{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:XSHI5VKONKNA2GX5D55YHHROX5","short_pith_number":"pith:XSHI5VKO","canonical_record":{"source":{"id":"1209.2114","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-10T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"e099c4127ee4bb7b77227302eb3f2f90ecaab467ce0307c222d67533c2a82b49","abstract_canon_sha256":"3fdeac4ab98e779af1350699a713ec8e1c7fedc2c405b2eeccd3e1af00fdf58b"},"schema_version":"1.0"},"canonical_sha256":"bc8e8ed54e6a9a0d1afd1f7b839e2ebf50f0c856985da60226cbec3a793b46fb","source":{"kind":"arxiv","id":"1209.2114","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.2114","created_at":"2026-05-18T03:45:52Z"},{"alias_kind":"arxiv_version","alias_value":"1209.2114v1","created_at":"2026-05-18T03:45:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.2114","created_at":"2026-05-18T03:45:52Z"},{"alias_kind":"pith_short_12","alias_value":"XSHI5VKONKNA","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"XSHI5VKONKNA2GX5","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"XSHI5VKO","created_at":"2026-05-18T12:27:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:XSHI5VKONKNA2GX5D55YHHROX5","target":"record","payload":{"canonical_record":{"source":{"id":"1209.2114","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-10T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"e099c4127ee4bb7b77227302eb3f2f90ecaab467ce0307c222d67533c2a82b49","abstract_canon_sha256":"3fdeac4ab98e779af1350699a713ec8e1c7fedc2c405b2eeccd3e1af00fdf58b"},"schema_version":"1.0"},"canonical_sha256":"bc8e8ed54e6a9a0d1afd1f7b839e2ebf50f0c856985da60226cbec3a793b46fb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:45:52.748791Z","signature_b64":"aUcv+F3+jSMvGHDii6oR7fgC6QhqYVPA7h6et8TSO6d4emcJOpR7x3SOiv8eyeSB9cdFkH7wK4BF0aCrIfViCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bc8e8ed54e6a9a0d1afd1f7b839e2ebf50f0c856985da60226cbec3a793b46fb","last_reissued_at":"2026-05-18T03:45:52.748144Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:45:52.748144Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.2114","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":"2026-05-18T03:45:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aKde29IeIram+egkxc0EY1o/iRon2n37qe/43b39d7+57C185Ph4B6hIq82a4VbCEM4RfBk0bf9QPOCpv73FDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T16:14:37.736674Z"},"content_sha256":"a0f32ce4bf1ee115ed918ad47ad3bc22bc2fb4b259e8815cc7b5c740dd3203ea","schema_version":"1.0","event_id":"sha256:a0f32ce4bf1ee115ed918ad47ad3bc22bc2fb4b259e8815cc7b5c740dd3203ea"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:XSHI5VKONKNA2GX5D55YHHROX5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Catch me if you can: is there a runaway-mass black hole in the Orion Nebula Cluster?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Holger Baumgardt (Queensland), Ladislav Subr (Prague), Pavel Kroupa (Bonn)","submitted_at":"2012-09-10T20:00:00Z","abstract_excerpt":"We investigate the dynamical evolution of the Orion Nebula Cluster (ONC) by means of direct N-body integrations. A large fraction of residual gas was probably expelled when the ONC formed, so we assume that the ONC was much more compact when it formed compared to its current size, in agreement with the embedded cluster radius-mass relation from Marks & Kroupa (2012). Hence, we assume that few-body relaxation played an important role during the initial phase of evolution of the ONC. In particular, three body interactions among OB stars likely led to their ejection from the cluster and, at the s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.2114","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":""},"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":"2026-05-18T03:45:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JVuYxFjRc7LcBLrUA67H+1iznoLS7QmTcZAbAxAVPirHninQOsFP7l8GttaXDpvE5QQvBGDYwBKyAm0F/zLgDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T16:14:37.737044Z"},"content_sha256":"0c6c49c48122f403f22eac79471970157007ca45f4c04f433ab63587b570a2c2","schema_version":"1.0","event_id":"sha256:0c6c49c48122f403f22eac79471970157007ca45f4c04f433ab63587b570a2c2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XSHI5VKONKNA2GX5D55YHHROX5/bundle.json