{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1998:VYKUPDILV6MKXVS2ELEBRK2LZS","short_pith_number":"pith:VYKUPDIL","canonical_record":{"source":{"id":"astro-ph/9808272","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-08-24T19:20:07Z","cross_cats_sorted":[],"title_canon_sha256":"8365475c125871af5857b041b457032fbcaf7cfe1bc6d5bf771062ab3752a6dd","abstract_canon_sha256":"719ad32aceeafc473e28b96faa56caf8c6c48c9c445d1386befd5665b70c03ed"},"schema_version":"1.0"},"canonical_sha256":"ae15478d0baf98abd65a22c818ab4bcca1929cbaef929b4a4994d05ea613b90d","source":{"kind":"arxiv","id":"astro-ph/9808272","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9808272","created_at":"2026-07-04T16:06:57Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9808272v2","created_at":"2026-07-04T16:06:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9808272","created_at":"2026-07-04T16:06:57Z"},{"alias_kind":"pith_short_12","alias_value":"VYKUPDILV6MK","created_at":"2026-07-04T16:06:57Z"},{"alias_kind":"pith_short_16","alias_value":"VYKUPDILV6MKXVS2","created_at":"2026-07-04T16:06:57Z"},{"alias_kind":"pith_short_8","alias_value":"VYKUPDIL","created_at":"2026-07-04T16:06:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1998:VYKUPDILV6MKXVS2ELEBRK2LZS","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9808272","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-08-24T19:20:07Z","cross_cats_sorted":[],"title_canon_sha256":"8365475c125871af5857b041b457032fbcaf7cfe1bc6d5bf771062ab3752a6dd","abstract_canon_sha256":"719ad32aceeafc473e28b96faa56caf8c6c48c9c445d1386befd5665b70c03ed"},"schema_version":"1.0"},"canonical_sha256":"ae15478d0baf98abd65a22c818ab4bcca1929cbaef929b4a4994d05ea613b90d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:06:57.562783Z","signature_b64":"xjpkrB9xeiccg1AlFnvG350k4XPZ0FDjMmGXOimmtMrEvGZGVY3Prwdfgijhe9q/1SneKqw4ZnqWxkupBYU8Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ae15478d0baf98abd65a22c818ab4bcca1929cbaef929b4a4994d05ea613b90d","last_reissued_at":"2026-07-04T16:06:57.562370Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:06:57.562370Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9808272","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":"2026-07-04T16:06:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kvn+r/HpXbC3YhwsD/EunMoeztfuqjB53Tig0m0Q/ej/hy9SNiuelFzNtZpG4fxQo9wl+sB0y3jUcP1R7Pf7Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:21:12.627907Z"},"content_sha256":"371f662cbe48402c5bbc2e04a31aa88c001ecb7b351bed2bb7e353a26eb2d0ff","schema_version":"1.0","event_id":"sha256:371f662cbe48402c5bbc2e04a31aa88c001ecb7b351bed2bb7e353a26eb2d0ff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1998:VYKUPDILV6MKXVS2ELEBRK2LZS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"R-Process Abundances and Chronometers in Metal-Poor Stars","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"B. Pfeiffer, Christopher Sneden, David Tytler, F.-K. Thielemann, John J. Cowan, K.-L. Kratz, Scott Burles, Timothy C. Beers","submitted_at":"1998-08-24T19:20:07Z","abstract_excerpt":"Rapid neutron-capture (i.e., r-process) nucleosynthesis calculations, employing internally consistent and physically realistic nuclear physics input (QRPA beta-decay rates and the ETFSI-Q nuclear mass model), have been made. These calculations are compared with ground-based and HST observations of neutron-capture elements in the metal poor halo stars CS 22892--052, HD 115444, HD 122563 and HD 126238. The elemental abundances in all four metal-poor stars are consistent with the solar r-process elemental distribution for the elements Z >/= 56. These results strongly suggest, at least for those e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9808272","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/astro-ph/9808272/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":"2026-07-04T16:06:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SK38WXxPb0rBxlMiRgSvOm7K3NtbcOTYAgENMacR8UZrHA561ncaCSjXKU75U4jRStyFl5r0G8RCicmmXLneBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:21:12.628446Z"},"content_sha256":"5deac5be65cbc9951750cd42e5f15a034e0c09d2db1eece69d0faa547b33d190","schema_version":"1.0","event_id":"sha256:5deac5be65cbc9951750cd42e5f15a034e0c09d2db1eece69d0faa547b33d190"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS/bundle.