{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:7AHJSDW3OS2NY3ZKFNHGK7NVQM","short_pith_number":"pith:7AHJSDW3","canonical_record":{"source":{"id":"2308.11610","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-08-22T17:55:02Z","cross_cats_sorted":[],"title_canon_sha256":"46e39869ba2fa455550b80a24620f95e56bf93c2b470189fab780be890899a38","abstract_canon_sha256":"75530dd889dce92efe04ac144eadb5ebb4f4902196fbaf6a6fb8229bf7e93682"},"schema_version":"1.0"},"canonical_sha256":"f80e990edb74b4dc6f2a2b4e657db58338bfc47e869a0849a0ec034af916b486","source":{"kind":"arxiv","id":"2308.11610","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.11610","created_at":"2026-07-05T07:01:04Z"},{"alias_kind":"arxiv_version","alias_value":"2308.11610v4","created_at":"2026-07-05T07:01:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.11610","created_at":"2026-07-05T07:01:04Z"},{"alias_kind":"pith_short_12","alias_value":"7AHJSDW3OS2N","created_at":"2026-07-05T07:01:04Z"},{"alias_kind":"pith_short_16","alias_value":"7AHJSDW3OS2NY3ZK","created_at":"2026-07-05T07:01:04Z"},{"alias_kind":"pith_short_8","alias_value":"7AHJSDW3","created_at":"2026-07-05T07:01:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:7AHJSDW3OS2NY3ZKFNHGK7NVQM","target":"record","payload":{"canonical_record":{"source":{"id":"2308.11610","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-08-22T17:55:02Z","cross_cats_sorted":[],"title_canon_sha256":"46e39869ba2fa455550b80a24620f95e56bf93c2b470189fab780be890899a38","abstract_canon_sha256":"75530dd889dce92efe04ac144eadb5ebb4f4902196fbaf6a6fb8229bf7e93682"},"schema_version":"1.0"},"canonical_sha256":"f80e990edb74b4dc6f2a2b4e657db58338bfc47e869a0849a0ec034af916b486","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:01:04.916467Z","signature_b64":"iLOzs7g0d93nsMGbpkYBIDS0nQg62Pw79Zhp2u2j7MAZ5FeBA+65sLFQPRUxNTJDuFNOiVfu46YG+a8zY+ZzBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f80e990edb74b4dc6f2a2b4e657db58338bfc47e869a0849a0ec034af916b486","last_reissued_at":"2026-07-05T07:01:04.915981Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:01:04.915981Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.11610","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:01:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UGZ0RZNfTI6RWr15nDYvIqqrv9GXY6H8yJ1M2o+Nnu6u6YkTtxQ1W42JYwZgbvxTfeNieugQHl3qeiUpWf7uCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:05:15.648133Z"},"content_sha256":"74bb5c3bef2152596297a4d1311deb5823b28b46bcc92821b832f1aa27afc3c3","schema_version":"1.0","event_id":"sha256:74bb5c3bef2152596297a4d1311deb5823b28b46bcc92821b832f1aa27afc3c3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:7AHJSDW3OS2NY3ZKFNHGK7NVQM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"UNCOVER: A NIRSpec Identification of a Broad Line AGN at z = 8.50","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Adi Zitrin, Andy D. Goulding, Anna de Graaff, Bingjie Wang, Christina C. Williams, Danilo Marchesini, David J. Setton, Erica J. Nelson, Gabriel Brammer, Hakim Atek, Iryna Chemerynska, Ivo Labbe, Jenny E. Greene, Joel Leja, John R. Weaver, Karina I. Caputi, Katherine E. Whitaker, Lukas J. Furtak, Mauro Stefanon, Pascal Oesch, Pratika Dayal, Rachel Bezanson, Renske Smit, Richard Pan, Robert Feldmann, Sam E. Cutler, Sedona H. Price, Seiji Fujimoto, Themiya Nanayakkara, Tim B. Miller, Vasily Kokorev, Yoshinobu Fudamoto","submitted_at":"2023-08-22T17:55:02Z","abstract_excerpt":"Deep observations with JWST have revealed an emerging population of red point-like sources that could provide a link between the postulated supermassive black hole seeds and observed quasars. In this work we present a JWST/NIRSpec spectrum from the JWST Cycle 1 UNCOVER Treasury survey, of a massive accreting black hole at $z=8.50$, displaying a clear broad-line component as inferred from the H$\\beta$ line with FWHM = $3439\\pm413$ km s$^{-1}$, typical of the broad line region of an active galactic nucleus (AGN). The AGN nature of this object is further supported by high ionization, as inferred "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.11610","kind":"arxiv","version":4},"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/2308.11610/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":"2026-07-05T07:01:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7ouB0nKSuEaYLDxwhCjvdcusDrvny7OWL60l+gP2P3q6Eig+YciD3v6rW41lXgmAch0PAgrSzgMDSXwCFohSCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:05:15.648647Z"},"content_sha256":"36dee175e12c4f8baa971357944e3df9dc3d8c65539ffd328d234ff16a16d085","schema_version":"1.0","event_id":"sha256:36dee175e12c4f8baa971357944e3df9dc3d8c65539ffd328d234ff16a16d085"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7AHJSDW3OS2NY3ZKFNHGK7NVQM/bundle.json","state_url":"https://pith.science/pith