LICENSES.md

# Component licences

Copyright © 2026 Louis Robinson for original CES contributions.

- **Reconstruction code:** [MIT](licenses/MIT.txt).
- **Original CES annotations, generated edit recipes, reference manifests and
  documentation:** [CC BY 4.0](licenses/CC-BY-4.0.txt), to the extent the author
  holds rights. Attribute Louis Robinson, *Causal Edit Serialization*, link to
  https://github.com/Louiii/CES and the licence, and identify modifications.
- **ClimbMix source material:** [CC BY-NC 4.0](licenses/CC-BY-NC-4.0.txt), as
  specified by NVIDIA's original distribution. This covers source passages in
  pretraining candidates, copy-scan records and controlled-repair data; CES adds
  corruptions, annotations and serialization. Karpathy's shuffled card states
  MIT, but CES does not interpret shuffling as removing the original restrictions.
- **CoEdIT:** complete source/target sentences, serialized copies and complete
  corrupted sentences are excluded. Reference IDs/hashes and generated edit
  recipes require a separately obtained upstream copy. The official distribution
  states Apache 2.0; underlying NUCLE/Lang-8 terms raise unresolved redistribution
  questions described in the README. Reconstruction does not relicense that text.

Source passages, including reversible token representations, are not licensed
as original CES contributions. Original CES model weights under `checkpoints/` are CC BY 4.0 to the extent
of rights held by Louis Robinson. Training-data terms are not automatically
assigned to weights; this grant does not relicense source text or warrant the
absence of third-party rights in every downstream use. No benchmark result
records are included in this release. No permissions are asserted for
third-party rights the author does not hold.

Source terms checked on 3 October 2026. [NOTICE.md](NOTICE.md) records attribution
and modifications. These notices do not imply endorsement by upstream authors.