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From: Kalle Rosenbaum <kalle@rosenbaum.se>
Date: Fri, 17 Jan 2025 11:01:19 +0100
Message-ID: <CAPswA9w0YGecAQ4ON43mL_Cj2WL3rcV5seUyyXJ=3aVx6zpTzQ@mail.gmail.com>
Subject: Re: [bitcoindev] Who uses or wants to use PSBTv2 (BIP370)
To: Sjors Provoost <sjors@sprovoost.nl>
Cc: bitcoindev@googlegroups.com
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Sjors,

Ledger has a PSBTv2 implementation since a number of years back. It's used
for communication between their Ledger Live software and the hardware
wallet.
https://github.com/LedgerHQ/ledger-live/blob/03b94dae50b1177801c57d9cee14cb5b4752b075/libs/ledgerjs/packages/hw-app-btc/src/newops/psbtv2.ts

/Kalle

On Fri, 17 Jan 2025 at 10:17, Sjors Provoost <sjors@sprovoost.nl> wrote:

> Dear list,
>
> It's been a few years since BIP370 was proposed [0]. It's a backwards
> compatible change to the PSBT standard defined by BIP174 [1]. Its main
> benefit is the ability to add new inputs and outputs to a transaction.
>
> There's a Bitcoin Core pull request #21283 implements support [2], but has
> seen very little review so far. Being able to test it against other
> implementation would aid in review.
>
> So which projects are using PSBTv2 or would very much like to?
>
> So far I've learned that Core Lightning uses it. They convert it back to
> v0 when interacting with Bitcoin Core, which they find suboptimal [3].
>
> Feel free to answer here on Stack Exchange [4].
>
> Kind regards,
>
> Sjors Provoost
>
> [0] https://github.com/bitcoin/bips/blob/master/bip-0370.mediawiki
> [1] https://github.com/bitcoin/bips/blob/master/bip-0174.mediawiki
> [2] https://github.com/bitcoin/bitcoin/pull/21283
> [3] https://github.com/bitcoin/bitcoin/pull/21283#issuecomment-2597171643
> [4]
> https://bitcoin.stackexchange.com/questions/125384/who-uses-or-wants-to-use-psbtv2-bip370
>
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> .
>

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<div dir=3D"ltr">Sjors,<div><br></div><div>Ledger has a PSBTv2 implementati=
on since a number of years back. It&#39;s used for communication between th=
eir Ledger Live software and the hardware wallet.=C2=A0<a href=3D"https://g=
ithub.com/LedgerHQ/ledger-live/blob/03b94dae50b1177801c57d9cee14cb5b4752b07=
5/libs/ledgerjs/packages/hw-app-btc/src/newops/psbtv2.ts">https://github.co=
m/LedgerHQ/ledger-live/blob/03b94dae50b1177801c57d9cee14cb5b4752b075/libs/l=
edgerjs/packages/hw-app-btc/src/newops/psbtv2.ts</a><br><br>/Kalle</div></d=
iv><br><div class=3D"gmail_quote gmail_quote_container"><div dir=3D"ltr" cl=
ass=3D"gmail_attr">On Fri, 17 Jan 2025 at 10:17, Sjors Provoost &lt;<a href=
=3D"mailto:sjors@sprovoost.nl">sjors@sprovoost.nl</a>&gt; wrote:<br></div><=
blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-l=
eft:1px solid rgb(204,204,204);padding-left:1ex">Dear list,<br>
<br>
It&#39;s been a few years since BIP370 was proposed [0]. It&#39;s a backwar=
ds compatible change to the PSBT standard defined by BIP174 [1]. Its main b=
enefit is the ability to add new inputs and outputs to a transaction.<br>
<br>
There&#39;s a Bitcoin Core pull request #21283 implements support [2], but =
has seen very little review so far. Being able to test it against other imp=
lementation would aid in review.<br>
<br>
So which projects are using PSBTv2 or would very much like to?<br>
<br>
So far I&#39;ve learned that Core Lightning uses it. They convert it back t=
o v0 when interacting with Bitcoin Core, which they find suboptimal [3].<br=
>
<br>
Feel free to answer here on Stack Exchange [4].<br>
<br>
Kind regards,<br>
<br>
Sjors Provoost<br>
<br>
[0] <a href=3D"https://github.com/bitcoin/bips/blob/master/bip-0370.mediawi=
ki" rel=3D"noreferrer" target=3D"_blank">https://github.com/bitcoin/bips/bl=
ob/master/bip-0370.mediawiki</a><br>
[1] <a href=3D"https://github.com/bitcoin/bips/blob/master/bip-0174.mediawi=
ki" rel=3D"noreferrer" target=3D"_blank">https://github.com/bitcoin/bips/bl=
ob/master/bip-0174.mediawiki</a><br>
[2] <a href=3D"https://github.com/bitcoin/bitcoin/pull/21283" rel=3D"norefe=
rrer" target=3D"_blank">https://github.com/bitcoin/bitcoin/pull/21283</a><b=
r>
[3] <a href=3D"https://github.com/bitcoin/bitcoin/pull/21283#issuecomment-2=
597171643" rel=3D"noreferrer" target=3D"_blank">https://github.com/bitcoin/=
bitcoin/pull/21283#issuecomment-2597171643</a><br>
[4] <a href=3D"https://bitcoin.stackexchange.com/questions/125384/who-uses-=
or-wants-to-use-psbtv2-bip370" rel=3D"noreferrer" target=3D"_blank">https:/=
/bitcoin.stackexchange.com/questions/125384/who-uses-or-wants-to-use-psbtv2=
-bip370</a><br>
<br>
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D97F-7C5F-474B-9EE6-82092C9073C5%40sprovoost.nl</a>.<br>
</blockquote></div>

<p></p>

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