{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:K6OZY65MYEEPTC7WNB6T56FYD4","short_pith_number":"pith:K6OZY65M","canonical_record":{"source":{"id":"2410.02875","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-10-03T18:03:27Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"8ba6e3476e8bd8839935e385d57c4ee47dc2f5d1753633e9e7510da3a2454696","abstract_canon_sha256":"59578d5a4857cb1f04a7e82d0b85ad1c2a9b52ca3026d73993ff132d6c5a18bc"},"schema_version":"1.0"},"canonical_sha256":"579d9c7bacc108f98bf6687d3ef8b81f1bf762022906e3f3d7eccdb2b2a1fc36","source":{"kind":"arxiv","id":"2410.02875","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.02875","created_at":"2026-07-05T09:35:52Z"},{"alias_kind":"arxiv_version","alias_value":"2410.02875v2","created_at":"2026-07-05T09:35:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.02875","created_at":"2026-07-05T09:35:52Z"},{"alias_kind":"pith_short_12","alias_value":"K6OZY65MYEEP","created_at":"2026-07-05T09:35:52Z"},{"alias_kind":"pith_short_16","alias_value":"K6OZY65MYEEPTC7W","created_at":"2026-07-05T09:35:52Z"},{"alias_kind":"pith_short_8","alias_value":"K6OZY65M","created_at":"2026-07-05T09:35:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:K6OZY65MYEEPTC7WNB6T56FYD4","target":"record","payload":{"canonical_record":{"source":{"id":"2410.02875","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-10-03T18:03:27Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"8ba6e3476e8bd8839935e385d57c4ee47dc2f5d1753633e9e7510da3a2454696","abstract_canon_sha256":"59578d5a4857cb1f04a7e82d0b85ad1c2a9b52ca3026d73993ff132d6c5a18bc"},"schema_version":"1.0"},"canonical_sha256":"579d9c7bacc108f98bf6687d3ef8b81f1bf762022906e3f3d7eccdb2b2a1fc36","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:35:52.736700Z","signature_b64":"fJ4seGj4XQdISFu22mZiirY3+4dehwi0pRPV10XV7x6wAzzUPcBGG7nvhZIeERZP04ex76YGYbyUpJzGeCnZDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"579d9c7bacc108f98bf6687d3ef8b81f1bf762022906e3f3d7eccdb2b2a1fc36","last_reissued_at":"2026-07-05T09:35:52.736095Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:35:52.736095Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2410.02875","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T09:35:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ocQrW8/HXmMXj5rQnJFE2bTUG1KKC9T9vp1DbjgDKfcFEkk4sGlMr4pr/JIYQWuaei21fUWxuvi2blvs+KMqBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T03:49:38.954219Z"},"content_sha256":"e6111fe036dbdac06ea923badc018fea75c0c9f0752c5f5de5df5d8dad3f724f","schema_version":"1.0","event_id":"sha256:e6111fe036dbdac06ea923badc018fea75c0c9f0752c5f5de5df5d8dad3f724f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:K6OZY65MYEEPTC7WNB6T56FYD4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Black hole spin evolution across cosmic time from the NewHorizon simulation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Chi An Dong-Paez, Christophe Peirani, Garreth Martin, Joanna M Piotrowska, Julien Devriendt, Katharina Kraljic, Marta Volonteri, Ricarda S. Beckmann, Sebastien Periani, Sukyoung K Yi, Yohan Dubois","submitted_at":"2024-10-03T18:03:27Z","abstract_excerpt":"Astrophysical black holes (BHs) have two fundamental properties: mass and spin. While the mass-evolution of BHs has been extensively studied, much less work has been done on predicting the distribution of BH spins. In this paper we present the spin evolution for a sample of intermediate-mass and massive BHs from the newHorizon simulation, which evolved BH spin across cosmic time in a full cosmological context through gas accretion, BH-BH mergers and BH feedback including jet spindown. As BHs grow, their spin evolution alternates between being dominated by gas accretion and BH mergers. Massive "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.02875","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2410.02875/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":"2026-07-05T09:35:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DIPXtz/mo2DSaVZuvbW4bnStczv6NLRyztg8wkawcxmJ8+2AR3WpGRHiWEBMzMPdkVinlB+wjCUViBSUzLFUBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T03:49:38.954748Z"},"content_sha256":"2052f1bf1a2080af5afef27f930f5950c3109c316769ed19966a2def40264daf","schema_version":"1.0","event_id":"sha256:2052f1bf1a2080af5afef27f930f5950c3109c316769ed19966a2def40264daf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K6OZY65MYEEPTC7WNB6T56FYD4/bundle.json","state_url":"https://pith.science/pith/K6OZY65MYEEPTC7WNB6T56