From mboxrd@z Thu Jan  1 00:00:00 1970
From: Feng Shu <tumashu@163.com>
Subject: Is sha256 optional?
Date: Fri, 22 May 2015 19:24:06 +0800
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Is the below code optional?

#+BEGIN_COMMENT
(sha256 (base32 "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"))
#+END_COMMENT

--