{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:2GXQENRU7DGOGQZ54MNVDKEPIN","short_pith_number":"pith:2GXQENRU","canonical_record":{"source":{"id":"2301.03550","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-09T18:01:00Z","cross_cats_sorted":[],"title_canon_sha256":"d68dbb26f5f1e8e07ee3957b89bdbeaf6a367edcb13a26c213cc76fa348f17f2","abstract_canon_sha256":"3a501ac8a6f22edf0485a52df4d435414b1f46092291d49f09eead9dcea02dd6"},"schema_version":"1.0"},"canonical_sha256":"d1af023634f8cce3433de31b51a88f434b8dcd7262b6f78a39f8ebfd38136dac","source":{"kind":"arxiv","id":"2301.03550","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.03550","created_at":"2026-07-05T05:31:36Z"},{"alias_kind":"arxiv_version","alias_value":"2301.03550v1","created_at":"2026-07-05T05:31:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.03550","created_at":"2026-07-05T05:31:36Z"},{"alias_kind":"pith_short_12","alias_value":"2GXQENRU7DGO","created_at":"2026-07-05T05:31:36Z"},{"alias_kind":"pith_short_16","alias_value":"2GXQENRU7DGOGQZ5","created_at":"2026-07-05T05:31:36Z"},{"alias_kind":"pith_short_8","alias_value":"2GXQENRU","created_at":"2026-07-05T05:31:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:2GXQENRU7DGOGQZ54MNVDKEPIN","target":"record","payload":{"canonical_record":{"source":{"id":"2301.03550","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-09T18:01:00Z","cross_cats_sorted":[],"title_canon_sha256":"d68dbb26f5f1e8e07ee3957b89bdbeaf6a367edcb13a26c213cc76fa348f17f2","abstract_canon_sha256":"3a501ac8a6f22edf0485a52df4d435414b1f46092291d49f09eead9dcea02dd6"},"schema_version":"1.0"},"canonical_sha256":"d1af023634f8cce3433de31b51a88f434b8dcd7262b6f78a39f8ebfd38136dac","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:31:36.906332Z","signature_b64":"3cwSw21VyrOSquTykkaSgomSje0DATcHRNMETb983FmlsiVj2a9AuoRkR31I/lC7jot2IVYMdmIvPsMYmi4ADg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d1af023634f8cce3433de31b51a88f434b8dcd7262b6f78a39f8ebfd38136dac","last_reissued_at":"2026-07-05T05:31:36.905824Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:31:36.905824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2301.03550","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:31:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ym5I/rEIhso2f2K8ti4RVy2HU4+P5sPbEw9PxJwucPoMsw8S4HEU9ChUcsGrY7l3hKjR+vl7cKPtFLALLmGqAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T13:44:35.569492Z"},"content_sha256":"282faa8f9fbc1705533531756bb4a1ec5c58b10db24e80380c0468c4f942a574","schema_version":"1.0","event_id":"sha256:282faa8f9fbc1705533531756bb4a1ec5c58b10db24e80380c0468c4f942a574"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:2GXQENRU7DGOGQZ54MNVDKEPIN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hot white dwarfs and pre-white dwarfs discovered with SALT","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. Miszalski, C. S. Jeffery, D. Kilkenny, E. J. Snowdon, I. Monageng, K. Werner","submitted_at":"2023-01-09T18:01:00Z","abstract_excerpt":"The Southern African Large Telescope (SALT) survey of helium-rich hot subdwarfs aims to explore evolutionary pathways amongst groups of highly-evolved stars. The selection criteria mean that several hot white dwarfs and related objects have also been included. This paper reports the discovery and analysis of eight new very hot white dwarf and pre-white dwarf stars with effective temperatures exceeding 100,000 K. They include two PG1159 stars, one DO white dwarf, three O(He) and two O(H) stars. One of the O(H) stars is the central star of a newly-discovered planetary nebula, the other is the ho"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.03550","kind":"arxiv","version":1},"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/2301.03550/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":"2026-07-05T05:31:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6IukEi64PU30RG4H53jnRCgeS6EzeIvRMb4R4N2fVuOpwD+/mWViYqOvQGr4MWlOY8y7tdBNUK5oivHxKL85Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T13:44:35.569936Z"},"content_sha256":"1765a07daacad82f0213baefd6d32d30604edbdf973d04fb4c37ad245f5c3fc6","schema_version":"1.0","event_id":"sha256:1765a07daacad82f0213baefd6d32d30604edbdf973d04fb4c37ad245f5c3fc6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2GXQENRU7DGOGQZ54MNVDKEPIN/bundle.json","state_url":"https://