FYD4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K6OZY65MYEEPTC7WNB6T56FYD4/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":"2026-08-12T03:49:38Z","links":{"resolver":"https://pith.science/pith/K6OZY65MYEEPTC7WNB6T56FYD4","bundle":"https://pith.science/pith/K6OZY65MYEEPTC7WNB6T56FYD4/bundle.json","state":"https://pith.science/pith/K6OZY65MYEEPTC7WNB6T56FYD4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K6OZY65MYEEPTC7WNB6T56FYD4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:K6OZY65MYEEPTC7WNB6T56FYD4","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":"59578d5a4857cb1f04a7e82d0b85ad1c2a9b52ca3026d73993ff132d6c5a18bc","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-10-03T18:03:27Z","title_canon_sha256":"8ba6e3476e8bd8839935e385d57c4ee47dc2f5d1753633e9e7510da3a2454696"},"schema_version":"1.0","source":{"id":"2410.02875","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.02875","created_at":"2026-07-05T09:35:52Z"},{"alias_kind":"arxiv_version","alias_value":"2410.02875v2","created_at":"2026-07-05T09:35:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.02875","created_at":"2026-07-05T09:35:52Z"},{"alias_kind":"pith_short_12","alias_value":"K6OZY65MYEEP","created_at":"2026-07-05T09:35:52Z"},{"alias_kind":"pith_short_16","alias_value":"K6OZY65MYEEPTC7W","created_at":"2026-07-05T09:35:52Z"},{"alias_kind":"pith_short_8","alias_value":"K6OZY65M","created_at":"2026-07-05T09:35:52Z"}],"graph_snapshots":[{"event_id":"sha256:2052f1bf1a2080af5afef27f930f5950c3109c316769ed19966a2def40264daf","target":"graph","created_at":"2026-07-05T09:35:52Z","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/2410.02875/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Astrophysical black holes (BHs) have two fundamental properties: mass and spin. While the mass-evolution of BHs has been extensively studied, much less work has been done on predicting the distribution of BH spins. In this paper we present the spin evolution for a sample of intermediate-mass and massive BHs from the newHorizon simulation, which evolved BH spin across cosmic time in a full cosmological context through gas accretion, BH-BH mergers and BH feedback including jet spindown. As BHs grow, their spin evolution alternates between being dominated by gas accretion and BH mergers. Massive ","authors_text":"Chi An Dong-Paez, Christophe Peirani, Garreth Martin, Joanna M Piotrowska, Julien Devriendt, Katharina Kraljic, Marta Volonteri, Ricarda S. Beckmann, Sebastien Periani, Sukyoung K Yi, Yohan Dubois","cross_cats":["astro-ph.GA"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-10-03T18:03:27Z","title":"Black hole spin evolution across cosmic time from the NewHorizon simulation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.02875","kind":"arxiv","version":2},"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:e6111fe036dbdac06ea923badc018fea75c0c9f0752c5f5de5df5d8dad3f724f","target":"record","created_at":"2026-07-05T09:35:52Z","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":"59578d5a4857cb1f04a7e82d0b85ad1c2a9b52ca3026d73993ff132d6c5a18bc","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-10-03T18:03:27Z","title_canon_sha256":"8ba6e3476e8bd8839935e385d57c4ee47dc2f5d1753633e9e7510da3a2454696"},"schema_version":"1.0","source":{"id":"2410.02875","kind":"arxiv","version":2}},"canonical_sha256":"579d9c7bacc108f98bf6687d3ef8b81f1bf762022906e3f3d7eccdb2b2a1fc36","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"579d9c7bacc108f98bf6687d3ef8b81f1bf762022906e3f3d7eccdb2b2a1fc36","first_computed_at":"2026-07-05T09:35:52.736095Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:35:52.736095Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fJ4seGj4XQdISFu22mZiirY3+4dehwi0pRPV10XV7x6wAzzUPcBGG7nvhZIeERZP04ex76YGYbyUpJzGeCnZDg==","signature_status":"signed_v1","signed_at":"2026-07-05T09:35:52.736700Z","signed_message":"canonical_sha256_bytes"},"source_id":"2410.02875","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e6111fe036dbdac06ea923badc018fea75c0c9f0752c5f5de5df5d8dad3f724f","sha256:2052f1bf1a2080af5afef27f930f5950c3109c316769ed19966a2def40264daf"],"state_sha256":"c2e7800b15918fce93318e6d4d0e957fe87650b4721b0a8de0ad2544164d7795"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MlckFsZNZBKRXsMkgdAyTehhGy8ILjDc6e98NXa7ojwyx0O9woI1KzrhChCUBLohuiyADeZSPvSPkV2GWX0+BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T03:49:38.959127Z","bundle_sha256":"433a359e56a929cef8a6ae2fb98fe70d62de735aff98c02e7066d80559ef9691"}}