{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:MIOEJJUQHC4ZOWFCO767F3WHYQ","short_pith_number":"pith:MIOEJJUQ","canonical_record":{"source":{"id":"1904.05954","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-04-11T21:02:30Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"be669e8c9d57b68f1b6575be90b7f30adfc7babb17ef06cd1efc593c4163c631","abstract_canon_sha256":"1f8263a8f35664520a4e5d260366189334d796b137a2d9e3ac38ec9ce5873737"},"schema_version":"1.0"},"canonical_sha256":"621c44a69038b99758a277fdf2eec7c43064d51f2b63608aece55e201c95be76","source":{"kind":"arxiv","id":"1904.05954","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.05954","created_at":"2026-07-05T09:35:04Z"},{"alias_kind":"arxiv_version","alias_value":"1904.05954v4","created_at":"2026-07-05T09:35:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.05954","created_at":"2026-07-05T09:35:04Z"},{"alias_kind":"pith_short_12","alias_value":"MIOEJJUQHC4Z","created_at":"2026-07-05T09:35:04Z"},{"alias_kind":"pith_short_16","alias_value":"MIOEJJUQHC4ZOWFC","created_at":"2026-07-05T09:35:04Z"},{"alias_kind":"pith_short_8","alias_value":"MIOEJJUQ","created_at":"2026-07-05T09:35:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:MIOEJJUQHC4ZOWFCO767F3WHYQ","target":"record","payload":{"canonical_record":{"source":{"id":"1904.05954","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-04-11T21:02:30Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"be669e8c9d57b68f1b6575be90b7f30adfc7babb17ef06cd1efc593c4163c631","abstract_canon_sha256":"1f8263a8f35664520a4e5d260366189334d796b137a2d9e3ac38ec9ce5873737"},"schema_version":"1.0"},"canonical_sha256":"621c44a69038b99758a277fdf2eec7c43064d51f2b63608aece55e201c95be76","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:35:04.264947Z","signature_b64":"eZX6LsSgB4+ZqLql2NcGED4kwAAWMmEv5c8V3taDc+mt7NbFaw88c8R+oGsBPeptvm8xLoGUD06Cl6qTl/3TDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"621c44a69038b99758a277fdf2eec7c43064d51f2b63608aece55e201c95be76","last_reissued_at":"2026-07-05T09:35:04.264474Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:35:04.264474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.05954","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":"2026-07-05T09:35:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0CY7+dX9mG26/Odt7uqgZ5T3pHX3zUTuZpb8q2yomzjrkT4GRSonwOOd7XnfUcdmhgviTG73dNeOTZVN6AnfBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T16:11:57.912971Z"},"content_sha256":"e0c1aced69fd718d4ee4734290fbf743b9b7fd127493c18296730929603feff4","schema_version":"1.0","event_id":"sha256:e0c1aced69fd718d4ee4734290fbf743b9b7fd127493c18296730929603feff4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:MIOEJJUQHC4ZOWFCO767F3WHYQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Improved Analytic Modeling of Neutron Star Interiors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"gr-qc","authors_text":"Kent Yagi, Nan Jiang","submitted_at":"2019-04-11T21:02:30Z","abstract_excerpt":"Studies of neutron stars are extremely timely given the recent detection of gravitational waves from a binary neutron star merger GW170817, and an International Space Station payload NICER currently in operation that aims to determine radii of neutron stars to a precision better than 5%. In many cases, neutron star solutions are constructed numerically due to the complexity of the field equations with realistic equations of state. However, in order to relate observables like the neutron star mass and radius to interior quantities like central density and pressure, it would be useful to provide"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.05954","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/1904.05954/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":"2026-07-05T09:35:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wGJ9NjYcCnY5bjXaj9t9Iep2cPlP4HhiXKqxeK3oLtOoa7IpH2wxhwNgHPOFbRZYPK+HcuaxfykAcqQGTlraAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T16:11:57.913516Z"},"content_sha256":"96dc0370a17433497929786a7f72f1ef634286e8cc66d0c8c50a35baf27a4b06","schema_version":"1.0","event_id":"sha256:96dc0370a17433497929786a7f72f1ef634286e8cc66d0c8c50a35baf27a4b06"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MIOEJJUQHC4ZOWFCO767F3WHYQ/bundle.json","state_url":