{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:DJJHVSD3F3G6UE5AJWP5UYEOY7","short_pith_number":"pith:DJJHVSD3","canonical_record":{"source":{"id":"1912.10210","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-21T06:48:32Z","cross_cats_sorted":["astro-ph.CO","hep-ph"],"title_canon_sha256":"6b60ad5c16bb9b97b2bb3b430f7c3c0ef96a402ab235e7b8c5c6c4970362891c","abstract_canon_sha256":"a170d48d9e6cf7ba5a391dbb7c91afbf680018e33eacbeaec66a8c039d71ef2f"},"schema_version":"1.0"},"canonical_sha256":"1a527ac87b2ecdea13a04d9fda608ec7ccdaaf34070611007ef71a42290e7be4","source":{"kind":"arxiv","id":"1912.10210","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.10210","created_at":"2026-07-05T01:04:29Z"},{"alias_kind":"arxiv_version","alias_value":"1912.10210v2","created_at":"2026-07-05T01:04:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.10210","created_at":"2026-07-05T01:04:29Z"},{"alias_kind":"pith_short_12","alias_value":"DJJHVSD3F3G6","created_at":"2026-07-05T01:04:29Z"},{"alias_kind":"pith_short_16","alias_value":"DJJHVSD3F3G6UE5A","created_at":"2026-07-05T01:04:29Z"},{"alias_kind":"pith_short_8","alias_value":"DJJHVSD3","created_at":"2026-07-05T01:04:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:DJJHVSD3F3G6UE5AJWP5UYEOY7","target":"record","payload":{"canonical_record":{"source":{"id":"1912.10210","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-21T06:48:32Z","cross_cats_sorted":["astro-ph.CO","hep-ph"],"title_canon_sha256":"6b60ad5c16bb9b97b2bb3b430f7c3c0ef96a402ab235e7b8c5c6c4970362891c","abstract_canon_sha256":"a170d48d9e6cf7ba5a391dbb7c91afbf680018e33eacbeaec66a8c039d71ef2f"},"schema_version":"1.0"},"canonical_sha256":"1a527ac87b2ecdea13a04d9fda608ec7ccdaaf34070611007ef71a42290e7be4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:04:29.928465Z","signature_b64":"sg9UO2E3lSrXUnvWR3leyx6O742XRuv6nIsyrunrz4Z5QvFUZyHjXMRZ+8VQEtksSW4IvaPfShb1Evo5KRxNAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1a527ac87b2ecdea13a04d9fda608ec7ccdaaf34070611007ef71a42290e7be4","last_reissued_at":"2026-07-05T01:04:29.928101Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:04:29.928101Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.10210","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":"2026-07-05T01:04:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fbw8Wiuco+N6zMbytqtHA43I8Z++Bemc0JBozrU4U1xCwwnAuwXaPNrbHwsQ/w2UwVYN5D4bC823W2OXiZmqCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T12:39:13.460485Z"},"content_sha256":"6bf18a0f83f2a9f761a3833c63f59f7f2111ea331a43763dcd514e141e794ac7","schema_version":"1.0","event_id":"sha256:6bf18a0f83f2a9f761a3833c63f59f7f2111ea331a43763dcd514e141e794ac7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:DJJHVSD3F3G6UE5AJWP5UYEOY7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pulsar timing residual induced by ultralight vector dark matter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-ph"],"primary_cat":"gr-qc","authors_text":"Asuka Ito, Jiro Soda, Kimihiro Nomura","submitted_at":"2019-12-21T06:48:32Z","abstract_excerpt":"We study the ultralight vector dark matter with a mass around $10^{-23}\\,\\mathrm{eV}$. The vector field oscillating coherently on galactic scales induces oscillations of the spacetime metric with a frequency around nHz, which is detectable by pulsar timing arrays. We find that the pulsar timing signal due to the vector dark matter has nontrivial angular dependence unlike the scalar dark matter and the maximal amplitude is three times larger than that of the scalar dark matter."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.10210","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/1912.10210/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":"2026-07-05T01:04:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gHQ4T6TUEvgZlmyMpP/JJvdt92SWPsqphMwvtGWhE+VfYO5MqGCo+H9LnQBx6BKKGxGsbKM6bTzVbx1+uf7jDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T12:39:13.461010Z"},"content_sha256":"659e7b4f0abbafde01c11fa57c142a6b0200f58166a7c3f4d55af6601b59c943","schema_version":"1.0","event_id":"sha256:659e7b4f0abbafde01c11fa57c142a6b0200f58166a7c3f4d55af6601b59c943"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DJJHVSD3F3G6UE5AJWP5UYEOY7/bundle.json","state_url":"https://pith.science