Controlled comparison

What stayed fixed

Facts
Degraded · 840 ms p95 · no reported data loss · rollout paused
Prompt hash
loading
Scenario hash
loading
Endpoint fingerprint
loading

Nine recorded provider responses

Contract × deployment matrix

MATCH means this response met the scenario assertions and its selected VOICE.md lint rules. It is not a general model score.

Deterministic result for every contract and generation lane
VOICE.md contract
Matched all selected checks One or more selected checks not met

Authority boundary

Transcribe exactly. Shape only the response.

The raw ASR lane records provider segments without applying VoiceMD. The second stage applies executive_brief only when generating the human-facing response.

Input provenance limit. The decoded PCM input is bound by SHA-256 and byte count, but the input WAV is not published in this snapshot. This site alone cannot replay the transcription call.

Evidence boundary

What this snapshot proves

Every transcript, audio file, event trace, resolved contract, and manifest below is a repo-hosted artifact covered by the committed checksum inventory.

01

Supported

  • Eleven evidence bundles meet local hash and manifest verification.
  • The matrix used one prompt, scenario, endpoint fingerprint, and acoustic voice.
  • Exact captured transcripts and generated audio are available for inspection.
  • Every deterministic contract outcome remains visible.

02

Not supported

  • These deployment names do not identify fixed model snapshots.
  • Client-observed timings are not performance benchmarks or an SLA.
  • The files are not a provider-signed attestation.
  • This single synthetic scenario does not establish general response quality.

03

Reproducible locally

Verify the closed inventory without Azure credentials or network access:

python3 scripts/verify_pages.py site

Use VoiceMD

The proof is one application of the standard.

The core CLI validates local VOICE.md files. Azure voice support is an optional extra; publishing the package remains a separate release step from this proof snapshot.

Core contract

pip install voicemd
voicemd init
voicemd validate

Azure Voice proof lab

pip install "voicemd[azure-voice]"

Method

Read the artifacts, not the headline.

The page loads only local allowlisted files. Transcript text is inserted with DOM textContent; it is never interpreted as HTML. There are no analytics, external scripts, fonts, or live Azure calls.

Loading recorded proof snapshot…