{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:BC26HHZSK5TWPKRNEDTOJDXRJA","short_pith_number":"pith:BC26HHZS","canonical_record":{"source":{"id":"0910.1587","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-08T20:19:03Z","cross_cats_sorted":["astro-ph.GA","gr-qc"],"title_canon_sha256":"216f726993c4dd6eabbf1a863803243cea7ec86fc1c55ef022f68f6a9a7bc40c","abstract_canon_sha256":"c7aef729dcb8a353fcbdca4b52178996dcaf3a5f4cd00319f392ec319d5695fb"},"schema_version":"1.0"},"canonical_sha256":"08b5e39f32576767aa2d20e6e48ef1481dbc22312c362bf5c9f755b5b1c05ead","source":{"kind":"arxiv","id":"0910.1587","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.1587","created_at":"2026-05-18T02:11:25Z"},{"alias_kind":"arxiv_version","alias_value":"0910.1587v2","created_at":"2026-05-18T02:11:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.1587","created_at":"2026-05-18T02:11:25Z"},{"alias_kind":"pith_short_12","alias_value":"BC26HHZSK5TW","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"BC26HHZSK5TWPKRN","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"BC26HHZS","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:BC26HHZSK5TWPKRNEDTOJDXRJA","target":"record","payload":{"canonical_record":{"source":{"id":"0910.1587","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-08T20:19:03Z","cross_cats_sorted":["astro-ph.GA","gr-qc"],"title_canon_sha256":"216f726993c4dd6eabbf1a863803243cea7ec86fc1c55ef022f68f6a9a7bc40c","abstract_canon_sha256":"c7aef729dcb8a353fcbdca4b52178996dcaf3a5f4cd00319f392ec319d5695fb"},"schema_version":"1.0"},"canonical_sha256":"08b5e39f32576767aa2d20e6e48ef1481dbc22312c362bf5c9f755b5b1c05ead","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:25.415489Z","signature_b64":"uDXlpmDD9as7BM7aUsGIN1v2uvYhdHfu/ujZA1lePivv1CGmLcrshsAgCy6km6e1BtuD/i2N45VZJb2H0rXoCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"08b5e39f32576767aa2d20e6e48ef1481dbc22312c362bf5c9f755b5b1c05ead","last_reissued_at":"2026-05-18T02:11:25.414838Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:25.414838Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.1587","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":"2026-05-18T02:11:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VnFebOSV0StWD1KLFK+pR5o4T8c4GBjXwIKYDo7oSWYNi5lMnviIatzo4KEQMOVIOez5xtGpYeAKsd4U6UTJDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:18:29.525526Z"},"content_sha256":"0e8d099bfc10a43d7b34e4fdd532d6a463c474fe85da69ed9a819852bd5416b2","schema_version":"1.0","event_id":"sha256:0e8d099bfc10a43d7b34e4fdd532d6a463c474fe85da69ed9a819852bd5416b2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:BC26HHZSK5TWPKRNEDTOJDXRJA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Triplets of supermassive black holes: Astrophysics, Gravitational Waves and Detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Alberto Sesana, Christoph Eichhorn, Junichiro Makino, Loren Hoffman, Matthew Benacquista, Pau Amaro-Seoane, Rainer Spurzem","submitted_at":"2009-10-08T20:19:03Z","abstract_excerpt":"Supermassive black holes (SMBHs) found in the centers of many galaxies have been recognized to play a fundamental active role in the cosmological structure formation process. In hierarchical formation scenarios, SMBHs are expected to form binaries following the merger of their host galaxies. If these binaries do not coalesce before the merger with a third galaxy, the formation of a black hole triple system is possible. Numerical simulations of the dynamics of triples within galaxy cores exhibit phases of very high eccentricity (as high as $e \\sim 0.99$). During these phases, intense bursts of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.1587","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":"2026-05-18T02:11:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ui61uM6w8L3xAO62lB+qeyxUNzQpXyoJO8ZZ2LbOO/KVLWHFacKD7o4BHmJsVeJPjb2PqVHfvBHvJ6FBgh8NDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:18:29.526214Z"},"content_sha256":"4ced9d20698722a134c4d45da33580105c4a1ea04bcb293a0f6fa6adaedd5b16","schema_version":"1.0","event_id":"sha256:4ced9d20698722a134c4d45da33580105c4a1ea04bcb293a0f6fa6adaedd5b16"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BC26HHZSK5TWPKRNEDTOJDXRJA/bundle.json","state_url":"https://pith.science/pith/BC26HHZSK5TWPKRNEDTOJDXRJA