Changelog

All notable changes to metamorphic_log are documented here. The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.1.0

Initial release: the Elixir/Hex client for the metamorphic-log transparency-log engine, as a sibling package to metamorphic_crypto, built on precompiled Rust NIFs (Rustler + rustler_precompiled) wrapping the published metamorphic-log crate.

Added

• Verification + monitor SDK, mirroring the browser WASM SDK surface:
  • MetamorphicLog.Proof — RFC 6962/9162 inclusion & consistency verification.
  • MetamorphicLog.Checkpoint / MetamorphicLog.Note — C2SP signed-note and tlog-checkpoint parse/verify, with classical Ed25519 and additive hybrid post-quantum (ML-DSA + Ed25519) signatures.
  • MetamorphicLog.Coniks / MetamorphicLog.Commitment — CONIKS lookup/absence proof verification and SHA3-512 commitment verification.
  • MetamorphicLog.Policy — signed namespace-policy verification and declared == observed posture enforcement.
  • MetamorphicLog.Leaf — the mosslet/key-history/v1 canonical leaf encoding, entry hash, and RFC 6962 leaf hash.
• Ingestion primitives (MetamorphicLog.Ingest) — content/token dedup keys, tile flush geometry, and Merkle recomputation over tile bytes for an Elixir operator pipeline. Sequencing state and tile I/O are intentionally left to the BEAM side.
• CPU-bound NIFs (proof/VRF/signature verification, Merkle recomputation) run on dirty CPU schedulers; micro-operations run inline.
• Cross-language byte-parity KAT (test/cross_language_kat_test.exs): the NIF reproduces the same locked vectors as the Rust core and WASM SDK (metamorphic-log/tests/cross_language.rs).