{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:F5EJRN3UIFCDGKZUBRWIREU3I7","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":"26b5ca70ab0b87176fc12bd4ddd230bc70a5943f7b456d262fa770a899bdec7d","cross_cats_sorted":["astro-ph.GA","gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-05-25T15:55:05Z","title_canon_sha256":"cc62e8874a6514b8bbb4118905af3819fe89cd78dede3a23831ae2e0472bcc0a"},"schema_version":"1.0","source":{"id":"2605.25980","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.25980","created_at":"2026-05-26T02:05:21Z"},{"alias_kind":"arxiv_version","alias_value":"2605.25980v1","created_at":"2026-05-26T02:05:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.25980","created_at":"2026-05-26T02:05:21Z"},{"alias_kind":"pith_short_12","alias_value":"F5EJRN3UIFCD","created_at":"2026-05-26T02:05:21Z"},{"alias_kind":"pith_short_16","alias_value":"F5EJRN3UIFCDGKZU","created_at":"2026-05-26T02:05:21Z"},{"alias_kind":"pith_short_8","alias_value":"F5EJRN3U","created_at":"2026-05-26T02:05:21Z"}],"graph_snapshots":[{"event_id":"sha256:9c1e8c0f0722dae877b8bab273a99317f11389961722a81dee34d94acc5befaa","target":"graph","created_at":"2026-05-26T02:05:21Z","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/2605.25980/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Analyses of the growing catalog of binary black hole (BBH) mergers observed by the LIGO-Virgo-KAGRA detectors are beginning to resolve features in their population-level mass, spin, and redshift distributions, revealing imprints of the astrophysical processes driving their formation and evolution. We present a novel method to search for subpopulations in the data using reversible-jump Markov chain Monte Carlo, providing interpretable results while making minimal prior assumptions. We find evidence for three subpopulations: a narrow subpopulation in primary mass at $\\sim 10~M_\\odot$ with prefer","authors_text":"Alexandre Toubiana, April Qiu Cheng, Jonathan Gair, Sylvia Biscoveanu","cross_cats":["astro-ph.GA","gr-qc"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-05-25T15:55:05Z","title":"Reversible-jump MCMC reveals binary black hole subpopulations with distinct redshift evolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.25980","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":"sha256:509af83549920f585ddb9964a06faacfcf9b56530112d0d4273a467c5ab0faf3","target":"record","created_at":"2026-05-26T02:05:21Z","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":"26b5ca70ab0b87176fc12bd4ddd230bc70a5943f7b456d262fa770a899bdec7d","cross_cats_sorted":["astro-ph.GA","gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-05-25T15:55:05Z","title_canon_sha256":"cc62e8874a6514b8bbb4118905af3819fe89cd78dede3a23831ae2e0472bcc0a"},"schema_version":"1.0","source":{"id":"2605.25980","kind":"arxiv","version":1}},"canonical_sha256":"2f4898b7744144332b340c6c88929b47c1e6f59df51fc027a348fe05454f9450","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2f4898b7744144332b340c6c88929b47c1e6f59df51fc027a348fe05454f9450","first_computed_at":"2026-05-26T02:05:21.709571Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-26T02:05:21.709571Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PijvqKSHnAqjmldgUglO1dB6DPS0lPE1zKJw74vol56g/gX7sCLRvOfCJDsdWL4OOYjb63tKIO53ZFs3d8YsDw==","signature_status":"signed_v1","signed_at":"2026-05-26T02:05:21.710289Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.25980","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:509af83549920f585ddb9964a06faacfcf9b56530112d0d4273a467c5ab0faf3","sha256:9c1e8c0f0722dae877b8bab273a99317f11389961722a81dee34d94acc5befaa"],"state_sha256":"b7ec485b40596f693441590af227d8cf13de1cae2b4186d7fd1fcc527543165d"}