{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:KDMNC2HS7HMLZSQJHYNURCJEU4","short_pith_number":"pith:KDMNC2HS","canonical_record":{"source":{"id":"2508.15574","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-08-21T13:45:56Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"dc4f293c18892672873edb4504da8c3beb472d2aa3c34f390affcc9e6943f497","abstract_canon_sha256":"820d5c7d19676589e7103feac129e44971212c2deed6f97403b1d56f63534790"},"schema_version":"1.0"},"canonical_sha256":"50d8d168f2f9d8bcca093e1b488924a7213e5fdfca3414ac680238bb8f6354af","source":{"kind":"arxiv","id":"2508.15574","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.15574","created_at":"2026-07-05T11:57:15Z"},{"alias_kind":"arxiv_version","alias_value":"2508.15574v1","created_at":"2026-07-05T11:57:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.15574","created_at":"2026-07-05T11:57:15Z"},{"alias_kind":"pith_short_12","alias_value":"KDMNC2HS7HML","created_at":"2026-07-05T11:57:15Z"},{"alias_kind":"pith_short_16","alias_value":"KDMNC2HS7HMLZSQJ","created_at":"2026-07-05T11:57:15Z"},{"alias_kind":"pith_short_8","alias_value":"KDMNC2HS","created_at":"2026-07-05T11:57:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:KDMNC2HS7HMLZSQJHYNURCJEU4","target":"record","payload":{"canonical_record":{"source":{"id":"2508.15574","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-08-21T13:45:56Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"dc4f293c18892672873edb4504da8c3beb472d2aa3c34f390affcc9e6943f497","abstract_canon_sha256":"820d5c7d19676589e7103feac129e44971212c2deed6f97403b1d56f63534790"},"schema_version":"1.0"},"canonical_sha256":"50d8d168f2f9d8bcca093e1b488924a7213e5fdfca3414ac680238bb8f6354af","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:57:15.049464Z","signature_b64":"f9YQFnkiaxS6WCPksGTppwiEBb25sqYH5W4huL5QwsZQgNfaW/7zL6GELKYKeUrln0WRWEt4zJaQnM2zy7xjCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"50d8d168f2f9d8bcca093e1b488924a7213e5fdfca3414ac680238bb8f6354af","last_reissued_at":"2026-07-05T11:57:15.049095Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:57:15.049095Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2508.15574","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":"2026-07-05T11:57:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L0ewFB3R2FMngqvyhk8dj6hXb5O1cbDCOXSqISekuy9ye4UXPNe0GyjiX+EDciL6eDyokwxsiyywKeTsoxKIAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T11:06:43.918575Z"},"content_sha256":"16b044e0de6b188801911fed949454c6390ac2f7a10eabe4ef9f6acdf0c48a35","schema_version":"1.0","event_id":"sha256:16b044e0de6b188801911fed949454c6390ac2f7a10eabe4ef9f6acdf0c48a35"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:KDMNC2HS7HMLZSQJHYNURCJEU4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Using gravitational wave dark sirens to choose between host galaxy weighting models","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Ik Siong Heng, Rachel Gray, Zhuotao Li","submitted_at":"2025-08-21T13:45:56Z","abstract_excerpt":"Binary black hole (BBH) mergers,, an important source of gravitational-waves(GWs), are assumed to be hosted in galaxies. The probability of a galaxy to host a BBH is related to its properties, for example stellar mass and star formation rate. These properties can be estimated from observables, such as the luminosity in certain observation bands. We refer to this description of host galaxy properties as host galaxy weighting models. However, the host galaxy weighting model for BBHs has yet to be accurately determined. Population synthesis has provided a variety of host galaxy weighting models. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.15574","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2508.15574/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T11:57:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zNnVlBRxbkAQo2CZquNup2KJmemOPteBDPJ+JB5Uyzn9M2Y4uLJOzDKwP6s6l9Fs9whmWMe3K5qWSkR88ijRAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T11:06:43.919180Z"},"content_sha256":"0d571c1ff2c89c34725493985955d2753a04d3b3f371ad97d42bc20e0bb3eec6","schema_version":"1.0","event_id":"sha256:0d571c1ff2c89c34725493985955d2753a04d3b3f371ad97d42bc20e0bb3eec6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KDMNC2HS7HMLZSQJHYNURCJEU4/bundle.json","state_url":"https://pith.science/pith