{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:KOAYYU373XYXBVM542Z5TK4EH4","short_pith_number":"pith:KOAYYU37","canonical_record":{"source":{"id":"astro-ph/0412552","kind":"arxiv","version":4},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-12-21T08:06:34Z","cross_cats_sorted":[],"title_canon_sha256":"01dab7e37a89ade2d1f1761cf4c8920c1329f6f053f562843be266fd38eb0e9f","abstract_canon_sha256":"b35cb8aacf0188ba2944eec180fd5f83c9b92329106c748144f93d47467f99ee"},"schema_version":"1.0"},"canonical_sha256":"53818c537fddf170d59de6b3d9ab843f2fd47ee507fc4555896e70ce01fb642a","source":{"kind":"arxiv","id":"astro-ph/0412552","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0412552","created_at":"2026-07-04T14:13:59Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0412552v4","created_at":"2026-07-04T14:13:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0412552","created_at":"2026-07-04T14:13:59Z"},{"alias_kind":"pith_short_12","alias_value":"KOAYYU373XYX","created_at":"2026-07-04T14:13:59Z"},{"alias_kind":"pith_short_16","alias_value":"KOAYYU373XYXBVM5","created_at":"2026-07-04T14:13:59Z"},{"alias_kind":"pith_short_8","alias_value":"KOAYYU37","created_at":"2026-07-04T14:13:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:KOAYYU373XYXBVM542Z5TK4EH4","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0412552","kind":"arxiv","version":4},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-12-21T08:06:34Z","cross_cats_sorted":[],"title_canon_sha256":"01dab7e37a89ade2d1f1761cf4c8920c1329f6f053f562843be266fd38eb0e9f","abstract_canon_sha256":"b35cb8aacf0188ba2944eec180fd5f83c9b92329106c748144f93d47467f99ee"},"schema_version":"1.0"},"canonical_sha256":"53818c537fddf170d59de6b3d9ab843f2fd47ee507fc4555896e70ce01fb642a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:13:59.514587Z","signature_b64":"HUOB6uoow8yXVGmoFq/nUYR2kzmRKSnaqPMMqt+jx6WmhdF1ityHPZiSakiZoc+2l9+duIRLJeF1gM2CWXzDBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"53818c537fddf170d59de6b3d9ab843f2fd47ee507fc4555896e70ce01fb642a","last_reissued_at":"2026-07-04T14:13:59.514162Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:13:59.514162Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0412552","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":"2026-07-04T14:13:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+T/3UugWozfX93hfld3yVoV4NwElIZyn4KAdWyFFo8g6yXrQc3f45BOrSnzt7TeUbk3lF2JzCqT7OA7EFRbNDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T14:35:58.237659Z"},"content_sha256":"89df6427c59d6390307aeeec0fcd82a36916f88fa099773f9f2c1915921a0dfe","schema_version":"1.0","event_id":"sha256:89df6427c59d6390307aeeec0fcd82a36916f88fa099773f9f2c1915921a0dfe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:KOAYYU373XYXBVM542Z5TK4EH4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmochemistry, Cosmology and Fundamental Constants: High-Resolution Spectroscopy of Damped Lyman-Alpha Systems","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Smette, C. Ledoux, D. Reimers, L. Wisotzki, O. Garcet, R. Quast, S. Lopez","submitted_at":"2004-12-21T08:06:34Z","abstract_excerpt":"Spectroscopy of QSO absorption lines provides essential observational input for the study of nucleosynthesis and chemical evolution of galaxies at high redshift. But new observations may indicate that present chemical abundance data are biased due to deficient spectral resolution and unknown selection effects: Recent high-resolution spectra reveal the hitherto unperceived chemical nonuniformity of a molecule-bearing damped Lyman-alpha (DLA) system, and the still ongoing H/ESO DLA survey produces convincing evidence for the effect of dust attenuation. We present a revised analysis of the molecu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0412552","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/astro-ph/0412552/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":"2026-07-04T14:13:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DFNK0F6d1b6fbFlzIJ5jOEgm7MrX7xvKp56Ta/NHD5sDO7ZLXmTqCLBFxbhbtT/6gJaPfeG5/bTwEU9fbb87BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T14:35:58.238163Z"},"content_sha256":"c2094b9749058e6d54b43f541a3b58418e24e24d2260730a701a087c88f4632d","schema_version":"1.0","event_id":"sha256:c2094b9749058e6d54b43f541a3b58418e24e24d2260730a701a087c88f4632d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KOAYYU373XYXBVM542Z5TK4EH4/bundle.json","state_url