/pith/DJJHVSD3F3G6UE5AJWP5UYEOY7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DJJHVSD3F3G6UE5AJWP5UYEOY7/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":"2026-08-19T12:39:13Z","links":{"resolver":"https://pith.science/pith/DJJHVSD3F3G6UE5AJWP5UYEOY7","bundle":"https://pith.science/pith/DJJHVSD3F3G6UE5AJWP5UYEOY7/bundle.json","state":"https://pith.science/pith/DJJHVSD3F3G6UE5AJWP5UYEOY7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DJJHVSD3F3G6UE5AJWP5UYEOY7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:DJJHVSD3F3G6UE5AJWP5UYEOY7","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":"a170d48d9e6cf7ba5a391dbb7c91afbf680018e33eacbeaec66a8c039d71ef2f","cross_cats_sorted":["astro-ph.CO","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-21T06:48:32Z","title_canon_sha256":"6b60ad5c16bb9b97b2bb3b430f7c3c0ef96a402ab235e7b8c5c6c4970362891c"},"schema_version":"1.0","source":{"id":"1912.10210","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.10210","created_at":"2026-07-05T01:04:29Z"},{"alias_kind":"arxiv_version","alias_value":"1912.10210v2","created_at":"2026-07-05T01:04:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.10210","created_at":"2026-07-05T01:04:29Z"},{"alias_kind":"pith_short_12","alias_value":"DJJHVSD3F3G6","created_at":"2026-07-05T01:04:29Z"},{"alias_kind":"pith_short_16","alias_value":"DJJHVSD3F3G6UE5A","created_at":"2026-07-05T01:04:29Z"},{"alias_kind":"pith_short_8","alias_value":"DJJHVSD3","created_at":"2026-07-05T01:04:29Z"}],"graph_snapshots":[{"event_id":"sha256:659e7b4f0abbafde01c11fa57c142a6b0200f58166a7c3f4d55af6601b59c943","target":"graph","created_at":"2026-07-05T01:04:29Z","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/1912.10210/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the ultralight vector dark matter with a mass around $10^{-23}\\,\\mathrm{eV}$. The vector field oscillating coherently on galactic scales induces oscillations of the spacetime metric with a frequency around nHz, which is detectable by pulsar timing arrays. We find that the pulsar timing signal due to the vector dark matter has nontrivial angular dependence unlike the scalar dark matter and the maximal amplitude is three times larger than that of the scalar dark matter.","authors_text":"Asuka Ito, Jiro Soda, Kimihiro Nomura","cross_cats":["astro-ph.CO","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-21T06:48:32Z","title":"Pulsar timing residual induced by ultralight vector dark matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.10210","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":"sha256:6bf18a0f83f2a9f761a3833c63f59f7f2111ea331a43763dcd514e141e794ac7","target":"record","created_at":"2026-07-05T01:04:29Z","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":"a170d48d9e6cf7ba5a391dbb7c91afbf680018e33eacbeaec66a8c039d71ef2f","cross_cats_sorted":["astro-ph.CO","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-12-21T06:48:32Z","title_canon_sha256":"6b60ad5c16bb9b97b2bb3b430f7c3c0ef96a402ab235e7b8c5c6c4970362891c"},"schema_version":"1.0","source":{"id":"1912.10210","kind":"arxiv","version":2}},"canonical_sha256":"1a527ac87b2ecdea13a04d9fda608ec7ccdaaf34070611007ef71a42290e7be4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1a527ac87b2ecdea13a04d9fda608ec7ccdaaf34070611007ef71a42290e7be4","first_computed_at":"2026-07-05T01:04:29.928101Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:04:29.928101Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sg9UO2E3lSrXUnvWR3leyx6O742XRuv6nIsyrunrz4Z5QvFUZyHjXMRZ+8VQEtksSW4IvaPfShb1Evo5KRxNAA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:04:29.928465Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.10210","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6bf18a0f83f2a9f761a3833c63f59f7f2111ea331a43763dcd514e141e794ac7","sha256:659e7b4f0abbafde01c11fa57c142a6b0200f58166a7c3f4d55af6601b59c943"],"state_sha256":"41aec12f83c0ab3c476b2c615a01fc017e6dc47b2b95694720b0213437849d35"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JQmjh+jjSV/ODliA39EOG39ZpV0zEDBrMhBQYIel3Wa3Le+mebSW74453wYFK6LM2YTpUZ01nOMXVAQmmdCZBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T12:39:13.466423Z","bundle_sha256":"0da20b3137bb0f266d41374ffb7be7398179c76bc3ffe2bd98f188247aea43ad"}}