{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:A2NQTAXBHTDNDQM3ZCAOLQA65V","short_pith_number":"pith:A2NQTAXB","canonical_record":{"source":{"id":"1307.0678","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-07-02T10:53:22Z","cross_cats_sorted":[],"title_canon_sha256":"962f98e5fc7de0127c04624e1cb614d0cb1694147273fb473ffab343e51c59a7","abstract_canon_sha256":"31dc1e00a2d3ee0fe77d438a4ffcb0791e87ee9b857b25cfb329f5f41f4b470d"},"schema_version":"1.0"},"canonical_sha256":"069b0982e13cc6d1c19bc880e5c01eed7e87bfb3498c513b7bb772688590b4df","source":{"kind":"arxiv","id":"1307.0678","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.0678","created_at":"2026-05-18T03:15:55Z"},{"alias_kind":"arxiv_version","alias_value":"1307.0678v2","created_at":"2026-05-18T03:15:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.0678","created_at":"2026-05-18T03:15:55Z"},{"alias_kind":"pith_short_12","alias_value":"A2NQTAXBHTDN","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"A2NQTAXBHTDNDQM3","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"A2NQTAXB","created_at":"2026-05-18T12:27:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:A2NQTAXBHTDNDQM3ZCAOLQA65V","target":"record","payload":{"canonical_record":{"source":{"id":"1307.0678","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-07-02T10:53:22Z","cross_cats_sorted":[],"title_canon_sha256":"962f98e5fc7de0127c04624e1cb614d0cb1694147273fb473ffab343e51c59a7","abstract_canon_sha256":"31dc1e00a2d3ee0fe77d438a4ffcb0791e87ee9b857b25cfb329f5f41f4b470d"},"schema_version":"1.0"},"canonical_sha256":"069b0982e13cc6d1c19bc880e5c01eed7e87bfb3498c513b7bb772688590b4df","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:15:55.521638Z","signature_b64":"iCJ46lxGf7IvdFAYwQGKDSMO8c5qJTAV5jTTSaNCfTYTeE968bG8v64q3aQsE6dz7+oT2Fc0yNODqV2OOxE8BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"069b0982e13cc6d1c19bc880e5c01eed7e87bfb3498c513b7bb772688590b4df","last_reissued_at":"2026-05-18T03:15:55.520827Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:15:55.520827Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.0678","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:15:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R2AT/zJJ3sZtdlPCMRGwyX2zL4iIOgcJzGgaDbJ6+ucQLyMXfQ0t05FegWmIV39GDru4Z3r89JgDii65KZjTBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T05:39:28.516445Z"},"content_sha256":"032d4c1fc0bce7780b736916ffa26eb05e81312ce11600624656705ff113f5c8","schema_version":"1.0","event_id":"sha256:032d4c1fc0bce7780b736916ffa26eb05e81312ce11600624656705ff113f5c8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:A2NQTAXBHTDNDQM3ZCAOLQA65V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The ESO UVES Advanced Data Products Quasar Sample - I. Dataset and New N_HI Measurements of Damped Absorbers","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(2) ICRAR), Attila Popping (2), Celine Peroux (1) ((1) LAM, Tayyaba Zafar (1)","submitted_at":"2013-07-02T10:53:22Z","abstract_excerpt":"We present here a dataset of quasars observed with the Ultraviolet Visual Echelle Spectrograph (UVES) on the VLT and available in the ESO UVES Advanced Data Products archive. The sample is made up of a total of 250 high resolution quasar spectra with emission redshifts ranging from 0.191 < z_em <6.311. The total UVES exposure time of this dataset is 1560 hours. Thanks to the high resolution of UVES spectra, it is possible to unambiguously measure the column density of absorbers with damping wings, down to N_HI > 10^{19} cm^{-2}, which constitutes the sub-damped Lya absorber (sub-DLA) threshold"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.0678","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T03:15:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k9E5XFUAxiTwTH+ElnC1m2GgXlU5s/KcsT2IAZz7UIF92Chal8SPGpg9+anpfK+6B1SmLaZwWFJ3JhjKkBMlCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T05:39:28.517100Z"},"content_sha256":"897d3ed22421647fa98c4b369eacc7203496cfed4fa1ca93470dd3636c37892a","schema_version":"1.0","event_id":"sha256:897d3ed22421647fa98c4b369eacc7203496cfed4fa1ca93470dd3636c37892a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A2NQTAXBHTDNDQM3ZCAOLQA65V/bundle.json","state_url":"https://pith.science/pith/A2NQTAXBHTDNDQM3ZCAOLQA65V