MIME-Version: 1.0
From: Suhas Daftuar <sdaftuar@gmail.com>
Date: Fri, 19 Jan 2018 15:38:34 -0500
Message-ID: <CAFp6fsF_QS4OMgjYqLw+u2jsOoRn0+3jgHws8Bo7WFkR5E1+Og@mail.gmail.com>
To: Bitcoin Dev <bitcoin-dev@lists.linuxfoundation.org>
Content-Type: multipart/alternative; boundary="f4030436126c7ca3a4056327109f"
Subject: [bitcoin-dev] [BIP Proposal] P2SH and Version 0 Segwit Script
	enforcement from genesis
Precedence: list

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Hi,

I propose backdating the P2SH and Segwit version 0 script rules back to the
genesis block, as a way to simplify these consensus rules.  Here's the
abstract from a draft BIP I wrote up to explain this change:

The Pay to Script Hash (P2SH, BIP 16) script rules and the Version 0
Witness Program script rules (BIP 143/141) can be enforced from the genesis
block with only one historical exception. Doing so simplifies consensus
rules and allows protocol implementers to avoid writing and testing code
paths that are no longer relevant.

The full BIP draft can be found here:
https://github.com/sdaftuar/bips/blob/p2sh-v0segwit-from-genesis/bip-sdaftuar-p2sh-v0segwit-from-genesis.mediawiki

And the currently open pull request to Bitcoin Core which implements this
change can be found here: https://github.com/bitcoin/bitcoin/pull/11739

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<div dir=3D"ltr">Hi,<div><br></div><div>I propose backdating the P2SH and S=
egwit version 0 script rules back to the genesis block, as a way to simplif=
y these consensus rules.=C2=A0 Here&#39;s the abstract from a draft BIP I w=
rote up to explain this change:</div><div><br></div><div><blockquote style=
=3D"margin:0px 0px 0px 40px;border:none;padding:0px"><div><div>The Pay to S=
cript Hash (P2SH, BIP 16) script rules and the Version 0 Witness Program sc=
ript rules (BIP 143/141) can be enforced from the genesis block with only o=
ne historical exception. Doing so simplifies consensus rules and allows pro=
tocol implementers to avoid writing and testing code paths that are no long=
er relevant.</div><div><br></div></div></blockquote>The full BIP draft can =
be found here:=C2=A0<a href=3D"https://github.com/sdaftuar/bips/blob/p2sh-v=
0segwit-from-genesis/bip-sdaftuar-p2sh-v0segwit-from-genesis.mediawiki">htt=
ps://github.com/sdaftuar/bips/blob/p2sh-v0segwit-from-genesis/bip-sdaftuar-=
p2sh-v0segwit-from-genesis.mediawiki</a></div><div><br></div><div>And the c=
urrently open pull request to Bitcoin Core which implements this change can=
 be found here:=C2=A0<a href=3D"https://github.com/bitcoin/bitcoin/pull/117=
39">https://github.com/bitcoin/bitcoin/pull/11739</a></div></div>

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