{
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 "name": "[[30,6,5]]",
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  "X": {
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   "confidence": "upper_bound",
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   "confidence": "upper_bound",
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 "provenance": {
  "authors": [
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  "construction": "Coprime BB on Z_3 x Z_5: A=[(0,0),(1,1),(0,3),(1,4)], B=[(0,0),(1,1),(0,3),(1,2)]. Inherited reference arXiv:2408.10001v6; Union Alpha 1.0 assisted selection, verification and submission.",
  "origin": "submission",
  "date": "2026-09-17",
  "model": "Union Alpha 1.0",
  "notes": "Recovered literature-derived candidate, not a claim of original invention. Inherited reference: arXiv:2408.10001v6 (paper attribution not independently verified). Literature novelty unverified. No exact or WL duplicate detected; (30,6) absent from all 663 board documents at 6995fc4f72a33fcbea27a244da230fcfc370e108."
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 "family": "bivariate-bicycle",
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  "contributed_by": {
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   "date": "2026-09-19",
   "method": "simulated annealing over integer grid sites (research/local2d/fold_layout.py)"
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}