Signed Brief · Provenance Ledger
Brief Receipt
299e76e5-b707-469d-bf62-82382b439416
This edition
This receipt signed the edition wpsr-2026-10-16, published on 22 October 2026 by Daniel Zhang, the named editor accountable for it. The editor is named from the edition’s publication record; the signed receipt attests the text, its sources and the model.
Status: published — this is the current edition.
Signature and hash
The signature is checked against the published key. The hash row checks that the content hash shown under “Attested facts” is the one the signature covers: the receipt stores that hash, not the text.
Sources
Each cited source is re-read on this view unless Kitalpha no longer reads it by policy. “matches” means it answered HTTP 200 just now, as it did when the receipt was signed; the receipt records each source’s status and time at signing, not a copy of its page.
| Source | At signing | Now |
|---|---|---|
| https://www.eia.gov/petroleum/supply/weekly/ | 200 · 22 October 2026 | matches — HTTP 200 just now |
Verdict
Signature is valid and all cited sources are live right now.
Attested facts
| Content hash (SHA-256) | 1ee1fa19bcf45583e93746bc687f895b6a49b8196483ad300b9d68e940ea27cf |
|---|---|
| Model | kitalpha-wpsr-brief · wpsr-draft+wpsr-firewall-v1 |
| Generated at | 2026-10-22T11:29:02.98+00:00 |
| Public key | 49326fb2fc3e4361a67037bea7bc64aeb8819c38ea169c560089222e719a2c62 |
Raw signed payload & signature
signature: 7d1d05aa9a930fca6f4bfb559a8a2b20da3f3dcfbf436a7b9442acb9ad060f77a2daeca2ed892631319e4f041937d4fa73001d6d9275bc0c997b5e2b98fbe90d
{
"v": 1,
"model": {
"id": "kitalpha-wpsr-brief",
"version": "wpsr-draft+wpsr-firewall-v1"
},
"sources": [
{
"url": "https://www.eia.gov/petroleum/supply/weekly/",
"status": 200,
"checked_at": "2026-10-22T11:29:01.616Z"
}
],
"content_hash": "1ee1fa19bcf45583e93746bc687f895b6a49b8196483ad300b9d68e940ea27cf",
"generated_at": "2026-10-22T11:29:02.980Z"
} Re-verify independently with the published key at /.well-known/kitalpha-provenance.json. Learn how this works on the provenance page.
Voluntary transparency aligned with the spirit of EU AI Act Article 50 (transparency obligations for AI-generated content, applying 2 August 2026). This is trust infrastructure and general information only — not a legal-compliance claim and not legal advice.