Brief Receipt

ff37eb51-201a-4387-bf14-27f63598757d

Ed25519 signature Valid

Signed by published key Yes

All sources live (200) Yes

Attested facts

Content hash (SHA-256)	b3850051aa51f99ab5239e4465fe4d2ff4a232a5c8dd4367fec3e8b49a87ba52
Model	claude-sonnet-4-6 · 2026-06-19
Generated at	2026-06-21T12:43:00.271+00:00
Public key	49326fb2fc3e4361a67037bea7bc64aeb8819c38ea169c560089222e719a2c62

Cited sources — live status

Source	At signing	Now
https://data.bls.gov/timeseries/CUUR0000SA0	200	200 OK
https://fred.stlouisfed.org/graph/fredgraph.csv?id=CPIAUCSL	200	200 OK

Raw signed payload & signature

signature: ee623baa67db570fcd879af3fb88ae6d489ec4c4659a108d4fca946f75df8d5355f7295319489dde3ea2f1f4655322bcdb4b3503dfc900d9eb2f11607f2e1b02

{
  "v": 1,
  "model": {
    "id": "claude-sonnet-4-6",
    "version": "2026-06-19"
  },
  "sources": [
    {
      "url": "https://data.bls.gov/timeseries/CUUR0000SA0",
      "status": 200,
      "checked_at": "2026-06-21T12:42:58.411Z"
    },
    {
      "url": "https://fred.stlouisfed.org/graph/fredgraph.csv?id=CPIAUCSL",
      "status": 200,
      "checked_at": "2026-06-21T12:42:58.411Z"
    }
  ],
  "content_hash": "b3850051aa51f99ab5239e4465fe4d2ff4a232a5c8dd4367fec3e8b49a87ba52",
  "generated_at": "2026-06-21T12:43:00.271Z"
}

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.