diff --git a/pkg/core/netmap/keys.go b/pkg/core/netmap/keys.go
new file mode 100644
index 000000000..5ad175b32
--- /dev/null
+++ b/pkg/core/netmap/keys.go
@@ -0,0 +1,7 @@
+package netmap
+
+// AnnouncedKeys is an interface of utility for working with announced public keys of the storage nodes.
+type AnnouncedKeys interface {
+	// Checks if key was announced by local node.
+	IsLocalKey(key []byte) bool
+}