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 "provenance": {
  "authors": [
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  "construction": "Reconstructed from qecdb.org record 6a422a12d15d481af09df8a4 (https://qecdb.org/codes/6a422a12d15d481af09df8a4); the record's H field is read as binary symplectic rows and split by rowspace (rank(A|B) = rank(A) + rank(B)), keeping the lightest independent basis of each part; n, k and the check weight recomputed here, witnesses from the kit's random search at the trials below. Database description: 2BGA w=8 wa=4 wb=4 G=SmallGroup(63, 2); arXiv:2306.16400; database distance claim d=9 (lower None, upper None).",
  "origin": "submission",
  "date": "2026-09-27",
  "model": "Mimo-V2.6-Free",
  "notes": "Equivalence assessed against the board: no exact stabilizer-group fingerprint match and no Weisfeiler-Leman signature match to any existing entry."
 },
 "family": "generalized-bicycle"
}