{
  "frozen_utc": "2026-09-19T04:13:24.593645+00:00",
  "partition": "Only files with entry015 hash modulo3 !=0; excluded from both mixture pilots. Same CEB release and model hashes.",
  "selection": "Single-species 1.2-s passages as entry018. Deterministic rank before scores, at most12 distinct-file candidates/species,360 total. Keep up to4 baseline-eligible passages/species and require at least3 files/species. Cap16 species by fixed hash.",
  "primary": "Exactly same raw components and positions as baseline, .3-s gap, equal RMS, no clipping. Both temporal orders. Detection threshold0.5.",
  "advance_gate": "At least8 species and24 source passages; pooled non-overlap loss fraction >=0.20, with at least4 species affected in >=2 distinct recording pairs; report macro-species loss and variation. If gate fails, report failure without retuning.",
  "secondary": "Simultaneous mixtures; same-species mixtures; exact four-presence-state enumeration at independent pA=pB=.5 to measure induced phi, with and without removing pairs exhibiting cross-species baseline false positives. Include silence model scores.",
  "uncertainty": "Report source files and species as units; repeated combinations are not independent biological samples. Multiway file resampling confidence intervals are conditional on included species and baseline-eligible passages.",
  "later_controls": "Before full-study conclusions, test fixed-normalization intervention and additional natural ambient background; these diagnose or limit the claim and cannot substitute for the primary validation gate."
}