{
  "schema_version": 1,
  "evidence_class": "developer_selected_internal_registered_comparison_not_blind",
  "private_report_sha256": "760ae96630b55de011d2d73f241f0bea3701125b5ac8c6961660b3699b4cb906",
  "ledger": {
    "path": "/data/asv5-internal18k-ledger-20261007.json",
    "sha256": "4ace2fb7ce208bef9ff167d73eb24f35d1c1586c0823a134909c6a9a0c392e71",
    "bytes": 4303237,
    "rows": 18000
  },
  "source": {
    "dataset": "ASVspoof 5 database v0.1, official Track 1 evaluation partition",
    "doi": "10.5281/zenodo.14498691",
    "url": "https://zenodo.org/records/14498691",
    "license": "Open Data Commons Attribution License v1.0 (ODC-By)",
    "attribution": "ASVspoof 5 database, ASVspoof 5 organizing committee (Wang, Delgado, Tak, Jung, Shim, Todisco, Kukanov, Liu, Sahidullah, Kinnunen, Evans, Lee, Yamagishi), Zenodo, doi:10.5281/zenodo.14498691. Licensed under ODC-By. This publication is a derived work: it contains official trial IDs, labels, attack tags, codec tags, WAV digests and detector scores only. It contains no audio.",
    "audio_bundled": false
  },
  "protocol": {
    "evidence_class": "developer_selected_internal_registered_comparison_not_blind",
    "registered": 18000,
    "selection": "Deterministic internal roster frozen before any evaluation audio was acquired: 2,000 bona fide plus 1,000 for each of the sixteen official attack tags A17-A32, chosen by hash ranking over recorded codec-seed groups and speakers from the official evaluation protocol. Selected by the developer, not drawn as a random population sample; labels were known to the developer.",
    "prior_exposure": "Two selected human trials were already exposed in the earlier 192-trial ASVspoof 5 diagnostic. They are annotated in the ledger and retained, not excluded.",
    "label_provenance": "Official ASVspoof 5 protocol keys. Upstream label custody is not independently verified.",
    "coverage_policy": "All 18,000 registered rows stay in every fixed-rule denominator. Abstentions and processing errors count as incorrect and are never dropped.",
    "worker": "Frozen JavaScript DSP (SHA-256 fdfc11cd0cb2456b364b4ae770549b0a85dcbd27c3bbbd91dbf0c732a8c16f8e) on the full prepared 16 kHz mono WAV. Fixed rule: synthetic when decision_score >= 0.5. An inconclusive verdict is an abstention, counted incorrect.",
    "learned": "Logistic regression (C = 10, standard scaler) on nine Worker DSP telemetry features, fit on the 10,000-row study training partition. Threshold -0.7613538151069796 on the uncalibrated margin was selected on the 10,000-row development partition (development observed EER 49.16%). Scores are not probabilities.",
    "ssl": "Unchanged author-released wav2vec 2.0 SSL anti-spoofing checkpoint (TakHemlata/SSL_Anti-spoofing at commit 4acaa61dcef5f7610f43aa4d0b29c4559b970cd2, checkpoint SHA-256 1cf904f1d84c867c278cd42161df5367939d61cc28bfefd239bc995af59c2804). Input is the first 64,600 samples (4.04 s at 16 kHz), repeated when shorter. Native rule: synthetic when logit_spoof >= logit_bonafide, ties included. No threshold or sign was tuned.",
    "ssl_runtime": "Network-disabled, read-only, nonroot, capability-dropped container, 4 CPUs, 64 GiB memory limit, image sha256:da461c87203f7b81677a80bc59c577ad5cdfc40ba3645521e15782bf5d633d7c, PyTorch 1.8.1+cpu. Exit code 0 on 2026-10-08.",
    "comparison_scope": "Different adaptation histories: the learned model was fit on a study training subset and its threshold selected on development rows; Worker keeps its existing fixed rule; SSL keeps its unchanged checkpoint. Worker and the learned model see the full WAV while SSL sees only the first 4.04 s. This comparison does not establish superiority of any system.",
    "score_semantics": "Worker decision_score, the learned margin and the SSL spoof margin (logit_spoof - logit_bonafide) are uncalibrated and have different scales. EER values describe determinate rows only and use a varying boundary; they never replace the fixed operating rules.",
    "limits": "Internal developer-selected comparison. Not blind, not independent, not a full or official ASVspoof 5 challenge result, no random population sample, no verified training/test or waveform independence, no calibrated probability and no population confidence interval."
