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    "date": "2026-11-03",
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 "provenance": {
  "authors": [
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  "construction": "Priced construction calculus E-PEEL of codes/84-14-6.json ([[84,14,6]], max check weight 7; a two-block group-algebra code over SmallGroup(42,3) from arXiv:2610.13880): delete qubit 64 (0-based index in the parent file) together with its unique X check a23, and relabel the surviving qubits in increasing order of their parent indices. Consumer: github.com/unitaryfoundation/code-calculus @ 1b9a942, machine/priced_calculus.py.",
  "references": [
   "arXiv:2610.13880"
  ],
  "date": "2026-11-04",
  "notes": "Single-step priced-calculus E-PEEL child of board entry 84-14-6. verify/validate_candidate.py found no board entry sharing this code's fingerprint or Weisfeiler-Leman signature, local-Hadamard images included.",
  "model": "Claude Fable 5.1",
  "origin": "submission",
  "search_budget": {
   "ris_trials_per_side": 10000000
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 "family": "2bga-nonabelian",
 "circuit": {
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    "confidence": "upper_bound",
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   "X": {
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    "confidence": "upper_bound",
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  "rounds": 6,
  "stim_version": "1.16.0",
  "notes": "Johnson-coil + 4 span flags sequential extraction (max_flags=3 per check, 8 X + 8 Z edge-colored data CX layers per round, coloring candidate 0); generated by qldpc submit (research/circuit_autogen.py, seed 0), the first of up to 6 candidates whose RIS screen at 2 rounds found nothing below d; witnesses from RIS on ker(H_dem) at twice the gate's trial budget, validated in GF(2)",
  "contributed_by": {
   "by": [
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   "date": "2026-11-06",
   "method": "circuit_autogen schedule search (two-block interleaved, then layout, then generic), verified by verify/circuit_verify.py before writing"
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}