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 "provenance": {
  "authors": [
   "@nihoniumqc"
  ],
  "construction": "Central CSS tensor product of board inputs 8-6-2 and 20-8-4, in that order, using arXiv:2609.37231 Eqs. (14)-(15). Retained zero-based X/Z row indices: [[0], [0], [0, 1, 2, 3, 4, 5], [0, 1, 2, 3, 4, 5]]. Input attribution: 8-6-2: @MathysRennela; 20-8-4: @EthanFeld. The research note gives the complete reproducible matrix recipe.",
  "references": [
   "https://arxiv.org/abs/2609.37231",
   "https://arxiv.org/abs/1512.07081",
   "https://arxiv.org/abs/2306.16400"
  ],
  "date": "2026-10-03",
  "notes": "Known tensor construction; literature novelty unverified. Final duplicate and WL-signature checks use upstream da1f2c0a1611b215376b249c139f4951e2394418. Neither check constitutes exhaustive equivalence testing. X and Z distances remain witnessed upper bounds.",
  "model": "GPT-6",
  "origin": "submission",
  "novelty": "unknown",
  "search_budget": {
   "candidates_screened": 7,
   "tool": "RIS pilot and witness-returning confirmation",
   "wall_clock_hours": 0.004706427198888877,
   "notes": "The table reports confirmation after the initial 500-trial-per-side pilot. The deepest rung is one million trials per side.",
   "ris_trials_per_side": 1000000
  }
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  "contributed_by": {
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   "date": "2026-10-04",
   "method": "Simulated annealing over site assignments on an integer grid with the repo's own research/local2d/fold_layout.search_layout (max-diameter objective, several bounding boxes and seeds); single layer at radius 4 tried first, then two layers at 7. Radius and per-site occupancy re-measured with the verifier's rule."
  }
 }
}
