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  "construction": "priced calculus C-DELETE-CHECK transform of codes/70-22-5.json",
  "references": [],
  "date": "2026-11-01",
  "notes": "",
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  "notes": "Johnson-coil + 4 span flags sequential extraction (max_flags=6 per check, 13 X + 13 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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}