diff --git a/cmd/derod/derod b/cmd/derod/derod
index ca09abc..9825587 100755
Binary files a/cmd/derod/derod and b/cmd/derod/derod differ
diff --git a/config/config.go b/config/config.go
index 6809ead..ff9acfa 100644
--- a/config/config.go
+++ b/config/config.go
@@ -89,7 +89,8 @@ type CHAIN_CONFIG struct {
 }
 
 var Mainnet = CHAIN_CONFIG{Name: "mainnet",
-	Network_ID:                       uuid.FromBytesOrNil([]byte{0x59, 0xd7, 0xf7, 0xe9, 0xdd, 0x48, 0xd5, 0xfd, 0x13, 0x0a, 0xf6, 0xe0, 0x9a, 0xec, 0xb9, 0x23}),
+	//Network_ID: uuid.FromBytesOrNil([]byte{0x59, 0xd7, 0xf7, 0xe9, 0xdd, 0x48, 0xd5, 0xfd, 0x13, 0x0a, 0xf6, 0xe0, 0x9a, 0xec, 0xb9, 0x23}),
+	Network_ID:                       uuid.FromStringOrNil("afdb5368-641d-41a2-8bc2-d2e825e25c46"),
 	Public_Address_Prefix:            0xc8ed8, //for dERo
 	Public_Address_Prefix_Integrated: 0xa0ed8, //for dERi
 	P2P_Default_Port:                 18090,
diff --git a/p2p/controller.go b/p2p/controller.go
index 0983e89..4631fed 100644
--- a/p2p/controller.go
+++ b/p2p/controller.go
@@ -58,7 +58,8 @@ func P2P_engine() {
 	}
 
 	// add hard-coded seeds
-	end_point_list = append(end_point_list, "212.8.242.60:18090")
+	//end_point_list = append(end_point_list, "212.8.242.60:18090")
+	end_point_list = append(end_point_list, "127.0.0.1:18090")
 
 	for {
 		if Exit_In_Progress {
diff --git a/toHaveInMind.md b/toHaveInMind.md
index 8b73a64..fd88b50 100644
--- a/toHaveInMind.md
+++ b/toHaveInMind.md
@@ -1,6 +1,6 @@
 - blockchain is stored in a boltdb, in tmp/derod_database.db
 
-- the seeds are hardcoded in derosuite/p2p/controller.go, line 61:
+- the seeds are hardcoded in p2p/controller.go, line 61:
 ```go
 // add hard-coded seeds
 end_point_list = append(end_point_list, "212.8.242.60:18090")
@@ -9,3 +9,15 @@ And also can be setted in the parameter:
 ```
 derod --add-exclusive-node
 ```
+
+- mainnetwork is defined in config/config.go line 91
+	- NETWORK_ID
+        - Line 92 can be substitued by:
+        ```go
+        Network_ID:                       uuid.FromStringOrNil("afdb5368-641d-41a2-8bc2-d2e825e25c46"),
+        ```
+        Where the string is a uuid string
+	- Genesis_Block_Hash
+	- Genesis_Tx
+
+- blocktime: config/config.go line 24
\ No newline at end of file