Open, verifiable CBAM compliance: the CBAM methodology encoded as executable, hash-identified rule bundles, with zero-knowledge proofs that a declared embedded-emissions figure is the correct output of the identified rules — without disclosing the underlying activity data. The design and its legal fit are set out in the working paper Prove, Don't Disclose (Kaimeter Working Paper 2026-01).
- Working paper and build instructions:
paper/ - Repository status:
docs/STATUS.md - Citation:
CITATION.cff— preferred citation is the paper
| Release | Target | Content | Status |
|---|---|---|---|
paper-v1.1 |
September 2026 | Working paper preprint, DOI 10.5281/zenodo.22740284 | Published 2026-09-15 |
v0.1 |
October 2026 | kaimeter-rules: period, sector-dependent mark-ups, default-value selection, Art. 14 precursor averaging, scope table for current Annex I aluminium codes; primary aluminium with slope-method PFCs; the Appendix B vector passing at full precision; bundle-hash; no prover |
Released 2026-09-16 |
v0.2 |
November 2026 | First fixed-interpreter zkVM guest evaluating the aluminium bundle as witness with in-circuit bundle hash; native/guest differential tests; overvoltage method; secondary aluminium; two-supplier precursor vector | Planned |
v0.3 |
Q1 2027 | Steel sector; proof envelope and offline verifier; stable interpreter image IDs; attestation-policy schema and key resolution; signed bundle distribution; reproducible-build pipeline with SBOM and provenance | Planned |
| Later | 2027–2028 | Cement and fertilisers (indirect emissions); hydrogen; Article 9 once adopted; downstream module as adopted; recursive proof composition; independent circuit audit | Planned |
| Path | Purpose |
|---|---|
crates/ |
Reference implementation crates (kaimeter-rules) |
paper/ |
Working paper sources, LaTeX template, build script and conformance vectors |
xtask/ |
Repository automation, including the comment-policy check |
.github/workflows/ |
Rust quality gates and the paper build and validation workflow |
- Text (working paper and documentation): CC BY 4.0
- Code: Apache License 2.0