{
  "claims": {
    "contributors": {
      "command": "venv/bin/python scripts/sketch_experiments.py",
      "evidence": "recorded/sketch-results.json",
      "field": "contributors",
      "method": "Adjacent-day key deltas; flag when the two largest positive lower bounds exceed half of positive total growth.",
      "sha256": "b24585b61e820987ad0ff6599117b936eb1ff11ccfb5125f05d2b116f74ebc87",
      "values": {
        "top_sessions": {
          "bound_violations": 0,
          "comparisons": 304,
          "false_negative": 0,
          "false_positive": 0,
          "flagged_next_days": 136,
          "growth_share_checks": 9295,
          "keys_checked": 17729,
          "next_day_reversals": 67,
          "precision": 1.0,
          "recall": 1.0,
          "share_checks": 35405,
          "true_positive": 136
        },
        "top_users": {
          "bound_violations": 0,
          "comparisons": 304,
          "false_negative": 0,
          "false_positive": 0,
          "flagged_next_days": 147,
          "growth_share_checks": 1110,
          "keys_checked": 2133,
          "next_day_reversals": 70,
          "precision": 1.0,
          "recall": 1.0,
          "share_checks": 4231,
          "true_positive": 147
        }
      }
    },
    "daily-union": {
      "command": "venv/bin/python scripts/sketch_experiments.py",
      "evidence": "recorded/sketch-results.json",
      "field": "unions.1.union_abs_error",
      "method": "Merge the two daily HLL++ states and compare with the exact union.",
      "sha256": "b24585b61e820987ad0ff6599117b936eb1ff11ccfb5125f05d2b116f74ebc87",
      "values": {
        "max": 0.0006885861360999002,
        "mean": 0.00010082361532970447,
        "median": 1.716628321091207e-05,
        "n": 305,
        "p95": 0.00037385364058373227
      }
    },
    "overlap": {
      "command": "venv/bin/python scripts/data_audit.py",
      "evidence": "recorded/overlap.json",
      "field": "",
      "method": "Exact released-label sets in the shared pseudonym namespace.",
      "sha256": "943c9a95ded482ef477e7163d30ec97aab2a38bd1024ecd669a1213722ce7784",
      "values": {
        "both_provider_days": 191,
        "claude_labels": 46,
        "codex_labels": 26,
        "days_with_shared_labels": 137,
        "interpretation": "Observed pseudonymous label overlap, not inferred humans.",
        "intersection_labels": 20,
        "naive_overcount_fraction_of_union": 0.38461538461538464,
        "naive_overcount_labels": 20,
        "naive_sum_labels": 72,
        "union_labels": 52
      }
    },
    "privacy": {
      "command": "venv/bin/python scripts/isolated_analyst.py && venv/bin/python scripts/privacy_audit.py && venv/bin/python scripts/record_results.py",
      "evidence": "recorded/privacy.json",
      "field": "",
      "method": "Known identifiers in serialized summaries; separate decoded-artifact and injected-leak checks; OS denial probe before analyst execution.",
      "sha256": "a96edbdc074824daf7b64166cf50d90d0102e7ca9e31cdf8ae9c1da3781a8225",
      "values": {
        "analyst_artifact_scan": {
          "checks": {
            "all_marker_patterns_indexed": true,
            "decode_or_validation_errors": 0,
            "files_scanned": 855,
            "injected_leak_tests": [
              {
                "cases": 100,
                "name": "prefix_scan_vs_naive_short_overlap_collision_unicode",
                "passed": true
              },
              {
                "cases": 24,
                "name": "full_index_injected_plaintext",
                "passed": true
              },
              {
                "cases": 8,
                "name": "full_index_base64_protobuf_only_leaks",
                "passed": true
              },
              {
                "cases": 2,
                "name": "decoded_json_and_csv_escaped_leaks",
                "passed": true
              },
              {
                "cases": 1,
                "name": "negative_control",
                "passed": true
              }
            ],
            "leak_findings": 0,
            "protobuf_payloads": 5118,
            "stable_inventory": true,
            "stable_marker_sources": true
          },
          "passed": true,
          "planted_sentinel_count": 5,
          "raw_identity_count": 2076518
        },
        "isolation": {
          "network_denied": true,
          "raw_read_denied": true
        },
        "known_identifier_scan": {
          "all_serialized_sketch_bytes_total_view": 262732,
          "files_scanned": 1278,
          "note": "Wire bytes include metadata/registers/weights as well as hashes. Decoded and sentinel checks are recorded separately.",
