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      "reason_code": "AUTHORIZED_EVIDENCE_UNAVAILABLE",
      "supersedes_evaluation_id": "evaluation_01J0000000000000000000000Z",
      "evaluated_at": "2026-07-17T18:48:16.901Z"
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      "status": "exact",
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    },
    {
      "status": "degraded",
      "action": "warn"
    },
    {
      "status": "refused",
      "action": "refuse"
    },
    {
      "status": "stale",
      "action": "reevaluate"
    },
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      "status": "unverified",
      "action": "withhold_exact"
    }
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        "transcript_revision": 4
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      ],
      "reason_code": "DIRECT_HASH_LINKED_DERIVATION",
      "created_at": "2026-07-17T18:43:11.456Z",
      "assertion_sha256": "sha256:ae9c369ab2bb3ed7fb653a57367074056993f28bfe3b333eda28150b34c3f3b4"
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        "identity": "exact",
        "chronology": "exact",
        "derivation": "exact",
        "authorship": "not_applicable",
        "completeness": "exact"
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          "observed_generation": null
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      "reason_code": "DIRECT_HASH_LINKED_DERIVATION",
      "supersedes_evaluation_id": null,
      "evaluated_at": "2026-07-17T18:44:12.789Z"
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        "identity": "exact",
        "chronology": "exact",
        "derivation": "exact",
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        "completeness": "exact"
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      "boundary": {
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        "affected_dimensions": [
          "completeness"
        ],
        "dependency_ids": [],
        "compatibility": null
      },
      "dependency_results": [
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            "transcript_revision": 4
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        },
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        },
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        },
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          "observed_sha256": null,
          "observed_generation": null
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      ],
      "reason_code": "DIRECT_HASH_LINKED_DERIVATION",
      "supersedes_evaluation_id": null,
      "evaluated_at": "2026-07-17T18:44:12.789Z"
    },
    "unknown_artifact_generation": {
      "schema_version": "1.0",
      "assertion_id": "assertion_01J0000000000000000000000V",
      "project_id": "project_01J00000000000000000000001",
      "subject": {
        "entity_type": "artifact_revision",
        "entity_id": "revision_01J0000000000000000000000B",
        "content_sha256": "sha256:eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee"
      },
      "predicate": "derived_from",
      "object": {
        "entity_type": "invocation_output",
        "entity_id": "record_01J00000000000000000000005",
        "content_sha256": "sha256:9999999999999999999999999999999999999999999999999999999999999999"
      },
      "source_anchor": {
        "event_id": "event_01J00000000000000000000004",
        "event_sequence": 2,
        "event_hash": "sha256:eb03e514fa6fcfcd291357668559b24387a84256fc39d6fb0621529003d0988e"
      },
      "source_generation": {
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        "artifact_revision": null,
        "transcript_revision": 4
      },
      "lifecycle_phase": "accepted_into_work",
      "producer": {
        "subsystem": "provenance_writer",
        "application_version": "0.4.0"
      },
      "provenance": {
        "basis": "direct_record",
        "evidence": [
          {
            "evidence_id": "event_01J00000000000000000000004",
            "evidence_type": "provenance_event",
            "content_sha256": "sha256:5555555555555555555555555555555555555555555555555555555555555555"
          },
          {
            "evidence_id": "record_01J00000000000000000000005",
            "evidence_type": "invocation_response",
            "content_sha256": "sha256:9999999999999999999999999999999999999999999999999999999999999999"
          }
        ]
      },
      "dependencies": [
        {
          "dependency_id": "event_01J00000000000000000000004",
          "dependency_type": "provenance_event",
          "expected_sha256": "sha256:eb03e514fa6fcfcd291357668559b24387a84256fc39d6fb0621529003d0988e",
          "expected_generation": {
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            "artifact_revision": 12,
            "transcript_revision": 4
          },
          "evidence_class": "mandatory_retained",
          "role": "source_anchor",
          "confidence_dimensions": [
            "integrity",
            "chronology",
            "derivation"
          ]
        },
        {
          "dependency_id": "record_01J00000000000000000000005",
          "dependency_type": "model_configuration",
          "expected_sha256": "sha256:8888888888888888888888888888888888888888888888888888888888888888",
          "expected_generation": {
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            "artifact_revision": 12,
            "transcript_revision": 4
          },
          "evidence_class": "mandatory_live",
          "role": "model_configuration",
          "confidence_dimensions": [
            "identity",
            "derivation"
          ]
        },
        {
          "dependency_id": "turn_01J00000000000000000000007",
          "dependency_type": "transcript_turn",
          "expected_sha256": "sha256:7777777777777777777777777777777777777777777777777777777777777777",
          "expected_generation": {
            "project_epoch": 1,
            "artifact_revision": 12,
            "transcript_revision": 4
          },
          "evidence_class": "advisory",
          "role": "authorship_basis",
          "confidence_dimensions": [
            "authorship",
            "completeness"
          ]
        },
        {
          "dependency_id": "idea_01J00000000000000000000009",
          "dependency_type": "shadow_comparison",
          "expected_sha256": "sha256:2222222222222222222222222222222222222222222222222222222222222222",
          "expected_generation": {
            "project_epoch": 1,
            "artifact_revision": 12,
            "transcript_revision": 4
          },
          "evidence_class": "shadow",
          "role": "other",
          "confidence_dimensions": [
            "completeness"
          ]
        }
      ],
      "reason_code": "DIRECT_HASH_LINKED_DERIVATION",
      "created_at": "2026-07-17T18:43:11.456Z",
      "assertion_sha256": "sha256:ae9c369ab2bb3ed7fb653a57367074056993f28bfe3b333eda28150b34c3f3b4"
    }
  },
  "invariants": [
    "The source anchor identifies prior basis evidence and differs from the later assertion-recording event.",
    "The assertion digest excludes only assertion_sha256.",
    "Evaluations are immutable point-in-time conclusions; later records supersede current use without mutation.",
    "Unknown provenance, generation, compatibility, or confidence never produces exact.",
    "Consumers decide from canonical assertions, evaluations, and registries without producer-specific internal state."
  ]
}