From ff92171993c32202099230a4d1c75a229cfd2cb2 Mon Sep 17 00:00:00 2001
From: Hsiao-Wei Wang <hwwang156@gmail.com>
Date: Sat, 22 Sep 2018 15:06:53 +0800
Subject: [PATCH] Added CC0

---
 specs/casper_sharding_v2.1.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/specs/casper_sharding_v2.1.md b/specs/casper_sharding_v2.1.md
index 382d1df73..41ef3cfca 100644
--- a/specs/casper_sharding_v2.1.md
+++ b/specs/casper_sharding_v2.1.md
@@ -439,4 +439,7 @@ Slashing conditions may include:
     Proof of custody secret leak
     Proof of custody wrong custody bit
     Proof of custody no secret reveal
-    RANDAO leak
\ No newline at end of file
+    RANDAO leak
+
+## Copyright
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).