diff --git a/config/protocol.mainnet.yml b/config/protocol.mainnet.yml
index 97b5e57a0..7284cd7ce 100644
--- a/config/protocol.mainnet.yml
+++ b/config/protocol.mainnet.yml
@@ -30,7 +30,7 @@ ProtocolConfiguration:
     IssueTransaction: 500
     PublishTransaction: 500
     RegisterTransaction: 10000
-  VerifyBlocks: false
+  VerifyBlocks: true
   VerifyTransactions: false
   FreeGasLimit: 10.0
   MaxTransactionsPerBlock: 500
@@ -42,7 +42,7 @@ ApplicationConfiguration:
   # LogPath could be set up in case you need stdout logs to some proper file.
   # LogPath: "./log/neogo.log"
   DBConfiguration:
-    Type: "boltdb" #other options: 'inmemory','redis','boltdb', 'badgerdb'.
+    Type: "leveldb" #other options: 'inmemory','redis','boltdb', 'badgerdb'.
     # DB type options. Uncomment those you need in case you want to switch DB type.
     LevelDBOptions:
       DataDirectoryPath: "./chains/mainnet"
@@ -50,10 +50,10 @@ ApplicationConfiguration:
   #      Addr: "localhost:6379"
   #      Password: ""
   #      DB: 0
-    BoltDBOptions:
-      FilePath: "./chains/mainnet.bolt"
-    BadgerDBOptions:
-      BadgerDir: "./chains/mainnet.badger"
+  #    BoltDBOptions:
+  #      FilePath: "./chains/mainnet.bolt"
+  #    BadgerDBOptions:
+  #      BadgerDir: "./chains/mainnet.badger"
   #  Uncomment in order to set up custom address for node.
   #  Address: 127.0.0.1
   NodePort: 10333