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authorChris Stewart <stewart.chris1234@gmail.com>2017-01-03 17:46:14 -0600
committerGitHub <noreply@github.com>2017-01-03 17:46:14 -0600
commit608d5dc95f2ddcee32758fe73de6d68b99021e39 (patch)
treec6ac6496087a9e01529d0cf51a9ec33897e4957e /bip-0141.mediawiki
parentd84186c01caa6728aff157b596908e8c5fdd2ad0 (diff)
downloadbips-608d5dc95f2ddcee32758fe73de6d68b99021e39.tar.xz
Update bip-0141.mediawiki
Clarifying rewording, `OP_0` is not a 1 byte push op code since it pushes the empty byte vector onto the stack.
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1 files changed, 1 insertions, 1 deletions
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@@ -83,7 +83,7 @@ If all transactions in a block do not have witness data, the commitment is optio
=== Witness program ===
-A <code>scriptPubKey</code> (or <code>redeemScript</code> as defined in BIP16/P2SH) that consists of a valid 1-byte push opcode (<code>OP_0,OP_1,OP_2...,OP_16</code>) followed by a data push between 2 and 40 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".
+A <code>scriptPubKey</code> (or <code>redeemScript</code> as defined in BIP16/P2SH) that consists of a select subset of opcodes (<code>OP_0,OP_1,OP_2,...,OP_16</code>) followed by a data push between 2 and 40 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".
There are two cases in which witness validation logic are triggered. Each case determines the location of the witness version byte and program, as well as the form of the scriptSig:
# Triggered by a <code>scriptPubKey</code> that is exactly a push of a version byte, plus a push of a witness program. The scriptSig must be exactly empty or validation fails. (''"native witness program"'')