{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:2CMLIPF7QTHV5NYQNKVT2SVUVY","short_pith_number":"pith:2CMLIPF7","canonical_record":{"source":{"id":"1908.05114","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-08-14T13:23:40Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"ce81ebdef647057b68472da4ec05b162e3f7464d89762a4b6a92a462b1b83841","abstract_canon_sha256":"5773895801e829b35d3a830da1d479c9ad192f74d0b4a71e3c0815a7c8ee3575"},"schema_version":"1.0"},"canonical_sha256":"d098b43cbf84cf5eb7106aab3d4ab4ae0f9e6409caed83bd0ce7aa5710e04f5a","source":{"kind":"arxiv","id":"1908.05114","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.05114","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"arxiv_version","alias_value":"1908.05114v2","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.05114","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"pith_short_12","alias_value":"2CMLIPF7QTHV","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"pith_short_16","alias_value":"2CMLIPF7QTHV5NYQ","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"pith_short_8","alias_value":"2CMLIPF7","created_at":"2026-07-05T02:15:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:2CMLIPF7QTHV5NYQNKVT2SVUVY","target":"record","payload":{"canonical_record":{"source":{"id":"1908.05114","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-08-14T13:23:40Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"ce81ebdef647057b68472da4ec05b162e3f7464d89762a4b6a92a462b1b83841","abstract_canon_sha256":"5773895801e829b35d3a830da1d479c9ad192f74d0b4a71e3c0815a7c8ee3575"},"schema_version":"1.0"},"canonical_sha256":"d098b43cbf84cf5eb7106aab3d4ab4ae0f9e6409caed83bd0ce7aa5710e04f5a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:15:08.942713Z","signature_b64":"+oId8EgiozSsaMSQX7N8s1VVSncYaBw65ex6UrUbYHqdooUbMj3BVJp2Wz0bBrRcr3/Uxo5BpauZ/gG77G9lCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d098b43cbf84cf5eb7106aab3d4ab4ae0f9e6409caed83bd0ce7aa5710e04f5a","last_reissued_at":"2026-07-05T02:15:08.942258Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:15:08.942258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.05114","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":"2026-07-05T02:15:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tz7+d5R3ZWm/oNAHXu0Uon+QSGVfAYWcFDYzPYZQwmRmgjox8tpEMl+bJI6t6acaYZQgaLPasgww0LC21vinCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T17:37:59.000832Z"},"content_sha256":"ebf0ba01e5632f0ccf0dbcef836cc4cbbf21bc288a9bbcc5259937747b78ce4a","schema_version":"1.0","event_id":"sha256:ebf0ba01e5632f0ccf0dbcef836cc4cbbf21bc288a9bbcc5259937747b78ce4a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:2CMLIPF7QTHV5NYQNKVT2SVUVY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Density-dependent van der Waals model under the GW170817 constraint","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"nucl-th","authors_text":"B. M. Santos, C. H. Lenzi, M. Bhuyan, M. Dutra, O. Louren\\c{c}o, S. K. Biswal","submitted_at":"2019-08-14T13:23:40Z","abstract_excerpt":"We propose a density-dependent function for the attractive interaction in the original van der Waals model to correctly describe the flow constraint at the high-density regime of the symmetric nuclear matter. After a generalization to asymmetric nuclear matter, it was also possible to study the stellar matter regime from this new model. The mass-radius relation for neutron stars under $\\beta$-equilibrium is found to agree with recent X-ray observations. The neutron star masses supported against gravity, obtained from some parametrizations of the model, are in the range of $(1.97-2.07)M_{\\odot}"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.05114","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/1908.05114/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":"2026-07-05T02:15:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kPjf7gsQg2wV3Y+eQQaB9MyJiFWfhuVPH+MsVCTXlhKWL3m8xR1D6a5mP2BfABlFz5NdXQdPUCGrkyYR/ZnqBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T17:37:59.001375Z"},"content_sha256":"48a44842d3a2e671e72f47ce05b1fa4a07276dcdb0fd1198d336de64c24269fc","schema_version":"1.0","event_id":"sha256:48a44842d3a2e671e72f47ce05b1fa4a07276dcdb0fd1198d336de64c24269fc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2CMLIPF7QTHV5NYQNKVT2SVUVY/bundle.json","state