/7AHJSDW3OS2NY3ZKFNHGK7NVQM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7AHJSDW3OS2NY3ZKFNHGK7NVQM/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":"2026-08-03T17:05:15Z","links":{"resolver":"https://pith.science/pith/7AHJSDW3OS2NY3ZKFNHGK7NVQM","bundle":"https://pith.science/pith/7AHJSDW3OS2NY3ZKFNHGK7NVQM/bundle.json","state":"https://pith.science/pith/7AHJSDW3OS2NY3ZKFNHGK7NVQM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7AHJSDW3OS2NY3ZKFNHGK7NVQM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:7AHJSDW3OS2NY3ZKFNHGK7NVQM","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":"75530dd889dce92efe04ac144eadb5ebb4f4902196fbaf6a6fb8229bf7e93682","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-08-22T17:55:02Z","title_canon_sha256":"46e39869ba2fa455550b80a24620f95e56bf93c2b470189fab780be890899a38"},"schema_version":"1.0","source":{"id":"2308.11610","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.11610","created_at":"2026-07-05T07:01:04Z"},{"alias_kind":"arxiv_version","alias_value":"2308.11610v4","created_at":"2026-07-05T07:01:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.11610","created_at":"2026-07-05T07:01:04Z"},{"alias_kind":"pith_short_12","alias_value":"7AHJSDW3OS2N","created_at":"2026-07-05T07:01:04Z"},{"alias_kind":"pith_short_16","alias_value":"7AHJSDW3OS2NY3ZK","created_at":"2026-07-05T07:01:04Z"},{"alias_kind":"pith_short_8","alias_value":"7AHJSDW3","created_at":"2026-07-05T07:01:04Z"}],"graph_snapshots":[{"event_id":"sha256:36dee175e12c4f8baa971357944e3df9dc3d8c65539ffd328d234ff16a16d085","target":"graph","created_at":"2026-07-05T07:01:04Z","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/2308.11610/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Deep observations with JWST have revealed an emerging population of red point-like sources that could provide a link between the postulated supermassive black hole seeds and observed quasars. In this work we present a JWST/NIRSpec spectrum from the JWST Cycle 1 UNCOVER Treasury survey, of a massive accreting black hole at $z=8.50$, displaying a clear broad-line component as inferred from the H$\\beta$ line with FWHM = $3439\\pm413$ km s$^{-1}$, typical of the broad line region of an active galactic nucleus (AGN). The AGN nature of this object is further supported by high ionization, as inferred ","authors_text":"Adi Zitrin, Andy D. Goulding, Anna de Graaff, Bingjie Wang, Christina C. Williams, Danilo Marchesini, David J. Setton, Erica J. Nelson, Gabriel Brammer, Hakim Atek, Iryna Chemerynska, Ivo Labbe, Jenny E. Greene, Joel Leja, John R. Weaver, Karina I. Caputi, Katherine E. Whitaker, Lukas J. Furtak, Mauro Stefanon, Pascal Oesch, Pratika Dayal, Rachel Bezanson, Renske Smit, Richard Pan, Robert Feldmann, Sam E. Cutler, Sedona H. Price, Seiji Fujimoto, Themiya Nanayakkara, Tim B. Miller, Vasily Kokorev, Yoshinobu Fudamoto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-08-22T17:55:02Z","title":"UNCOVER: A NIRSpec Identification of a Broad Line AGN at z = 8.50"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.11610","kind":"arxiv","version":4},"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":"sha256:74bb5c3bef2152596297a4d1311deb5823b28b46bcc92821b832f1aa27afc3c3","target":"record","created_at":"2026-07-05T07:01:04Z","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":"75530dd889dce92efe04ac144eadb5ebb4f4902196fbaf6a6fb8229bf7e93682","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-08-22T17:55:02Z","title_canon_sha256":"46e39869ba2fa455550b80a24620f95e56bf93c2b470189fab780be890899a38"},"schema_version":"1.0","source":{"id":"2308.11610","kind":"arxiv","version":4}},"canonical_sha256":"f80e990edb74b4dc6f2a2b4e657db58338bfc47e869a0849a0ec034af916b486","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f80e990edb74b4dc6f2a2b4e657db58338bfc47e869a0849a0ec034af916b486","first_computed_at":"2026-07-05T07:01:04.915981Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:01:04.915981Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iLOzs7g0d93nsMGbpkYBIDS0nQg62Pw79Zhp2u2j7MAZ5FeBA+65sLFQPRUxNTJDuFNOiVfu46YG+a8zY+ZzBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:01:04.916467Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.11610","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:74bb5c3bef2152596297a4d1311deb5823b28b46bcc92821b832f1aa27afc3c3","sha256:36dee175e12c4f8baa971357944e3df9dc3d8c65539ffd328d234ff16a16d085"],"state_sha256":"efafd04eeb4bdaa205b96cf652570c3087d4d48705e759e0d019b3dcbaa13f38"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SVNF6ymBVBgZRgmagZdVQ9TEw0WmXOXxEQUj+s70jrLtQ8rnLwJ6h0G7FY73a91Ro5crrK4DO4BglPHMIlQ6BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T17:05:15.652975Z","bundle_sha256":"100c1b130d1150638182d4c39a8044ffe9ac128521b9c435f7b9da832b99e41f"}}