{
  "kernel": "run_sabrina_superrotation_charge_cancellation",
  "role": "post-computation assertion only",
  "schema": "ouroboros_scientific_reference_assertion_v1",
  "scientific_payload": {
    "basis": [
      "D_z^3 Y^z C^zz",
      "D^2 D_zbar Y_zbar C^zbarzbar",
      "u D_z^3 Y^z N^zz",
      "u D^2 D_zbar Y_zbar N^zbarzbar"
    ],
    "claim_boundary": {
      "capabilities_removed": [],
      "holomorphic_restriction": "Y^A=(Y^z,0)",
      "source_correction_claimed": false,
      "unrestricted_extension_reason": "The source-derived coefficient map fixes four holomorphic-sector components and leaves four independent conjugate-sector components unfixed.",
      "unrestricted_two_component_extension_proven": false
    },
    "classification": "source_consistent_holomorphic_superrotation_charge_exactly_reduced",
    "coefficient_certificate": {
      "integrated_boundary_correction": [
        "1",
        "1/2",
        "1",
        "1/2"
      ],
      "renormalized_symplectic_charge": [
        "-1",
        "-1/2",
        "1",
        "-1/2"
      ],
      "sum_after_reinstating_1_over_32piG": [
        "0",
        "0",
        "1/(16*pi*G)",
        "0"
      ],
      "sum_before_normalization": [
        "0",
        "0",
        "2",
        "0"
      ]
    },
    "exact_checks": {
      "antiholomorphic_news_term_cancels": true,
      "archive_hash_matches": true,
      "both_shear_terms_cancel": true,
      "holomorphic_news_term_doubles": true,
      "holomorphic_restriction_present": true,
      "holomorphic_source_map_rank_four": true,
      "member_hash_matches": true,
      "normalization_reinstatement_present": true,
      "reinstated_normalization_is_exact": true,
      "source_blocks_match": true,
      "source_equation_labels_unique": true,
      "unrestricted_extension_has_four_unfixed_components": true
    },
    "finding": "Under the source's explicit Y^A=(Y^z,0) restriction, the boundary term cancels both shear terms and the anti-holomorphic news term, doubles only the holomorphic news term, and yields exactly the displayed 1/(16 pi G) charge.",
    "paper": {
      "arxiv_id": "2005.08990",
      "source_equations": [
        "mQY",
        "dQ",
        "QYsoft",
        "udQ",
        "QYfinal"
      ],
      "title": "Asymptotic Symmetries and Celestial CFT"
    },
    "result_version": "sabrina_superrotation_charge_cancellation_v1",
    "source_evidence": {
      "archive_sha256": "c3e707827b4e21604f131a38a77ff84650ac52232b376fab6cf39b36d6a92be8",
      "block_hashes": {
        "QYfinal": "3382b7cf6e175a7d1bfd2b1fa33dbea984ddba40d32c7150e380b886e3020cb8",
        "QYsoft": "a9b55f82a2c4f72505a2e3517be55689d901d68067d0bb29b07c07e71a3510d7",
        "dQ": "397652f6ece651dfe3427c6aa4512743f8e83042e8e8e7baa4b64c5aa2121ef0",
        "mQY": "2b22626481d991b571e0522af2da1db4f732bbe94c519313bfd1138e37aa6b25",
        "udQ": "d8ef18cee3e99b07c7a82ed04334c5bdf2c64c6d72eb9a17d3b34032e3157b41"
      },
      "checks": {
        "archive_hash_matches": true,
        "holomorphic_restriction_present": true,
        "member_hash_matches": true,
        "normalization_reinstatement_present": true,
        "source_blocks_match": true,
        "source_equation_labels_unique": true
      }
    },
    "status": "complete"
  },
  "scientific_payload_sha256": "9081bdaa476d9558567b5363b9a85389cdaf84998fd93684f74822acd8c1ad47"
}