Re: New Work Item Proposal: Data Integrity BIP340 Cryptosuite

In
On Thu, Jul 31, 2025 at 12:11 PM Will Abramson <wip.abramson@gmail.com>
wrote:

> Hello CCG community,
>
> Digital Contract Design in collaboration with Legendary Requirements and
> Danube Tech are proposing a new CCG Work Item for adoption:
> https://dcdpr.github.io/data-integrity-schnorr-secp256k1/
>
> See the proposal issue here:
> https://github.com/w3c-ccg/community/issues/254
>
> We feel this is important as there are currently no up to date Data
> Integrity cryptosuites available for the secp256k1 curve, which has wide
> adoption throughout multiple blockchain ecosystems.
>

I do endorse this work item heartily, especially as FROST and MuSig require
Schnorr.

After a quick review of your draft, I suggest there needs to be some
investigation on if a distinction between bip340-schnorr and the tweaked
version (ie bip340-tr-schnorr) should be considered. Though tweaking
(committing to a hash) is required for Bitcoin taproot, I have heard there
are some other scenarios where tweaking may be required to prevent attacks,
especially with bip32 derivatives.

I’m not an expert on this topic, however. Thus I suggest you reach out to
some cryptographers.

— Christopher Allen

>