{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:US4EOMB6OOFXPLLIZ22CTJES2R","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":"d97986bb96deca7f8b7e63541bbaf2338904a957fa314fe3e3f2b891854ca665","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-02T18:39:18Z","title_canon_sha256":"608738a82b60a6eb23b1cf2f8d248a8639144885341b3d6ba52ff42c52c6bd3f"},"schema_version":"1.0","source":{"id":"1904.01615","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.01615","created_at":"2026-07-04T23:59:48Z"},{"alias_kind":"arxiv_version","alias_value":"1904.01615v2","created_at":"2026-07-04T23:59:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.01615","created_at":"2026-07-04T23:59:48Z"},{"alias_kind":"pith_short_12","alias_value":"US4EOMB6OOFX","created_at":"2026-07-04T23:59:48Z"},{"alias_kind":"pith_short_16","alias_value":"US4EOMB6OOFXPLLI","created_at":"2026-07-04T23:59:48Z"},{"alias_kind":"pith_short_8","alias_value":"US4EOMB6","created_at":"2026-07-04T23:59:48Z"}],"graph_snapshots":[{"event_id":"sha256:bcd2ca971fefc675d438d8c7265826476b24d4c6ee5dec3890c7d6e8ba0c67eb","target":"graph","created_at":"2026-07-04T23:59:48Z","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/1904.01615/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ultraviolet (UV) observations of local star-forming galaxies have begun to establish an empirical baseline for interpreting the rest-UV spectra of reionization-era galaxies. However, existing high-ionization emission line measurements at $z>6$ ($\\mathrm{W_{C IV, 0}} \\gtrsim 20$ {\\AA}) are uniformly stronger than observed locally ($\\mathrm{W_{C IV, 0}} \\lesssim 2$ {\\AA}), likely due to the relatively high metallicities ($Z/Z_\\odot > 0.1$) typically probed by UV surveys of nearby galaxies. We present new HST/COS spectra of six nearby ($z<0.01$) extremely metal-poor galaxies (XMPs, $Z/Z_\\odot \\le","authors_text":"Alba Vidal Garc\\'ia, Daniel P. Stark, Jacopo Chevallard, Peter Senchyna, St\\'ephane Charlot, Tucker Jones","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-02T18:39:18Z","title":"Extremely metal-poor galaxies with HST/COS: laboratories for models of low-metallicity massive stars and high-redshift galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.01615","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":"sha256:7f01f07b7acce74db784089ed4a608c9673b0166de8381170d9a65276b38a392","target":"record","created_at":"2026-07-04T23:59:48Z","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":"d97986bb96deca7f8b7e63541bbaf2338904a957fa314fe3e3f2b891854ca665","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-02T18:39:18Z","title_canon_sha256":"608738a82b60a6eb23b1cf2f8d248a8639144885341b3d6ba52ff42c52c6bd3f"},"schema_version":"1.0","source":{"id":"1904.01615","kind":"arxiv","version":2}},"canonical_sha256":"a4b847303e738b77ad68ceb429a492d46eaeacd869f6abc18e74593484858e03","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a4b847303e738b77ad68ceb429a492d46eaeacd869f6abc18e74593484858e03","first_computed_at":"2026-07-04T23:59:48.813524Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:59:48.813524Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AW3j2s5ryJoxJFjQK4gDc7ZKiNzICcvCRjbM3gZ4pWf1IMfG4uPlr93FB+n6t5+Ejd7D9FnjsXewsiIXeDiKAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T23:59:48.813985Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.01615","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f01f07b7acce74db784089ed4a608c9673b0166de8381170d9a65276b38a392","sha256:bcd2ca971fefc675d438d8c7265826476b24d4c6ee5dec3890c7d6e8ba0c67eb"],"state_sha256":"54eab3e511af809381fb4639345c7e2a12633f87f1b444a10c630d686e67e306"}