Signed Brief · Provenance Ledger

✓ Verified

Signature is valid and all cited sources are live right now.

Brief Receipt

dbe26398-0d46-4abd-93ee-3d9b9f587436

Ed25519 signature Valid
Signed by published key Yes
All sources live (200) Yes

Attested facts

Content hash (SHA-256)3101feb08ddb0e8ebe81be2738812177c5c7b5765bc2bff7b9b135e551058ad4
Modelclaude-sonnet-4-6 · 2026-06-19
Generated at2026-06-21T12:43:05.87+00:00
Public key49326fb2fc3e4361a67037bea7bc64aeb8819c38ea169c560089222e719a2c62

Cited sources — live status

SourceAt signingNow
https://www.federalreserve.gov/monetarypolicy/fomccalendars.htm 200 200 OK
https://fred.stlouisfed.org/graph/fredgraph.csv?id=DFEDTARU 200 200 OK
Raw signed payload & signature

signature: 0eefdf621ec8d38f170f853ab8ae6f185d74e1427dce5abddd9a565b8e9e5a820f4d3abbf7e8456106732e65754c78e41702448f2a89d4dbaa28c34640277c0c

{
  "v": 1,
  "model": {
    "id": "claude-sonnet-4-6",
    "version": "2026-06-19"
  },
  "sources": [
    {
      "url": "https://www.federalreserve.gov/monetarypolicy/fomccalendars.htm",
      "status": 200,
      "checked_at": "2026-06-21T12:43:03.740Z"
    },
    {
      "url": "https://fred.stlouisfed.org/graph/fredgraph.csv?id=DFEDTARU",
      "status": 200,
      "checked_at": "2026-06-21T12:43:03.740Z"
    }
  ],
  "content_hash": "3101feb08ddb0e8ebe81be2738812177c5c7b5765bc2bff7b9b135e551058ad4",
  "generated_at": "2026-06-21T12:43:05.870Z"
}

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.