{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:AC46K3RPS4ZYTG7RUQYMEDOEKY","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":"3230b7478204a56d7ddb197912c9f5f0352a499c150365e397da89c26e1a1168","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-04-24T17:20:01Z","title_canon_sha256":"5484665467ca0667182c3c85c02ce595ab3ac156cd105cefb4f7d29260a14c1f"},"schema_version":"1.0","source":{"id":"2004.11866","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.11866","created_at":"2026-07-05T01:42:35Z"},{"alias_kind":"arxiv_version","alias_value":"2004.11866v3","created_at":"2026-07-05T01:42:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.11866","created_at":"2026-07-05T01:42:35Z"},{"alias_kind":"pith_short_12","alias_value":"AC46K3RPS4ZY","created_at":"2026-07-05T01:42:35Z"},{"alias_kind":"pith_short_16","alias_value":"AC46K3RPS4ZYTG7R","created_at":"2026-07-05T01:42:35Z"},{"alias_kind":"pith_short_8","alias_value":"AC46K3RP","created_at":"2026-07-05T01:42:35Z"}],"graph_snapshots":[{"event_id":"sha256:255781311e43ad62f875b27c60ee85e40fd59cc161a52583272bdea2733b6686","target":"graph","created_at":"2026-07-05T01:42:35Z","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/2004.11866/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The LIGO/Virgo collaboration has reported the detection of GW190412, a BH-BH merger with the most unequal masses to date: 24.4-34.7 Msun and 7.4-10.1 Msun (a mass ratio of q=0.21-0.41). Additionally, GW190412's effective spin was estimated to be Xeff=0.14-0.34, with the spin of the primary BH in the range a=0.17-0.59. Based on this and prior detections, about 10 percent of BH-BH mergers have q<0.4. Major BH-BH formation channels tend to produce BH-BH mergers with comparable masses (typically with q>0.5). Here we test whether the classical isolated binary evolution channel can produce mergers r","authors_text":"A. Olejak, D.E. Holz, J.-P. Lasota, K.Belczynski, M.C. Miller, M. Fishbach, T. Bulik","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-04-24T17:20:01Z","title":"The Origin of inequality: isolated formation of a 30+10Msun binary black-hole merger"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.11866","kind":"arxiv","version":3},"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":"sha256:6f354ab6c829b3554f41684400653337e6d743253a85687eed232aa366db2f16","target":"record","created_at":"2026-07-05T01:42:35Z","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":"3230b7478204a56d7ddb197912c9f5f0352a499c150365e397da89c26e1a1168","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-04-24T17:20:01Z","title_canon_sha256":"5484665467ca0667182c3c85c02ce595ab3ac156cd105cefb4f7d29260a14c1f"},"schema_version":"1.0","source":{"id":"2004.11866","kind":"arxiv","version":3}},"canonical_sha256":"00b9e56e2f9733899bf1a430c20dc45617afbf94f0172d978bbbd6fb3dc524ee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"00b9e56e2f9733899bf1a430c20dc45617afbf94f0172d978bbbd6fb3dc524ee","first_computed_at":"2026-07-05T01:42:35.950059Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:42:35.950059Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yyhOZuQYAf90g/SD/GyJ72zE9j4Rs/UxSirA0+yxitfwf87fEvHYbBh/86EGBY0nfokKQpcq0ZnHlouQT6VhBA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:42:35.950527Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.11866","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6f354ab6c829b3554f41684400653337e6d743253a85687eed232aa366db2f16","sha256:255781311e43ad62f875b27c60ee85e40fd59cc161a52583272bdea2733b6686"],"state_sha256":"e68199da26f4aaca1abbb392604584f4f8f0c8d32470c5b47d15ace2ccc7fc15"}