Brief Receipt

c525a5a9-7f46-4148-be53-4d7ed5c3ac88

Ed25519 signature Valid

Signed by published key Yes

All sources live (200) Yes

Attested facts

Content hash (SHA-256)	c390bc045fe2cda304f8b4ee5c956dc23fc1b079d228bd64b3c4b58044ada8fb
Model	claude-sonnet-4-6 · 2026-06-19
Generated at	2026-06-21T12:43:03.425+00:00
Public key	49326fb2fc3e4361a67037bea7bc64aeb8819c38ea169c560089222e719a2c62

Cited sources — live status

Source	At signing	Now
https://data.bls.gov/timeseries/LNS14000000	200	200 OK
https://fred.stlouisfed.org/graph/fredgraph.csv?id=UNRATE	200	200 OK

Raw signed payload & signature

signature: feee6f0ad5fee369c54105e88ebdd7e74d381c2d26cee1f6a0ec465ce66ecdf8327e2ae9d2dbbe66601746f831a006b4b8adfd2259a28764fec3214ce982d10b

{
  "v": 1,
  "model": {
    "id": "claude-sonnet-4-6",
    "version": "2026-06-19"
  },
  "sources": [
    {
      "url": "https://data.bls.gov/timeseries/LNS14000000",
      "status": 200,
      "checked_at": "2026-06-21T12:43:02.950Z"
    },
    {
      "url": "https://fred.stlouisfed.org/graph/fredgraph.csv?id=UNRATE",
      "status": 200,
      "checked_at": "2026-06-21T12:43:02.950Z"
    }
  ],
  "content_hash": "c390bc045fe2cda304f8b4ee5c956dc23fc1b079d228bd64b3c4b58044ada8fb",
  "generated_at": "2026-06-21T12:43:03.425Z"
}

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.