{
  "schema": "concresca.change-detection.v018",
  "site_version": "0.28.0-wip",
  "as_of": "2026-08-31",
  "truth_boundary": "v0.18 adds exact longitudinal comparison for identified repository-owned bytes only. External artifact fields were not reobserved; prior selected-field fingerprints remain historical baseline records and do not support unchanged or drift conclusions.",
  "baseline_id": "OBS-TEMPORAL-2026-08-29-V018",
  "baseline_status": "LOCAL_LONGITUDINAL_COMPARISON_EXTERNAL_NOT_REOBSERVED",
  "material_change_dimensions": [
    "artifact_identity",
    "canonical_route",
    "declared_revision_or_release",
    "source_relationship",
    "evidence_class",
    "authority_issuer",
    "jurisdiction",
    "purpose",
    "scope",
    "validity_or_expiry",
    "revocation",
    "stay_or_suspension",
    "review_or_appeal",
    "partition_state",
    "reconciliation_state",
    "restoration_state",
    "synthetic_or_operational_status",
    "independent_verification_status",
    "downstream_dependency_state",
    "human_legibility"
  ],
  "rules": [
    {
      "rule_id": "TC01",
      "rule": "Comparison is blocked when identity continuity is not established."
    },
    {
      "rule_id": "TC02",
      "rule": "A field-set mismatch must become FIELDS_ADDED, FIELDS_REMOVED, or BASELINE_INCOMPARABLE."
    },
    {
      "rule_id": "TC03",
      "rule": "Different version systems may be mapped but not collapsed into false equivalence."
    },
    {
      "rule_id": "TC04",
      "rule": "UNCHANGED_VERIFIED at raw-byte scope is prohibited unless both byte sequences exist."
    },
    {
      "rule_id": "TC05",
      "rule": "Selected-field results are bounded to selected fields and cannot authenticate unretained content."
    },
    {
      "rule_id": "TC06",
      "rule": "Undocumented normalization makes the baseline incomparable."
    },
    {
      "rule_id": "TC07",
      "rule": "A detector may find differences; it may not silently own constitutional materiality."
    },
    {
      "rule_id": "TC08",
      "rule": "Schema drift must remain visible before value comparison is interpreted."
    },
    {
      "rule_id": "TC09",
      "rule": "A missing basis must produce a typed unknown rather than optimistic inference."
    },
    {
      "rule_id": "TC10",
      "rule": "Source unavailability blocks content comparison unless another authorized exact capture is identified."
    },
    {
      "rule_id": "TC11",
      "rule": "Clock uncertainty or authority-time ambiguity blocks full-restoration conclusions."
    },
    {
      "rule_id": "TC12",
      "rule": "Correction remains incomplete while known dependent records are stale and unmarked."
    }
  ],
  "change_events": [
    {
      "event_id": "CHG-CON-001",
      "origin": "CONCRESCA_LOCAL_RELEASE_DIFF",
      "status": "APPLIED_LOCAL",
      "artifact_ids": [
        "ART-CON-001",
        "ART-CON-002"
      ],
      "source_ids": [],
      "summary": "v0.17 adds a separate artifact baseline, formal-property registry and observed-result registry without converting the v0.16 Protocol Lab definitions into results.",
      "material_dimensions": [
        "implementation class",
        "truth boundary",
        "review/appeal/restoration route"
      ],
      "independent_detection": true,
      "limitations": "This is a local release difference, not evidence of external adoption."
    },
    {
      "event_id": "CHG-EVI-001",
      "origin": "EVIULON_FIRST_PARTY_DRIFT_RECORD",
      "status": "SOURCE_REPORTED",
      "artifact_ids": [
        "ART-EVI-005"
      ],
      "source_ids": [
        "SRC-EVI-023"
      ],
      "summary": "Eviulon's public drift registry records bounded publication incidents such as version lag and relationship-language conflict.",
      "material_dimensions": [
        "validity or revision",
        "status",
        "source role"
      ],
      "independent_detection": false,
      "limitations": "Concresca records Eviulon's first-party incident report; it does not independently infer misconduct or operational failure."
    },
    {
      "event_id": "CHG-EVI-002",
      "origin": "EVIULON_FIRST_PARTY_OBSERVATION_REVIEW",
      "status": "SOURCE_REPORTED",
      "artifact_ids": [
        "ART-EVI-004",
        "ART-EVI-007"
      ],
      "source_ids": [
        "SRC-EVI-022",
        "SRC-EVI-025"
      ],
      "summary": "A live Site Index observation was reviewed as lagging an accepted local successor; production deployment remains pending.",
      "material_dimensions": [
        "validity or revision",
        "operational state",
        "status"
      ],
      "independent_detection": false,
      "limitations": "The publisher's record distinguishes local package evidence from actual-host deployment evidence."
