{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:65K2XQCZTQHBO3FRYKIOD7DXXS","short_pith_number":"pith:65K2XQCZ","canonical_record":{"source":{"id":"2305.00998","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-05-01T18:00:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"0d1aa422674c3a58542d745c2921454d24bade86a3962de0aef9c283a7c7ff5c","abstract_canon_sha256":"ea3533fe52db642fd723e83bbfdf90a5d1c0457ac35c72f7b2d45a45bdbdd53e"},"schema_version":"1.0"},"canonical_sha256":"f755abc0599c0e176cb1c290e1fc77bcbe125438fd863ecf5d4bab9148e395e4","source":{"kind":"arxiv","id":"2305.00998","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.00998","created_at":"2026-07-05T06:08:27Z"},{"alias_kind":"arxiv_version","alias_value":"2305.00998v1","created_at":"2026-07-05T06:08:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.00998","created_at":"2026-07-05T06:08:27Z"},{"alias_kind":"pith_short_12","alias_value":"65K2XQCZTQHB","created_at":"2026-07-05T06:08:27Z"},{"alias_kind":"pith_short_16","alias_value":"65K2XQCZTQHBO3FR","created_at":"2026-07-05T06:08:27Z"},{"alias_kind":"pith_short_8","alias_value":"65K2XQCZ","created_at":"2026-07-05T06:08:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:65K2XQCZTQHBO3FRYKIOD7DXXS","target":"record","payload":{"canonical_record":{"source":{"id":"2305.00998","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-05-01T18:00:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"0d1aa422674c3a58542d745c2921454d24bade86a3962de0aef9c283a7c7ff5c","abstract_canon_sha256":"ea3533fe52db642fd723e83bbfdf90a5d1c0457ac35c72f7b2d45a45bdbdd53e"},"schema_version":"1.0"},"canonical_sha256":"f755abc0599c0e176cb1c290e1fc77bcbe125438fd863ecf5d4bab9148e395e4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:08:27.949271Z","signature_b64":"DXl0UmeeNwPkb6RXL/goEnNoqvvevZOFyCuQ402Z7Rj4wXzANLEjACLe1T1zIr2U85Ra0+VIOJjs5AZXCw+wBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f755abc0599c0e176cb1c290e1fc77bcbe125438fd863ecf5d4bab9148e395e4","last_reissued_at":"2026-07-05T06:08:27.948818Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:08:27.948818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2305.00998","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":"2026-07-05T06:08:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qgEDdIelS8skazHZVLOG7iMPQbcLENBjBg9OoTMO8twL22EF8z5VQ8HGmZUTh0XQS0meMyOS6AyRALlCHt2uDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T13:09:33.927913Z"},"content_sha256":"9bd377368e041de0b234e917aa9b6baa6bf4c61cd782b34dbc1234e0958b4ee1","schema_version":"1.0","event_id":"sha256:9bd377368e041de0b234e917aa9b6baa6bf4c61cd782b34dbc1234e0958b4ee1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:65K2XQCZTQHBO3FRYKIOD7DXXS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"New quasar proximity zone size measurements at $z\\sim 6$ using the enlarged XQR-30 sample","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Anna-Christina Eilers, Bradley Greig, Chiara Mazzucchelli, Eduardo Ba\\~nados, Emanuele Paolo Farina, Emma Ryan-Weber, Fabian Walter, George D. Becker, Girish Kulkarni, Laura C. Keating, Manuela Bischetti, Martin G. Haehnelt, Rebecca L. Davies, Samuel Lai, Sarah E. I. Bosman, Sindhu Satyavolu (TIFR), Valentina D'Odorico, Xiaohui Fan","submitted_at":"2023-05-01T18:00:01Z","abstract_excerpt":"Proximity zones of high-redshift quasars are unique probes of their central supermassive black holes as well as the intergalactic medium in the last stages of reionization. We present 22 new measurements of proximity zones of quasars with redshifts between 5.8 and 6.6, using the enlarged XQR-30 sample of high-resolution, high-SNR quasar spectra. The quasars in our sample have UV magnitudes of $M_{1450}\\sim -27$ and black hole masses of $10^9$$\\unicode{x2013}$$10^{10}$ M$_\\odot$. Our inferred proximity zone sizes are 2$\\unicode{x2013}$7 physical Mpc, with a typical uncertainty of less than 0.5 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.00998","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/2305.00998/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":"2026-07-05T06:08:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gja8Ao5OIfMQAGoKVxF3hufQInaWmzBp8kwtpgE/648Tj6mtAMbVlwHFn7QYhHomIJYAluAe1do/o/SAaVj9CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T13:09:33.928763Z"},"content_sha256":"ae37f4619756aefa6c81abc45e46aead7a4ce70ef5afdf1a1af951c6a7c25c99","schema_version":"1.0","event_id":"sha256:ae37f4619756aefa6c81abc45e46aead7a4ce70ef5afdf1a1af951c6a7c25c99"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/65K2XQCZTQHBO3FRYKIOD7DXXS/bundle.json","state_url":"https://pith.science