{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:SEKDHI4RBHT4W7JOPPXQ3EISXK","short_pith_number":"pith:SEKDHI4R","canonical_record":{"source":{"id":"2412.03461","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-12-04T16:51:11Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"3f93033c90b62b6a8f93b295abfb6b7a90ba7f219a2ebb955aff2835e78d5560","abstract_canon_sha256":"6aa9bc9818903765ea377054e5f81d5078c75c8caa9753aba0d62bc923aaf1c3"},"schema_version":"1.0"},"canonical_sha256":"911433a39109e7cb7d2e7bef0d9112ba8be747e16d1512e64df33b94d92d0a08","source":{"kind":"arxiv","id":"2412.03461","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.03461","created_at":"2026-07-05T09:44:29Z"},{"alias_kind":"arxiv_version","alias_value":"2412.03461v1","created_at":"2026-07-05T09:44:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.03461","created_at":"2026-07-05T09:44:29Z"},{"alias_kind":"pith_short_12","alias_value":"SEKDHI4RBHT4","created_at":"2026-07-05T09:44:29Z"},{"alias_kind":"pith_short_16","alias_value":"SEKDHI4RBHT4W7JO","created_at":"2026-07-05T09:44:29Z"},{"alias_kind":"pith_short_8","alias_value":"SEKDHI4R","created_at":"2026-07-05T09:44:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:SEKDHI4RBHT4W7JOPPXQ3EISXK","target":"record","payload":{"canonical_record":{"source":{"id":"2412.03461","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-12-04T16:51:11Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"3f93033c90b62b6a8f93b295abfb6b7a90ba7f219a2ebb955aff2835e78d5560","abstract_canon_sha256":"6aa9bc9818903765ea377054e5f81d5078c75c8caa9753aba0d62bc923aaf1c3"},"schema_version":"1.0"},"canonical_sha256":"911433a39109e7cb7d2e7bef0d9112ba8be747e16d1512e64df33b94d92d0a08","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:44:29.939455Z","signature_b64":"MOIOCXh9w01vjYagUPkVaATIh6l7tf52CmclWh/dcpSnstVgjTDs7z07j2fDP851wpFQ0ObxRfa4CHcNNvKXBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"911433a39109e7cb7d2e7bef0d9112ba8be747e16d1512e64df33b94d92d0a08","last_reissued_at":"2026-07-05T09:44:29.938976Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:44:29.938976Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2412.03461","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T09:44:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d5meAFGqcn6jZ5EGF1mKr8/h7jPTQP+pvWAUgB1LJj7C+EO61lai5kwKUmFz7Od6oxHcsOdJlCKy6MS2rVYGDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T12:38:08.790880Z"},"content_sha256":"2e9b377a5b0bba63782e22a33cfe21ff12a551fbb0d861670f5b24430d7b0567","schema_version":"1.0","event_id":"sha256:2e9b377a5b0bba63782e22a33cfe21ff12a551fbb0d861670f5b24430d7b0567"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:SEKDHI4RBHT4W7JOPPXQ3EISXK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Revising the Spin and Kick Connection in Isolated Binary Black Holes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Vicky Kalogera, Vishal Baibhav","submitted_at":"2024-12-04T16:51:11Z","abstract_excerpt":"The origin of black hole (BH) spins remains one of the least understood aspects of BHs. Despite many uncertainties, it is commonly assumed that if BHs originated from isolated massive star binaries, their spins should be aligned with the orbital angular momentum of the binary system. This assumption stems from the notion that BHs inherit their spins from their progenitor stars. In this study, we relax this long-held viewpoint and explore various mechanisms that can spin up BHs before or during their formation. In addition to natal spins, we discuss physical processes that can spin BHs isotropi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.03461","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2412.03461/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T09:44:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4DzfvwQwC1V0V2eog4lRUr1x7Ufg0b37+z/YlRTl44SxhriqblqdTLH/82ooZG6tRby79q7ZfcFm7dTayvEUBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T12:38:08.791387Z"},"content_sha256":"a4ef0c41b524476e6cbadeb4416d0db258a721721f32e12ba64b2232bdcfd8f9","schema_version":"1.0","event_id":"sha256:a4ef0c41b524476e6cbadeb4416d0db258a721721f32e12ba64b2232bdcfd8f9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SEKDHI4RBHT4W7JOPPXQ3EISXK/bundle.json","state_url":"https://pith.science/pith/SEKDHI4RBHT4W7JOPPXQ3EISXK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SEKDHI4RBHT4W7JOPPXQ3EISXK/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-04T12:38:08Z","links":{"resolver":"https://pith.science/pith/SEKDHI4RBHT4W7JOPPXQ3EISXK","bundle":"https://pith.science/pith/SEKDHI4RBHT4W7JOPPXQ3EISXK/bundle.json","state":"https://pith.science/pith/SEKDHI4RBHT4W7JOPPXQ3EISXK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SEKDHI4RBHT4W7JOPPXQ3EISXK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:SEKDHI4RBHT4W7JOPPXQ3EISXK","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":"6aa9bc9818903765ea377054e5f81d5078c75c8caa9753aba0d62bc923aaf1c3","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-12-04T16:51:11Z","title_canon_sha256":"3f93033c90b62b6a8f93b295abfb6b7a90ba7f219a2ebb955aff2835e78d5560"},"schema_version":"1.0","source":{"id":"2412.03461","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.03461","created_at":"2026-07-05T09:44:29Z"},{"alias_kind":"arxiv_version","alias_value":"2412.03461v1","created_at":"2026-07-05T09:44:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.03461","created_at":"2026-07-05T09:44:29Z"},{"alias_kind":"pith_short_12","alias_value":"SEKDHI4RBHT4","created_at":"2026-07-05T09:44:29Z"},{"alias_kind":"pith_short_16","alias_value":"SEKDHI4RBHT4W7JO","created_at":"2026-07-05T09:44:29Z"},{"alias_kind":"pith_short_8","alias_value":"SEKDHI4R","created_at":"2026-07-05T09:44:29Z"}],"graph_snapshots":[{"event_id":"sha256:a4ef0c41b524476e6cbadeb4416d0db258a721721f32e12ba64b2232bdcfd8f9","target":"graph","created_at":"2026-07-05T09:44:29Z","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/2412.03461/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The origin of black hole (BH) spins remains one of the least understood aspects of BHs. Despite many uncertainties, it is commonly assumed that if BHs originated from isolated massive star binaries, their spins should be aligned with the orbital angular momentum of the binary system. This assumption stems from the notion that BHs inherit their spins from their progenitor stars. In this study, we relax this long-held viewpoint and explore various mechanisms that can spin up BHs before or during their formation. In addition to natal spins, we discuss physical processes that can spin BHs isotropi","authors_text":"Vicky Kalogera, Vishal Baibhav","cross_cats":["gr-qc"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-12-04T16:51:11Z","title":"Revising the Spin and Kick Connection in Isolated Binary Black Holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.03461","kind":"arxiv","version":1},"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":"sha256:2e9b377a5b0bba63782e22a33cfe21ff12a551fbb0d861670f5b24430d7b0567","target":"record","created_at":"2026-07-05T09:44:29Z","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":"6aa9bc9818903765ea377054e5f81d5078c75c8caa9753aba0d62bc923aaf1c3","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-12-04T16:51:11Z","title_canon_sha256":"3f93033c90b62b6a8f93b295abfb6b7a90ba7f219a2ebb955aff2835e78d5560"},"schema_version":"1.0","source":{"id":"2412.03461","kind":"arxiv","version":1}},"canonical_sha256":"911433a39109e7cb7d2e7bef0d9112ba8be747e16d1512e64df33b94d92d0a08","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"911433a39109e7cb7d2e7bef0d9112ba8be747e16d1512e64df33b94d92d0a08","first_computed_at":"2026-07-05T09:44:29.938976Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:44:29.938976Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MOIOCXh9w01vjYagUPkVaATIh6l7tf52CmclWh/dcpSnstVgjTDs7z07j2fDP851wpFQ0ObxRfa4CHcNNvKXBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T09:44:29.939455Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.03461","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e9b377a5b0bba63782e22a33cfe21ff12a551fbb0d861670f5b24430d7b0567","sha256:a4ef0c41b524476e6cbadeb4416d0db258a721721f32e12ba64b2232bdcfd8f9"],"state_sha256":"c8111de532129b58e85f57bc2c24d5b46c804a773d6b2bde6834eed124cbf293"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZSqXbIV44jlPiHuOqbubph0wvUNlDMi6v/10xEA/o6w/Asbm+2MvSzAsj92HnyusVvwLgXliG+OufkczY7DrDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T12:38:08.795641Z","bundle_sha256":"aa1f77ad9b6c1adda526ac3beab2bef33d2b6c5264a0d38f247cfa785b49d338"}}