{
  "artifact": "s06_weka_prefix_hit_rate",
  "config_path": "configs/s06_weka_prefix_hit_rate.yaml",
  "sealed_utc": "2026-09-02T22:48:10.067760+00:00",
  "threshold": {
    "ratio_orientation": "not a paired ratio; hit_rate = hits / total_blocks over all requests of all traces, turn 0 counted as 0 hits",
    "published_value": 0.9657,
    "published_total_blocks": 129409824,
    "reproduce_within_pp": 0.5,
    "definition_a": "contiguous common prefix of hash_ids between request t and request t-1 within a trace",
    "definition_b": "any block id previously seen in the same trace (unbounded local cache)",
    "verdict_rule": "REPRODUCES if |a - 0.9657| <= 0.005 and total blocks match; else publish which definition reproduces, or neither"
  },
  "threshold_sha256": "39fbbd9e462622217c77bae97852248e1394b87c3a7b54a33951013c0d61a3c5",
  "config_sha256": "1169518d32f227996638f0506c60c95166b479efd0bf1a7a6e17530aafe6c009",
  "config": {
    "artifact": "s06_weka_prefix_hit_rate",
    "sprint": "S06-C3",
    "source": {
      "dataset": "semianalysisai/cc-traces-weka-042026",
      "url": "https://huggingface.co/datasets/semianalysisai/cc-traces-weka-042026",
      "license": "Apache-2.0",
      "file": "traces.jsonl",
      "block_tokens": 64,
      "hash_id_scope": "local"
    },
    "controls": {
      "negative_shuffled": "hash_ids shuffled within each request -- definition (a) must collapse, (b) must not",
      "negative_fresh": "every request's hash_ids replaced by fresh ids -- both definitions must read 0"
    },
    "preregistered_threshold": {
      "ratio_orientation": "not a paired ratio; hit_rate = hits / total_blocks over all requests of all traces, turn 0 counted as 0 hits",
      "published_value": 0.9657,
      "published_total_blocks": 129409824,
      "reproduce_within_pp": 0.5,
      "definition_a": "contiguous common prefix of hash_ids between request t and request t-1 within a trace",
      "definition_b": "any block id previously seen in the same trace (unbounded local cache)",
      "verdict_rule": "REPRODUCES if |a - 0.9657| <= 0.005 and total blocks match; else publish which definition reproduces, or neither"
    }
  },
  "git_rev": "9ad2740",
  "seal_convention": "verifycore.canonical_seal_bytes (frozen)",
  "rule": "The experiment runner verifies this hash before spending anything. A changed threshold aborts the run rather than quietly redefining success."
}