{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:37LMB3GYWOCIUC5M6L445MBGHD","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":"916d9ad2b8d118d24d75ad5c31c320a5bb3157d52beb89f2ac6237557e2acc48","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-12-13T19:00:00Z","title_canon_sha256":"7b07d5f8046457afe4a5c24a290976fd3ec5b2408c60305ed580336f413a6103"},"schema_version":"1.0","source":{"id":"2212.06845","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.06845","created_at":"2026-07-05T07:00:58Z"},{"alias_kind":"arxiv_version","alias_value":"2212.06845v2","created_at":"2026-07-05T07:00:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.06845","created_at":"2026-07-05T07:00:58Z"},{"alias_kind":"pith_short_12","alias_value":"37LMB3GYWOCI","created_at":"2026-07-05T07:00:58Z"},{"alias_kind":"pith_short_16","alias_value":"37LMB3GYWOCIUC5M","created_at":"2026-07-05T07:00:58Z"},{"alias_kind":"pith_short_8","alias_value":"37LMB3GY","created_at":"2026-07-05T07:00:58Z"}],"graph_snapshots":[{"event_id":"sha256:0a19637abc272cdc5ca09aeba12a17f823584a102d81731ce750694ad7544786","target":"graph","created_at":"2026-07-05T07:00:58Z","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/2212.06845/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Nuclear star clusters, which fragment into metal-poor stars in situ at the centers of protogalaxies, provide ideal environments for the formation of intermediate-mass black holes with masses $10^3-10^6M_\\odot$. We utilize the semianalytic model implemented in Rapster, a public rapid cluster evolution code. We implement simple recipes for stellar collisions and gas accretion/expulsion into the code and identify the regimes where each channel contributes to the dynamical formation of intermediate-mass black holes via repeated mergers of stellar black hole seeds. We find that intermediate-mass bl","authors_text":"Emanuele Berti, Joseph Silk, Konstantinos Kritos","cross_cats":["astro-ph.CO","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-12-13T19:00:00Z","title":"Massive black hole assembly in nuclear star clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.06845","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:f895a2f5c3fae17b61282018c2309cec8199df658f461820451d7d76efc01cc4","target":"record","created_at":"2026-07-05T07:00:58Z","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":"916d9ad2b8d118d24d75ad5c31c320a5bb3157d52beb89f2ac6237557e2acc48","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-12-13T19:00:00Z","title_canon_sha256":"7b07d5f8046457afe4a5c24a290976fd3ec5b2408c60305ed580336f413a6103"},"schema_version":"1.0","source":{"id":"2212.06845","kind":"arxiv","version":2}},"canonical_sha256":"dfd6c0ecd8b3848a0bacf2f9ceb02638f000e0e7ed98c65fb6b991342ff16e4e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dfd6c0ecd8b3848a0bacf2f9ceb02638f000e0e7ed98c65fb6b991342ff16e4e","first_computed_at":"2026-07-05T07:00:58.092672Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:00:58.092672Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rNsaAsK25LhH63ZBLUgXR6qXcmwXFu+/a8RaI/ZSVjFSOfxLuO1gh3UH4WIx6wTz/DWWpHGSl7AXRnk1sv7sAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:00:58.093115Z","signed_message":"canonical_sha256_bytes"},"source_id":"2212.06845","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f895a2f5c3fae17b61282018c2309cec8199df658f461820451d7d76efc01cc4","sha256:0a19637abc272cdc5ca09aeba12a17f823584a102d81731ce750694ad7544786"],"state_sha256":"8b556000bfcdd7b23580ad267b5a05193d06c9c33dc087838f6392efe3a9e663"}