BIP118 confusion / SIGHASH_NOINPUT is now SIGHASH_ANYPREVOUT (i think)
2 messages, 12 Jun 2021. Started by Ryan Grant.
Ryan Grant (2)
Hi,
I have detected some definite confusion among people who are not aware of the most recent updates to the bip118 draft. I don't know if that's common among readers of these lists.
Substantial edits to the bip118 draft were made through May 2019, including changing its official name to SIGHASH_ANYPREVOUT. The internal heading "Revisions" discusses these changes.
https://github.com/ajtowns/bips/blob/c7c6a58b7a66a5dc5f4435319577d26a34082a79/bip-0118.mediawiki#Revisions https://github.com/ajtowns/bips/compare/master...ajtowns:bip-anyprevout https://github.com/ajtowns/bips/blob/c7c6a58b7a66a5dc5f4435319577d26a34082a79/bip-0118.mediawiki
The version in bitcoin/bips was not modified since 2018, until it diverged by collecting a minor fix two months ago. It still uses SIGHASH_NOINPUT terminology.
https://github.com/bitcoin/bips/blob/master/bip-0118.mediawiki
AFAICT, with taproot activating, the preferred method to ease lightning network client state requirements will now definitely be SIGHASH_ANYPREVOUT.
I am not aware of reasons for bip118's updated draft to sit on the sidelines before consideration by a wider audience.
Apologies, I found the discussion going on here: https://github.com/bitcoin/bips/pull/943
On Sat, Jun 12, 2021 at 7:52 PM Ryan Grant <bitcoin-dev@rgrant•org> wrote:
Quoted text (27 lines)
> > Hi, > > I have detected some definite confusion among people who are not aware > of the most recent updates to the bip118 draft. I don't know if > that's common among readers of these lists. > > Substantial edits to the bip118 draft were made through May 2019, > including changing its official name to SIGHASH_ANYPREVOUT. The > internal heading "Revisions" discusses these changes. > > https://github.com/ajtowns/bips/blob/c7c6a58b7a66a5dc5f4435319577d26a34082a79/bip-0118.mediawiki#Revisions > https://github.com/ajtowns/bips/compare/master...ajtowns:bip-anyprevout > https://github.com/ajtowns/bips/blob/c7c6a58b7a66a5dc5f4435319577d26a34082a79/bip-0118.mediawiki > > The version in bitcoin/bips was not modified since 2018, until it > diverged by collecting a minor fix two months ago. It still uses > SIGHASH_NOINPUT terminology. > > https://github.com/bitcoin/bips/blob/master/bip-0118.mediawiki > > AFAICT, with taproot activating, the preferred method to ease > lightning network client state requirements will now definitely be > SIGHASH_ANYPREVOUT. > > I am not aware of reasons for bip118's updated draft to sit on the > sidelines before consideration by a wider audience.