"https://pith.science/pith/MIOEJJUQHC4ZOWFCO767F3WHYQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MIOEJJUQHC4ZOWFCO767F3WHYQ/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":"2026-08-12T16:11:57Z","links":{"resolver":"https://pith.science/pith/MIOEJJUQHC4ZOWFCO767F3WHYQ","bundle":"https://pith.science/pith/MIOEJJUQHC4ZOWFCO767F3WHYQ/bundle.json","state":"https://pith.science/pith/MIOEJJUQHC4ZOWFCO767F3WHYQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MIOEJJUQHC4ZOWFCO767F3WHYQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:MIOEJJUQHC4ZOWFCO767F3WHYQ","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":"1f8263a8f35664520a4e5d260366189334d796b137a2d9e3ac38ec9ce5873737","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-04-11T21:02:30Z","title_canon_sha256":"be669e8c9d57b68f1b6575be90b7f30adfc7babb17ef06cd1efc593c4163c631"},"schema_version":"1.0","source":{"id":"1904.05954","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.05954","created_at":"2026-07-05T09:35:04Z"},{"alias_kind":"arxiv_version","alias_value":"1904.05954v4","created_at":"2026-07-05T09:35:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.05954","created_at":"2026-07-05T09:35:04Z"},{"alias_kind":"pith_short_12","alias_value":"MIOEJJUQHC4Z","created_at":"2026-07-05T09:35:04Z"},{"alias_kind":"pith_short_16","alias_value":"MIOEJJUQHC4ZOWFC","created_at":"2026-07-05T09:35:04Z"},{"alias_kind":"pith_short_8","alias_value":"MIOEJJUQ","created_at":"2026-07-05T09:35:04Z"}],"graph_snapshots":[{"event_id":"sha256:96dc0370a17433497929786a7f72f1ef634286e8cc66d0c8c50a35baf27a4b06","target":"graph","created_at":"2026-07-05T09:35:04Z","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/1904.05954/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Studies of neutron stars are extremely timely given the recent detection of gravitational waves from a binary neutron star merger GW170817, and an International Space Station payload NICER currently in operation that aims to determine radii of neutron stars to a precision better than 5%. In many cases, neutron star solutions are constructed numerically due to the complexity of the field equations with realistic equations of state. However, in order to relate observables like the neutron star mass and radius to interior quantities like central density and pressure, it would be useful to provide","authors_text":"Kent Yagi, Nan Jiang","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-04-11T21:02:30Z","title":"Improved Analytic Modeling of Neutron Star Interiors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.05954","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:e0c1aced69fd718d4ee4734290fbf743b9b7fd127493c18296730929603feff4","target":"record","created_at":"2026-07-05T09:35:04Z","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":"1f8263a8f35664520a4e5d260366189334d796b137a2d9e3ac38ec9ce5873737","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-04-11T21:02:30Z","title_canon_sha256":"be669e8c9d57b68f1b6575be90b7f30adfc7babb17ef06cd1efc593c4163c631"},"schema_version":"1.0","source":{"id":"1904.05954","kind":"arxiv","version":4}},"canonical_sha256":"621c44a69038b99758a277fdf2eec7c43064d51f2b63608aece55e201c95be76","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"621c44a69038b99758a277fdf2eec7c43064d51f2b63608aece55e201c95be76","first_computed_at":"2026-07-05T09:35:04.264474Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:35:04.264474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eZX6LsSgB4+ZqLql2NcGED4kwAAWMmEv5c8V3taDc+mt7NbFaw88c8R+oGsBPeptvm8xLoGUD06Cl6qTl/3TDg==","signature_status":"signed_v1","signed_at":"2026-07-05T09:35:04.264947Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.05954","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e0c1aced69fd718d4ee4734290fbf743b9b7fd127493c18296730929603feff4","sha256:96dc0370a17433497929786a7f72f1ef634286e8cc66d0c8c50a35baf27a4b06"],"state_sha256":"f3c754c237360e8a280a24f37fb38bd0ff5b0916fde363973d18d9a781cb1102"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"158zEdqTA3QOh9mkdiXqa/XyRWTzbzsj7A3atnM/xJOqQl7vHadJEKr1rWSWhcFsnfWrMKo1rOkL23+PJ2T0DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T16:11:57.918045Z","bundle_sha256":"d67fd194e261de5a475ddc3ca6f5df6ec8297e986f47bdd32ffd07ac288ef8bc"}}