From ee744caca9dce9717b221a60c92f0d0e414db625 Mon Sep 17 00:00:00 2001 From: jl2012 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