{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:2UR6SDFN6D6KO43OJ32SAPUA4U","short_pith_number":"pith:2UR6SDFN","canonical_record":{"source":{"id":"1001.5451","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-01-29T18:41:29Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"fb0e24deebabc1949aecb4c6b6f1b9101fdaaddd72937f3fc5016bf61fa9dea6","abstract_canon_sha256":"4ead2ef8cc0eeed8e853ee8a8ef901bf721b9f0326e55e1174a80304ca15a0a5"},"schema_version":"1.0"},"canonical_sha256":"d523e90cadf0fca7736e4ef5203e80e51d2c4f1d72cd38fcfad64c0e1329c36a","source":{"kind":"arxiv","id":"1001.5451","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.5451","created_at":"2026-05-18T02:09:22Z"},{"alias_kind":"arxiv_version","alias_value":"1001.5451v2","created_at":"2026-05-18T02:09:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.5451","created_at":"2026-05-18T02:09:22Z"},{"alias_kind":"pith_short_12","alias_value":"2UR6SDFN6D6K","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"2UR6SDFN6D6KO43O","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"2UR6SDFN","created_at":"2026-05-18T12:26:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:2UR6SDFN6D6KO43OJ32SAPUA4U","target":"record","payload":{"canonical_record":{"source":{"id":"1001.5451","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-01-29T18:41:29Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"fb0e24deebabc1949aecb4c6b6f1b9101fdaaddd72937f3fc5016bf61fa9dea6","abstract_canon_sha256":"4ead2ef8cc0eeed8e853ee8a8ef901bf721b9f0326e55e1174a80304ca15a0a5"},"schema_version":"1.0"},"canonical_sha256":"d523e90cadf0fca7736e4ef5203e80e51d2c4f1d72cd38fcfad64c0e1329c36a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:09:22.025414Z","signature_b64":"Fp8IZFjw+1c+skLMMXlEWRGkE8d7zYX+p5vlIIG8CnktlOZAGE6AnZI193pEYU7G+mvHPYLhhYQ8zwuh5zfGCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d523e90cadf0fca7736e4ef5203e80e51d2c4f1d72cd38fcfad64c0e1329c36a","last_reissued_at":"2026-05-18T02:09:22.024717Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:09:22.024717Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.5451","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":"2026-05-18T02:09:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mKuYxyJC3SzPh2FbYZxm08vEs+tOqsCj4YT02phzvYmcqDvTkxxdchUd4VnDyr6Qp5+mN+b9aAkhvyKlYRjpCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T13:36:49.510901Z"},"content_sha256":"2bd07bb09d7db421734903f1fc9137a3c43d6d33917e574435bff64665624b5e","schema_version":"1.0","event_id":"sha256:2bd07bb09d7db421734903f1fc9137a3c43d6d33917e574435bff64665624b5e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:2UR6SDFN6D6KO43OJ32SAPUA4U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Massive black holes lurking in Milky Way satellites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.CO","authors_text":"J.R. Gair, M.G. Walker, M. Volonteri, S. Van Wassenhove","submitted_at":"2010-01-29T18:41:29Z","abstract_excerpt":"As massive black holes (MBHs) grow from lower-mass seeds, it is natural to expect that a leftover population of progenitor MBHs should also exist in the present universe. Dwarf galaxies undergo a quiet merger history, and as a result, we expect that dwarfs observed in the local Universe retain some `memory' of the original seed mass distribution. Consequently, the properties of MBHs in nearby dwarf galaxies may provide clean indicators of the efficiency of MBH formation. In order to examine the properties of MBHs in dwarf galaxies, we evolve different MBH populations within a Milky Way halo fr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.5451","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:09:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e2kPsJQxueD36XmY7hGN2MChdmA98WQClhLSGffsYeiBJPi/obZ5QVgxGFK4FiVLit4s5wN5Ns5Q4G8TP6x+Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T13:36:49.511413Z"},"content_sha256":"60af4e166743d214d6262a1cf13e39680859ff5a01459bdb0e0c8d31ae3172d8","schema_version":"1.0","event_id":"sha256:60af4e166743d214d6262a1cf13e39680859ff5a01459bdb0e0c8d31ae3172d8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2UR6SDFN6D6KO43OJ32SAPUA4U/bundle.json","state_url":"https://pith.science/pith/2UR6SDFN6D6KO43OJ32SAPUA4U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2UR6SDFN6D6KO43OJ32SAPUA4U/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":"2026-05-31T13:36:49Z","links":{"resolver":"https://pith.science/pith/2UR6SDFN6D6KO43OJ32SAPUA4U","bundle":"https://pith.science/pith/2UR6SDFN6D6KO43OJ32SAPUA4U/bundle.json","state":"https://pith.science/pith/2UR6SDFN6D6KO43OJ32SAPUA4U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2UR6SDFN6D6KO43OJ32SAPUA4U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:2UR6SDFN6D6KO43OJ32SAPUA4U","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":"4ead2ef8cc0eeed8e853ee8a8ef901bf721b9f0326e55e1174a80304ca15a0a5","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-01-29T18:41:29Z","title_canon_sha256":"fb0e24deebabc1949aecb4c6b6f1b9101fdaaddd72937f3fc5016bf61fa9dea6"},"schema_version":"1.0","source":{"id":"1001.5451","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.5451","created_at":"2026-05-18T02:09:22Z"},{"alias_kind":"arxiv_version","alias_value":"1001.5451v2","created_at":"2026-05-18T02:09:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.5451","created_at":"2026-05-18T02:09:22Z"},{"alias_kind":"pith_short_12","alias_value":"2UR6SDFN6D6K","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"2UR6SDFN6D6KO43O","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"2UR6SDFN","created_at":"2026-05-18T12:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:60af4e166743d214d6262a1cf13e39680859ff5a01459bdb0e0c8d31ae3172d8","target":"graph","created_at":"2026-05-18T02:09:22Z","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"},"paper":{"abstract_excerpt":"As massive black holes (MBHs) grow from lower-mass seeds, it is natural to expect that a leftover population of progenitor MBHs should also exist in the present universe. Dwarf galaxies undergo a quiet merger history, and as a result, we expect that dwarfs observed in the local Universe retain some `memory' of the original seed mass distribution. Consequently, the properties of MBHs in nearby dwarf galaxies may provide clean indicators of the efficiency of MBH formation. In order to examine the properties of MBHs in dwarf galaxies, we evolve different MBH populations within a Milky Way halo fr","authors_text":"J.R. Gair, M.G. Walker, M. Volonteri, S. Van Wassenhove","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-01-29T18:41:29Z","title":"Massive black holes lurking in Milky Way satellites"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.5451","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":"sha256:2bd07bb09d7db421734903f1fc9137a3c43d6d33917e574435bff64665624b5e","target":"record","created_at":"2026-05-18T02:09:22Z","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":"4ead2ef8cc0eeed8e853ee8a8ef901bf721b9f0326e55e1174a80304ca15a0a5","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-01-29T18:41:29Z","title_canon_sha256":"fb0e24deebabc1949aecb4c6b6f1b9101fdaaddd72937f3fc5016bf61fa9dea6"},"schema_version":"1.0","source":{"id":"1001.5451","kind":"arxiv","version":2}},"canonical_sha256":"d523e90cadf0fca7736e4ef5203e80e51d2c4f1d72cd38fcfad64c0e1329c36a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d523e90cadf0fca7736e4ef5203e80e51d2c4f1d72cd38fcfad64c0e1329c36a","first_computed_at":"2026-05-18T02:09:22.024717Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:09:22.024717Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Fp8IZFjw+1c+skLMMXlEWRGkE8d7zYX+p5vlIIG8CnktlOZAGE6AnZI193pEYU7G+mvHPYLhhYQ8zwuh5zfGCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:09:22.025414Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.5451","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2bd07bb09d7db421734903f1fc9137a3c43d6d33917e574435bff64665624b5e","sha256:60af4e166743d214d6262a1cf13e39680859ff5a01459bdb0e0c8d31ae3172d8"],"state_sha256":"b21c0698957c0a498a19d90e85720a184c673704a2c8bcc6b896f203763ca9f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eVJMQ+VH9R92OqVUCH3X9aeCgRMw0tRzg8Ndg7u8TgNksD9Cy5CplaBbO5MmcxsMxphwVkfEB5w8dv0TAXJHDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T13:36:49.514882Z","bundle_sha256":"061cfa56169e3e77f35e8bc8fa76487e0f8f3d75c75b8dfdc416d181ba811a65"}}