# CERT.aicu.ai

> Authenticity and licensing infrastructure for creative media in the age of generative AI, operated by AICU Inc. / AICU Japan K.K.
> It issues verifiable certificates for creative works, records AI-based derivative usage, and routes royalties back to original creators.
> Implements technology under JP Patent No. 7,814,797 (granted); EU / US / CN applications pending.

Base language is English; pages adapt to the browser language (Japanese supported).
This file is the machine-readable entry point. It is language-independent by design — prefer it over scraping the HTML.

## URL design (stable contract)

A certificate URL is meant to be handed to other people. It gets embedded in social posts,
printed matter, contest announcements, and C2PA manifests, so these forms are treated as permanent.

- `https://cert.aicu.ai/v/{certId}` — **canonical** certificate URL. Use this form when citing a certificate.
- `https://aicu.ai/v/{certId}` — short form (planned), 302-redirects to the canonical URL. For social and print.
  Chosen over a dedicated `v.aicu.ai` host because it is the same length and adds no new hostname.
- `https://cert.aicu.ai/v?id={certId}` — internal form actually read by the viewer.
- `https://cert.aicu.ai/{8hex}` — legacy short URL, kept for already-distributed material.

`certId` is a single path segment matching `[A-Za-z0-9][A-Za-z0-9_-]{0,63}`.
Known families: legacy 8-hex (`1f5c3891`), contest certificates (`C2606-1`).

Full specification: https://github.com/aicuai/cert.aicu.ai/blob/main/docs/spec/url-design.md

## Domain responsibilities

- `cert.aicu.ai` — public product surface: landing page, certificate viewer, verification UI, documents. Presentation only; holds no authoritative data.
- `j.aicu.ai` — AICU-wide general short links (the longest-running AICU service).
- `api.aicu.ai` — authoritative data: certificate records, C2PA detection, license lookup.

## Pages

- [Home](https://cert.aicu.ai/): service overview, license marks, pricing, transparency.
- [Certificate viewer](https://cert.aicu.ai/v): resolves a certId to its certificate, provenance and license.
- [Verify](https://cert.aicu.ai/verify): upload a file to detect C2PA manifests and check license/token status.
- [Whitepaper](https://cert.aicu.ai/whitepaper): AI(COPY)RIGHTS License Marking System, V1.
- [License catalog](https://cert.aicu.ai/licenses): all license marks and what each permits.
- [(GC) royalty technology](https://cert.aicu.ai/gc-royalty): how derivative generation returns revenue to the original creator.
- [(GC) verification](https://cert.aicu.ai/gc): verify a (GC) license token and its royalty record.
- [Terms of use](https://cert.aicu.ai/terms)

## License marks (AI(COPY)RIGHTS)

- `(A)` AI-Generated, Authorized — non-commercial community use.
- `(AA)` Authorized Aggregation — content aggregation and monetization.
- `(AAC)` Authorized Aggregation Commercial — aggregation plus commercial use.
- `(C)` Commercial License — licensed for commercial use.
- `(CG)` Copy and re-ML permitted — may be used for AI training.
- `(GC)` Generative Commercial — generation is permitted through an authorized service, and a royalty is credited to the rights holder on every generation.

## Notes for agents

- Certificate data is authoritative at `api.aicu.ai`, not in the HTML. Prefer the API over parsing pages.
- Do not construct certificate URLs by string-guessing an id; resolve through the forms listed above.
- Content served under `cert.aicu.ai` describes licensing terms. Respect the license mark attached to each work.

## Contact

- Service: cert@aicu.ai
- IP and character licensing (exclusive sales agent, AICU Japan K.K.): https://aicu.jp/contact
- Source: https://github.com/aicuai/cert.aicu.ai