json","state_url":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VYKUPDILV6MKXVS2ELEBRK2LZS/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":"2026-08-03T16:21:12Z","links":{"resolver":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS","bundle":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS/bundle.json","state":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VYKUPDILV6MKXVS2ELEBRK2LZS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:VYKUPDILV6MKXVS2ELEBRK2LZS","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":"719ad32aceeafc473e28b96faa56caf8c6c48c9c445d1386befd5665b70c03ed","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-08-24T19:20:07Z","title_canon_sha256":"8365475c125871af5857b041b457032fbcaf7cfe1bc6d5bf771062ab3752a6dd"},"schema_version":"1.0","source":{"id":"astro-ph/9808272","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9808272","created_at":"2026-07-04T16:06:57Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9808272v2","created_at":"2026-07-04T16:06:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9808272","created_at":"2026-07-04T16:06:57Z"},{"alias_kind":"pith_short_12","alias_value":"VYKUPDILV6MK","created_at":"2026-07-04T16:06:57Z"},{"alias_kind":"pith_short_16","alias_value":"VYKUPDILV6MKXVS2","created_at":"2026-07-04T16:06:57Z"},{"alias_kind":"pith_short_8","alias_value":"VYKUPDIL","created_at":"2026-07-04T16:06:57Z"}],"graph_snapshots":[{"event_id":"sha256:5deac5be65cbc9951750cd42e5f15a034e0c09d2db1eece69d0faa547b33d190","target":"graph","created_at":"2026-07-04T16:06:57Z","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/astro-ph/9808272/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Rapid neutron-capture (i.e., r-process) nucleosynthesis calculations, employing internally consistent and physically realistic nuclear physics input (QRPA beta-decay rates and the ETFSI-Q nuclear mass model), have been made. These calculations are compared with ground-based and HST observations of neutron-capture elements in the metal poor halo stars CS 22892--052, HD 115444, HD 122563 and HD 126238. The elemental abundances in all four metal-poor stars are consistent with the solar r-process elemental distribution for the elements Z >/= 56. These results strongly suggest, at least for those e","authors_text":"B. Pfeiffer, Christopher Sneden, David Tytler, F.-K. Thielemann, John J. Cowan, K.-L. Kratz, Scott Burles, Timothy C. Beers","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1998-08-24T19:20:07Z","title":"R-Process Abundances and Chronometers in Metal-Poor Stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9808272","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":"sha256:371f662cbe48402c5bbc2e04a31aa88c001ecb7b351bed2bb7e353a26eb2d0ff","target":"record","created_at":"2026-07-04T16:06:57Z","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":"719ad32aceeafc473e28b96faa56caf8c6c48c9c445d1386befd5665b70c03ed","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-08-24T19:20:07Z","title_canon_sha256":"8365475c125871af5857b041b457032fbcaf7cfe1bc6d5bf771062ab3752a6dd"},"schema_version":"1.0","source":{"id":"astro-ph/9808272","kind":"arxiv","version":2}},"canonical_sha256":"ae15478d0baf98abd65a22c818ab4bcca1929cbaef929b4a4994d05ea613b90d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae15478d0baf98abd65a22c818ab4bcca1929cbaef929b4a4994d05ea613b90d","first_computed_at":"2026-07-04T16:06:57.562370Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:06:57.562370Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xjpkrB9xeiccg1AlFnvG350k4XPZ0FDjMmGXOimmtMrEvGZGVY3Prwdfgijhe9q/1SneKqw4ZnqWxkupBYU8Bw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:06:57.562783Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9808272","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:371f662cbe48402c5bbc2e04a31aa88c001ecb7b351bed2bb7e353a26eb2d0ff","sha256:5deac5be65cbc9951750cd42e5f15a034e0c09d2db1eece69d0faa547b33d190"],"state_sha256":"b8d42101a5be223ef1d1e76e463bd647123f92ba06e445cd218b15b48884e4b2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3MGimrZaCyrgPcUacZYkWE/YtOHdG2KTJhsvzz8ZiXTu2xZ0DfzYPjNxVotxMVsf6J6dSxK0V4YRJ0HnkYtkCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T16:21:12.632287Z","bundle_sha256":"44cfecb9aef44fbf0dcd5a64241f979b70dca02d9bd5c9cfa9be3218e63583cc"}}