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 "provenance": {
  "authors": [
   "@MathysRennela"
  ],
  "construction": "Bivariate bicycle code QC(A,B) on Z_12 x Z_6 with weight-4 generators A = x y^2 + x^2 + x^4 y + x^5 y^2, B = x^5 + x^5 y^5 + x^6 y^4 + x^9 y^5 (weight-8 checks). Found by a weight-8 gap sweep over the (k,d) gaps of the weight-8 cell frontier and grids not searched by arXiv:2609.06572.",
  "origin": "submission",
  "date": "2026-09-09",
  "model": "Omen Alpha 1.0",
  "notes": "New parameters (submitter claim). Distance: RIS upper bound d<=16 (20k trials), corroborated by BP+OSD at 200k trials/side (weight-16 logicals, nothing lighter); exact certification not run.",
  "novelty": "new_parameters"
 },
 "family": "bivariate-bicycle"
}