{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:GBZR4H3PFTTO3JQH4W43JNBLPX","short_pith_number":"pith:GBZR4H3P","canonical_record":{"source":{"id":"2306.00068","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-05-31T18:00:06Z","cross_cats_sorted":[],"title_canon_sha256":"585c59a26b3b68d4c68e1104a2e488e747e96eb6213729fdf58ae88453bd9301","abstract_canon_sha256":"59bb1fea3544d19cf9e947e297fccdcc3c1550281c197dbba7b332b16afe155e"},"schema_version":"1.0"},"canonical_sha256":"30731e1f6f2ce6eda607e5b9b4b42b7dc6765ab02f0a9928875743641132d0a6","source":{"kind":"arxiv","id":"2306.00068","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.00068","created_at":"2026-07-05T06:29:51Z"},{"alias_kind":"arxiv_version","alias_value":"2306.00068v1","created_at":"2026-07-05T06:29:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.00068","created_at":"2026-07-05T06:29:51Z"},{"alias_kind":"pith_short_12","alias_value":"GBZR4H3PFTTO","created_at":"2026-07-05T06:29:51Z"},{"alias_kind":"pith_short_16","alias_value":"GBZR4H3PFTTO3JQH","created_at":"2026-07-05T06:29:51Z"},{"alias_kind":"pith_short_8","alias_value":"GBZR4H3P","created_at":"2026-07-05T06:29:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:GBZR4H3PFTTO3JQH4W43JNBLPX","target":"record","payload":{"canonical_record":{"source":{"id":"2306.00068","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-05-31T18:00:06Z","cross_cats_sorted":[],"title_canon_sha256":"585c59a26b3b68d4c68e1104a2e488e747e96eb6213729fdf58ae88453bd9301","abstract_canon_sha256":"59bb1fea3544d19cf9e947e297fccdcc3c1550281c197dbba7b332b16afe155e"},"schema_version":"1.0"},"canonical_sha256":"30731e1f6f2ce6eda607e5b9b4b42b7dc6765ab02f0a9928875743641132d0a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:29:51.665774Z","signature_b64":"1KbiGh4H8XcmGPGwfzPObfD/a/9M56qRFrHgrhmcpOwOFdF0FfJCMsLCc00TNt0BECVx/ApZb1hWuERYqwG7AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"30731e1f6f2ce6eda607e5b9b4b42b7dc6765ab02f0a9928875743641132d0a6","last_reissued_at":"2026-07-05T06:29:51.665251Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:29:51.665251Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2306.00068","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":"2026-07-05T06:29:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bLbEJG7IVKxYa4+RWpwEoT+0gCI3/lJDY3tMnW81U7sro02QY3xZn8wV9JaZQ9jNsjoov1Iedxb2L26pHRCLDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T02:51:42.107393Z"},"content_sha256":"58370cc032275080d6aa7f032ef97838224cbf58890c285f4a7641c2a51c96ff","schema_version":"1.0","event_id":"sha256:58370cc032275080d6aa7f032ef97838224cbf58890c285f4a7641c2a51c96ff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:GBZR4H3PFTTO3JQH4W43JNBLPX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Candidate Dual QSO at Cosmic Noon","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Brooke D. Simmons, Eilat Glikman, Hannah Stacey, Ilsang Yoon, John M. O'Meara, Julia M. Comerford, Makoto A. Johnstone, Mark Lacy, Rachel Langgin","submitted_at":"2023-05-31T18:00:06Z","abstract_excerpt":"We report the discovery of a candidate dual QSO at z=1.889, a redshift that is in the era known as \"cosmic noon\" where most of the Universe's black hole and stellar mass growth occurred. The source was identified in Hubble Space Telescope WFC3/IR images of a dust-reddened QSO that showed two closely-separated point sources at a projected distance of 0.26\", or 2.2 kpc. This red QSO was targeted for imaging to explore whether red QSOs are hosted by merging galaxies. We subsequently obtained a spatially-resolved STIS spectrum of the system, covering the visible spectral range, and verifying the p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.00068","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/2306.00068/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":"2026-07-05T06:29:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jIKYSIBx5V/8m1tw8mNWDEjWPhyVo16iVtvEDOFLHQtyAb8MbvAs3BWf8APIB91cau8QYIOvPaQyBkDCTCrDBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T02:51:42.109364Z"},"content_sha256":"295ac3cff7b974eca7a4d673733439f67d7961796d7e9e8e5be77f48296b3eae","schema_version":"1.0","event_id":"sha256:295ac3cff7b974eca7a4d673733439f67d7961796d7e9e8e5be77f48296b3eae"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GBZR4H3PFTTO3JQH4W43JNBLPX/bundle.json","state_url":"https://pith