{
  "step": "C480",
  "status": "completed",
  "title": "Complete 1150 Source Grammar and Fixed-E Selection",
  "previous_certificate_sha256": "ed81ad0635fbdf2d21e17da032c15b384bdb9ded8b500333c548a637f7ce1612",
  "bindings": {
    "step": "STEP.json",
    "source_manifest": "SOURCE_MANIFEST.json",
    "report": "490d_C480_Complete_1150_Source_Grammar_and_Fixed_E_Selection_20260925.md",
    "checkpoint": "490d_Mirror_Checkpoint_After_C480_20260925.md",
    "data": "evidence/DATA.json",
    "results": "evidence/RESULTS.json",
    "calculation": "evidence/CALCULATION.py",
    "verifier": "evidence/check.py",
    "next_step_decision": "NEXT_STEP_DECISION.json",
    "replay": "REPLAY.json",
    "control_integrity": "CONTROL_INTEGRITY.json",
    "readme": "README.md"
  },
  "step_sha256": "b4076a2946b23829c3c4f15c5c97251e03558157a5e4b4b147fad081684c9739",
  "source_manifest_sha256": "27b7208844a3a6cb02af48e52e139734f84756bb3794e20b6a2e72adf441bcfa",
  "report_sha256": "7864fa4fe56e9b2c5f3f6511922fd6a275d7279efd0e7765244aa56db3e49b2f",
  "checkpoint_sha256": "0e2dcbb9dad9ed346ccfb6dcd6628e86f2573823bb9f0437888a56de25b897ad",
  "data_sha256": "8c454f9d40694603ee866f91d78e0e3d9872b3c1a2aee3953a342470405f1347",
  "results_sha256": "32e16df465b06f6b185a9a897bddffb306595eb3f0c214c4b733c53433471733",
  "calculation_sha256": "aa87bce17a91902e5563a16807321273713f03bebbb30afba64e0f870057ec2b",
  "verifier_sha256": "9e1a0ebaab8d6014ce38ab9337261b39c64eb6ab46b4c4743885a1416c671c28",
  "next_step_decision_sha256": "240274b1cfdddefd89ad6dbe0abbff0f7908ebd3f786d51b0503a164ee455142",
  "replay_sha256": "30f8159dd9e661f2662d1273282c93edc7ee59a16b658769758e097b43d31bc4",
  "control_integrity_sha256": "dbec3a0b6a3d804c2b0dc042e5864960c94d9b8a8b6358f477c6c734c27c8b33",
  "readme_sha256": "721b91ef212c46cd2ca0919e8967714719574e7884b62c6d5206bc5e9fae3582",
  "assertions_passed": 717,
  "source_checks_passed": 52,
  "main_result": "The complete 51-coordinate/101-label 1150 inventory has four disjoint templates (24+24+2+1 pairs); all 50 extra labels are qualified SP/LXX aliases. Seven exact role/context signatures account for every label. The 408 fixed-E trials yield 392 fractional outputs, 13 incomplete integer pairs and the inherited three successes, only one with a complete 2K predecessor.",
  "limits": "Finite inherited source register and fixed eight pivots only. Same-agent cross-checks; no historical-design inference.",
  "canonical_or_graph_edits": false,
  "new_independent_agent_review": false,
  "next_step_executed": false,
  "next_proposed_step": "C481: test source/context-preserving composition in the finite 1058/1150/1250 template system without adding source points or operators."
}