":"https://pith.science/pith/KOAYYU373XYXBVM542Z5TK4EH4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KOAYYU373XYXBVM542Z5TK4EH4/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":"2026-08-15T14:35:58Z","links":{"resolver":"https://pith.science/pith/KOAYYU373XYXBVM542Z5TK4EH4","bundle":"https://pith.science/pith/KOAYYU373XYXBVM542Z5TK4EH4/bundle.json","state":"https://pith.science/pith/KOAYYU373XYXBVM542Z5TK4EH4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KOAYYU373XYXBVM542Z5TK4EH4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:KOAYYU373XYXBVM542Z5TK4EH4","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":"b35cb8aacf0188ba2944eec180fd5f83c9b92329106c748144f93d47467f99ee","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-12-21T08:06:34Z","title_canon_sha256":"01dab7e37a89ade2d1f1761cf4c8920c1329f6f053f562843be266fd38eb0e9f"},"schema_version":"1.0","source":{"id":"astro-ph/0412552","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0412552","created_at":"2026-07-04T14:13:59Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0412552v4","created_at":"2026-07-04T14:13:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0412552","created_at":"2026-07-04T14:13:59Z"},{"alias_kind":"pith_short_12","alias_value":"KOAYYU373XYX","created_at":"2026-07-04T14:13:59Z"},{"alias_kind":"pith_short_16","alias_value":"KOAYYU373XYXBVM5","created_at":"2026-07-04T14:13:59Z"},{"alias_kind":"pith_short_8","alias_value":"KOAYYU37","created_at":"2026-07-04T14:13:59Z"}],"graph_snapshots":[{"event_id":"sha256:c2094b9749058e6d54b43f541a3b58418e24e24d2260730a701a087c88f4632d","target":"graph","created_at":"2026-07-04T14:13:59Z","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/astro-ph/0412552/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Spectroscopy of QSO absorption lines provides essential observational input for the study of nucleosynthesis and chemical evolution of galaxies at high redshift. But new observations may indicate that present chemical abundance data are biased due to deficient spectral resolution and unknown selection effects: Recent high-resolution spectra reveal the hitherto unperceived chemical nonuniformity of a molecule-bearing damped Lyman-alpha (DLA) system, and the still ongoing H/ESO DLA survey produces convincing evidence for the effect of dust attenuation. We present a revised analysis of the molecu","authors_text":"A. Smette, C. Ledoux, D. Reimers, L. Wisotzki, O. Garcet, R. Quast, S. Lopez","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-12-21T08:06:34Z","title":"Cosmochemistry, Cosmology and Fundamental Constants: High-Resolution Spectroscopy of Damped Lyman-Alpha Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0412552","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":"sha256:89df6427c59d6390307aeeec0fcd82a36916f88fa099773f9f2c1915921a0dfe","target":"record","created_at":"2026-07-04T14:13:59Z","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":"b35cb8aacf0188ba2944eec180fd5f83c9b92329106c748144f93d47467f99ee","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-12-21T08:06:34Z","title_canon_sha256":"01dab7e37a89ade2d1f1761cf4c8920c1329f6f053f562843be266fd38eb0e9f"},"schema_version":"1.0","source":{"id":"astro-ph/0412552","kind":"arxiv","version":4}},"canonical_sha256":"53818c537fddf170d59de6b3d9ab843f2fd47ee507fc4555896e70ce01fb642a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"53818c537fddf170d59de6b3d9ab843f2fd47ee507fc4555896e70ce01fb642a","first_computed_at":"2026-07-04T14:13:59.514162Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:13:59.514162Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HUOB6uoow8yXVGmoFq/nUYR2kzmRKSnaqPMMqt+jx6WmhdF1ityHPZiSakiZoc+2l9+duIRLJeF1gM2CWXzDBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T14:13:59.514587Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0412552","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:89df6427c59d6390307aeeec0fcd82a36916f88fa099773f9f2c1915921a0dfe","sha256:c2094b9749058e6d54b43f541a3b58418e24e24d2260730a701a087c88f4632d"],"state_sha256":"1797dec3e3d8f8479a75fffddf562366c70e18db4e7c79cb08cbd3b19c8142b8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"doS2bdRKuy0j6175kp5iRyH5iY5XkeME904OiQV4Nl9PcErNA0o6w/O3Wv4+AznoXW45ntcQm9wZwnj/lQnuAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T14:35:58.282698Z","bundle_sha256":"4cba8a5355cb1f0d028ab7503a9bd2ca729caac145c16277923f74ed483766d4"}}