          "raw_identity_hits": [],
          "raw_identity_values": 2076518
        }
      }
    },
    "ranges": {
      "command": "venv/bin/python scripts/sketch_experiments.py",
      "evidence": "recorded/sketch-results.json",
      "field": "ranges.queries",
      "method": "Every contiguous range; timing is median of five whole batches divided by query count.",
      "sha256": "b24585b61e820987ad0ff6599117b936eb1ff11ccfb5125f05d2b116f74ebc87",
      "values": [
        {
          "absolute_error": {
            "max": 0.001289452911578337,
            "mean": 0.0003173819742030904,
            "median": 9.346176122804195e-05,
            "n": 299,
            "p95": 0.001009046447375539
          },
          "batch_seconds": [
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            0.0006721250247210264,
            0.0007034579757601023,
            0.0007102499948814511,
            0.0007202919805422425
          ],
          "days": 7,
          "median_ms_per_query": 0.0023527022600672316,
          "queries": 299,
          "slowest_batch_seconds": 0.0007202919805422425
        },
        {
          "absolute_error": {
            "max": 0.002077276972805464,
            "mean": 0.0006155930823150786,
            "median": 0.0002307956547120682,
            "n": 278,
            "p95": 0.001953283960268948
          },
          "batch_seconds": [
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            0.002359666978009045,
            0.0023556670057587326,
            0.002363458974286914,
            0.002382167032919824
          ],
          "days": 28,
          "median_ms_per_query": 0.008495201242806243,
          "queries": 278,
          "slowest_batch_seconds": 0.002382167032919824
        },
        {
          "absolute_error": {
            "max": 0.003364922407428139,
            "mean": 0.0012895243926615706,
            "median": 0.0006180092415846161,
            "n": 216,
            "p95": 0.0032065874050104526
          },
          "batch_seconds": [
            0.005555125011596829,
            0.005578916985541582,
            0.005570042005274445,
            0.005593665991909802,
            0.005627500009723008
          ],
          "days": 90,
          "median_ms_per_query": 0.025828319377507323,
          "queries": 216,
          "slowest_batch_seconds": 0.005627500009723008
        }
      ]
    },
    "sampling": {
      "command": "venv/bin/python scripts/data_audit.py",
      "evidence": "recorded/sampling.json",
      "field": "deduplication",
      "method": "Verify both shifted CSV blocks with row multiplicity, remove later copies, audit daily gaps and sample successful rows with Algorithm R.",
      "sha256": "71e10f733e3abb92bc7aa5d97a8db8c06c803f198bab4b8fbbb5e34d819585e8",
      "values": {
        "blocks": [
          {
            "all_rows_matched": true,
            "first_copy_line": 745569,
            "last_copy_line": 1456690,
            "removed_rows": 710853,
            "shift_seconds": 604800,
            "shifted_source_sha256": "73879fac8899fbbfe7b34fd6dd292ae931ee7b322ea91b7f10210b563528e97d",
            "source_lines_inclusive": [
              2,
              710854
            ]
          },
          {
            "all_rows_matched": true,
            "first_copy_line": 2965704,
            "last_copy_line": 3634299,
            "removed_rows": 668596,
            "shift_seconds": 518400,
            "shifted_source_sha256": "43c24ed6d17c16b6a10802465a165b7be5bae97b5d8bf36298dabcbbe10abdd4",
            "source_lines_inclusive": [
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              2965272
            ]
          }
        ],
        "file": "BurstGPT_2.csv",
        "fraction_of_both_files": 0.26085549773050165,
        "method": "Match all six fields with exact Decimal timestamp shifts and row multiplicity; retain source occurrences, remove only later matching copies before reservoir sampling.",
        "removed_rows": 1379449,
        "replay_scope": "Original rows remain in the accounting replay and exact counter reconciliation; synthetic scale weights use only deduplicated successful rows.",
        "retained_counts": {
          "complete_tokens": 1766982581,
          "input_tokens": 1503636841,
          "missing_token_usage": 63619,
          "output_tokens": 263357004,
          "requests": 3908724
        },
        "successful_sampling_population": 3845105
      }
    },
    "scale": {
      "command": "for seed in 20261010 20261011 20261012; do ./scale data/weights.json evidence/scale-isolated-1000000-$seed 1000000 $seed; done",
