diff --git a/client.go b/client.go
index 07adc9bd782481d3b72fcf35c2429c1287e988f4..2cc7651bea794c283c35aaf36d6ac9d1b1c5f872 100644
--- a/client.go
+++ b/client.go
@@ -1,3 +1,13 @@
+///////////////////////////////////////////////////////////////////////////////
+// Copyright © 2021 xx network SEZC                                          //
+//                                                                           //
+// Use of this source code is governed by a license that can be found in the //
+// LICENSE file                                                              //
+///////////////////////////////////////////////////////////////////////////////
+
+// +build linux darwin windows
+// +build amd64
+
 package main
 
 import "git.xx.network/elixxir/mainnet-commitments/client"