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 "provenance": {
  "authors": [
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  "construction": "contributed via qldpc submit",
  "origin": "submission",
  "date": "2026-08-20",
  "model": "Claude Opus 5",
  "notes": "Same multi-band construction as the board's [[126,6,5]], [[202,10,5]], [[278,14,5]], at rows=3: k = 3*3-1 = 8. Same k as [[112,8,5]] but a different code (different n; this one carries a layout). Pareto scope stated honestly: frontier in the 8 layout-restricted cells; in the 4 unrestricted cells [[112,8,5]] dominates it. Distance is a witness-backed upper bound from 20000 RIS trials per side, not a certified exact distance."
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