[w3ctag/design-reviews] RDF Canonicalization (Issue #855)

こんにちは TAG-さん!

I'm requesting a TAG review of [RDF Data Canonicalization](https://www.w3.org/TR/2023/WD-rdf-canon-20230609/).

There are a variety of use cases that depend on the ability to calculate a unique and deterministic hash value of RDF Datasets, such as [Verifiable Credentials](https://www.w3.org/TR/vc-data-model), the publication of biological and pharmaceutical data, or consumption of mission critical RDF vocabularies that depend on the ability to verify the authenticity and integrity of the data being consumed. See the [use cases](https://www.w3.org/2022/07/rch-wg-charter/explainer.html#usage) for more examples. These use cases require a standard way to process the underlying graphs contained in [RDF Datasets](https://www.w3.org/TR/rdf11-concepts/#section-dataset) that is independent of the serialization itself.

  - An [explainer](https://www.w3.org/2022/07/rch-wg-charter/explainer.html) was created to support the WG's [charter](https://www.w3.org/2022/07/rch-wg-charter/). The current draft of the specification [2023-06-09](https://www.w3.org/TR/2023/WD-rdf-canon-20230609/#use-cases) indicates that we plan to link to the explainer document but also to augment that section of the spec with further detail that will cover aspects that have come to light as the spec has evolved.
  - Specification URL: https://www.w3.org/TR/2023/WD-rdf-canon-20230609/
  - Tests: are at https://w3c.github.io/rdf-canon/tests/
  - Current implementations are listed at https://github.com/w3c/rdf-canon/wiki/List-of-available-implementations
  - User research: [url to public summary/results of research] N/A
  - Security and Privacy self-review²: https://github.com/w3c/rdf-canon/issues/70 (reviews have been requested simultaneously with this request to the TAG)
  - GitHub repo (if you prefer feedback filed there): https://github.com/w3c/rdf-canon/issues/118 please
  - Primary contacts (and their relationship to the specification):
      - Greg Kellogg ([gkellogg](https://github.com/gkellogg)), [Invited Expert] (editor)
      - Dave Longley ([dlongley](https://github.com/dlongley)), [Digital Bazaar] (editor) 
      - Dan Yamamoto ([yamdan](https://github.com/yamdan)), [Invited Expert] (editor)
      - Phil Archer ([philarcher](https://github.com/philarcher)), [GS1] (WG co-chair)
      - Markus Sabadello ([peacekeeper](https://github.com/peacekeeper)), [Danube Tech] (WG co-chair)
  - Organization(s)/project(s) driving the specification: Although not exclusively about Verifiable Credentials, that technology is a major driver and there is a lot of overlap in personnel in that group.
  - Key pieces of existing multi-stakeholder review or discussion of this specification - please note the extensive list of existing implementations.
  - External status/issue trackers for this specification (publicly visible, e.g. Chrome Status): N/A

Further details:

  - [✓] I have reviewed the TAG's [Web Platform Design Principles](https://www.w3.org/TR/design-principles/)
  - Relevant time constraints or deadlines: We hope to go to CR in July or August at the latest, i.e. *before* TPAC. The VCWG's work on [ECDSA](https://w3c.github.io/vc-di-ecdsa/) has a dependency on RDF Dataset Canonicalization 
  - The group where the work on this specification is currently being done: [RDF Dataset Canonicalization and Hash](https://www.w3.org/groups/wg/rch)
  - The group where standardization of this work is intended to be done (if current group is a community group or other incubation venue): N/A
  - Major unresolved issues with or opposition to this specification: There are open issues at this time but no disputes
  - This work is being funded by:

You should also know that...

The spec has a long history and has implementations using the original version in production software.

We'd prefer the TAG provide feedback as (please delete all but the desired option):

  💬 leave review feedback as a **comment in [this issue](https://github.com/w3c/rdf-canon/issues/118)** and @-notify [gkellogg](https://github.com/gkellogg), [dlongley](https://github.com/dlongley), [yamdan](https://github.com/yamdan), [philarcher](https://github.com/philarcher), [peacekeeper](https://github.com/peacekeeper).



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