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BC26HHZSK5TWPKRNEDTOJDXRJA/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":"2026-05-28T21:18:29Z","links":{"resolver":"https://pith.science/pith/BC26HHZSK5TWPKRNEDTOJDXRJA","bundle":"https://pith.science/pith/BC26HHZSK5TWPKRNEDTOJDXRJA/bundle.json","state":"https://pith.science/pith/BC26HHZSK5TWPKRNEDTOJDXRJA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BC26HHZSK5TWPKRNEDTOJDXRJA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:BC26HHZSK5TWPKRNEDTOJDXRJA","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":"c7aef729dcb8a353fcbdca4b52178996dcaf3a5f4cd00319f392ec319d5695fb","cross_cats_sorted":["astro-ph.GA","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-08T20:19:03Z","title_canon_sha256":"216f726993c4dd6eabbf1a863803243cea7ec86fc1c55ef022f68f6a9a7bc40c"},"schema_version":"1.0","source":{"id":"0910.1587","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.1587","created_at":"2026-05-18T02:11:25Z"},{"alias_kind":"arxiv_version","alias_value":"0910.1587v2","created_at":"2026-05-18T02:11:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.1587","created_at":"2026-05-18T02:11:25Z"},{"alias_kind":"pith_short_12","alias_value":"BC26HHZSK5TW","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"BC26HHZSK5TWPKRN","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"BC26HHZS","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:4ced9d20698722a134c4d45da33580105c4a1ea04bcb293a0f6fa6adaedd5b16","target":"graph","created_at":"2026-05-18T02:11:25Z","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":"Supermassive black holes (SMBHs) found in the centers of many galaxies have been recognized to play a fundamental active role in the cosmological structure formation process. In hierarchical formation scenarios, SMBHs are expected to form binaries following the merger of their host galaxies. If these binaries do not coalesce before the merger with a third galaxy, the formation of a black hole triple system is possible. Numerical simulations of the dynamics of triples within galaxy cores exhibit phases of very high eccentricity (as high as $e \\sim 0.99$). During these phases, intense bursts of ","authors_text":"Alberto Sesana, Christoph Eichhorn, Junichiro Makino, Loren Hoffman, Matthew Benacquista, Pau Amaro-Seoane, Rainer Spurzem","cross_cats":["astro-ph.GA","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-08T20:19:03Z","title":"Triplets of supermassive black holes: Astrophysics, Gravitational Waves and Detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.1587","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":"sha256:0e8d099bfc10a43d7b34e4fdd532d6a463c474fe85da69ed9a819852bd5416b2","target":"record","created_at":"2026-05-18T02:11:25Z","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":"c7aef729dcb8a353fcbdca4b52178996dcaf3a5f4cd00319f392ec319d5695fb","cross_cats_sorted":["astro-ph.GA","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-08T20:19:03Z","title_canon_sha256":"216f726993c4dd6eabbf1a863803243cea7ec86fc1c55ef022f68f6a9a7bc40c"},"schema_version":"1.0","source":{"id":"0910.1587","kind":"arxiv","version":2}},"canonical_sha256":"08b5e39f32576767aa2d20e6e48ef1481dbc22312c362bf5c9f755b5b1c05ead","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"08b5e39f32576767aa2d20e6e48ef1481dbc22312c362bf5c9f755b5b1c05ead","first_computed_at":"2026-05-18T02:11:25.414838Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:11:25.414838Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uDXlpmDD9as7BM7aUsGIN1v2uvYhdHfu/ujZA1lePivv1CGmLcrshsAgCy6km6e1BtuD/i2N45VZJb2H0rXoCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:11:25.415489Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.1587","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e8d099bfc10a43d7b34e4fdd532d6a463c474fe85da69ed9a819852bd5416b2","sha256:4ced9d20698722a134c4d45da33580105c4a1ea04bcb293a0f6fa6adaedd5b16"],"state_sha256":"482c0b1451f5d594147ecc650bcaa7cd489a14a7f9041fa7d0081a3db19373fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"olG0j1EMdVvoyanG+uLKUlU7abiODxJdkRUHrMTuVlimv+Upj9rQVsKECZrgf4VMvTpjsib0K0+FBF+oCz/vAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T21:18:29.530236Z","bundle_sha256":"b0ac3e535855e095442f4926cf7bbcb19f74fb6529cc8cde451ce0247f7acba1"}}