{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:ID72AT6VM2H57VQVUU5DATLCQ6","short_pith_number":"pith:ID72AT6V","schema_version":"1.0","canonical_sha256":"40ffa04fd5668fdfd615a53a304d6287b4a46b04eb45f3bfb6d0702050b56fae","source":{"kind":"arxiv","id":"1107.5081","version":2},"attestation_state":"computed","paper":{"title":"Where is the extremal Kerr ISCO?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"Ted Jacobson","submitted_at":"2011-07-25T21:47:47Z","abstract_excerpt":"Although the circular photon orbit and ISCO for the Kerr black hole remain distinct from each other and from the horizon in the extremal spin limit on a constant Boyer-Lindquist time slice, on a horizon-crossing slice they both coincide with the null generators of the horizon."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1107.5081","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-07-25T21:47:47Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"41a1a53b1ce4048229ea11bafac4949ec6fb272f729ec9c678f40011dc50e65b","abstract_canon_sha256":"dd2410c41d137d7749d9b65ea653a9d18018854db2c6f741be2e160475eaa4a8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:10.091382Z","signature_b64":"5XFzmcJ34w+GBcs3LdTmk/CPdz4Kg59zbGWXFHq8l7qFa1J9H3AN/AICstYbTz5KV2SM4GTXkT+XJkHdtTx7Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"40ffa04fd5668fdfd615a53a304d6287b4a46b04eb45f3bfb6d0702050b56fae","last_reissued_at":"2026-05-18T02:01:10.090556Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:10.090556Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Where is the extremal Kerr ISCO?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"Ted Jacobson","submitted_at":"2011-07-25T21:47:47Z","abstract_excerpt":"Although the circular photon orbit and ISCO for the Kerr black hole remain distinct from each other and from the horizon in the extremal spin limit on a constant Boyer-Lindquist time slice, on a horizon-crossing slice they both coincide with the null generators of the horizon."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.5081","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1107.5081","created_at":"2026-05-18T02:01:10.090705+00:00"},{"alias_kind":"arxiv_version","alias_value":"1107.5081v2","created_at":"2026-05-18T02:01:10.090705+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.5081","created_at":"2026-05-18T02:01:10.090705+00:00"},{"alias_kind":"pith_short_12","alias_value":"ID72AT6VM2H5","created_at":"2026-05-18T12:26:30.835961+00:00"},{"alias_kind":"pith_short_16","alias_value":"ID72AT6VM2H57VQV","created_at":"2026-05-18T12:26:30.835961+00:00"},{"alias_kind":"pith_short_8","alias_value":"ID72AT6V","created_at":"2026-05-18T12:26:30.835961+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ID72AT6VM2H57VQVUU5DATLCQ6","json":"https://pith.science/pith/ID72AT6VM2H57VQVUU5DATLCQ6.json","graph_json":"https://pith.science/api/pith-number/ID72AT6VM2H57VQVUU5DATLCQ6/graph.json","events_json":"https://pith.science/api/pith-number/ID72AT6VM2H57VQVUU5DATLCQ6/events.json","paper":"https://pith.science/paper/ID72AT6V"},"agent_actions":{"view_html":"https://pith.science/pith/ID72AT6VM2H57VQVUU5DATLCQ6","download_json":"https://pith.science/pith/ID72AT6VM2H57VQVUU5DATLCQ6.json","view_paper":"https://pith.science/paper/ID72AT6V","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1107.5081&json=true","fetch_graph":"https://pith.science/api/pith-number/ID72AT6VM2H57VQVUU5DATLCQ6/graph.json","fetch_events":"https://pith.science/api/pith-number/ID72AT6VM2H57VQVUU5DATLCQ6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ID72AT6VM2H57VQVUU5DATLCQ6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ID72AT6VM2H57VQVUU5DATLCQ6/action/storage_attestation","attest_author":"https://pith.science/pith/ID72AT6VM2H57VQVUU5DATLCQ6/action/author_attestation","sign_citation":"https://pith.science/pith/ID72AT6VM2H57VQVUU5DATLCQ6/action/citation_signature","submit_replication":"https://pith.science/pith/ID72AT6VM2H57VQVUU5DATLCQ6/action/replication_record"}},"created_at":"2026-05-18T02:01:10.090705+00:00","updated_at":"2026-05-18T02:01:10.090705+00:00"}