# Certification Report — US SLED Contact Directory

## Posture
The Forge Proof Layer (`IRS_AUDITOR`) assigns this outcome's certification `state`,
Evidence Grade, and Trust Score from objective evidence only. This report explains
the posture; the authoritative values live in `proof/PROOF_DECISION.json`,
`proof/EVIDENCE_GRADE.md`, and `proof/TRUST_SCORE.json`.

## What is verified (with evidence)
- Completeness: 19,453 organizations across all 51 jurisdictions; one HTTP 200
  source request each (verify checks 1–3, 10).
- Real fields: organization name, type, phone (100% coverage), and address on every
  record (checks 4–5).
- No fabrication: the four seam columns are empty on every record (check 6).
- Integrity: dataset bytes match the sha256 recorded in the provenance manifest
  (checks 8–9); raw responses retained (check 15).
- Grouping + determinism: per-state partition, CSV consistency, canonical sort
  (checks 11–14); browsable site embeds the directory (checks 16–17).

## Why not the highest `state`
`PRODUCTION_VALIDATED` is intentionally **not** claimed: there is no official
external benchmark, no independent reproduction, and no live production telemetry.
Phone numbers were not re-confirmed by dialing. Correctness rests on the authority
of the NCES CCD source plus the captured integrity chain — which is why the
Evidence Grade sits below A (no external benchmark) by design.

## Disclosed seams (carried into delivery)
- Requested fields not published by the source: `contactName`, `contactTitle`,
  `email`, `domain` — empty, never invented.
- Scope: Education (K-12) layer only; state/local government + higher-ed deferred to
  v2 with named sources.
- Dataset vintage: school year 2023.

See `proof/LIMITATIONS.md` and `design/CAPABILITY_GAP.json` for the full seam list
and the plan to close each one.
