{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:LMHS72MPLVYSIXDSPOTWYTYNQV","short_pith_number":"pith:LMHS72MP","canonical_record":{"source":{"id":"1404.2649","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-04-09T23:07:54Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"1b4bdc212b0da43b9842e50e3305dff3be2445d54a7d0b9451cc32c8e88fd414","abstract_canon_sha256":"ca002a090cf921b14fb2a7ad80120a46776c90b49c9a21779289eb130e0c5ed1"},"schema_version":"1.0"},"canonical_sha256":"5b0f2fe98f5d71245c727ba76c4f0d854d8c99d455326c5b174a2e04e65ae80f","source":{"kind":"arxiv","id":"1404.2649","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.2649","created_at":"2026-05-18T01:43:35Z"},{"alias_kind":"arxiv_version","alias_value":"1404.2649v1","created_at":"2026-05-18T01:43:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.2649","created_at":"2026-05-18T01:43:35Z"},{"alias_kind":"pith_short_12","alias_value":"LMHS72MPLVYS","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"LMHS72MPLVYSIXDS","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"LMHS72MP","created_at":"2026-05-18T12:28:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:LMHS72MPLVYSIXDSPOTWYTYNQV","target":"record","payload":{"canonical_record":{"source":{"id":"1404.2649","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-04-09T23:07:54Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"1b4bdc212b0da43b9842e50e3305dff3be2445d54a7d0b9451cc32c8e88fd414","abstract_canon_sha256":"ca002a090cf921b14fb2a7ad80120a46776c90b49c9a21779289eb130e0c5ed1"},"schema_version":"1.0"},"canonical_sha256":"5b0f2fe98f5d71245c727ba76c4f0d854d8c99d455326c5b174a2e04e65ae80f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:35.877051Z","signature_b64":"H+Wv3H7b72U74m6wXPRPUH5DOJMpMPk0sprYpIRpo+PTJR+5LnTl0ybYknEQbyBsUUjt0he+O2e/TKYgHIusDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5b0f2fe98f5d71245c727ba76c4f0d854d8c99d455326c5b174a2e04e65ae80f","last_reissued_at":"2026-05-18T01:43:35.876450Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:35.876450Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.2649","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":"2026-05-18T01:43:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BTrVpXqK4Q3tnyF6pdnaBzO1D83e6t2S7ZKrH1hpfJHmu5K18baPPvkK215JWoTGlie7yJNHLsmxE0kRO01/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:45:54.915281Z"},"content_sha256":"e1e8cde40a801ea278909304c7f4108100038267bdf47cf756539bc9f7c0c42c","schema_version":"1.0","event_id":"sha256:e1e8cde40a801ea278909304c7f4108100038267bdf47cf756539bc9f7c0c42c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:LMHS72MPLVYSIXDSPOTWYTYNQV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ca II Absorbers in the Sloan Digital Sky Survey: Statistics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"David A. Turnshek, Gendith M. Sardane, PITT PACC), Sandhya M. Rao (University of Pittsburgh","submitted_at":"2014-04-09T23:07:54Z","abstract_excerpt":"We present the results of a survey for CaII 3934,3969 absorption-line systems culled from ~ 95,000 Sloan Digital Sky Survey (SDSS) Data Release 7 and Data Release 9 quasar spectra. With 435 doublets identified in the catalog, this list is the largest CaII catalog compiled to date, spanning redshifts z < 1.34, which corresponds to the most recent ~ 8.9 Gyrs of the history of the Universe. We derive statistics on the CaII rest equivalent width distribution (REW) and incidence (number density per unit redshift). We find that the lambda3934 REW distribution cannot be described by a single exponent"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.2649","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":""},"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":"2026-05-18T01:43:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LEXRhk1cY1G61uTaGewxkt0nH6mvfLwd7m5ukGBJg88NslasVoMieJY21hcwolp75D1HX36u36uW3X41KMJTBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:45:54.915643Z"},"content_sha256":"445f6c169e96faf836049139417ec79fdae6f943c37a08dcc35aa986415bf1d0","schema_version":"1.0","event_id":"sha256:445f6c169e96faf836049139417ec79fdae6f943c37a08dcc35aa986415bf1d0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LMHS72MPLVYSIXDSPOTWYTYNQV/bundle.json","state_url":"https://pith.science/pith/LMHS72MPLVYSIXDSPOTWYTYNQV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LMHS72MPLVYSIXDSPOTWYTYNQV/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":"2026-06-02T06:45:54Z","links":{"resolver":"https://pith.science/pith/LMHS72MPLVYSIXDSPOTWYTYNQV","bundle":"https://pith.science/pith/LMHS72MPLVYSIXDSPOTWYTYNQV/bundle.json","state":"https://pith.science/pith/LMHS72MPLVYSIXDSPOTWYTYNQV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LMHS72MPLVYSIXDSPOTWYTYNQV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:LMHS72MPLVYSIXDSPOTWYTYNQV","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":"ca002a090cf921b14fb2a7ad80120a46776c90b49c9a21779289eb130e0c5ed1","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-04-09T23:07:54Z","title_canon_sha256":"1b4bdc212b0da43b9842e50e3305dff3be2445d54a7d0b9451cc32c8e88fd414"},"schema_version":"1.0","source":{"id":"1404.2649","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.2649","created_at":"2026-05-18T01:43:35Z"},{"alias_kind":"arxiv_version","alias_value":"1404.2649v1","created_at":"2026-05-18T01:43:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.2649","created_at":"2026-05-18T01:43:35Z"},{"alias_kind":"pith_short_12","alias_value":"LMHS72MPLVYS","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"LMHS72MPLVYSIXDS","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"LMHS72MP","created_at":"2026-05-18T12:28:38Z"}],"graph_snapshots":[{"event_id":"sha256:445f6c169e96faf836049139417ec79fdae6f943c37a08dcc35aa986415bf1d0","target":"graph","created_at":"2026-05-18T01:43:35Z","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 the results of a survey for CaII 3934,3969 absorption-line systems culled from ~ 95,000 Sloan Digital Sky Survey (SDSS) Data Release 7 and Data Release 9 quasar spectra. With 435 doublets identified in the catalog, this list is the largest CaII catalog compiled to date, spanning redshifts z < 1.34, which corresponds to the most recent ~ 8.9 Gyrs of the history of the Universe. We derive statistics on the CaII rest equivalent width distribution (REW) and incidence (number density per unit redshift). We find that the lambda3934 REW distribution cannot be described by a single exponent","authors_text":"David A. Turnshek, Gendith M. Sardane, PITT PACC), Sandhya M. Rao (University of Pittsburgh","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-04-09T23:07:54Z","title":"Ca II Absorbers in the Sloan Digital Sky Survey: Statistics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.2649","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:e1e8cde40a801ea278909304c7f4108100038267bdf47cf756539bc9f7c0c42c","target":"record","created_at":"2026-05-18T01:43:35Z","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":"ca002a090cf921b14fb2a7ad80120a46776c90b49c9a21779289eb130e0c5ed1","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-04-09T23:07:54Z","title_canon_sha256":"1b4bdc212b0da43b9842e50e3305dff3be2445d54a7d0b9451cc32c8e88fd414"},"schema_version":"1.0","source":{"id":"1404.2649","kind":"arxiv","version":1}},"canonical_sha256":"5b0f2fe98f5d71245c727ba76c4f0d854d8c99d455326c5b174a2e04e65ae80f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5b0f2fe98f5d71245c727ba76c4f0d854d8c99d455326c5b174a2e04e65ae80f","first_computed_at":"2026-05-18T01:43:35.876450Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:35.876450Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H+Wv3H7b72U74m6wXPRPUH5DOJMpMPk0sprYpIRpo+PTJR+5LnTl0ybYknEQbyBsUUjt0he+O2e/TKYgHIusDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:35.877051Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.2649","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e1e8cde40a801ea278909304c7f4108100038267bdf47cf756539bc9f7c0c42c","sha256:445f6c169e96faf836049139417ec79fdae6f943c37a08dcc35aa986415bf1d0"],"state_sha256":"503fca596e9fb55d2ec3f3a1e34f306cb5e8d51d43571d1568e86f0f0b7a1c85"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZavCjBXGWGP9KDphKSmHyYnQD2qUFLan3JoSJaEzAiPwYydeiEaRjXaUw39+7om0TISyOP5xpqCPtmsAtkpWDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T06:45:54.917616Z","bundle_sha256":"5eafda7853ee1c07f0c067e4923363b289fdb47aab7da0a30870b8e58cc2c499"}}