diff --git a/docs/emails/cryptography/15.md b/docs/emails/cryptography/15.md
index 947c275..e3f5c91 100644
--- a/docs/emails/cryptography/15.md
+++ b/docs/emails/cryptography/15.md
@@ -4,6 +4,7 @@ title: Bitcoin P2P e-cash paper
 grand_parent: Emails
 parent: Cryptography Mailing List
 nav_order: 15
+2008-11-17 17:24:43 UTC
 ---
 
 # Bitcoin P2P e-cash paper