{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:NCM3K6F73DJOQQAIROUOYOB5O5","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":"954983f57a1038c5a7e002fd84b9727cf22852fdf2a774c6f6e51e879a40c367","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-14T18:00:00Z","title_canon_sha256":"8efc2f26c9fcacbc6014fbbd78c941a09e06e96aaf00cfc0e9467b01577ebd6a"},"schema_version":"1.0","source":{"id":"2504.10573","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.10573","created_at":"2026-07-05T11:19:06Z"},{"alias_kind":"arxiv_version","alias_value":"2504.10573v1","created_at":"2026-07-05T11:19:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.10573","created_at":"2026-07-05T11:19:06Z"},{"alias_kind":"pith_short_12","alias_value":"NCM3K6F73DJO","created_at":"2026-07-05T11:19:06Z"},{"alias_kind":"pith_short_16","alias_value":"NCM3K6F73DJOQQAI","created_at":"2026-07-05T11:19:06Z"},{"alias_kind":"pith_short_8","alias_value":"NCM3K6F7","created_at":"2026-07-05T11:19:06Z"}],"graph_snapshots":[{"event_id":"sha256:b1108b5b12dda6f16fc5ce345f04a6fe17d9a4454ba12a738422b7dc878b5508","target":"graph","created_at":"2026-07-05T11:19:06Z","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/2504.10573/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Radio-bright, jetted quasars at $z>5$ serve as unique laboratories for studying supermassive black hole activity in the early Universe. In this work, we present a sample of high-$z$ jetted quasars selected from the combination of the radio Rapid ASKAP Continuum Survey (RACS) with deep wide-area optical/near-infrared surveys. From this cross-match we selected 45 new high-$z$ radio quasar candidates with S$_{888MHz}>1$ mJy and mag$z<21.3$ over an area of 16000deg$^2$. Using spectroscopic observations, we confirmed the high-$z$ nature of 24 new quasars, 13 at $4.5<z<5$ and 11 at $z>5$. If we also","authors_text":"A. Caccianiga, A. L\\'opez-S\\'anchez, A. Moretti, A. Rossi, B. Arsioli, C. Reynolds, C. Spingola, C. Vignali, D. Dallacasa, F. Rigamonti, F. Tavecchio, I. Matute, J. Afonso, J. K. Leung, J. W. Broderick, L. Ighina, N. Seymour, P. Severgnini, R. Della Ceca, S. Bisogni, T. An, T. Connor, Y. Liu, Z. Wang","cross_cats":["astro-ph.HE"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-14T18:00:00Z","title":"High-$z$ radio Quasars in RACS I: Selection, identification, and multi-wavelength properties"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.10573","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":"sha256:24673aea014546e42f86fb9113fc21e625d167c1f7ea6a9e978516dff4428e78","target":"record","created_at":"2026-07-05T11:19:06Z","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":"954983f57a1038c5a7e002fd84b9727cf22852fdf2a774c6f6e51e879a40c367","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-14T18:00:00Z","title_canon_sha256":"8efc2f26c9fcacbc6014fbbd78c941a09e06e96aaf00cfc0e9467b01577ebd6a"},"schema_version":"1.0","source":{"id":"2504.10573","kind":"arxiv","version":1}},"canonical_sha256":"6899b578bfd8d2e840088ba8ec383d775a9b6d303c7f9314c29d7c9cdf13918e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6899b578bfd8d2e840088ba8ec383d775a9b6d303c7f9314c29d7c9cdf13918e","first_computed_at":"2026-07-05T11:19:06.057790Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:19:06.057790Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ii4h3x2EiFfqqpDyLIn5ID1Ya6XvHWN225kpbR9CqBDeaBYVmnq4mBgSdJuAcuODCn8QLTbz3RD26aUI/e17Ag==","signature_status":"signed_v1","signed_at":"2026-07-05T11:19:06.058249Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.10573","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:24673aea014546e42f86fb9113fc21e625d167c1f7ea6a9e978516dff4428e78","sha256:b1108b5b12dda6f16fc5ce345f04a6fe17d9a4454ba12a738422b7dc878b5508"],"state_sha256":"28affda5a832670f37e0a79b87252a90f3daa62da966510c120b199520fea2e4"}