/pith/65K2XQCZTQHBO3FRYKIOD7DXXS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/65K2XQCZTQHBO3FRYKIOD7DXXS/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":"2026-08-11T13:09:33Z","links":{"resolver":"https://pith.science/pith/65K2XQCZTQHBO3FRYKIOD7DXXS","bundle":"https://pith.science/pith/65K2XQCZTQHBO3FRYKIOD7DXXS/bundle.json","state":"https://pith.science/pith/65K2XQCZTQHBO3FRYKIOD7DXXS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/65K2XQCZTQHBO3FRYKIOD7DXXS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:65K2XQCZTQHBO3FRYKIOD7DXXS","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":"ea3533fe52db642fd723e83bbfdf90a5d1c0457ac35c72f7b2d45a45bdbdd53e","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-05-01T18:00:01Z","title_canon_sha256":"0d1aa422674c3a58542d745c2921454d24bade86a3962de0aef9c283a7c7ff5c"},"schema_version":"1.0","source":{"id":"2305.00998","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.00998","created_at":"2026-07-05T06:08:27Z"},{"alias_kind":"arxiv_version","alias_value":"2305.00998v1","created_at":"2026-07-05T06:08:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.00998","created_at":"2026-07-05T06:08:27Z"},{"alias_kind":"pith_short_12","alias_value":"65K2XQCZTQHB","created_at":"2026-07-05T06:08:27Z"},{"alias_kind":"pith_short_16","alias_value":"65K2XQCZTQHBO3FR","created_at":"2026-07-05T06:08:27Z"},{"alias_kind":"pith_short_8","alias_value":"65K2XQCZ","created_at":"2026-07-05T06:08:27Z"}],"graph_snapshots":[{"event_id":"sha256:ae37f4619756aefa6c81abc45e46aead7a4ce70ef5afdf1a1af951c6a7c25c99","target":"graph","created_at":"2026-07-05T06:08:27Z","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/2305.00998/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Proximity zones of high-redshift quasars are unique probes of their central supermassive black holes as well as the intergalactic medium in the last stages of reionization. We present 22 new measurements of proximity zones of quasars with redshifts between 5.8 and 6.6, using the enlarged XQR-30 sample of high-resolution, high-SNR quasar spectra. The quasars in our sample have UV magnitudes of $M_{1450}\\sim -27$ and black hole masses of $10^9$$\\unicode{x2013}$$10^{10}$ M$_\\odot$. Our inferred proximity zone sizes are 2$\\unicode{x2013}$7 physical Mpc, with a typical uncertainty of less than 0.5 ","authors_text":"Anna-Christina Eilers, Bradley Greig, Chiara Mazzucchelli, Eduardo Ba\\~nados, Emanuele Paolo Farina, Emma Ryan-Weber, Fabian Walter, George D. Becker, Girish Kulkarni, Laura C. Keating, Manuela Bischetti, Martin G. Haehnelt, Rebecca L. Davies, Samuel Lai, Sarah E. I. Bosman, Sindhu Satyavolu (TIFR), Valentina D'Odorico, Xiaohui Fan","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-05-01T18:00:01Z","title":"New quasar proximity zone size measurements at $z\\sim 6$ using the enlarged XQR-30 sample"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.00998","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":"sha256:9bd377368e041de0b234e917aa9b6baa6bf4c61cd782b34dbc1234e0958b4ee1","target":"record","created_at":"2026-07-05T06:08:27Z","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":"ea3533fe52db642fd723e83bbfdf90a5d1c0457ac35c72f7b2d45a45bdbdd53e","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-05-01T18:00:01Z","title_canon_sha256":"0d1aa422674c3a58542d745c2921454d24bade86a3962de0aef9c283a7c7ff5c"},"schema_version":"1.0","source":{"id":"2305.00998","kind":"arxiv","version":1}},"canonical_sha256":"f755abc0599c0e176cb1c290e1fc77bcbe125438fd863ecf5d4bab9148e395e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f755abc0599c0e176cb1c290e1fc77bcbe125438fd863ecf5d4bab9148e395e4","first_computed_at":"2026-07-05T06:08:27.948818Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:08:27.948818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DXl0UmeeNwPkb6RXL/goEnNoqvvevZOFyCuQ402Z7Rj4wXzANLEjACLe1T1zIr2U85Ra0+VIOJjs5AZXCw+wBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:08:27.949271Z","signed_message":"canonical_sha256_bytes"},"source_id":"2305.00998","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9bd377368e041de0b234e917aa9b6baa6bf4c61cd782b34dbc1234e0958b4ee1","sha256:ae37f4619756aefa6c81abc45e46aead7a4ce70ef5afdf1a1af951c6a7c25c99"],"state_sha256":"ab0c1558e0070ab3de6ada43c435b63e0ebdd25354a696ce6977b033b19e2ad4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QuI1xNOzkE4CTTAy2SCpDpTQnCQO0Nvcb2E/VHEh0AqCsC34In7tbkHUfw+H4882zCIyMU6JFuY7f8ztN+oHBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T13:09:33.939778Z","bundle_sha256":"ac3c43d79831172c9dc5990cf6a7ef0a1ddee3ccf6ca2f71d98ba1bb12a38238"}}