diff --git a/chain/clientchain.go b/chain/clientchain.go
index 5322d56..897065b 100644
--- a/chain/clientchain.go
+++ b/chain/clientchain.go
@@ -3,7 +3,6 @@ package chain
 import (
 	"context"
 	"strings"
-	"time"
 
 	"github.com/gogf/gf/v2/encoding/gbase64"
 	"github.com/gogf/gf/v2/frame/g"