From: "'moonsettler' via Bitcoin Development Mailing List" <bitcoindev@googlegroups.com>
To: Antoine Poinsot <darosior@protonmail•com>
Cc: Murch <murch@murch•one>, bitcoindev@googlegroups.com
Subject: Re: [bitcoindev] CHECKSIGFROMSTACK(VERIFY/ADD)
Date: Sat, 23 Nov 2024 19:45:02 +0000 [thread overview]
Message-ID: <_p-Du0dVGx1_UqtSLb7UpQRrHWP0JVQOGFeZ3-W-m8eZNNshMsW_oFXw07nAZEnP-YZO6sBn9iF-RY7qK15jxCjQPBMc4LZ-4cesUuRose8=@protonmail.com> (raw)
In-Reply-To: <nRFLHRhwXER56TrZy50tJ2HmvipjteXzPfz6mEs_VmyZ5sXDNVUIUniPppSphF5SOVCQmpRZSjmBN8_eIMZEbdFgl3vJn-8XSEmpAFmj5SM=@protonmail.com>
Dear List,
Can anyone think of a reason to keep OP_CHECKSIGFROMSTACKVERIFY as NOP5 available
in legacy script?
Currently Brandon and I are leaning towards simply removing CSFSV from LNhance and
from the CSFS BIP.
Reasoning:
* CSFS is more likely to be used in Symmetry
* In case where CSFSV is desired OP_CSFS OP_VERIFY is perfectly workable.
* Simplifies code
* Don't have an actual use case for CSFSV in legacy rn
* Upgradeable NOPs are scarce
* Backporting tapscript would bring all functionality to legacy
BR,
moonsettler
Sent with Proton Mail secure email.
On Friday, November 15th, 2024 at 4:33 PM, 'Antoine Poinsot' via Bitcoin Development Mailing List <bitcoindev@googlegroups.com> wrote:
> To add to Murch's point, from my experience working with Script in general and
> trying to estimate the cost of validation of legacy script as part of the
> consensus cleanup in particular, i think we should refrain from modifying legacy
> Script and further complicate reasoning about the worst case unless strictly
> necessary.
>
> Best,
> Antoine
>
> On Friday, November 15th, 2024 at 9:57 AM, Murch murch@murch•one wrote:
>
> > Hi everyone,
> >
> > On 2024-11-14 17:02, Brandon Black wrote:
> >
> > > * Should CHECKSIGFROMSTACKVERIFY (CSFSV) be added to pre-tapscript
> > > […]
> > > My personal thinking in initially including CSFSV in earlier script versions was basically that it's compatible with NOP forking, so why not.
> >
> > If there is no compelling use case or concrete benefit, I don’t think "it’s compatible, why not" is convincing motivation, especially at the cost of a NOP.
> >
> > On 2024-11-14 17:02, Brandon Black wrote:
> >
> > > * Should we include CHECKSIGFROMSTACKADD?
> >
> > I feel similar about this. If there is currently no demand for this, and future demand also seems unlikely, I would prefer a smaller, more focused set of changes.
> >
> > Cheers,
> > Murch
> >
> > --
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>
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prev parent reply other threads:[~2024-11-23 19:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-14 22:02 Brandon Black
2024-11-15 10:14 ` 'moonsettler' via Bitcoin Development Mailing List
2024-11-15 14:57 ` Murch
2024-11-15 15:33 ` 'Antoine Poinsot' via Bitcoin Development Mailing List
2024-11-23 19:45 ` 'moonsettler' via Bitcoin Development Mailing List [this message]
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