{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:YKA2P6QQ72A6LKNZTCGST6B2IS","short_pith_number":"pith:YKA2P6QQ","canonical_record":{"source":{"id":"2304.10435","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-04-20T16:26:58Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"57d7cc5f856c6df893f2e41a3ee99f1c350907e18c46ab096ef974c86607273d","abstract_canon_sha256":"93e2bd63bd759376201ab03c30c42128563a7b0e56ee196b239fe7b60cd7da7f"},"schema_version":"1.0"},"canonical_sha256":"c281a7fa10fe81e5a9b9988d29f83a44b25138e33630fa697395c11783704d3f","source":{"kind":"arxiv","id":"2304.10435","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.10435","created_at":"2026-07-05T06:38:54Z"},{"alias_kind":"arxiv_version","alias_value":"2304.10435v2","created_at":"2026-07-05T06:38:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.10435","created_at":"2026-07-05T06:38:54Z"},{"alias_kind":"pith_short_12","alias_value":"YKA2P6QQ72A6","created_at":"2026-07-05T06:38:54Z"},{"alias_kind":"pith_short_16","alias_value":"YKA2P6QQ72A6LKNZ","created_at":"2026-07-05T06:38:54Z"},{"alias_kind":"pith_short_8","alias_value":"YKA2P6QQ","created_at":"2026-07-05T06:38:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:YKA2P6QQ72A6LKNZTCGST6B2IS","target":"record","payload":{"canonical_record":{"source":{"id":"2304.10435","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-04-20T16:26:58Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"57d7cc5f856c6df893f2e41a3ee99f1c350907e18c46ab096ef974c86607273d","abstract_canon_sha256":"93e2bd63bd759376201ab03c30c42128563a7b0e56ee196b239fe7b60cd7da7f"},"schema_version":"1.0"},"canonical_sha256":"c281a7fa10fe81e5a9b9988d29f83a44b25138e33630fa697395c11783704d3f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:38:54.016012Z","signature_b64":"8SimC02Tlv4wvGSWATeSk776UQqv4sPY9W7NXBuhMy3UxaLlMGqrGX4tWYpEE8TzFzzRjAqPk6sa6fXRA+CaBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c281a7fa10fe81e5a9b9988d29f83a44b25138e33630fa697395c11783704d3f","last_reissued_at":"2026-07-05T06:38:54.015520Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:38:54.015520Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2304.10435","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:38:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+9jrsMDHvphraTdOdcZkHKGxaJl5eim7VtaIUClQVrSabLrZRfod/1kN5G37rRU3pb37UKez6/eIv7xn8BWGBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T17:24:44.309507Z"},"content_sha256":"b687d836d7de314899a56f0f6d6e0d4318b3b6d201aaa149e28c43e8c4be2b09","schema_version":"1.0","event_id":"sha256:b687d836d7de314899a56f0f6d6e0d4318b3b6d201aaa149e28c43e8c4be2b09"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:YKA2P6QQ72A6LKNZTCGST6B2IS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measuring the Hubble Constant Using Strongly Lensed Gravitational Wave Signals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"En-Kun Li, Jian-dong Zhang, Shun-Jia Huang, Xian Chen, Xin-yi Lin, Yi-Ming Hu, Zucheng Gao","submitted_at":"2023-04-20T16:26:58Z","abstract_excerpt":"The measurement of the Hubble constant $H_0$ plays an important role in the study of cosmology. In this letter, we propose a new method to constrain the Hubble constant using the strongly lensed gravitational wave (GW) signals. By reparameterizing the waveform, we find that the lensed waveform is sensitive to the $H_0$. Assuming the scenario that no electromagnetic counterpart of the GW source can be identified, our method can still give meaningful constraints on the $H_0$ with the information of the lens redshift. We then apply Fisher information matrix and Markov Chain Monte Carlo to evaluat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.10435","kind":"arxiv","version":2},"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/2304.10435/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":"2026-07-05T06:38:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LnAOa1avrK//0YBoivWuO07/C59ZgCM1D2x3QD5XbCYuYvoRvsxm30Tzqpr9hwf7R7qFsRbpeXtsna/Bh4A5Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T17:24:44.310443Z"},"content_sha256":"54b93c0e22a04673e00b29dde47850c7248f310bbbb75f042eecdd263f2248b9","schema_version":"1.0","event_id":"sha256:54b93c0e22a04673e00b29dde47850c7248f310bbbb75f042eecdd263f2248b9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YKA2P6QQ72A6LKNZTCGST6B2IS/bundle.json","state_url":"https