{
 "schema_version": "0.2",
 "name": "[[30,8,3]]",
 "code_type": "CSS",
 "n": 30,
 "k": 8,
 "checks": {
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 "distance": {
  "d": 3,
  "X": {
   "value": 3,
   "confidence": "upper_bound",
   "witness": [
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    5,
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  "Z": {
   "value": 3,
   "confidence": "upper_bound",
   "witness": [
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 },
 "provenance": {
  "authors": [
   "@mathysrennela"
  ],
  "construction": "Reconstructed from qecdb.org record 67a4b0129edf81e4b7e670ad (https://qecdb.org/codes/67a4b0129edf81e4b7e670ad); 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: hyperbolic_2d; database distance claim d=3 (lower 3, upper 3).",
  "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": "topological",
 "locality": {
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  "layers": 1,
  "interaction_radius": 4.0,
  "contributed_by": {
   "by": [
    "@dorakingx"
   ],
   "date": "2026-10-04",
   "method": "Simulated annealing over site assignments on an integer grid with the repo's own research/local2d/fold_layout.search_layout (max-diameter objective, several bounding boxes and seeds); single layer at radius 4 tried first, then two layers at 7. Radius and per-site occupancy re-measured with the verifier's rule."
  }
 }
}