    },
    {
      "event_id": "CHG-EVI-003",
      "origin": "EVIULON_FIRST_PARTY_CORRECTION_PROPAGATION",
      "status": "PENDING_DOWNSTREAM",
      "artifact_ids": [
        "ART-EVI-007"
      ],
      "source_ids": [
        "SRC-EVI-025"
      ],
      "summary": "Correction propagation is recorded locally while the live deployment target remains pending.",
      "material_dimensions": [
        "status",
        "operational state",
        "review/appeal/restoration route"
      ],
      "independent_detection": false,
      "limitations": "A correction record does not prove that downstream repositories or deployments changed."
    },
    {
      "event_id": "CHG005",
      "origin": "CONCRESCA_LOCAL_RELEASE",
      "status": "CHANGED_MATERIAL",
      "artifact_ids": [
        "ART-CON-003",
        "ART-CON-004",
        "ART-CON-005",
        "ART-CON-006",
        "ART-CON-007",
        "ART-CON-008",
        "ART-CON-009"
      ],
      "source_ids": [],
      "summary": "v0.18 adds temporal comparison, exact local lineage, proof-carrying restoration, receipt, partition-history, legibility-evaluation, and invalidation registries.",
      "material_dimensions": [
        "declared_revision_or_release",
        "restoration_state",
        "reconciliation_state",
        "human_legibility",
        "downstream_dependency_state"
      ],
      "independent_detection": false,
      "limitations": "Repository-local release change only; no external state or production outcome is inferred."
    },
    {
      "event_id": "CHG006",
      "origin": "CONCRESCA_EXACT_LOCAL_COMPARISON",
      "status": "UNCHANGED_VERIFIED",
      "artifact_ids": [
        "ART-CON-001",
        "ART-CON-002"
      ],
      "source_ids": [],
      "summary": "Exact v0.17-to-v0.18 local bytes for the v0.16 protocol registry and Protocol Lab remain identical.",
      "material_dimensions": [
        "artifact_identity",
        "declared_revision_or_release"
      ],
      "independent_detection": false,
      "limitations": "Exact repository bytes only; does not establish external deployment or protocol execution."
    },
    {
      "event_id": "CHG007",
      "origin": "CONCRESCA_SCOPE_DECLARATION",
      "status": "NOT_REOBSERVED",
      "artifact_ids": [
        "ART-EVI-001",
        "ART-EVI-002",
        "ART-EVI-003",
        "ART-EVI-004",
        "ART-EVI-005",
        "ART-EVI-006",
        "ART-EVI-007",
        "ART-EVI-008",
        "ART-EVU-001",
        "ART-EVU-002",
        "ART-EVU-003",
        "ART-EVU-004",
        "ART-EVU-005",
        "ART-EVU-006",
        "ART-EVU-007",
        "ART-EVU-008",
        "ART-EVU-009",
        "ART-EVU-010"
      ],
      "source_ids": [],
      "summary": "No fresh external artifact capture was performed for v0.18; v0.17 selected-field baselines remain historical only.",
      "material_dimensions": [
        "source_relationship",
        "declared_revision_or_release",
        "independent_verification_status"
      ],
      "independent_detection": false,
      "limitations": "No unchanged or drift result is available for external artifacts in this release."
    },
    {
      "event_id": "CHG008",
      "origin": "CONCRESCA_LOCAL_RELEASE",
      "status": "FIELDS_ADDED",
      "artifact_ids": [],
      "source_ids": [],
      "summary": "DOC-052 and v0.18 public routes/endpoints are added to the local publication corpus.",
      "material_dimensions": [
        "canonical_route",
        "declared_revision_or_release",
        "human_legibility"
      ],
      "independent_detection": false,
      "limitations": "Publication-corpus expansion is not evidence of external indexing, ranking, citation, adoption, or certification."
    }
  ],
  "artifact_fingerprints": [
    {
      "artifact_id": "ART-CON-001",
      "selected_field_digest_sha256": "64c533468522b722e1f2251bfb76ec8ea413df69dbc05b218a5072bafc723ea1",
      "raw_artifact_sha256": "02e672bd22c55e12e85c5e98fc07b6edd48b978b227fcf230740c9dff807dbc7",
      "observed_at": "2026-08-29",
      "comparison_status": "UNCHANGED_VERIFIED_EXACT_LOCAL_BYTES",
      "comparison_contract_id": "TC04",
      "prior_raw_sha256": "02e672bd22c55e12e85c5e98fc07b6edd48b978b227fcf230740c9dff807dbc7",
      "limitations": "Exact repository-owned bytes compared across v0.17 and v0.18."
