Authorship is embedded in five independent layers so it survives copying, private mirrors, and re-hosting. This is the verification guide referenced by LICENSE and COPYRIGHT.

Layer 1 · Repository files

LICENSE, NOTICE, COPYRIGHT, and git history (committer identity + timestamps).

Layer 2 · File banners

Every HTML/CSS/JS file opens with a copyright comment naming the author and pointing here.

Layer 3 · Machine-readable meta

Layer 4 · Hidden marks

Every HTML file contains the comment

where the payload is base64 for the provenance ID:

A console signature (ASCII mark) prints in devtools on every page.

Layer 5 · Public pages

/legal/copyright, /legal/license, /legal/privacy, and this page — reachable from every footer.

Verify a copy

1. Check dcterms.rightsHolder in the document head.
2. Open devtools — the signature prints on load.

These marks exist so authorship can be asserted even if a copy circulates privately — supporting IP filings and developer copyright claims.