{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:O7WNVEYANZT7ISFQPO6ID6KSSC","short_pith_number":"pith:O7WNVEYA","schema_version":"1.0","canonical_sha256":"77ecda93006e67f448b07bbc81f95290b0e27b26301218e800149d9dff8a854f","source":{"kind":"arxiv","id":"1209.2240","version":1},"attestation_state":"computed","paper":{"title":"Can Galactic chemical evolution explain the oxygen isotopic variations in the Solar System?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Kurt Liffman, Maria Lugaro, Sarah T. Maddison, Trevor R. Ireland","submitted_at":"2012-09-11T06:43:09Z","abstract_excerpt":"A number of objects in primitive meteorites have oxygen isotopic compositions that place them on a distinct, mass-independent fractionation line with a slope of one on a three-isotope plot. The most popular model for describing how this fractionation arose assumes that CO self-shielding produced 16O-rich CO and 16O-poor H2O, where the H2O subsequently combined with interstellar dust to form relatively 16O-poor solids within the Solar Nebula. Another model for creating the different reservoirs of 16O-rich gas and 16O-poor solids suggests that these reservoirs were produced by Galactic chemical "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1209.2240","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-09-11T06:43:09Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"78db4933fd7938a00aab6c0b75bba5e04c1dc515804c50cd4aae33661144d368","abstract_canon_sha256":"adb2e01c74caa7409f825b5fc798de2fc689e58f4d8fd9fede1d5f39e9168030"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:30.704288Z","signature_b64":"Gck+e/HFWLa4C76981pFuQ3wra3IIxbhQ0aOhz8WdywleejMmHq0/qWQYNyVvj2VtNIko9GKIvZeFym2oEKgBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"77ecda93006e67f448b07bbc81f95290b0e27b26301218e800149d9dff8a854f","last_reissued_at":"2026-05-18T01:54:30.703717Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:30.703717Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Can Galactic chemical evolution explain the oxygen isotopic variations in the Solar System?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Kurt Liffman, Maria Lugaro, Sarah T. Maddison, Trevor R. Ireland","submitted_at":"2012-09-11T06:43:09Z","abstract_excerpt":"A number of objects in primitive meteorites have oxygen isotopic compositions that place them on a distinct, mass-independent fractionation line with a slope of one on a three-isotope plot. The most popular model for describing how this fractionation arose assumes that CO self-shielding produced 16O-rich CO and 16O-poor H2O, where the H2O subsequently combined with interstellar dust to form relatively 16O-poor solids within the Solar Nebula. Another model for creating the different reservoirs of 16O-rich gas and 16O-poor solids suggests that these reservoirs were produced by Galactic chemical "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.2240","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1209.2240","created_at":"2026-05-18T01:54:30.703805+00:00"},{"alias_kind":"arxiv_version","alias_value":"1209.2240v1","created_at":"2026-05-18T01:54:30.703805+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.2240","created_at":"2026-05-18T01:54:30.703805+00:00"},{"alias_kind":"pith_short_12","alias_value":"O7WNVEYANZT7","created_at":"2026-05-18T12:27:16.716162+00:00"},{"alias_kind":"pith_short_16","alias_value":"O7WNVEYANZT7ISFQ","created_at":"2026-05-18T12:27:16.716162+00:00"},{"alias_kind":"pith_short_8","alias_value":"O7WNVEYA","created_at":"2026-05-18T12:27:16.716162+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/O7WNVEYANZT7ISFQPO6ID6KSSC","json":"https://pith.science/pith/O7WNVEYANZT7ISFQPO6ID6KSSC.json","graph_json":"https://pith.science/api/pith-number/O7WNVEYANZT7ISFQPO6ID6KSSC/graph.json","events_json":"https://pith.science/api/pith-number/O7WNVEYANZT7ISFQPO6ID6KSSC/events.json","paper":"https://pith.science/paper/O7WNVEYA"},"agent_actions":{"view_html":"https://pith.science/pith/O7WNVEYANZT7ISFQPO6ID6KSSC","download_json":"https://pith.science/pith/O7WNVEYANZT7ISFQPO6ID6KSSC.json","view_paper":"https://pith.science/paper/O7WNVEYA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1209.2240&json=true","fetch_graph":"https://pith.science/api/pith-number/O7WNVEYANZT7ISFQPO6ID6KSSC/graph.json","fetch_events":"https://pith.science/api/pith-number/O7WNVEYANZT7ISFQPO6ID6KSSC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/O7WNVEYANZT7ISFQPO6ID6KSSC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/O7WNVEYANZT7ISFQPO6ID6KSSC/action/storage_attestation","attest_author":"https://pith.science/pith/O7WNVEYANZT7ISFQPO6ID6KSSC/action/author_attestation","sign_citation":"https://pith.science/pith/O7WNVEYANZT7ISFQPO6ID6KSSC/action/citation_signature","submit_replication":"https://pith.science/pith/O7WNVEYANZT7ISFQPO6ID6KSSC/action/replication_record"}},"created_at":"2026-05-18T01:54:30.703805+00:00","updated_at":"2026-05-18T01:54:30.703805+00:00"}