{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:2T224MYCN73QDVSHFFTK3IAPB3","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":"b3d7a95afe7b86c12862804e07c458aa95170b9567ec0373442ac026431b0aee","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-05-20T22:06:28Z","title_canon_sha256":"faf9f1e08d29e391e546016f7fa6a5d8c30e5a2e1997a91fc9e23c70a9f16b07"},"schema_version":"1.0","source":{"id":"2605.21772","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.21772","created_at":"2026-05-22T01:03:31Z"},{"alias_kind":"arxiv_version","alias_value":"2605.21772v1","created_at":"2026-05-22T01:03:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.21772","created_at":"2026-05-22T01:03:31Z"},{"alias_kind":"pith_short_12","alias_value":"2T224MYCN73Q","created_at":"2026-05-22T01:03:31Z"},{"alias_kind":"pith_short_16","alias_value":"2T224MYCN73QDVSH","created_at":"2026-05-22T01:03:31Z"},{"alias_kind":"pith_short_8","alias_value":"2T224MYC","created_at":"2026-05-22T01:03:31Z"}],"graph_snapshots":[{"event_id":"sha256:e806822562376d58ca08ecf60bb73a8eaef5eab9f008306729578f2da65a3c17","target":"graph","created_at":"2026-05-22T01:03:31Z","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/2605.21772/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Most hot subdwarfs (sdO/B) are low-mass core-helium-burning stars formed through binary interaction. A subgroup of intermediate He-rich sdOBs shows extreme heavy-metal (Z>30) enrichments exceeding $10^4$ times solar, especially in Zr or Pb. We analyse the first ultraviolet spectra of the \"heavy metal\" subdwarfs LSIV-14 116 (Zr-rich) and EC22536-5304 (Pb-rich) to determine their abundance patterns and test nucleosynthesis models. Both stars show exceptionally rich heavy-element spectra dominated by ions in stages III-VI, many absent from standard line lists. We compiled literature energy levels","authors_text":"C. S. Jeffery, D. J. Dougan, H. Dupuis, J. Deprince, L. J. A. Scott, M. Dorsch, P. Quinet, S. Beauraind, S. Geier, T. Battich, U. Heber","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-05-20T22:06:28Z","title":"Evidence for neutron capture in heavy-metal hot subdwarfs: Far-UV spectroscopy of EC22536-5304 and LSIV-14 116"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.21772","kind":"arxiv","version":1},"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":"sha256:4e3cfea1dad18a99a7bb71c69302b448b39dd2167f27a45bde53eb2474515b21","target":"record","created_at":"2026-05-22T01:03:31Z","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":"b3d7a95afe7b86c12862804e07c458aa95170b9567ec0373442ac026431b0aee","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-05-20T22:06:28Z","title_canon_sha256":"faf9f1e08d29e391e546016f7fa6a5d8c30e5a2e1997a91fc9e23c70a9f16b07"},"schema_version":"1.0","source":{"id":"2605.21772","kind":"arxiv","version":1}},"canonical_sha256":"d4f5ae33026ff701d6472966ada00f0ed150880a8d5200536f2ef901d7e7a622","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d4f5ae33026ff701d6472966ada00f0ed150880a8d5200536f2ef901d7e7a622","first_computed_at":"2026-05-22T01:03:31.264745Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-22T01:03:31.264745Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zOIZKIwihzh0kGPucaVYSgTKg5IonKWxIOE3LgoGZ6TfU/PtJwkzrRNXrMkCUlatIRudT+7q3pa/GcKaTKG7BA==","signature_status":"signed_v1","signed_at":"2026-05-22T01:03:31.265199Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.21772","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e3cfea1dad18a99a7bb71c69302b448b39dd2167f27a45bde53eb2474515b21","sha256:e806822562376d58ca08ecf60bb73a8eaef5eab9f008306729578f2da65a3c17"],"state_sha256":"78982035322ec7a5ba15f6150b5768276c455993bd05e8803ea7cca91f9b15f9"}