From ZmnSCPxj at protonmail.com  Thu Dec 19 03:22:18 2019
From: ZmnSCPxj at protonmail.com (ZmnSCPxj)
Date: Thu, 19 Dec 2019 03:22:18 +0000
Subject: [Lightning-dev] Pay-to-Open and UX improvements
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Good morning t-bast,

> * A script-path spend with the following script (and only that script):
> OP_SWAP OP_DUP <R> OP_EQUALVERIFY OP_SWAP <P> OP_CHECKSIG

Why not this:

    <R> OP_SWAP OP_CHECKSPLITSIG

?

Since `R` is constrained to be fixed anyway, why repeat `R` twice, once in the script and once in the witness stack?

Also, would we want to support non-`SIGHASH_ALL` sighashes?

Regards,
ZmnSCPxj