{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:7YSXJIYQEYK7CRMAWSO4MRQCUN","short_pith_number":"pith:7YSXJIYQ","schema_version":"1.0","canonical_sha256":"fe2574a3102615f14580b49dc64602a35ff38dbd0441f2978da006dc521782ec","source":{"kind":"arxiv","id":"2308.02750","version":3},"attestation_state":"computed","paper":{"title":"UNCOVER: The growth of the first massive black holes from JWST/NIRSpec -- spectroscopic redshift confirmation of an X-ray luminous AGN at z=10.1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Adi Zitrin, Akos Bogdan, Andy D. Goulding, Bingjie Wang, Casey Papovich, Danilo Marchesini, David J. Setton, Erica Nelson, Gabriel Brammer, Gourav Khullar, Hakim Atek, Iryna Chemerynska, Ivo Labbe, Jenny E. Greene, Joel Leja, John R. Weaver, Katherine E. Whitaker, Lukas J. Furtak, Pascal A. Oesch, Pieter van Dokkum, Pratika Dayal, Priyamvada Natarajan, Rachel Bezanson, Richard Pan, Sam E. Cutler, Sedona H. Price, Seiji Fujimoto, Tim B. Miller, Vasily Kokorev, Yoshinobu Fudamoto","submitted_at":"2023-08-05T00:05:44Z","abstract_excerpt":"The James Webb Space Telescope is now detecting early black holes (BHs) as they transition from \"seeds\" to supermassive BHs. Recently Bogdan et al. (2023) reported the detection of an X-ray luminous supermassive BH, UHZ-1, with a photometric redshift at $z > 10$. Such an extreme source at this very high redshift provides new insights on seeding and growth models for BHs given the short time available for formation and growth. Harnessing the exquisite sensitivity of JWST/NIRSpec, here we report the spectroscopic confirmation of UHZ-1 at $z = 10.073 \\pm 0.002$. We find that the NIRSpec/Prism spe"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2308.02750","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-08-05T00:05:44Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"cc195208623ca86466049197cfa1a0ad8f45042c3223146b9bdb050fb5e7736f","abstract_canon_sha256":"e23d204d93f55f7edb53d32ff77a6d5ebcba1d53d2dcb5fe0adbb9bef6fa8f58"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:52:06.674090Z","signature_b64":"tWtRjCcsO0evW/O6vbwOhgwh3gfCLceYQyzo8IJV54+MNsIxViInriz0wK+0rSg+58872is4JcJL1ngQUfVCAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe2574a3102615f14580b49dc64602a35ff38dbd0441f2978da006dc521782ec","last_reissued_at":"2026-07-05T06:52:06.673612Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:52:06.673612Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"UNCOVER: The growth of the first massive black holes from JWST/NIRSpec -- spectroscopic redshift confirmation of an X-ray luminous AGN at z=10.1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Adi Zitrin, Akos Bogdan, Andy D. Goulding, Bingjie Wang, Casey Papovich, Danilo Marchesini, David J. Setton, Erica Nelson, Gabriel Brammer, Gourav Khullar, Hakim Atek, Iryna Chemerynska, Ivo Labbe, Jenny E. Greene, Joel Leja, John R. Weaver, Katherine E. Whitaker, Lukas J. Furtak, Pascal A. Oesch, Pieter van Dokkum, Pratika Dayal, Priyamvada Natarajan, Rachel Bezanson, Richard Pan, Sam E. Cutler, Sedona H. Price, Seiji Fujimoto, Tim B. Miller, Vasily Kokorev, Yoshinobu Fudamoto","submitted_at":"2023-08-05T00:05:44Z","abstract_excerpt":"The James Webb Space Telescope is now detecting early black holes (BHs) as they transition from \"seeds\" to supermassive BHs. Recently Bogdan et al. (2023) reported the detection of an X-ray luminous supermassive BH, UHZ-1, with a photometric redshift at $z > 10$. Such an extreme