{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:E64N4KH4OBODQFLGZJVGE6IBZK","short_pith_number":"pith:E64N4KH4","canonical_record":{"source":{"id":"2301.04232","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-10T22:37:16Z","cross_cats_sorted":[],"title_canon_sha256":"b1621967ee375158de43517171f29dc6385e2964881b61d9de778849765f9495","abstract_canon_sha256":"f685cb809612ff63759b4c9419dae11060990ec5dc512d817836f62c1d8e1ba4"},"schema_version":"1.0"},"canonical_sha256":"27b8de28fc705c381566ca6a627901caa7d4d1554b046b19156a062d5da54b15","source":{"kind":"arxiv","id":"2301.04232","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.04232","created_at":"2026-07-05T05:50:58Z"},{"alias_kind":"arxiv_version","alias_value":"2301.04232v2","created_at":"2026-07-05T05:50:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.04232","created_at":"2026-07-05T05:50:58Z"},{"alias_kind":"pith_short_12","alias_value":"E64N4KH4OBOD","created_at":"2026-07-05T05:50:58Z"},{"alias_kind":"pith_short_16","alias_value":"E64N4KH4OBODQFLG","created_at":"2026-07-05T05:50:58Z"},{"alias_kind":"pith_short_8","alias_value":"E64N4KH4","created_at":"2026-07-05T05:50:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:E64N4KH4OBODQFLGZJVGE6IBZK","target":"record","payload":{"canonical_record":{"source":{"id":"2301.04232","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-10T22:37:16Z","cross_cats_sorted":[],"title_canon_sha256":"b1621967ee375158de43517171f29dc6385e2964881b61d9de778849765f9495","abstract_canon_sha256":"f685cb809612ff63759b4c9419dae11060990ec5dc512d817836f62c1d8e1ba4"},"schema_version":"1.0"},"canonical_sha256":"27b8de28fc705c381566ca6a627901caa7d4d1554b046b19156a062d5da54b15","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:50:58.184827Z","signature_b64":"Lpzy+pIVkApRb5Bas+DSwKE8BGcMHUESMeCKYIrdgVT8OcwiTVf/MrcCHV1rH+/PHBjbdFbxFCu/od6Vc56RDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"27b8de28fc705c381566ca6a627901caa7d4d1554b046b19156a062d5da54b15","last_reissued_at":"2026-07-05T05:50:58.184396Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:50:58.184396Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2301.04232","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":"2026-07-05T05:50:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"snRR1B9gccld/psx5K3uc1MIvVXcmOR/5I5PMtX2s6mZiJxmHCSkk5BDKpQFwg/256xGt8sYLGcQrj06hv0gBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T01:48:17.753007Z"},"content_sha256":"52d8c7e80930f9832cbe1a9b632a51d7f0339318cad478ea035670e3c9e4ea17","schema_version":"1.0","event_id":"sha256:52d8c7e80930f9832cbe1a9b632a51d7f0339318cad478ea035670e3c9e4ea17"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:E64N4KH4OBODQFLGZJVGE6IBZK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Barium and related stars, and their white-dwarf companions. III. The masses of the white dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Escorza (ESO Chile), R. J. De Rosa (ESO Chile)","submitted_at":"2023-01-10T22:37:16Z","abstract_excerpt":"Masses are one of the most difficult stellar properties to measure. In the case of the white-dwarf companions of Barium stars, the situation is worse. These stars are dim, cool, and difficult to observe via direct methods. However, Ba stars were polluted by the Asymptotic Giant Branch progenitors of these WDs with matter rich in heavy elements, and the properties of their WD companions contain key information about binary interaction processes involving AGB stars and about the slow-neutron-capture(s)-process of nucleosynthesis. We aim to determine accurate and assumption-free masses for the WD"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.04232","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/2301.04232/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":"2026-07-05T05:50:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kjbXKcggAt7Kkvj9e3DyPeOvm7cm8k8J8+p6yE+RCYkE2Y4QqcY7s/RlwxakKhaa0LmXobADgdPpHs1jh977Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T01:48:17.753512Z"},"content_sha256":"854cc9aebe00ea581b4c9b2112bcf60ac48dab548a214ebbb2bf828a3e3e2aba","schema_version":"1.0","event_id":"sha256:854cc9aebe00ea581b4c9b2112bcf60ac48dab548a214ebbb2bf828a3e3e2aba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E64N4KH4OBODQFLGZJVGE6IBZK/bundle.json","state_url":"https://pith.science