- From: Wolf McNally <wolf@wolfmcnally.com>
- Date: Wed, 23 Jul 2025 18:56:02 -0700
- To: public-credentials@w3.org
- Cc: Christopher Allen <christophera@lifewithalacrity.com>
> Manu Sporny <msporny@digitalbazaar.com> wrote: >> Christopher and Wolf, Provenance Marks seem very close to what CEL is >> trying to do. I'm most curious about the pre-commitment approach that >> PMs use. It feels like we might be able to combine CEL/PMs or at least >> re-use some of the functionality from PMs in CEL. Ideally, for me, >> we'd join forces and merge the two but I'm saying that without >> understanding every technical decision made in the PM spec. Hello Manu, As you mentioned, we did do a comparison between CEL and Provenance Marks (PM) that group members may wish to review: https://hackmd.io/@bc-community/HycjswAIyx Our video introducing Provenance Marks is here, which is a re-presentation of the talk I gave to the W3C CCG on June 3: https://www.youtube.com/watch?v=vKAK6j4mqgE The deck from that presentation is here: https://developer.blockchaincommons.com/assets/pdfs/2025-06-provenance-marks.pdf Our core paper and specification for PM is here: https://github.com/BlockchainCommons/Research/blob/master/papers/bcr-2025-001-provenance-mark.md We’re happy to meet with anyone who has questions regarding PM, and we’d certainly be happy to discuss joining forces. I encourage anyone who would like to have that sort of conversation to book a spot on my calendar: https://calendly.com/wolfmcnally/30min The key concept of forward commitment is, as I mentioned in the talk, not original and can be freely used by anyone. And as I mention in the CEL-to-PM comparison, PM can easily be extended to encompass the features of CEL, as it is designed as a foundational yet flexible building block for larger systems. The main point of difference I think is PM’s use of compact binary structures augmented by deterministic CBOR (dCBOR) which opens it up to use much more sophisticated formats like Gordian Envelope. I look forward to future conversations. ~ Wolf McNally Lead Researcher, Blockchain Commons
Received on Thursday, 24 July 2025 01:56:18 UTC