_url":"https://pith.science/pith/2CMLIPF7QTHV5NYQNKVT2SVUVY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2CMLIPF7QTHV5NYQNKVT2SVUVY/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":"2026-08-11T17:37:59Z","links":{"resolver":"https://pith.science/pith/2CMLIPF7QTHV5NYQNKVT2SVUVY","bundle":"https://pith.science/pith/2CMLIPF7QTHV5NYQNKVT2SVUVY/bundle.json","state":"https://pith.science/pith/2CMLIPF7QTHV5NYQNKVT2SVUVY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2CMLIPF7QTHV5NYQNKVT2SVUVY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:2CMLIPF7QTHV5NYQNKVT2SVUVY","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":"5773895801e829b35d3a830da1d479c9ad192f74d0b4a71e3c0815a7c8ee3575","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-08-14T13:23:40Z","title_canon_sha256":"ce81ebdef647057b68472da4ec05b162e3f7464d89762a4b6a92a462b1b83841"},"schema_version":"1.0","source":{"id":"1908.05114","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.05114","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"arxiv_version","alias_value":"1908.05114v2","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.05114","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"pith_short_12","alias_value":"2CMLIPF7QTHV","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"pith_short_16","alias_value":"2CMLIPF7QTHV5NYQ","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"pith_short_8","alias_value":"2CMLIPF7","created_at":"2026-07-05T02:15:08Z"}],"graph_snapshots":[{"event_id":"sha256:48a44842d3a2e671e72f47ce05b1fa4a07276dcdb0fd1198d336de64c24269fc","target":"graph","created_at":"2026-07-05T02:15:08Z","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/1908.05114/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose a density-dependent function for the attractive interaction in the original van der Waals model to correctly describe the flow constraint at the high-density regime of the symmetric nuclear matter. After a generalization to asymmetric nuclear matter, it was also possible to study the stellar matter regime from this new model. The mass-radius relation for neutron stars under $\\beta$-equilibrium is found to agree with recent X-ray observations. The neutron star masses supported against gravity, obtained from some parametrizations of the model, are in the range of $(1.97-2.07)M_{\\odot}","authors_text":"B. M. Santos, C. H. Lenzi, M. Bhuyan, M. Dutra, O. Louren\\c{c}o, S. K. Biswal","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-08-14T13:23:40Z","title":"Density-dependent van der Waals model under the GW170817 constraint"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.05114","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:ebf0ba01e5632f0ccf0dbcef836cc4cbbf21bc288a9bbcc5259937747b78ce4a","target":"record","created_at":"2026-07-05T02:15:08Z","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":"5773895801e829b35d3a830da1d479c9ad192f74d0b4a71e3c0815a7c8ee3575","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2019-08-14T13:23:40Z","title_canon_sha256":"ce81ebdef647057b68472da4ec05b162e3f7464d89762a4b6a92a462b1b83841"},"schema_version":"1.0","source":{"id":"1908.05114","kind":"arxiv","version":2}},"canonical_sha256":"d098b43cbf84cf5eb7106aab3d4ab4ae0f9e6409caed83bd0ce7aa5710e04f5a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d098b43cbf84cf5eb7106aab3d4ab4ae0f9e6409caed83bd0ce7aa5710e04f5a","first_computed_at":"2026-07-05T02:15:08.942258Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:15:08.942258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+oId8EgiozSsaMSQX7N8s1VVSncYaBw65ex6UrUbYHqdooUbMj3BVJp2Wz0bBrRcr3/Uxo5BpauZ/gG77G9lCA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:15:08.942713Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.05114","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ebf0ba01e5632f0ccf0dbcef836cc4cbbf21bc288a9bbcc5259937747b78ce4a","sha256:48a44842d3a2e671e72f47ce05b1fa4a07276dcdb0fd1198d336de64c24269fc"],"state_sha256":"24cba745a6e3b10ea936fff22efcf4f1b0180e945575a33b3bda9afb0b07c1c9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kvqoPVAgLPxiIxmMFFCah8PsPlpfFgTsFPozwsQG3SWaGVST31FJWVndYPP9vbLuvJRKAcAqqZC0jdgXWwt/Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T17:37:59.006863Z","bundle_sha256":"299d473cf27bbc795261e9662ecb56541d60b96a91d3f26073cba290de87bd4f"}}