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0.13.0

orchard release version 0.13.0
@nuttycom nuttycom tagged this 22 Apr 23:52 
[0.13.0] - 2026-04-22
=====================

Added
-----
- `orchard::primitives::redpallas::VerificationKey<T>::is_identity`, which
  returns `true` if the verification key is the identity `pallas::Point`.
- `orchard::primitives::redpallas::testing::arb_valid_spendauth_keypair`
  (under the `test-dependencies` feature): a uniformly-distributed valid
  `(rsk, rk)` key pair with non-identity `rk`.

Changed
-------
- MSRV is now 1.85.1
- Migrated from yanked `core2` library to `corez`
- `orchard::pczt::Bundle::extract` now takes its `self` argument by
  reference instead of by value.
- `orchard::zip32::Error` has added variant `MaxDerivationDepth`
- `orchard::Action::from_parts` and `orchard::circuit::Instance::from_parts`
  now return `Option<Self>`, yielding `None` when `rk` is the identity
  `pallas::Point`. Callers that previously treated the return as `Self`
  must now handle the `None` case. This aligns the crate with the
  consensus rule introduced in zcashd v6.12.1 and Zebra 4.3.1 (see
  <https://zodl.com/zcashd-zebra-april-2026-disclosure/> and
  <https://zfnd.org/zebra-4-3-1-critical-security-fixes-dockerized-mining-and-ci-hardening/>);
  the Zcash protocol specification will be updated to match.
- `orchard::pczt::TxExtractorError` has added variant `IdentityRk`.
- `orchard::pczt::ProverError` has added variant `IdentityRk`.
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