/KDMNC2HS7HMLZSQJHYNURCJEU4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KDMNC2HS7HMLZSQJHYNURCJEU4/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":"2026-08-04T11:06:43Z","links":{"resolver":"https://pith.science/pith/KDMNC2HS7HMLZSQJHYNURCJEU4","bundle":"https://pith.science/pith/KDMNC2HS7HMLZSQJHYNURCJEU4/bundle.json","state":"https://pith.science/pith/KDMNC2HS7HMLZSQJHYNURCJEU4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KDMNC2HS7HMLZSQJHYNURCJEU4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:KDMNC2HS7HMLZSQJHYNURCJEU4","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":"820d5c7d19676589e7103feac129e44971212c2deed6f97403b1d56f63534790","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-08-21T13:45:56Z","title_canon_sha256":"dc4f293c18892672873edb4504da8c3beb472d2aa3c34f390affcc9e6943f497"},"schema_version":"1.0","source":{"id":"2508.15574","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.15574","created_at":"2026-07-05T11:57:15Z"},{"alias_kind":"arxiv_version","alias_value":"2508.15574v1","created_at":"2026-07-05T11:57:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.15574","created_at":"2026-07-05T11:57:15Z"},{"alias_kind":"pith_short_12","alias_value":"KDMNC2HS7HML","created_at":"2026-07-05T11:57:15Z"},{"alias_kind":"pith_short_16","alias_value":"KDMNC2HS7HMLZSQJ","created_at":"2026-07-05T11:57:15Z"},{"alias_kind":"pith_short_8","alias_value":"KDMNC2HS","created_at":"2026-07-05T11:57:15Z"}],"graph_snapshots":[{"event_id":"sha256:0d571c1ff2c89c34725493985955d2753a04d3b3f371ad97d42bc20e0bb3eec6","target":"graph","created_at":"2026-07-05T11:57:15Z","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/2508.15574/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Binary black hole (BBH) mergers,, an important source of gravitational-waves(GWs), are assumed to be hosted in galaxies. The probability of a galaxy to host a BBH is related to its properties, for example stellar mass and star formation rate. These properties can be estimated from observables, such as the luminosity in certain observation bands. We refer to this description of host galaxy properties as host galaxy weighting models. However, the host galaxy weighting model for BBHs has yet to be accurately determined. Population synthesis has provided a variety of host galaxy weighting models. ","authors_text":"Ik Siong Heng, Rachel Gray, Zhuotao Li","cross_cats":["gr-qc"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-08-21T13:45:56Z","title":"Using gravitational wave dark sirens to choose between host galaxy weighting models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.15574","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":"sha256:16b044e0de6b188801911fed949454c6390ac2f7a10eabe4ef9f6acdf0c48a35","target":"record","created_at":"2026-07-05T11:57:15Z","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":"820d5c7d19676589e7103feac129e44971212c2deed6f97403b1d56f63534790","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-08-21T13:45:56Z","title_canon_sha256":"dc4f293c18892672873edb4504da8c3beb472d2aa3c34f390affcc9e6943f497"},"schema_version":"1.0","source":{"id":"2508.15574","kind":"arxiv","version":1}},"canonical_sha256":"50d8d168f2f9d8bcca093e1b488924a7213e5fdfca3414ac680238bb8f6354af","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"50d8d168f2f9d8bcca093e1b488924a7213e5fdfca3414ac680238bb8f6354af","first_computed_at":"2026-07-05T11:57:15.049095Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:57:15.049095Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f9YQFnkiaxS6WCPksGTppwiEBb25sqYH5W4huL5QwsZQgNfaW/7zL6GELKYKeUrln0WRWEt4zJaQnM2zy7xjCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:57:15.049464Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.15574","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:16b044e0de6b188801911fed949454c6390ac2f7a10eabe4ef9f6acdf0c48a35","sha256:0d571c1ff2c89c34725493985955d2753a04d3b3f371ad97d42bc20e0bb3eec6"],"state_sha256":"b19d306c6f1028c2938495c481266ebcea2b987b2b2f2a349e5a2daf1692a9dd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6FibNeAOHprcCvoXRmcIyLYBMd2Ktf3UdX7ZZxMb2lWhGPkdcssXs4CZyBO5o6aQ1i9uAQoz7SJYwnrTys8XBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T11:06:43.922830Z","bundle_sha256":"d33119f2b7848ec2fa6b833b76bee301c7843669da47d7471d8a9dc5745f0bc5"}}