1 files changed, 3 insertions, 0 deletions
diff --git a/bitwise.go b/bitwise.go
index b9b6f47..cde7bca 100644
--- a/bitwise.go
+++ b/bitwise.go
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: AGPL-3.0-only
+// SPDX-FileCopyrightText: Copyright (c) 2025 Runxi Yu <https://runxiyu.org>
+
 package main
 
 func validateBitZeros(bs []byte, n uint) bool {