docs(community): add notes for the 13 October review update

docs/community/working-sessions/2026-10-13-review-update-after-comment-period.md

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+# Review update: changes after the first comment period
+
+13 October 2026
+
+Document covered: PDPP v0.1.0 revisions from the formal review (draft in #374)
+
+These notes summarize the discussion. They do not change the draft specification.
+
+## Summary
+
+Tim presented the changes made to PDPP after the first public review of the
+v0.1 draft. Most fall into three groups: more control for data owners, more
+clarity for applications requesting data, and room for the protocol to grow.
+PDPP v0.1.0 locks on Monday 26 October 2026.
+
+## Discussion
+
+### Control for data owners
+
+Owners can narrow consent. A grant covers one purpose, and a request can ask
+for several. Each approved purpose becomes its own grant (#384).
+
+A grant can name a grantor when the person who approves it is not the data
+subject, such as a parent approving access to a child's records. The grantor's
+capacity is recorded with the grant. The protocol can express this relationship
+with verifiable evidence. Specific verification methods, such as DIDs or
+zero-knowledge proofs, would need separate profiles. Those profiles can build
+on one another.
+
+### Clarity for applications
+
+Consent text can be provided in several languages, using BCP 47 language tags.
+Different applications receive different identifiers for the same person, which
+protects privacy. Data freshness tracking, syncing fixes, and partial records
+are also covered. Work on data provenance is in draft in #373.
+
+### Tokens and authorization
+
+Single-use access tokens must have a finite lifetime, so non-expiring
+single-use tokens no longer conform. The design leaves room for authorization
+protocols beyond OAuth. OAuth 2.0 and RFC 9396 are the v0.1 binding, and other
+bindings, such as GNAP, may follow.
+
+AI training permissions and consent withdrawal are still being worked on. A
+"lease" mechanism for consent withdrawal is under consideration.
+
+### Data use
+
+The standard provides protections through grant agreements and terms. It cannot
+guarantee how data is used once it reaches an application. Stronger technical
+assurances, such as trusted execution environments, are outside the standard.
+
+### Standardization and composability
+
+The project chose not to mandate common data schemas. PDPP aims to stay a small
+core. It composes with existing standards, such as C2PA, through extensions and
+profiles.
+
+## Decisions
+
+- PDPP v0.1.0 locks on Monday 26 October 2026.
+- A grant covers one purpose (#384).
+- Non-expiring single-use access tokens no longer conform (#374).
+- Common data schemas are not mandated.
+
+## Open questions
+
+- How should consent withdrawal work? A "lease" mechanism is under
+  consideration.
+- Which verification methods, such as DIDs or zero-knowledge proofs, need
+  separate profiles?
+
+## Next steps
+
+- Tim to ship most, if not all, of the pull requests discussed over the next
+  few weeks.
+- Contributors: review and comment on the draft pull requests, especially #374
+  and #373, over the next week.
+- Community: give feedback on the proposed "lease" mechanism for consent
+  withdrawal once its pull request is up.
+- Community: join #pdp-connect on the LF Decentralized Trust Discord.
+- Viewers: go to pdpp.dev and declare support for the PDPP principles.
+
+[Watch the review update recording](https://www.youtube.com/watch?v=NyLKxMz-swU).