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A2NQTAXBHTDNDQM3ZCAOLQA65V/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":"2026-05-27T05:39:28Z","links":{"resolver":"https://pith.science/pith/A2NQTAXBHTDNDQM3ZCAOLQA65V","bundle":"https://pith.science/pith/A2NQTAXBHTDNDQM3ZCAOLQA65V/bundle.json","state":"https://pith.science/pith/A2NQTAXBHTDNDQM3ZCAOLQA65V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A2NQTAXBHTDNDQM3ZCAOLQA65V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:A2NQTAXBHTDNDQM3ZCAOLQA65V","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":"31dc1e00a2d3ee0fe77d438a4ffcb0791e87ee9b857b25cfb329f5f41f4b470d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-07-02T10:53:22Z","title_canon_sha256":"962f98e5fc7de0127c04624e1cb614d0cb1694147273fb473ffab343e51c59a7"},"schema_version":"1.0","source":{"id":"1307.0678","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.0678","created_at":"2026-05-18T03:15:55Z"},{"alias_kind":"arxiv_version","alias_value":"1307.0678v2","created_at":"2026-05-18T03:15:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.0678","created_at":"2026-05-18T03:15:55Z"},{"alias_kind":"pith_short_12","alias_value":"A2NQTAXBHTDN","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"A2NQTAXBHTDNDQM3","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"A2NQTAXB","created_at":"2026-05-18T12:27:38Z"}],"graph_snapshots":[{"event_id":"sha256:897d3ed22421647fa98c4b369eacc7203496cfed4fa1ca93470dd3636c37892a","target":"graph","created_at":"2026-05-18T03:15:55Z","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"},"paper":{"abstract_excerpt":"We present here a dataset of quasars observed with the Ultraviolet Visual Echelle Spectrograph (UVES) on the VLT and available in the ESO UVES Advanced Data Products archive. The sample is made up of a total of 250 high resolution quasar spectra with emission redshifts ranging from 0.191 < z_em <6.311. The total UVES exposure time of this dataset is 1560 hours. Thanks to the high resolution of UVES spectra, it is possible to unambiguously measure the column density of absorbers with damping wings, down to N_HI > 10^{19} cm^{-2}, which constitutes the sub-damped Lya absorber (sub-DLA) threshold","authors_text":"(2) ICRAR), Attila Popping (2), Celine Peroux (1) ((1) LAM, Tayyaba Zafar (1)","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-07-02T10:53:22Z","title":"The ESO UVES Advanced Data Products Quasar Sample - I. Dataset and New N_HI Measurements of Damped Absorbers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.0678","kind":"arxiv","version":2},"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":"sha256:032d4c1fc0bce7780b736916ffa26eb05e81312ce11600624656705ff113f5c8","target":"record","created_at":"2026-05-18T03:15:55Z","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":"31dc1e00a2d3ee0fe77d438a4ffcb0791e87ee9b857b25cfb329f5f41f4b470d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-07-02T10:53:22Z","title_canon_sha256":"962f98e5fc7de0127c04624e1cb614d0cb1694147273fb473ffab343e51c59a7"},"schema_version":"1.0","source":{"id":"1307.0678","kind":"arxiv","version":2}},"canonical_sha256":"069b0982e13cc6d1c19bc880e5c01eed7e87bfb3498c513b7bb772688590b4df","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"069b0982e13cc6d1c19bc880e5c01eed7e87bfb3498c513b7bb772688590b4df","first_computed_at":"2026-05-18T03:15:55.520827Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:15:55.520827Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iCJ46lxGf7IvdFAYwQGKDSMO8c5qJTAV5jTTSaNCfTYTeE968bG8v64q3aQsE6dz7+oT2Fc0yNODqV2OOxE8BA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:15:55.521638Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.0678","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:032d4c1fc0bce7780b736916ffa26eb05e81312ce11600624656705ff113f5c8","sha256:897d3ed22421647fa98c4b369eacc7203496cfed4fa1ca93470dd3636c37892a"],"state_sha256":"7dbd412671401f24550bdbbd2099698553bfc602a9ef6e1d854a9a2b881f57f7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NLwySYBptG0xiFW+BDxIKwZoFTMpjRPmIAsPKMJuOiDF8oDd7LLcYsEHy0couAOO284LNmpi7qQBs7ZQu9T1BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T05:39:28.521485Z","bundle_sha256":"dc1141c90100a8cf8dcafa3ef482a3414888598e7b657c0b084f4309691b853f"}}