Terms of service

Last updated: 2026-09-22

keldrion.com is operated by Keldrion, LLC. These terms are deliberately short: they describe what this site is, what you may do with what is on it, and how to reach us. Using the site means you accept them.

Not legal advice

Everything on this site - including the working paper, the notes on CBAM deadlines, the carbon price chart, and the estimator - is information, not legal, tax, accounting, or customs advice. The obligations described are those of the regulation itself. Consult the primary sources or your own advisor for your specific case.

The working paper

Prove, Don't Disclose: Verifiable CBAM Compliance Across Industrial Supply Chains Using Rules as Code and Zero-Knowledge Proofs (Kaimeter Working Paper 2026-01, v1.1) is published under the Creative Commons Attribution 4.0 International licence (CC BY 4.0). You may copy, redistribute, and build on it, including commercially, as long as you credit it. The suggested citation is on the first page of the paper.

The paper is research. It describes a proposed method and does not describe an accepted basis for a CBAM declaration. A copy is served from this domain for convenience; the canonical version is the one of record at doi.org/10.5281/zenodo.22740284.

The software

Kaimeter is free software, licensed under the Apache License 2.0. Your use of it is governed by that licence and not by these terms.

The rest of the site

The text, layout, and marks on this site are © 2026 Keldrion, LLC, apart from material under the licences above. Link to the site, quote it, and cite it freely; do not present it as your own work or imply that we endorse you.

The site is provided as it is. We try to keep dates, figures, and links correct, but regulation and market data move, and we do not promise that everything here is current or error-free.

The contact form

If you send us the form on the home page, you agree that we may contact you back on the details you give. That is all we use them for. Details of what we hold are in the privacy policy, and you can leave the list at any time by writing to team@keldrion.com.