diff --git a/sharding/blocks.go b/sharding/blocks.go
new file mode 100644
index 0000000000..2831175b73
--- /dev/null
+++ b/sharding/blocks.go
@@ -0,0 +1,6 @@
+// 2018 Prysmatic Labs
+// This file is part of the prysmaticlabs/geth-sharding library.
+//
+// This file overrides the default protocol blocks interface
+
+package sharding
diff --git a/sharding/transactions.go b/sharding/transactions.go
new file mode 100644
index 0000000000..8bbaa9a6da
--- /dev/null
+++ b/sharding/transactions.go
@@ -0,0 +1,6 @@
+// 2018 Prysmatic Labs
+// This file is part of the prysmaticlabs/geth-sharding library.
+//
+// This file overrides the default protocol transaction interface
+
+package sharding
diff --git a/sharding/vm.go b/sharding/vm.go
new file mode 100644
index 0000000000..bef5b0112b
--- /dev/null
+++ b/sharding/vm.go
@@ -0,0 +1,6 @@
+// 2018 Prysmatic Labs
+// This file is part of the prysmaticlabs/geth-sharding library.
+//
+// This file overrides the default protocol VM interface
+
+package sharding