{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:77NA36PDSFL4BUCHDEFFP4KLMW","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":"06a21241012aaf1f00d6f2ef6a0a3f596a20906815721f456d0cbcb2db28f66a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-01T20:49:52Z","title_canon_sha256":"0aec9c7178451755b9666123bdcf81665dd965e69fa4e350f0b2cd655c1a8e4d"},"schema_version":"1.0","source":{"id":"1208.0358","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.0358","created_at":"2026-05-18T03:01:33Z"},{"alias_kind":"arxiv_version","alias_value":"1208.0358v2","created_at":"2026-05-18T03:01:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.0358","created_at":"2026-05-18T03:01:33Z"},{"alias_kind":"pith_short_12","alias_value":"77NA36PDSFL4","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"77NA36PDSFL4BUCH","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"77NA36PD","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:1901005121abe62bcd274a92abeae3d807566f6f61f9c1eeb16c79ad34f05864","target":"graph","created_at":"2026-05-18T03:01:33Z","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 compare the current LIGO/Virgo upper limits on double compact object volumetric merger rates with our theoretical predictions. Our optimistic models are a factor of 3 below the existing upper limits for massive BH-BH systems with total mass 50-70 Msun, suggesting that a small increase in observational sensitivity may bring the first detections. The LIGO/Virgo gravitational wave observatories are currently being upgraded to advanced design sensitivity. If a sizeable population of BH-BH binaries is detected, the maximum total binary mass of this population will discriminate between two genera","authors_text":"Chris L. Fryer, Daniel E. Holz, Krzysztof Belczynski, Michal Dominik, Serena Repetto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-01T20:49:52Z","title":"Comparison of LIGO/Virgo upper limits with predicted compact binary merger rates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.0358","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":"sha256:2aab302f2e2d728af2d1353fcf819c546d50a0b06dfa11ded5e495232ff5f84d","target":"record","created_at":"2026-05-18T03:01:33Z","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":"06a21241012aaf1f00d6f2ef6a0a3f596a20906815721f456d0cbcb2db28f66a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-01T20:49:52Z","title_canon_sha256":"0aec9c7178451755b9666123bdcf81665dd965e69fa4e350f0b2cd655c1a8e4d"},"schema_version":"1.0","source":{"id":"1208.0358","kind":"arxiv","version":2}},"canonical_sha256":"ffda0df9e39157c0d047190a57f14b65b38552d4a770e62088d4fdbcc7753fbd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ffda0df9e39157c0d047190a57f14b65b38552d4a770e62088d4fdbcc7753fbd","first_computed_at":"2026-05-18T03:01:33.529801Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:01:33.529801Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KkxV4Yceo8iQLkyHQhv8X69PQyzvCnA7imCq88Tv4+n5bzIc8GxgB3uUdSIDo+oCoPeU9ddI703/TRCmJMMFCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:01:33.530781Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.0358","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2aab302f2e2d728af2d1353fcf819c546d50a0b06dfa11ded5e495232ff5f84d","sha256:1901005121abe62bcd274a92abeae3d807566f6f61f9c1eeb16c79ad34f05864"],"state_sha256":"1b10cdb0bac3192b4ecba0843d245d88efb9b437bf7ea49ac1ee3fa2fd81d2a3"}