{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:WBQJKSJ5ISLI3PGC6MXULSC5ZB","short_pith_number":"pith:WBQJKSJ5","canonical_record":{"source":{"id":"1908.06050","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-16T16:30:53Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"62d52174dd129d95b46859b70c64407518b9712a598f395d58b96421ce0f259c","abstract_canon_sha256":"f7f95679e518245e420252473d1e6836e371005272c7e8cebd9502cfe57d4cbc"},"schema_version":"1.0"},"canonical_sha256":"b06095493d44968dbcc2f32f45c85dc8545db5beaa0752263b03581735c1ed0e","source":{"kind":"arxiv","id":"1908.06050","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.06050","created_at":"2026-07-05T01:09:38Z"},{"alias_kind":"arxiv_version","alias_value":"1908.06050v4","created_at":"2026-07-05T01:09:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.06050","created_at":"2026-07-05T01:09:38Z"},{"alias_kind":"pith_short_12","alias_value":"WBQJKSJ5ISLI","created_at":"2026-07-05T01:09:38Z"},{"alias_kind":"pith_short_16","alias_value":"WBQJKSJ5ISLI3PGC","created_at":"2026-07-05T01:09:38Z"},{"alias_kind":"pith_short_8","alias_value":"WBQJKSJ5","created_at":"2026-07-05T01:09:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:WBQJKSJ5ISLI3PGC6MXULSC5ZB","target":"record","payload":{"canonical_record":{"source":{"id":"1908.06050","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-16T16:30:53Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"62d52174dd129d95b46859b70c64407518b9712a598f395d58b96421ce0f259c","abstract_canon_sha256":"f7f95679e518245e420252473d1e6836e371005272c7e8cebd9502cfe57d4cbc"},"schema_version":"1.0"},"canonical_sha256":"b06095493d44968dbcc2f32f45c85dc8545db5beaa0752263b03581735c1ed0e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:09:38.937053Z","signature_b64":"uFezloX6jXQMU1HoGD+ciqYij6bMmUuhSiQ+A2tjGco0L77YzVssQ+DOdefBcld5BPRHqqswhcjhgYzwwmCiCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b06095493d44968dbcc2f32f45c85dc8545db5beaa0752263b03581735c1ed0e","last_reissued_at":"2026-07-05T01:09:38.936578Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:09:38.936578Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.06050","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:09:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dZfpamjm6lHuejB8uzN4l7+YOEAjFEBXK0wIoQfBraBxXJ2fzOr6Qdav3Qh/m5LsFUwgHW/S/IjfSQ/URZmYCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T16:13:15.827340Z"},"content_sha256":"58418c6e1975a37b8a97d800217b6c887026aed1ef96a6768733ca346d6551bb","schema_version":"1.0","event_id":"sha256:58418c6e1975a37b8a97d800217b6c887026aed1ef96a6768733ca346d6551bb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:WBQJKSJ5ISLI3PGC6MXULSC5ZB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmological Inference using Gravitational Wave Standard Sirens: A Mock Data Challenge","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.HE"],"primary_cat":"gr-qc","authors_text":"Ankan Sur, Archisman Ghosh, Christopher Messenger, Dani\\`ele A. Steer, Daniel E. Holz, Hong Qi, Hsin-Yu Chen, Ignacio Maga\\~na Hernandez, John Veitch, Jonathan R. Gair, Maya Fishbach, Patrick R. Brady, Rachel Gray, Simone Mastrogiovanni, Will M. Farr","submitted_at":"2019-08-16T16:30:53Z","abstract_excerpt":"The observation of binary neutron star merger GW170817, along with its optical counterpart, provided the first constraint on the Hubble constant $H_0$ using gravitational wave standard sirens. When no counterpart is identified, a galaxy catalog can be used to provide the necessary redshift information. However, the true host might not be contained in a catalog which is not complete out to the limit of gravitational-wave detectability. These electromagnetic and gravitational-wave selection effects must be accounted for. We describe and implement a method to estimate $H_0$ using both the counter"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.06050","kind":"arxiv","version":4},"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/1908.06050/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":"2026-07-05T01:09:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DlFvWknD3Wv1fRPxneOsFs/EaYjbiWRA81ku5O8PjkRm6JT0OmrWeixDp7L51Z2dDUErYDYqHytM/mLNJXMSDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T16:13:15.828259Z"},"content_sha256":"e15d36f293df80c32d91bf4663f5dd8e9a173945f6af2aca226d256e615e42b0","schema_version":"1.0","event_id":"sha256:e15d36f293df80c32d91bf4663f5dd8e9a173945f6af2aca226d256e615e42b0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WBQJKSJ5ISLI3PGC6MXULSC5ZB/bundle.json","state_url":"https://pith.science/pith/WBQJKSJ5ISLI3PGC6MXULSC5ZB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WBQJKSJ5ISLI3PGC6MXULSC5ZB/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":"2026-08-13T16:13:15Z","links":{"resolver":"https://pith.science/pith/WBQJKSJ5ISLI3PGC6MXULSC5ZB","bundle":"https://pith.science/pith/WBQJKSJ5ISLI3PGC6MXULSC5ZB/bundle.json","state":"https://pith.science/pith/WBQJKSJ5ISLI3PGC6MXULSC5ZB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WBQJKSJ5ISLI3PGC6MXULSC5ZB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:WBQJKSJ5ISLI3PGC6MXULSC5ZB","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":"f7f95679e518245e420252473d1e6836e371005272c7e8cebd9502cfe57d4cbc","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-16T16:30:53Z","title_canon_sha256":"62d52174dd129d95b46859b70c64407518b9712a598f395d58b96421ce0f259c"},"schema_version":"1.0","source":{"id":"1908.06050","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.06050","created_at":"2026-07-05T01:09:38Z"},{"alias_kind":"arxiv_version","alias_value":"1908.06050v4","created_at":"2026-07-05T01:09:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.06050","created_at":"2026-07-05T01:09:38Z"},{"alias_kind":"pith_short_12","alias_value":"WBQJKSJ5ISLI","created_at":"2026-07-05T01:09:38Z"},{"alias_kind":"pith_short_16","alias_value":"WBQJKSJ5ISLI3PGC","created_at":"2026-07-05T01:09:38Z"},{"alias_kind":"pith_short_8","alias_value":"WBQJKSJ5","created_at":"2026-07-05T01:09:38Z"}],"graph_snapshots":[{"event_id":"sha256:e15d36f293df80c32d91bf4663f5dd8e9a173945f6af2aca226d256e615e42b0","target":"graph","created_at":"2026-07-05T01:09:38Z","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/1908.06050/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The observation of binary neutron star merger GW170817, along with its optical counterpart, provided the first constraint on the Hubble constant $H_0$ using gravitational wave standard sirens. When no counterpart is identified, a galaxy catalog can be used to provide the necessary redshift information. However, the true host might not be contained in a catalog which is not complete out to the limit of gravitational-wave detectability. These electromagnetic and gravitational-wave selection effects must be accounted for. We describe and implement a method to estimate $H_0$ using both the counter","authors_text":"Ankan Sur, Archisman Ghosh, Christopher Messenger, Dani\\`ele A. Steer, Daniel E. Holz, Hong Qi, Hsin-Yu Chen, Ignacio Maga\\~na Hernandez, John Veitch, Jonathan R. Gair, Maya Fishbach, Patrick R. Brady, Rachel Gray, Simone Mastrogiovanni, Will M. Farr","cross_cats":["astro-ph.CO","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-16T16:30:53Z","title":"Cosmological Inference using Gravitational Wave Standard Sirens: A Mock Data Challenge"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.06050","kind":"arxiv","version":4},"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":"sha256:58418c6e1975a37b8a97d800217b6c887026aed1ef96a6768733ca346d6551bb","target":"record","created_at":"2026-07-05T01:09:38Z","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":"f7f95679e518245e420252473d1e6836e371005272c7e8cebd9502cfe57d4cbc","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-16T16:30:53Z","title_canon_sha256":"62d52174dd129d95b46859b70c64407518b9712a598f395d58b96421ce0f259c"},"schema_version":"1.0","source":{"id":"1908.06050","kind":"arxiv","version":4}},"canonical_sha256":"b06095493d44968dbcc2f32f45c85dc8545db5beaa0752263b03581735c1ed0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b06095493d44968dbcc2f32f45c85dc8545db5beaa0752263b03581735c1ed0e","first_computed_at":"2026-07-05T01:09:38.936578Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:09:38.936578Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uFezloX6jXQMU1HoGD+ciqYij6bMmUuhSiQ+A2tjGco0L77YzVssQ+DOdefBcld5BPRHqqswhcjhgYzwwmCiCg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:09:38.937053Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.06050","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58418c6e1975a37b8a97d800217b6c887026aed1ef96a6768733ca346d6551bb","sha256:e15d36f293df80c32d91bf4663f5dd8e9a173945f6af2aca226d256e615e42b0"],"state_sha256":"d538e69fe6275e87c068835ee46b157d71576ca7399dfb4d8fd96ae7cb31efdc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1eACEVk73J71r35uQAMOpUF75uS8UapxpPuLXJV2aIj5NN6R5VpKGYUi7yKVkpdYXCU/HM4hSR9ivJ23jj08Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T16:13:15.843060Z","bundle_sha256":"68d51629c56d4a679415817b04091d344bbede6b196ec7ba26bf6c3ba7e9430f"}}