rpc"
 	"github.com/CortexFoundation/torrentfs/params"
 	"github.com/CortexFoundation/torrentfs/types"
-	"strconv"
-	"time"
 )
 
 // SetConnection method builds connection to remote or local communicator.
diff --git a/service.go b/service.go
index 42afe5b..1b86e3b 100644
--- a/service.go
+++ b/service.go
@@ -19,14 +19,15 @@ package robot
 import (
 	"encoding/json"
 	"errors"
+	"math/big"
+	"strconv"
+	"time"
+
 	"github.com/CortexFoundation/CortexTheseus/common"
 	"github.com/CortexFoundation/CortexTheseus/common/mclock"
 	"github.com/CortexFoundation/CortexTheseus/log"
 	params1 "github.com/CortexFoundation/CortexTheseus/params"
 	"github.com/CortexFoundation/torrentfs/types"
-	"math/big"
-	"strconv"
-	"time"
 )
 
 // solve block from node