pith.science/pith/2GXQENRU7DGOGQZ54MNVDKEPIN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2GXQENRU7DGOGQZ54MNVDKEPIN/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":"2026-07-31T13:44:35Z","links":{"resolver":"https://pith.science/pith/2GXQENRU7DGOGQZ54MNVDKEPIN","bundle":"https://pith.science/pith/2GXQENRU7DGOGQZ54MNVDKEPIN/bundle.json","state":"https://pith.science/pith/2GXQENRU7DGOGQZ54MNVDKEPIN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2GXQENRU7DGOGQZ54MNVDKEPIN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:2GXQENRU7DGOGQZ54MNVDKEPIN","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":"3a501ac8a6f22edf0485a52df4d435414b1f46092291d49f09eead9dcea02dd6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-09T18:01:00Z","title_canon_sha256":"d68dbb26f5f1e8e07ee3957b89bdbeaf6a367edcb13a26c213cc76fa348f17f2"},"schema_version":"1.0","source":{"id":"2301.03550","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.03550","created_at":"2026-07-05T05:31:36Z"},{"alias_kind":"arxiv_version","alias_value":"2301.03550v1","created_at":"2026-07-05T05:31:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.03550","created_at":"2026-07-05T05:31:36Z"},{"alias_kind":"pith_short_12","alias_value":"2GXQENRU7DGO","created_at":"2026-07-05T05:31:36Z"},{"alias_kind":"pith_short_16","alias_value":"2GXQENRU7DGOGQZ5","created_at":"2026-07-05T05:31:36Z"},{"alias_kind":"pith_short_8","alias_value":"2GXQENRU","created_at":"2026-07-05T05:31:36Z"}],"graph_snapshots":[{"event_id":"sha256:1765a07daacad82f0213baefd6d32d30604edbdf973d04fb4c37ad245f5c3fc6","target":"graph","created_at":"2026-07-05T05:31:36Z","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/2301.03550/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Southern African Large Telescope (SALT) survey of helium-rich hot subdwarfs aims to explore evolutionary pathways amongst groups of highly-evolved stars. The selection criteria mean that several hot white dwarfs and related objects have also been included. This paper reports the discovery and analysis of eight new very hot white dwarf and pre-white dwarf stars with effective temperatures exceeding 100,000 K. They include two PG1159 stars, one DO white dwarf, three O(He) and two O(H) stars. One of the O(H) stars is the central star of a newly-discovered planetary nebula, the other is the ho","authors_text":"B. Miszalski, C. S. Jeffery, D. Kilkenny, E. J. Snowdon, I. Monageng, K. Werner","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-09T18:01:00Z","title":"Hot white dwarfs and pre-white dwarfs discovered with SALT"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.03550","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":"sha256:282faa8f9fbc1705533531756bb4a1ec5c58b10db24e80380c0468c4f942a574","target":"record","created_at":"2026-07-05T05:31:36Z","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":"3a501ac8a6f22edf0485a52df4d435414b1f46092291d49f09eead9dcea02dd6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-01-09T18:01:00Z","title_canon_sha256":"d68dbb26f5f1e8e07ee3957b89bdbeaf6a367edcb13a26c213cc76fa348f17f2"},"schema_version":"1.0","source":{"id":"2301.03550","kind":"arxiv","version":1}},"canonical_sha256":"d1af023634f8cce3433de31b51a88f434b8dcd7262b6f78a39f8ebfd38136dac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d1af023634f8cce3433de31b51a88f434b8dcd7262b6f78a39f8ebfd38136dac","first_computed_at":"2026-07-05T05:31:36.905824Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:31:36.905824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3cwSw21VyrOSquTykkaSgomSje0DATcHRNMETb983FmlsiVj2a9AuoRkR31I/lC7jot2IVYMdmIvPsMYmi4ADg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:31:36.906332Z","signed_message":"canonical_sha256_bytes"},"source_id":"2301.03550","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:282faa8f9fbc1705533531756bb4a1ec5c58b10db24e80380c0468c4f942a574","sha256:1765a07daacad82f0213baefd6d32d30604edbdf973d04fb4c37ad245f5c3fc6"],"state_sha256":"de7f5b8b728b8733ed2d64f3776f79c80cfa71b7bcefe280e2e18dc40cd35667"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3+wSdTwyOMLaORTeoPvbYVvqyTg3mAjM8pDv/DWlrGZGhBsNddy52ToYZJ2u10wDZ6d8j+WtJ7NFBYCin+OGAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T13:44:35.572145Z","bundle_sha256":"d9bf34942590dae7a20372adaaae50f67f038ab797580de525bcb03a445f3847"}}