/pith/E64N4KH4OBODQFLGZJVGE6IBZK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E64N4KH4OBODQFLGZJVGE6IBZK/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":"2026-08-05T01:48:17Z","links":{"resolver":"https://pith.science/pith/E64N4KH4OBODQFLGZJVGE6IBZK","bundle":"https://pith.science/pith/E64N4KH4OBODQFLGZJVGE6IBZK/bundle.json","state":"https://pith.science/pith/E64N4KH4OBODQFLGZJVGE6IBZK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E64N4KH4OBODQFLGZJVGE6IBZK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:E64N4KH4OBODQFLGZJVGE6IBZK","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":"f685cb809612ff63759b4c9419dae11060990ec5dc512d817836f62c1d8e1ba4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-10T22:37:16Z","title_canon_sha256":"b1621967ee375158de43517171f29dc6385e2964881b61d9de778849765f9495"},"schema_version":"1.0","source":{"id":"2301.04232","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.04232","created_at":"2026-07-05T05:50:58Z"},{"alias_kind":"arxiv_version","alias_value":"2301.04232v2","created_at":"2026-07-05T05:50:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.04232","created_at":"2026-07-05T05:50:58Z"},{"alias_kind":"pith_short_12","alias_value":"E64N4KH4OBOD","created_at":"2026-07-05T05:50:58Z"},{"alias_kind":"pith_short_16","alias_value":"E64N4KH4OBODQFLG","created_at":"2026-07-05T05:50:58Z"},{"alias_kind":"pith_short_8","alias_value":"E64N4KH4","created_at":"2026-07-05T05:50:58Z"}],"graph_snapshots":[{"event_id":"sha256:854cc9aebe00ea581b4c9b2112bcf60ac48dab548a214ebbb2bf828a3e3e2aba","target":"graph","created_at":"2026-07-05T05:50:58Z","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/2301.04232/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Masses are one of the most difficult stellar properties to measure. In the case of the white-dwarf companions of Barium stars, the situation is worse. These stars are dim, cool, and difficult to observe via direct methods. However, Ba stars were polluted by the Asymptotic Giant Branch progenitors of these WDs with matter rich in heavy elements, and the properties of their WD companions contain key information about binary interaction processes involving AGB stars and about the slow-neutron-capture(s)-process of nucleosynthesis. We aim to determine accurate and assumption-free masses for the WD","authors_text":"A. Escorza (ESO Chile), R. J. De Rosa (ESO Chile)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-10T22:37:16Z","title":"Barium and related stars, and their white-dwarf companions. III. The masses of the white dwarfs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.04232","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":"sha256:52d8c7e80930f9832cbe1a9b632a51d7f0339318cad478ea035670e3c9e4ea17","target":"record","created_at":"2026-07-05T05:50:58Z","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":"f685cb809612ff63759b4c9419dae11060990ec5dc512d817836f62c1d8e1ba4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-10T22:37:16Z","title_canon_sha256":"b1621967ee375158de43517171f29dc6385e2964881b61d9de778849765f9495"},"schema_version":"1.0","source":{"id":"2301.04232","kind":"arxiv","version":2}},"canonical_sha256":"27b8de28fc705c381566ca6a627901caa7d4d1554b046b19156a062d5da54b15","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"27b8de28fc705c381566ca6a627901caa7d4d1554b046b19156a062d5da54b15","first_computed_at":"2026-07-05T05:50:58.184396Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:50:58.184396Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Lpzy+pIVkApRb5Bas+DSwKE8BGcMHUESMeCKYIrdgVT8OcwiTVf/MrcCHV1rH+/PHBjbdFbxFCu/od6Vc56RDw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:50:58.184827Z","signed_message":"canonical_sha256_bytes"},"source_id":"2301.04232","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:52d8c7e80930f9832cbe1a9b632a51d7f0339318cad478ea035670e3c9e4ea17","sha256:854cc9aebe00ea581b4c9b2112bcf60ac48dab548a214ebbb2bf828a3e3e2aba"],"state_sha256":"e5da974db7d3cd6affb686eaf4cf9d690da2ecc4f24a3dba8048dedd22a2d076"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"frUl6m5h2XEZMzMSmjg1V1AgtI7c3HFOUJXNWslMX8uSVGCETNXubj5qG20oxXtTlmdFVb11KX+4dBHOpin4CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T01:48:17.757145Z","bundle_sha256":"99ff3d3ca2fbcde653bf35f71cfef11743fa7b07988f61c38b5731aff3946e53"}}