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 "provenance": {
  "authors": [
   "@msilve160"
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  "construction": "Planar hyperbolic {5,5} code, literature reproduction from github.com/QEC-pages/Quantum_LDPC_Codes @ 1c95489383564e4dc2cce517de00d64d6f2c4f56, Hyperbolic_Codes_Planar.zip, parity-check matrices for N=150. Same source repository already used for codes/720-122-8.json, codes/864-146-8.json, codes/896-194-6.json, codes/900-182-8.json, codes/960-258-6.json (Seam D, fieldnotes/2026-09-18-hackathon-1155-frontier-map-and-playbook.md); this pulls a different (p,q,N) entry from the same pinned catalog (Hyperbolic_Codes.tsv) that those five did not use. CSS code, edge model.",
  "references": [
   "github.com/QEC-pages/Quantum_LDPC_Codes"
  ],
  "date": "2026-09-19",
  "notes": "",
  "model": "Claude Sonnet 5"
 },
 "family": "topological"
}