.science/pith/GBZR4H3PFTTO3JQH4W43JNBLPX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GBZR4H3PFTTO3JQH4W43JNBLPX/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":"2026-08-13T02:51:42Z","links":{"resolver":"https://pith.science/pith/GBZR4H3PFTTO3JQH4W43JNBLPX","bundle":"https://pith.science/pith/GBZR4H3PFTTO3JQH4W43JNBLPX/bundle.json","state":"https://pith.science/pith/GBZR4H3PFTTO3JQH4W43JNBLPX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GBZR4H3PFTTO3JQH4W43JNBLPX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:GBZR4H3PFTTO3JQH4W43JNBLPX","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":"59bb1fea3544d19cf9e947e297fccdcc3c1550281c197dbba7b332b16afe155e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-05-31T18:00:06Z","title_canon_sha256":"585c59a26b3b68d4c68e1104a2e488e747e96eb6213729fdf58ae88453bd9301"},"schema_version":"1.0","source":{"id":"2306.00068","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.00068","created_at":"2026-07-05T06:29:51Z"},{"alias_kind":"arxiv_version","alias_value":"2306.00068v1","created_at":"2026-07-05T06:29:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.00068","created_at":"2026-07-05T06:29:51Z"},{"alias_kind":"pith_short_12","alias_value":"GBZR4H3PFTTO","created_at":"2026-07-05T06:29:51Z"},{"alias_kind":"pith_short_16","alias_value":"GBZR4H3PFTTO3JQH","created_at":"2026-07-05T06:29:51Z"},{"alias_kind":"pith_short_8","alias_value":"GBZR4H3P","created_at":"2026-07-05T06:29:51Z"}],"graph_snapshots":[{"event_id":"sha256:295ac3cff7b974eca7a4d673733439f67d7961796d7e9e8e5be77f48296b3eae","target":"graph","created_at":"2026-07-05T06:29:51Z","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/2306.00068/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the discovery of a candidate dual QSO at z=1.889, a redshift that is in the era known as \"cosmic noon\" where most of the Universe's black hole and stellar mass growth occurred. The source was identified in Hubble Space Telescope WFC3/IR images of a dust-reddened QSO that showed two closely-separated point sources at a projected distance of 0.26\", or 2.2 kpc. This red QSO was targeted for imaging to explore whether red QSOs are hosted by merging galaxies. We subsequently obtained a spatially-resolved STIS spectrum of the system, covering the visible spectral range, and verifying the p","authors_text":"Brooke D. Simmons, Eilat Glikman, Hannah Stacey, Ilsang Yoon, John M. O'Meara, Julia M. Comerford, Makoto A. Johnstone, Mark Lacy, Rachel Langgin","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-05-31T18:00:06Z","title":"A Candidate Dual QSO at Cosmic Noon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.00068","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":"sha256:58370cc032275080d6aa7f032ef97838224cbf58890c285f4a7641c2a51c96ff","target":"record","created_at":"2026-07-05T06:29:51Z","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":"59bb1fea3544d19cf9e947e297fccdcc3c1550281c197dbba7b332b16afe155e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-05-31T18:00:06Z","title_canon_sha256":"585c59a26b3b68d4c68e1104a2e488e747e96eb6213729fdf58ae88453bd9301"},"schema_version":"1.0","source":{"id":"2306.00068","kind":"arxiv","version":1}},"canonical_sha256":"30731e1f6f2ce6eda607e5b9b4b42b7dc6765ab02f0a9928875743641132d0a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"30731e1f6f2ce6eda607e5b9b4b42b7dc6765ab02f0a9928875743641132d0a6","first_computed_at":"2026-07-05T06:29:51.665251Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:29:51.665251Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1KbiGh4H8XcmGPGwfzPObfD/a/9M56qRFrHgrhmcpOwOFdF0FfJCMsLCc00TNt0BECVx/ApZb1hWuERYqwG7AA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:29:51.665774Z","signed_message":"canonical_sha256_bytes"},"source_id":"2306.00068","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58370cc032275080d6aa7f032ef97838224cbf58890c285f4a7641c2a51c96ff","sha256:295ac3cff7b974eca7a4d673733439f67d7961796d7e9e8e5be77f48296b3eae"],"state_sha256":"5bffdd37326070e41facca1ffb4d5ddfc2099a582a8911ff802646bec6b874df"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SaWfJv4rCannkQUbhBmuXWfqz94LXPV1s0HNK1wm9O1MqaBTWOtqCi0FYpOiKiaSxtuJnbZeNiqR8eAVNRmjDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T02:51:42.189220Z","bundle_sha256":"784c4bebb97c2be44eddd8e57dc86983251cf2e9a0f3abff60816f64c984bf6d"}}