This page in the documentation for Mastodon talks about what they use: https://docs.joinmastodon.org/spec/security/
There's only two cases where Linked Data Signatures are used.
> On 19 Dec 2023, at 23:30, a <a@trwnh.com> wrote:
>
> > I think there is an issue with the linked data signatures that are used in Mastodon.
> Probably a huge lift to move this forward?
> >
> > https://github.com/mastodon/mastodon/blob/main/app/lib/activitypub/linked_data_signature.rb/#L6-L7
>
> More problematic is the non-existent "RsaSignature2017" which is hardcoded into Mastodon shortly below the line you cited. By the time the v1 came around, it was finalized as "RsaSignature2018" instead.
>
> > When you create the signature context you need to use CONTEXT = 'https://w3id.org/identity/v1'
>
> This is only relevant for LDSigs generated by Mastodon, not for validation.