      "evidence": "recorded/scale.json",
      "field": "",
      "method": "Isolated processes, mandatory identity events then Zipf(1.2), exact keyed-table comparison.",
      "sha256": "604180d86ee55c52d0e04ff2fc8162a6d139dee50e4968bcb9f58475d6a2c64c",
      "values": [
        {
          "aggregate_metric_series": 12,
          "bound_violations": 0,
          "distinct_estimate": 996116.7935345507,
          "distinct_relative_error": 0.003883206465449301,
          "events": 5000000,
          "exact_heap_delta_bytes": 37741568,
          "exact_json_bytes": 26533386,
          "exact_table_entries": 1000000,
          "fi_bytes": 10797,
          "fi_capacity": 512,
          "heap_delta_bytes": 91712,
          "hll_bytes": 16424,
          "hll_register_storage_bytes": 16384,
          "isolated_process": true,
          "minimum_exact_key_weight_payload_bytes": 16000000,
          "n": 1000000,
          "per_user_metric_series": 12000000,
          "seconds": 1.824016416,
          "seed": 20261010,
          "top20_precision": 1,
          "top20_recall": 1,
          "untracked_checked": 999488,
          "weight_conserved": true,
          "weights_sha256_json": "c41012d5806983fafc92ffdc3e4db499e61c99af793d1259d8fcb511291ec540"
        },
        {
          "aggregate_metric_series": 12,
          "bound_violations": 0,
          "distinct_estimate": 992837.6811310343,
          "distinct_relative_error": 0.007162318868965726,
          "events": 5000000,
          "exact_heap_delta_bytes": 37667376,
          "exact_json_bytes": 26533880,
          "exact_table_entries": 1000000,
          "fi_bytes": 10776,
          "fi_capacity": 512,
          "heap_delta_bytes": 104832,
          "hll_bytes": 16424,
          "hll_register_storage_bytes": 16384,
          "isolated_process": true,
          "minimum_exact_key_weight_payload_bytes": 16000000,
          "n": 1000000,
          "per_user_metric_series": 12000000,
          "seconds": 1.8302220839999999,
          "seed": 20261011,
          "top20_precision": 1,
          "top20_recall": 1,
          "untracked_checked": 999489,
          "weight_conserved": true,
          "weights_sha256_json": "c41012d5806983fafc92ffdc3e4db499e61c99af793d1259d8fcb511291ec540"
        },
        {
          "aggregate_metric_series": 12,
          "bound_violations": 0,
          "distinct_estimate": 993297.1699813675,
          "distinct_relative_error": 0.0067028300186324635,
          "events": 5000000,
          "exact_heap_delta_bytes": 37721424,
          "exact_json_bytes": 26534055,
          "exact_table_entries": 1000000,
          "fi_bytes": 10797,
          "fi_capacity": 512,
          "heap_delta_bytes": 87512,
          "hll_bytes": 16424,
          "hll_register_storage_bytes": 16384,
          "isolated_process": true,
          "minimum_exact_key_weight_payload_bytes": 16000000,
          "n": 1000000,
          "per_user_metric_series": 12000000,
          "seconds": 1.830910042,
          "seed": 20261012,
          "top20_precision": 1,
          "top20_recall": 1,
          "untracked_checked": 999488,
          "weight_conserved": true,
          "weights_sha256_json": "c41012d5806983fafc92ffdc3e4db499e61c99af793d1259d8fcb511291ec540"
        }
      ]
    },
    "small-lists": {
      "command": "venv/bin/python scripts/sketch_experiments.py",
      "evidence": "recorded/sketch-results.json",
      "field": "unions.1",
      "method": "Mean daily size of the pair of HLL++ payloads versus compact JSON for the pair of raw label lists.",
      "sha256": "b24585b61e820987ad0ff6599117b936eb1ff11ccfb5125f05d2b116f74ebc87",
      "values": {
        "raw_list_mean_bytes": 103.00983606557377,
        "sketch_mean_bytes": 116.7672131147541
      }
    },
    "storage": {
      "command": "venv/bin/python scripts/sketch_experiments.py",
      "evidence": "recorded/sketch-results.json",
      "field": "ranges.storage.tracelab",
      "method": "Sum the two platform-summary files per day; measure source JSONL and compressed download separately.",
      "sha256": "b24585b61e820987ad0ff6599117b936eb1ff11ccfb5125f05d2b116f74ebc87",
      "values": {
        "days": 305,
        "raw_bytes": 1245532297,
        "raw_compressed_bytes": 100939722,
        "raw_years_per_decimal_GB": 0.6704318242783318,
        "summary_bytes": 2093440,
        "summary_bytes_per_day": 6863.737704918033,
        "summary_files": 610,
        "summary_gzip_bytes": 222397,
        "summary_years_per_decimal_GB": 398.8862781237059
      }
    }
  },
  "environment_evidence": "recorded/run.json",
  "status": "Draft for review; site publication held"
}