music/records/exemplars/EX_055.acquisition.json
{
"schema": "exemplar-acquisition-proof/v1",
"verdict": "PROOF_OK",
"track_id": "EX_055",
"source_path": "D:\\audio\\exemplars\\ULTRAKILL_INFINITE_HYPERDEATH\\Meganeko - ULTRAKILL- INFINITE HYPERDEATH - 22 The Cyber Grind.flac",
"sha256": "1b11f7d7bc75c2b37e6310018d6a77dd0e2f77c73fd56d3fa00c543d48baf5d2",
"bytes": 35776407,
"source_format": "flac",
"source_codec": "flac",
"source_sample_rate_hz": 44100,
"lossless_source": true,
"decoder": "ffmpeg.exe :: ffmpeg version 9.0-full_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developers",
"measured_at": "2026-08-06T13:25:25+00:00",
"measurements_summary": {
"duration_s": 270.316,
"sections": 16,
"baseline_bpm": 95.7,
"key": "G",
"mode": "minor",
"max_lanes": 9,
"melodic_salience": 0.4939,
"note_count": 130,
"events": {
"drops": 8,
"raises": 8,
"breaks": 1,
"tuttis": 68
},
"silence_budget": 0.009,
"dynamic_range_db": 8.19,
"onset_type": "ostinato_first",
"time_to_hook_s": 0.209,
"complexity_boundary_step_share": 0.333
},
"formula_card": "build/audio/exemplars/formula_cards/EX_055.json",
"formula_card_page": "build/audio/exemplars/formula_cards/EX_055.md",
"corpus_match": {
"matched": true,
"score": 0.98,
"title_score": 1.0,
"margin": 0.7204,
"candidates": [
{
"id": "EX_055",
"t": "The Cyber Grind",
"g": "Ultrakill",
"score": 0.98,
"title_score": 1.0
},
{
"id": "EX_101",
"t": "Bowser's Road",
"g": "Super Mario 64",
"score": 0.2596,
"title_score": 0.31
},
{
"id": "EX_016",
"t": "Kaer Morhen",
"g": "The Witcher 3",
"score": 0.2483,
"title_score": 0.2818
},
{
"id": "EX_048",
"t": "Rivers in the Desert",
"g": "Persona 5",
"score": 0.2438,
"title_score": 0.2756
},
{
"id": "EX_113",
"t": "To Good Friends",
"g": "Chrono Trigger",
"score": 0.2403,
"title_score": 0.2862
}
],
"evidence": {
"tag_title": "The Cyber Grind",
"tag_album": "ULTRAKILL: INFINITE HYPERDEATH",
"tag_artist": "Meganeko",
"filename_stem": "Meganeko - ULTRAKILL- INFINITE HYPERDEATH - 22 The Cyber Grind"
}
},
"corpus_row": {
"id": "EX_055",
"t": "The Cyber Grind",
"g": "Ultrakill",
"c": "Meganeko",
"k": "BATTLE",
"s": "ACQUIRED"
},
"corpus_flip": {
"flipped": true,
"from": "MISSING",
"to": "ACQUIRED"
},
"control": {
"controls_passed": 24,
"controls_total": 24,
"ran_at": "2026-08-06T11:14:13+00:00",
"ffmpeg_version": "ffmpeg version 9.0-full_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developers",
"note": "This measurement is admissible only because the positive control recovered its planted answers in the same process, immediately before it."
},
"legal_posture": "ANALYSIS FOR UNDERSTANDING ONLY. Audio lawfully obtained by Josh, read from disk, measured, and never copied, redistributed, or used as model input of any kind."
}