chore: release

[scouten-adobe]

🤖 New release

• c2pa: 0.67.1 -> 0.68.0 (⚠ API breaking changes)
• c2pa-c-ffi: 0.67.1 -> 0.68.0
• c2patool: 0.23.4 -> 0.23.5

⚠ c2pa breaking changes

--- failure feature_missing: package feature removed or renamed ---

Description:
A feature has been removed from this package's Cargo.toml. This will break downstream crates which enable that feature.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#cargo-feature-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.43.0/src/lints/feature_missing.ron

Failed in:
  feature serialize_thumbnails in the package's Cargo.toml

--- failure function_parameter_count_changed: pub fn parameter count changed ---

Description:
A publicly-visible function now takes a different number of parameters.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#fn-change-arity
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.43.0/src/lints/function_parameter_count_changed.ron

Failed in:
  c2pa::cose_sign::sign_claim_async now takes 4 parameters instead of 3, in /tmp/.tmpwi0GdC/c2pa-rs/sdk/src/cose_sign.rs:60
  c2pa::cose_sign::sign_claim now takes 4 parameters instead of 3, in /tmp/.tmpwi0GdC/c2pa-rs/sdk/src/cose_sign.rs:60

--- failure inherent_method_missing: pub method removed or renamed ---

Description:
A publicly-visible method or associated fn is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.43.0/src/lints/inherent_method_missing.ron

Failed in:
  Settings::reset, previously in file /tmp/.tmp1MELbD/c2pa/src/settings/mod.rs:397
  Ingredient::maybe_add_thumbnail, previously in file /tmp/.tmp1MELbD/c2pa/src/ingredient.rs:1443

--- failure method_parameter_count_changed: pub method parameter count changed ---

Description:
A publicly-visible method now takes a different number of parameters.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#fn-change-arity
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.43.0/src/lints/method_parameter_count_changed.ron

Failed in:
  c2pa::assertions::BmffHash::add_merkle_for_fragmented now takes 8 parameters instead of 7, in /tmp/.tmpwi0GdC/c2pa-rs/sdk/src/assertions/bmff_hash.rs:1039

Changelog

c2pa

0.68.0

17 October 2025

Added

• Make settings not thread-local (#1444)
• Add CAWG validation to Reader (#1370)

Documented

• Update README.md to add CAI membership & Discord links (#1482)
• Fix docs.rs build by removing removed features (#1480)

Fixed

• Remove serialize_thumbnails feature (#1492)
• Don't log OCSP status if the result cannot be validated. (#1489)
• Expose underlying timestamp assertion support (#1371)
• Turn on trust by default (#1483)
• Empty actions array should be allowed for v1 claim compatibility [CAI-9573] (#1477)
• Add support for new data hash exclusions when update manifests are pr… (#1478)

Other

• Update httpmock to 0.8.0 (#1472)

c2pa-c-ffi

0.68.0

17 October 2025

Fixed

• Turn on trust by default (#1483)
• Add linker flags to Android library builds (#1463)

c2patool

0.23.5

17 October 2025

Fixed

• Turn on trust by default (#1483)

Other

• Update httpmock to 0.8.0 (#1472)

---

This PR was generated with release-plz.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.96%. Comparing base (e4bc1ea) to head (4368f6e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1475   +/-   ##
=======================================
  Coverage   77.96%   77.96%           
=======================================
  Files         162      162           
  Lines       40191    40191           
=======================================
+ Hits        31334    31335    +1     
+ Misses       8857     8856    -1     

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[codspeed-hq]

CodSpeed Performance Report

Merging #1475 will not alter performance

_{Comparing release-plz-2025-10-03T16-39-21Z (4368f6e) with main (e4bc1ea)}

Summary

✅ 16 untouched
⏩ 2 skipped¹

Footnotes

1. 2 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