  },
  "thresholds": {
    "worker": 0.5,
    "learned": -0.7613538151069796,
    "ssl": 0.0
  },
  "source_pins": {
    "audio_manifest": "6c7e1431c3adcfa4cd0c38848960dfc84a156e40c684b9445a51c17fd38a16c3",
    "development_deposit": "b01242c334270e08ceb355235ba66acfc63276a842835670b4c018ddb3b6226f",
    "evaluation_audio_manifest": "a08051d415d98f3e41c600fd6d354b6ad11719e8aa98086397f5b419deff58ba",
    "evaluation_deposit": "456048fadb60db59e420ac7c8d06ba70e65cc8c9b9e820b34fb8b8b8d50b0a00",
    "evaluation_feature_runner": "18d5674d6e47411292e4ead81e1eeb30453b2506e1b79e24492c4bbca294b123",
    "evaluation_freeze": "86d801f13f368a233f6ff253fc5781b95d360d3970008ba2240bb43f489d555c",
    "evaluation_roster": "b6220f4478fd298f1b44f911067642f48985a1bd8c55fed1380c61ffc4e8bd9a",
    "feature_runner": "913955671b2df1fa3cbc612c89c0b5b2fb2b959b73e176ca3a7ae000011477c6",
    "learned_ledger": "5565bc588fa48b7b3c0b8ae1aea9d5cf7194fdef2e1e707f83a3da14409888be",
    "model": "3f8d27a18f882fbe2840746399343124e2f5f0bf5ff04b28c08237fc3afe5374",
    "raw_worker_ledger": "1045f903538c3c1c732ab236c584d4b38637a616198be6328dab37e049c37eea",
    "ssl_adapter": "e8a6788d6a04412b0c3036d618cbf1198999de2c9d90125823a315e75369ca4e",
    "ssl_completion": "1b5bef7e9464c5d4c145c732d89a1200b585cf9fec441e8d88eec761fb2903e4",
    "ssl_ledger": "75776ad7351b8584fff4790acaf0898c5c38a8cc4e490db102c57c7890867679",
    "train_deposit": "1058baa1572cf13e4a76c11abfca02cbfe2e64e313113e29fa9d863d25b7732b"
  },
  "ssl_container_source_inventory": {
    "score-ssl-internal.py": "47456da2aeb68e6332738c0e7c3e8ace1e7acaa7b40a5228f6a9329b1a9b0b61",
    "score_ssl_evaluation.py": "e8a6788d6a04412b0c3036d618cbf1198999de2c9d90125823a315e75369ca4e",
    "contract-freeze.json": "f76a65f7e0aa7757a211ea4ae0a8f049fdc8b792b8f275212981474effcc2455",
    "evaluation-audio-manifest.json": "a08051d415d98f3e41c600fd6d354b6ad11719e8aa98086397f5b419deff58ba",
    "evaluation-freeze.json": "86d801f13f368a233f6ff253fc5781b95d360d3970008ba2240bb43f489d555c",
    "evaluation-roster.json": "b6220f4478fd298f1b44f911067642f48985a1bd8c55fed1380c61ffc4e8bd9a",
    "model.json": "3f8d27a18f882fbe2840746399343124e2f5f0bf5ff04b28c08237fc3afe5374",
    "RawBoost.py": "96b7e9050a01b8dd83de4daf97032586c5b86946c759ac06d06f82295ec67660",
    "data_utils_SSL.py": "8a32c93bb1cdfe4aaf440da7e658396afd83c799b2936272f34ad4a0a5c338b9",
    "main_SSL_DF.py": "c34fa29e8072be11c7737d0a2d17059bceb81139d4a905aba1b5ce1936458ed0",
    "model.py": "08b2b99b9cc0e90732746471325185f2eb144795ee35338e0a02951015a856c6",
    "Best_LA_model_for_DF.pth": "1cf904f1d84c867c278cd42161df5367939d61cc28bfefd239bc995af59c2804",
    "xlsr2_300m.pt": "b08927597f2c9eb2ebd7dcc3ac78ee4b5f6021cbac4b3a6c5a9deec445d80ed9"
  },
  "aggregate": {
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      "trials": 18000,
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          "class_counts": {
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            "synthetic": 16000
          },
          "confusion": {
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              "predicted_synthetic": 1351,
              "abstention": 0
            },
            "synthetic": {
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              "predicted_synthetic": 13964,
              "abstention": 36
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          "correct": 14613,
          "accuracy": 0.8118333333333333,
          "human_rejected": 1351,
          "synthetic_missed": 2036,
          "abstentions": 36,
          "processing_errors": 0,
          "human_false_flags": 1351,
          "synthetic_missed_as_human": 2000,
          "human_rejection_rate_including_abstentions": 0.6755,
          "synthetic_miss_rate_including_abstentions": 0.12725,
          "balanced_accuracy": 0.598625,
          "observed_score_eer": 0.3943775291173213,
          "eer_determinate_rows": 17964
        },
        "learned": {
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          },
          "confusion": {
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            "synthetic": {
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          "human_false_flags": 860,
          "synthetic_missed_as_human": 7353,
          "human_rejection_rate_including_abstentions": 0.43,
          "synthetic_miss_rate_including_abstentions": 0.4595625,
          "balanced_accuracy": 0.5552187500000001,
          "observed_score_eer": 0.444,
          "eer_determinate_rows": 18000
        },
        "ssl": {
          "registered": 18000,
          "class_counts": {
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            "synthetic": 16000
          },
          "confusion": {
            "human": {
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            },
            "synthetic": {
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          },
          "correct": 16361,
          "accuracy": 0.9089444444444444,
          "human_rejected": 1637,
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          "synthetic_missed_as_human": 2,
          "human_rejection_rate_including_abstentions": 0.8185,
          "synthetic_miss_rate_including_abstentions": 0.000125,
          "balanced_accuracy": 0.5906875,