    },
    {
      "artifact_id": "ART-CON-002",
      "selected_field_digest_sha256": "58eba988c8c18a402c2f975c5c34be12d9cb315fb8fba5d8f285782c1d9fddbe",
      "raw_artifact_sha256": "b7111e4e77924e7f8658b91817cac7cd2c0d64547562b8b4fde8f46805b4089f",
      "observed_at": "2026-08-29",
      "comparison_status": "UNCHANGED_VERIFIED_EXACT_LOCAL_BYTES",
      "comparison_contract_id": "TC04",
      "prior_raw_sha256": "b7111e4e77924e7f8658b91817cac7cd2c0d64547562b8b4fde8f46805b4089f",
      "limitations": "Exact repository-owned bytes compared across v0.17 and v0.18."
    },
    {
      "artifact_id": "ART-CON-003",
      "selected_field_digest_sha256": "959ab85ae8b4e96b5ce8d80a14b9d77b6e7e587a16af31c7b1112b0f2a03d20f",
      "raw_artifact_sha256": "f22939e59786eb32aeef28a82342afe873351083cf000acfb7eb6608f900d9bf",
      "observed_at": "2026-08-29",
      "comparison_status": "BASELINE_ESTABLISHED_NO_PRIOR_CAPTURE",
      "comparison_contract_id": "TC04",
      "prior_raw_sha256": null,
      "limitations": "First local baseline for this v0.18 artifact."
    },
    {
      "artifact_id": "ART-CON-004",
      "selected_field_digest_sha256": "eee29ffd8763737f9ee49f020be63ab9f4e20777e7d604113f0e802e095ceecf",
      "raw_artifact_sha256": "913e1482a5c31dbe23e0f10da476c150f44314fbb30b88399b70955642e3c533",
      "observed_at": "2026-08-29",
      "comparison_status": "BASELINE_ESTABLISHED_NO_PRIOR_CAPTURE",
      "comparison_contract_id": "TC04",
      "prior_raw_sha256": null,
      "limitations": "First local baseline for this v0.18 artifact."
    },
    {
      "artifact_id": "ART-CON-005",
      "selected_field_digest_sha256": "724086058a17c42b07db1b768c0358e0a1404f6c350c7d467c876760c18eecd7",
      "raw_artifact_sha256": "5ed3368062049c882dae32f9b5c2ca90972dd028dc4d1b355911f21e3a43a4ab",
      "observed_at": "2026-08-29",
      "comparison_status": "BASELINE_ESTABLISHED_NO_PRIOR_CAPTURE",
      "comparison_contract_id": "TC04",
      "prior_raw_sha256": null,
      "limitations": "First local baseline for this v0.18 artifact."
    },
    {
      "artifact_id": "ART-CON-006",
      "selected_field_digest_sha256": "2bdef6c5590e7686433159a7f1f344e62bd3cbae9746fe6717a517d2cb994495",
      "raw_artifact_sha256": "9d287e1b48ef6f58904237d567f522a7e8e13f3c3189c0a00f32baa8ce8824aa",
      "observed_at": "2026-08-29",
      "comparison_status": "BASELINE_ESTABLISHED_NO_PRIOR_CAPTURE",
      "comparison_contract_id": "TC04",
      "prior_raw_sha256": null,
      "limitations": "First local baseline for this v0.18 artifact."
    },
    {
      "artifact_id": "ART-CON-007",
      "selected_field_digest_sha256": "37283612a02b222aa4f1316634156ce847276019443eeadab6ca80899d71cc43",
      "raw_artifact_sha256": "f4e1e40f14c1eed963ec20994c6f17778d887fcdd90875daeb7aab61fc41fd06",
      "observed_at": "2026-08-29",
      "comparison_status": "BASELINE_ESTABLISHED_NO_PRIOR_CAPTURE",
      "comparison_contract_id": "TC04",
      "prior_raw_sha256": null,
      "limitations": "First local baseline for this v0.18 artifact."
    },
    {
      "artifact_id": "ART-CON-008",
      "selected_field_digest_sha256": "98d629a328983b1f712e9aac472bb9497af7f822f3cb4524769bf54a3a74afaf",
      "raw_artifact_sha256": "92145569fcc71c983b058115a437d7f06db236b001aaa1e38da709696d7586a6",
      "observed_at": "2026-08-29",
      "comparison_status": "BASELINE_ESTABLISHED_NO_PRIOR_CAPTURE",
      "comparison_contract_id": "TC04",
      "prior_raw_sha256": null,
      "limitations": "First local baseline for this v0.18 artifact."
