{
  "schemaVersion": 1,
  "reportId": "scoretransposer-pdf-to-musicxml-evidence-2026-08-29",
  "publishedAt": "2026-08-29",
  "product": "ScoreTransposer",
  "scope": "Public evidence ledger for PDF and image score recognition. This file distinguishes workflow and runtime evidence from musical accuracy metrics.",
  "evidence": {
    "candidateRoutingRegression": {
      "source": "samples/reports/latest.json",
      "generatedAt": "2026-06-30T12:53:36.181Z",
      "total": 20,
      "matchedExpectedOutcome": 20,
      "cleanFinal": 11,
      "difficultDraft": 6,
      "unusableNonFinal": 3,
      "meaning": "Every repository-controlled sample followed its expected final, draft, or non-final workflow lane.",
      "doesNotMean": "This is not note, duration, key-signature, lyric, or complete MusicXML accuracy."
    },
    "runtimeQualification": {
      "source": "docs/audits/evidence/music-engine-qualification-2026-08-17.json",
      "generatedAt": "2026-08-17T06:53:28.001Z",
      "audiveris": {
        "version": "5.10.2",
        "commit": "1b7cf44088c68f4168801822a613751d1bb1b584",
        "status": "passed"
      },
      "meaning": "The recorded deployment-like environment could execute the named Audiveris runtime.",
      "doesNotMean": "Runtime availability alone does not establish recognition correctness."
    },
    "realEngineFixtureManifest": {
      "source": "services/worker/src/audiveris-real-fixtures/manifest.json",
      "fixtureCount": 9,
      "rights": "repository-authored",
      "scenarios": [
        "multipage",
        "rotation-90",
        "rotation-180",
        "rotation-270",
        "crop",
        "low-confidence",
        "corrupted-input",
        "timeout",
        "cancellation"
      ],
      "meaning": "Checksum-pinned fixtures and threshold gates exist for real-engine qualification.",
      "doesNotMean": "This public ledger does not claim a current zero-skip run or aggregate musical accuracy for those fixtures."
    }
  },
  "musicalAccuracy": {
    "notePitchPrecisionRecall": {
      "status": "not-published",
      "reason": "No sufficiently licensed, versioned, measure-and-voice-aligned gold set is currently published."
    },
    "rhythmErrorRate": {
      "status": "not-published",
      "reason": "Duration and voice alignment against a human-reviewed reference has not yet produced an auditable public report."
    },
    "keyAndTimeSignatureRetention": {
      "status": "not-published",
      "reason": "The current regression suite does not score key and time signatures as aligned gold-set fields."
    },
    "lyricRetention": {
      "status": "not-published",
      "reason": "The current public sample set is not a licensed, multilingual lyric-alignment benchmark."
    }
  },
  "requiredGoldSetProtocol": [
    "Publish immutable source PDFs or images and human-reviewed MusicXML references with rights statements and checksums.",
    "Record the exact product and Audiveris versions, runtime configuration, input resolution, page count, and processing time.",
    "Run separate clean, low-resolution, rotated, cropped, shadowed, lyric, piano, dense-polyphony, and unsupported-handwriting cohorts.",
    "Align parts, measures, voices, and events before scoring note pitch or duration.",
    "Report pitch precision and recall, duration edit rate, measure structure, key and time signatures, lyrics, unsupported symbols, and human correction counts separately.",
    "Publish failures and reviewer disagreement rather than collapsing every cohort into one promotional percentage."
  ],
  "publicReferenceAssets": {
    "pdf": "https://scoretransposer.com/examples/scoretransposer-reference-score.pdf",
    "musicxml": "https://scoretransposer.com/examples/pdf-to-musicxml/output",
    "productPage": "https://scoretransposer.com/pdf-to-musicxml",
    "methodologyPage": "https://scoretransposer.com/guides/pdf-to-musicxml-recognition-benchmark",
    "assetBoundary": "The PDF and MusicXML downloads are deterministic reference assets. They are not represented as output from a measured Audiveris run."
  },
  "nonClaims": [
    "No universal recognition percentage is claimed.",
    "A completed job is not treated as proof of musical correctness.",
    "The 20-of-20 regression outcome is not presented as note accuracy.",
    "Upstream documentation links do not imply endorsement."
  ]
}