","state_url":"https://pith.science/pith/XSHI5VKONKNA2GX5D55YHHROX5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XSHI5VKONKNA2GX5D55YHHROX5/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":"2026-06-27T16:14:37Z","links":{"resolver":"https://pith.science/pith/XSHI5VKONKNA2GX5D55YHHROX5","bundle":"https://pith.science/pith/XSHI5VKONKNA2GX5D55YHHROX5/bundle.json","state":"https://pith.science/pith/XSHI5VKONKNA2GX5D55YHHROX5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XSHI5VKONKNA2GX5D55YHHROX5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:XSHI5VKONKNA2GX5D55YHHROX5","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":"3fdeac4ab98e779af1350699a713ec8e1c7fedc2c405b2eeccd3e1af00fdf58b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-10T20:00:00Z","title_canon_sha256":"e099c4127ee4bb7b77227302eb3f2f90ecaab467ce0307c222d67533c2a82b49"},"schema_version":"1.0","source":{"id":"1209.2114","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.2114","created_at":"2026-05-18T03:45:52Z"},{"alias_kind":"arxiv_version","alias_value":"1209.2114v1","created_at":"2026-05-18T03:45:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.2114","created_at":"2026-05-18T03:45:52Z"},{"alias_kind":"pith_short_12","alias_value":"XSHI5VKONKNA","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"XSHI5VKONKNA2GX5","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"XSHI5VKO","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:0c6c49c48122f403f22eac79471970157007ca45f4c04f433ab63587b570a2c2","target":"graph","created_at":"2026-05-18T03:45:52Z","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"},"paper":{"abstract_excerpt":"We investigate the dynamical evolution of the Orion Nebula Cluster (ONC) by means of direct N-body integrations. A large fraction of residual gas was probably expelled when the ONC formed, so we assume that the ONC was much more compact when it formed compared to its current size, in agreement with the embedded cluster radius-mass relation from Marks & Kroupa (2012). Hence, we assume that few-body relaxation played an important role during the initial phase of evolution of the ONC. In particular, three body interactions among OB stars likely led to their ejection from the cluster and, at the s","authors_text":"Holger Baumgardt (Queensland), Ladislav Subr (Prague), Pavel Kroupa (Bonn)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-10T20:00:00Z","title":"Catch me if you can: is there a runaway-mass black hole in the Orion Nebula Cluster?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.2114","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:a0f32ce4bf1ee115ed918ad47ad3bc22bc2fb4b259e8815cc7b5c740dd3203ea","target":"record","created_at":"2026-05-18T03:45:52Z","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":"3fdeac4ab98e779af1350699a713ec8e1c7fedc2c405b2eeccd3e1af00fdf58b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-09-10T20:00:00Z","title_canon_sha256":"e099c4127ee4bb7b77227302eb3f2f90ecaab467ce0307c222d67533c2a82b49"},"schema_version":"1.0","source":{"id":"1209.2114","kind":"arxiv","version":1}},"canonical_sha256":"bc8e8ed54e6a9a0d1afd1f7b839e2ebf50f0c856985da60226cbec3a793b46fb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bc8e8ed54e6a9a0d1afd1f7b839e2ebf50f0c856985da60226cbec3a793b46fb","first_computed_at":"2026-05-18T03:45:52.748144Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:45:52.748144Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aUcv+F3+jSMvGHDii6oR7fgC6QhqYVPA7h6et8TSO6d4emcJOpR7x3SOiv8eyeSB9cdFkH7wK4BF0aCrIfViCw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:45:52.748791Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.2114","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0f32ce4bf1ee115ed918ad47ad3bc22bc2fb4b259e8815cc7b5c740dd3203ea","sha256:0c6c49c48122f403f22eac79471970157007ca45f4c04f433ab63587b570a2c2"],"state_sha256":"eff07b5d4d031ab7ca0be5dd49855223a1069c0557711443512304a233c27093"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lqAkmb6RTIczPe7icb0DYBCPtE3bkoJ9F1mXY9cXvk4neBOSAwG6/vLQcYeTwzqII87oRBY1ALX0bDnXUXnDCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T16:14:37.739052Z","bundle_sha256":"442f3a52e0d5b9ee653d9f38d6631681a4d1e3b8a2a7bec28b84ec126d9364f2"}}