From ee744caca9dce9717b221a60c92f0d0e414db625 Mon Sep 17 00:00:00 2001
From: jl2012 <jl2012@xbt.hk>
Date: Fri, 8 Apr 2016 23:45:54 +0800
Subject: BIP141: commitment clarification. BIP144: new diagram

---
 bip-0141.mediawiki | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'bip-0141.mediawiki')

diff --git a/bip-0141.mediawiki b/bip-0141.mediawiki
index dd17eaa..f9881be 100644
--- a/bip-0141.mediawiki
+++ b/bip-0141.mediawiki
@@ -75,6 +75,8 @@ and the coinbase's input's witness must consist of a single 32-byte array for th
 
 If there are more than one scriptPubKey matching the pattern, the one with highest output index is assumed to be the commitment.
 
+If all transactions in a block do not have witness data, the commitment is optional.
+
 === Witness program ===
 
 A scriptPubKey (or redeemScript as defined in BIP16/P2SH) that consists of a 1-byte push opcode (for 0 to 16) followed by a data push between 2 and 32 bytes gets a new special meaning. The value of the first push is called the "version byte". The following byte vector pushed is called the "witness program".
-- 
cgit v1.2.3

