{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:A2IB647EX3BFJ7FKHWZODSBSTV","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"dcccc9883952f347cd0c61d700a4b21c41d9bc9630b5afa5d1aa3b15fbd1fa97","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-09T07:36:25Z","title_canon_sha256":"8e3ad34090c3bccfce1ae4093b9798eaadb1388a570a9afc0a66e7adb34b0a13"},"schema_version":"1.0","source":{"id":"2311.05182","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.05182","created_at":"2026-07-05T07:59:19Z"},{"alias_kind":"arxiv_version","alias_value":"2311.05182v3","created_at":"2026-07-05T07:59:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.05182","created_at":"2026-07-05T07:59:19Z"},{"alias_kind":"pith_short_12","alias_value":"A2IB647EX3BF","created_at":"2026-07-05T07:59:19Z"},{"alias_kind":"pith_short_16","alias_value":"A2IB647EX3BFJ7FK","created_at":"2026-07-05T07:59:19Z"},{"alias_kind":"pith_short_8","alias_value":"A2IB647E","created_at":"2026-07-05T07:59:19Z"}],"graph_snapshots":[{"event_id":"sha256:4c7931390e9cea32044c54e143a1af1851081f7d6a96ff1d2f0824dcc88bf9f2","target":"graph","created_at":"2026-07-05T07:59:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2311.05182/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Theoretical studies of angular momentum transport suggest that isolated stellar-mass black holes are born with negligible dimensionless spin magnitudes $\\chi \\lesssim 0.01$. However, recent gravitational-wave observations indicate $\\gtrsim 40\\%$ of binary black hole systems contain at least one black hole with a non-negligible spin magnitude. One explanation is that the first-born black hole spins up the stellar core of what will become the second-born black hole through tidal interactions. Typically, the second-born black hole is the ``secondary'' (less-massive) black hole, though, it may bec","authors_text":"Christian Adamcewicz, Eric Thrane, Paul D. Lasky, Shanika Galaudage","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-09T07:36:25Z","title":"Which black hole is spinning? Probing the origin of black-hole spin with gravitational waves"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.05182","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:a4d4ec35872b462dc32e69ef50d456b57351623a673375bf16f6fabf972d304b","target":"record","created_at":"2026-07-05T07:59:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"dcccc9883952f347cd0c61d700a4b21c41d9bc9630b5afa5d1aa3b15fbd1fa97","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-09T07:36:25Z","title_canon_sha256":"8e3ad34090c3bccfce1ae4093b9798eaadb1388a570a9afc0a66e7adb34b0a13"},"schema_version":"1.0","source":{"id":"2311.05182","kind":"arxiv","version":3}},"canonical_sha256":"06901f73e4bec254fcaa3db2e1c8329d64b562dae93a8f13013e438702c7404b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"06901f73e4bec254fcaa3db2e1c8329d64b562dae93a8f13013e438702c7404b","first_computed_at":"2026-07-05T07:59:19.506536Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:59:19.506536Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8gzL2sFs3Pf+s+cVaojUymFHFXydryHrkpwEqiWcgi35Q+0pIkWCKoO2gAkq77eKGHtB3/D/km2P0A6gqT9rDA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:59:19.507013Z","signed_message":"canonical_sha256_bytes"},"source_id":"2311.05182","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a4d4ec35872b462dc32e69ef50d456b57351623a673375bf16f6fabf972d304b","sha256:4c7931390e9cea32044c54e143a1af1851081f7d6a96ff1d2f0824dcc88bf9f2"],"state_sha256":"19a1a7de10c00efef638ba1e54aac0c80eb29870f04ab3f535537497e2805ffd"}