Experimental did:cell Witness Service (open-source)

Hi,
I’m excited to share an experimental witness service I’ve been working on.
It’s a lightweight, open-source implementation that runs as a Google Cloud
Function using KMS with HSM-backed EC keys, and can be adapted to almost
any infrastructure with minimal effort.

The service achieves O(1) proof generation by using pre-generated templates
for ecdsa/eddsa-rdfc/jcs VC DI proofs. Because the model is fully known,
there’s no runtime canonicalization or JSON-LD/RDFC/JCS processing
required; making the service fast, simple (<1000 lines), and cost-effective.

While designed for did:cel, the service can also be used to witness
arbitrary events, providing a lightweight, verifiable, and high-performance
proof layer for other decentralized or event-driven applications.

I would greatly value your feedback! Please feel free to fork the
repository, raise issues ...

https://github.com/filip26/iron-did-cel-witness

Looking forward to hearing your thoughts!

Best regards,
Filip
https://www.linkedin.com/in/filipkolarik/