://pith.science/pith/YKA2P6QQ72A6LKNZTCGST6B2IS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YKA2P6QQ72A6LKNZTCGST6B2IS/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":"2026-08-04T17:24:44Z","links":{"resolver":"https://pith.science/pith/YKA2P6QQ72A6LKNZTCGST6B2IS","bundle":"https://pith.science/pith/YKA2P6QQ72A6LKNZTCGST6B2IS/bundle.json","state":"https://pith.science/pith/YKA2P6QQ72A6LKNZTCGST6B2IS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YKA2P6QQ72A6LKNZTCGST6B2IS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:YKA2P6QQ72A6LKNZTCGST6B2IS","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":"93e2bd63bd759376201ab03c30c42128563a7b0e56ee196b239fe7b60cd7da7f","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-04-20T16:26:58Z","title_canon_sha256":"57d7cc5f856c6df893f2e41a3ee99f1c350907e18c46ab096ef974c86607273d"},"schema_version":"1.0","source":{"id":"2304.10435","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.10435","created_at":"2026-07-05T06:38:54Z"},{"alias_kind":"arxiv_version","alias_value":"2304.10435v2","created_at":"2026-07-05T06:38:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.10435","created_at":"2026-07-05T06:38:54Z"},{"alias_kind":"pith_short_12","alias_value":"YKA2P6QQ72A6","created_at":"2026-07-05T06:38:54Z"},{"alias_kind":"pith_short_16","alias_value":"YKA2P6QQ72A6LKNZ","created_at":"2026-07-05T06:38:54Z"},{"alias_kind":"pith_short_8","alias_value":"YKA2P6QQ","created_at":"2026-07-05T06:38:54Z"}],"graph_snapshots":[{"event_id":"sha256:54b93c0e22a04673e00b29dde47850c7248f310bbbb75f042eecdd263f2248b9","target":"graph","created_at":"2026-07-05T06:38:54Z","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/2304.10435/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The measurement of the Hubble constant $H_0$ plays an important role in the study of cosmology. In this letter, we propose a new method to constrain the Hubble constant using the strongly lensed gravitational wave (GW) signals. By reparameterizing the waveform, we find that the lensed waveform is sensitive to the $H_0$. Assuming the scenario that no electromagnetic counterpart of the GW source can be identified, our method can still give meaningful constraints on the $H_0$ with the information of the lens redshift. We then apply Fisher information matrix and Markov Chain Monte Carlo to evaluat","authors_text":"En-Kun Li, Jian-dong Zhang, Shun-Jia Huang, Xian Chen, Xin-yi Lin, Yi-Ming Hu, Zucheng Gao","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-04-20T16:26:58Z","title":"Measuring the Hubble Constant Using Strongly Lensed Gravitational Wave Signals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.10435","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:b687d836d7de314899a56f0f6d6e0d4318b3b6d201aaa149e28c43e8c4be2b09","target":"record","created_at":"2026-07-05T06:38:54Z","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":"93e2bd63bd759376201ab03c30c42128563a7b0e56ee196b239fe7b60cd7da7f","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-04-20T16:26:58Z","title_canon_sha256":"57d7cc5f856c6df893f2e41a3ee99f1c350907e18c46ab096ef974c86607273d"},"schema_version":"1.0","source":{"id":"2304.10435","kind":"arxiv","version":2}},"canonical_sha256":"c281a7fa10fe81e5a9b9988d29f83a44b25138e33630fa697395c11783704d3f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c281a7fa10fe81e5a9b9988d29f83a44b25138e33630fa697395c11783704d3f","first_computed_at":"2026-07-05T06:38:54.015520Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:38:54.015520Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8SimC02Tlv4wvGSWATeSk776UQqv4sPY9W7NXBuhMy3UxaLlMGqrGX4tWYpEE8TzFzzRjAqPk6sa6fXRA+CaBA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:38:54.016012Z","signed_message":"canonical_sha256_bytes"},"source_id":"2304.10435","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b687d836d7de314899a56f0f6d6e0d4318b3b6d201aaa149e28c43e8c4be2b09","sha256:54b93c0e22a04673e00b29dde47850c7248f310bbbb75f042eecdd263f2248b9"],"state_sha256":"517728c0fd045ed7b774158dd3ca54e079d8aa579e8829fee98a9dbc73ae4fbe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MDQnRBS0t40YjNbMdF+Hzw6eibZQlmYEcbJyujsEXR7UqDnH7r98FzQ5oqjdufsoXOTd8tdgxDDfKfjCM1uGAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T17:24:44.318059Z","bundle_sha256":"b1d4fe33f02b1b1d2063c42800fbdd83ce9cfc18b4b8541b4bfb7b18650d027f"}}