Looking for #ActivityPub implementations with #RFC9421 support! 🔍

As mentioned in the Fedify announcement below, I've implemented RFC 9421 (HTTP Message Signatures) and need to verify its interoperability with other ActivityPub implementations.

The challenge is that most major ActivityPub projects don't seem to have full RFC 9421 implementations in production yet. If you're working on an ActivityPub project that:

• has implemented RFC 9421 (even in a development branch)
• is currently implementing it
• has plans to implement it soon

Please reach out! I'd love to collaborate on interoperability testing to ensure our implementations work properly with each other before merging this into #Fedify's main branch.

Any leads or connections would be greatly appreciated! 🙏