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 "provenance": {
  "authors": [
   "Lin, Hsiang-Ku",
   "Pryadko, Leonid P."
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  "construction": "Two-block group algebra (2BGA) code over (C_10 x C_2) rtimes C_2: a={1, s r^5, r^5, s r^6}, b={1, s^2, r, s^2 r^3} (Lin & Pryadko, arXiv:2306.16400, Table 1).",
  "references": [
   "arXiv:2306.16400"
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  "date": "2023",
  "novelty": "known_parameters",
  "notes": "Literature baseline (arXiv:2306.16400, Lin & Pryadko, 28 Jun 2023). Two-block group algebra code reconstructed from the published group presentation; distance d=9 taken from the paper's Table 1 and certified by an explicit non-stabilizer witness on each side (regenerated via the research kit's RIS search). Literature novelty confirmed by manual cross-check: arXiv:2306.16400 Table 1 explicitly reports the [[80,9,9]] parameters with W=6 (reconstructed checks have weight 8). The verifier's 'literature novelty UNVERIFIED' label is by-design (validate_candidate.py performs no literature lookup) and is intentionally not overridden. 2D-local layout added 2026-07-27: simulated annealing over qubit-to-site assignments on a unit-spaced triangular grid (2 layers, capacity 1 per site per layer); measured interaction radius 5.291503 (bilayer); same code, same check matrices.",
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