          "observed_score_eer": 0.201,
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          "author_bonafide_logit_eer_determinate_rows": 18000
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      },
      "paired": {
        "worker_vs_ssl": {
          "both_correct": 14184,
          "worker_only_correct": 429,
          "ssl_only_correct": 2177,
          "neither_correct": 1210,
          "decision_disagreements_common_determinate": 2570
        },
        "learned_vs_worker": {
          "both_correct": 7898,
          "learned_only_correct": 1889,
          "worker_only_correct": 6715,
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        "learned_vs_ssl": {
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          "ssl_only_correct": 7480,
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    "by_attack": {
      "bonafide": {
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              "synthetic": 0
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            "confusion": {
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              "synthetic": {
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            "correct": 1140,
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      "A17": {
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            "confusion": {
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          "ssl": {
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            "confusion": {
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            },
            "correct": 1000,
            "accuracy": 1.0,
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        "paired": {
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            "ssl_only_correct": 439,
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          }
        }
      },
      "A18": {
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        "systems": {
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              "synthetic": 1000
            },
            "confusion": {
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              "synthetic": {
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            },
            "correct": 990,
            "accuracy": 0.99,
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            "synthetic_missed_as_human": 10,
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            "balanced_accuracy": null,
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            "eer_determinate_rows": 1000
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          "learned": {
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            },
            "confusion": {
              "human": {
                "predicted_human": 0,
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              },
              "synthetic": {
                "predicted_human": 326,
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            },
            "correct": 674,
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            "eer_determinate_rows": 1000
          },
          "ssl": {
            "registered": 1000,
            "class_counts": {
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              "synthetic": 1000
            },
            "confusion": {
              "human": {
                "predicted_human": 0,
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              },
              "synthetic": {
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                "predicted_synthetic": 1000,
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            },
            "correct": 1000,
            "accuracy": 1.0,
            "human_rejected": 0,
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            "eer_determinate_rows": 1000,
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        },
        "paired": {
          "worker_vs_ssl": {
            "both_correct": 990,
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            "ssl_only_correct": 10,
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          "learned_vs_worker": {
            "both_correct": 665,
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          "learned_vs_ssl": {
            "both_correct": 674,
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            "ssl_only_correct": 326,
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            "decision_disagreements_common_determinate": 326
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        }
      },
      "A19": {
        "trials": 1000,
        "systems": {
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            "class_counts": {
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              "synthetic": 1000
            },
            "confusion": {
              "human": {
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              "synthetic": {
                "predicted_human": 302,
                "predicted_synthetic": 698,
                "abstention": 0
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            },
            "correct": 698,
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