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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 construction family as the board's existing dense-packing column [[101,5,5]], [[197,5,7]], [[325,5,9]], [[485,5,11]], [[677,5,13]], which is the m=3 case of this parameterization and is reproduced by it exactly. This entry is the m=5 rung at d=5 and is not equivalent to any of them: n and k both differ. Distance is a witness-backed upper bound from 20000 RIS trials per side, not a certified exact distance."
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