    },
    {
      "artifact_id": "ART-CON-009",
      "selected_field_digest_sha256": "e2a2a6db56a16b85538042ad2e1d95d3665311feac56fdc20f2ede7d6b25069e",
      "raw_artifact_sha256": "56f4d53ee382b24c88b9bd836dd9dca60f963280f47e96c0c03d4b1d39d12bcc",
      "observed_at": "2026-08-29",
      "comparison_status": "BASELINE_ESTABLISHED_NO_PRIOR_CAPTURE",
      "comparison_contract_id": "TC04",
      "prior_raw_sha256": null,
      "limitations": "First local baseline for this v0.18 artifact."
    },
    {
      "artifact_id": "ART-EVI-001",
      "selected_field_digest_sha256": "df484fb5efe2005d2482dcf2a02228e4a915d318acf888e28d109ef41599f3b9",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVI-002",
      "selected_field_digest_sha256": "03a26993b4f514a8dfd8023427ef3979314fef3cfe6f1bf99e2c0f7a4c3a7556",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVI-003",
      "selected_field_digest_sha256": "e50135d947f968969fe7823d9e3889d4d6a918aaa218f00dcce30ae24b47d49a",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVI-004",
      "selected_field_digest_sha256": "7f41d2a9cc84b9b371ce375c77e565bd06d4df43cb0b515deea66bd2f9dc6213",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVI-005",
      "selected_field_digest_sha256": "b9de9a8a9691b8401bc3f20ee797a1eb201d62598b20cf453ee06a101b198ddf",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVI-006",
      "selected_field_digest_sha256": "eec3406d6cd8e9bda2feb71608343ae08be9d41e0cdcd3dbbfc2f3e6223e0973",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVI-007",
      "selected_field_digest_sha256": "245fdb1bcb475716950d88cebc84beb866e8c5d326990238448ee6d3787ad92d",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVI-008",
      "selected_field_digest_sha256": "2b33cda17abb390dfac488af9dd8a52529a727810dc700decbb190d91193502d",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVU-001",
      "selected_field_digest_sha256": "087d92cf552581792027274bbe6feef7ee752248c69d0c04c041c3b940b4d43f",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVU-002",
      "selected_field_digest_sha256": "e9c42f97f126f8948b91e8c337badad56c2e8010de33eb884dc131f67509d039",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVU-003",
      "selected_field_digest_sha256": "a956c8b057d84b675a36525680b5a092b726b8c155af0d4515ab03d48d3ce5b5",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVU-004",
      "selected_field_digest_sha256": "cb1fb91128ace2c316657838d2ed53382d9996850f91963fe41610fa207e9d76",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVU-005",
      "selected_field_digest_sha256": "2c7a3fefd97cc840a461a28bde6c4d1ceec6984d56a240db76057f43bf811bc3",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVU-006",
      "selected_field_digest_sha256": "de842a30f3a4f6d05cde7469e9f6bbf55d0562f990f06726657fdcae17aade81",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVU-007",
      "selected_field_digest_sha256": "b62ec96e83135b9f98c55346628256286b6b4de50d32682219626e5c074597a6",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVU-008",
      "selected_field_digest_sha256": "a35abcee38ca5a758fd5a21e64c0bb1a74b520a5d8ca34804c4542656bbf0567",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVU-009",
      "selected_field_digest_sha256": "392c06256cf026ad9e2ab1aa47964ef15942a6a2e3ea3c273f2ea0437e29ae73",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    },
    {
      "artifact_id": "ART-EVU-010",
      "selected_field_digest_sha256": "63c6a0874a6b07cde5f7d48ba387455ab69468ad9e0f78c96760e4d707f38315",
      "raw_artifact_sha256": null,
      "observed_at": "2026-08-29",
      "comparison_status": "NOT_REOBSERVED_PRIOR_BASELINE_RETAINED",
      "comparison_contract_id": "TC09",
      "prior_raw_sha256": null,
      "limitations": "No v0.18 external capture; retained fingerprint is historical and does not support unchanged/drift inference."
    }
  ],
  "prior_baseline_id": "OBS-BASELINE-2026-08-29-V017",
  "comparison_contract_registry": "/data/temporal-comparison/",
  "baseline_lineage_registry": "/data/baseline-lineage/"
}