{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:74RT65YFISM47RL7L44T4M75M6","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":"2b7b53aac57b3cface374679634cbbfca4594959640782a721929cd82d632cff","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-08T21:00:03Z","title_canon_sha256":"4bf1e08762826afce8d579ff6a8c8c9b509547f4476d3a03ced9d343b7af98b6"},"schema_version":"1.0","source":{"id":"1601.02019","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.02019","created_at":"2026-05-18T01:20:32Z"},{"alias_kind":"arxiv_version","alias_value":"1601.02019v2","created_at":"2026-05-18T01:20:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.02019","created_at":"2026-05-18T01:20:32Z"},{"alias_kind":"pith_short_12","alias_value":"74RT65YFISM4","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"74RT65YFISM47RL7","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"74RT65YF","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:37485954cd5fa0811e89af854d2066e000f0cd562ef1960f8c102c34071da905","target":"graph","created_at":"2026-05-18T01:20:32Z","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"},"paper":{"abstract_excerpt":"We investigated the prospects for systematic searches of white dwarfs at low Galactic latitudes, using the VLT Survey Telescope (VST) H$\\alpha$ Photometric Survey of the Galactic plane and Bulge (VPHAS+). We targeted 17 white dwarf candidates along sightlines of known open clusters, aiming to identify potential cluster members. We confirmed all the 17 white dwarf candidates from blue/optical spectroscopy, and we suggest five of them to be likely cluster members. We estimated progenitor ages and masses for the candidate cluster members, and compared our findings to those for other cluster white","authors_text":"A. Zijlstra, B. T. Gaensicke, D. Koester, D. Steeghs, G. Barentsen, H. J. Farnhill, J. E. Drew, J.J. Hermes, L. Guzman-Ramirez, M. Mohr-Smith, P.-E. Tremblay, P. J. Groot, Q. A. Parker, R. Napiwotzki, R. Raddi, S. Catalan","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-08T21:00:03Z","title":"A search for white dwarfs in the Galactic plane: the field and the open cluster population"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.02019","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":"sha256:13cb9ce9b5c23a0819b1dd1c3a7d2243861e1d110e3164383ae7a78ed17b6246","target":"record","created_at":"2026-05-18T01:20:32Z","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":"2b7b53aac57b3cface374679634cbbfca4594959640782a721929cd82d632cff","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-08T21:00:03Z","title_canon_sha256":"4bf1e08762826afce8d579ff6a8c8c9b509547f4476d3a03ced9d343b7af98b6"},"schema_version":"1.0","source":{"id":"1601.02019","kind":"arxiv","version":2}},"canonical_sha256":"ff233f77054499cfc57f5f393e33fd67b06b09b794f4b296b4f3214e56a40e8c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff233f77054499cfc57f5f393e33fd67b06b09b794f4b296b4f3214e56a40e8c","first_computed_at":"2026-05-18T01:20:32.310303Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:32.310303Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1bPj2npFNn3553VymctNAyb+X3VVIOKyNSieE2QoTEkw7tG2SAC4UsuV5CjbXnPfZPZNKAdOzmtUryHfHDa1Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:32.310764Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.02019","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:13cb9ce9b5c23a0819b1dd1c3a7d2243861e1d110e3164383ae7a78ed17b6246","sha256:37485954cd5fa0811e89af854d2066e000f0cd562ef1960f8c102c34071da905"],"state_sha256":"c59f83ac9eb35c5ad8d813ccab68de74fae4def7a1da6c0813faf20e2d5983ce"}