source at this very high redshift provides new insights on seeding and growth models for BHs given the short time available for formation and growth. Harnessing the exquisite sensitivity of JWST/NIRSpec, here we report the spectroscopic confirmation of UHZ-1 at $z = 10.073 \\pm 0.002$. We find that the NIRSpec/Prism spe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.02750","kind":"arxiv","version":3},"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/2308.02750/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2308.02750","created_at":"2026-07-05T06:52:06.673662+00:00"},{"alias_kind":"arxiv_version","alias_value":"2308.02750v3","created_at":"2026-07-05T06:52:06.673662+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.02750","created_at":"2026-07-05T06:52:06.673662+00:00"},{"alias_kind":"pith_short_12","alias_value":"7YSXJIYQEYK7","created_at":"2026-07-05T06:52:06.673662+00:00"},{"alias_kind":"pith_short_16","alias_value":"7YSXJIYQEYK7CRMA","created_at":"2026-07-05T06:52:06.673662+00:00"},{"alias_kind":"pith_short_8","alias_value":"7YSXJIYQ","created_at":"2026-07-05T06:52:06.673662+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":5,"internal_anchor_count":2,"sample":[{"citing_arxiv_id":"2607.07793","citing_title":"Tracing black hole and galaxy growth across environments since cosmic noon","ref_index":69,"is_internal_anchor":true},{"citing_arxiv_id":"2607.08749","citing_title":"Deep Spectroscopic Follow-Up of Maisie's Galaxy -- A Typical Galaxy in the Early Universe","ref_index":81,"is_internal_anchor":true},{"citing_arxiv_id":"2606.20964","citing_title":"Loss-Cone-Limited Dark Matter Accretion onto Early Black Hole Seeds","ref_index":17,"is_internal_anchor":false},{"citing_arxiv_id":"2606.03414","citing_title":"Hidden-sector accretion and warped black-string seeds for high-redshift supermassive black holes","ref_index":13,"is_internal_anchor":false},{"citing_arxiv_id":"2601.17117","citing_title":"Non-Equilibrium Relativistic Core Collapse of Self-Interacting Dark Matter Halos -- Limits On Seed Black Hole Mass","ref_index":28,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/7YSXJIYQEYK7CRMAWSO4MRQCUN","json":"https://pith.science/pith/7YSXJIYQEYK7CRMAWSO4MRQCUN.json","graph_json":"https://pith.science/api/pith-number/7YSXJIYQEYK7CRMAWSO4MRQCUN/graph.json","events_json":"https://pith.science/api/pith-number/7YSXJIYQEYK7CRMAWSO4MRQCUN/events.json","paper":"https://pith.science/paper/7YSXJIYQ"},"agent_actions":{"view_html":"https://pith.science/pith/7YSXJIYQEYK7CRMAWSO4MRQCUN","download_json":"https://pith.science/pith/7YSXJIYQEYK7CRMAWSO4MRQCUN.json","view_paper":"https://pith.science/paper/7YSXJIYQ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2308.02750&json=true","fetch_graph":"https://pith.science/api/pith-number/7YSXJIYQEYK7CRMAWSO4MRQCUN/graph.json","fetch_events":"https://pith.science/api/pith-number/7YSXJIYQEYK7CRMAWSO4MRQCUN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7YSXJIYQEYK7CRMAWSO4MRQCUN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7YSXJIYQEYK7CRMAWSO4MRQCUN/action/storage_attestation","attest_author":"https://pith.science/pith/7YSXJIYQEYK7CRMAWSO4MRQCUN/action/author_attestation","sign_citation":"https://pith.science/pith/7YSXJIYQEYK7CRMAWSO4MRQCUN/action/citation_signature","submit_replication":"https://pith.science/pith/7YSXJIYQEYK7CRMAWSO4MRQCUN/action/replication_record"}},"created_at":"2026-07-05T06:52:06.673662+00:00","updated_at":"2026-07-05T06:52:06.673662+00:00"}