{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:WXJYEXHJ55UI6U5L66TAWKUB5T","short_pith_number":"pith:WXJYEXHJ","schema_version":"1.0","canonical_sha256":"b5d3825ce9ef688f53abf7a60b2a81ecd25765d156e8f51a86e7cb0e015afc18","source":{"kind":"arxiv","id":"1812.11722","version":1},"attestation_state":"computed","paper":{"title":"Geologic Constraints on Early Mars Climate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Edwin S. Kite","submitted_at":"2018-12-31T08:32:21Z","abstract_excerpt":"Early Mars climate research has well-defined goals (Mars Exploration Program Analysis Group 2018). Achieving these goals requires geologists and climate modelers to coordinate. Coordination is easier if results are expressed in terms of well-defined parameters. Key parameters include the following quantitative geologic constraints. (1) Cumulative post-3.4 Ga precipitation-sourced water runoff in some places exceeded 1 km column. (2) There is no single Early Mars climate problem: the traces of $\\ge$2 river-forming periods are seen. Relative to rivers that formed earlier in Mars history, rivers "},"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":"1812.11722","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-31T08:32:21Z","cross_cats_sorted":[],"title_canon_sha256":"0b4aefd16932c577a6b70e55aa2cc0db4e9f2a62497b006363b5ce4b04b576f5","abstract_canon_sha256":"55fc4a50df3b6f28a273485a0cc2c4c7c9f913ec7af195ab0ec93859dd1fed25"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:57:11.274999Z","signature_b64":"I3xDZftljPgrWRMu26D/QdNYF+RB/ZN/CnJ2rlFg8oo0tChwYGjDAIFYyubTNcR8cWoUWjO5/uuZkDIXv+2JBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b5d3825ce9ef688f53abf7a60b2a81ecd25765d156e8f51a86e7cb0e015afc18","last_reissued_at":"2026-05-17T23:57:11.274478Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:57:11.274478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Geologic Constraints on Early Mars Climate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Edwin S. Kite","submitted_at":"2018-12-31T08:32:21Z","abstract_excerpt":"Early Mars climate research has well-defined goals (Mars Exploration Program Analysis Group 2018). Achieving these goals requires geologists and climate modelers to coordinate. Coordination is easier if results are expressed in terms of well-defined parameters. Key parameters include the following quantitative geologic constraints. (1) Cumulative post-3.4 Ga precipitation-sourced water runoff in some places exceeded 1 km column. (2) There is no single Early Mars climate problem: the traces of $\\ge$2 river-forming periods are seen. Relative to rivers that formed earlier in Mars history, rivers "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.11722","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":"1812.11722","created_at":"2026-05-17T23:57:11.274557+00:00"},{"alias_kind":"arxiv_version","alias_value":"1812.11722v1","created_at":"2026-05-17T23:57:11.274557+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.11722","created_at":"2026-05-17T23:57:11.274557+00:00"},{"alias_kind":"pith_short_12","alias_value":"WXJYEXHJ55UI","created_at":"2026-05-18T12:33:01.666342+00:00"},{"alias_kind":"pith_short_16","alias_value":"WXJYEXHJ55UI6U5L","created_at":"2026-05-18T12:33:01.666342+00:00"},{"alias_kind":"pith_short_8","alias_value":"WXJYEXHJ","created_at":"2026-05-18T12:33:01.666342+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/WXJYEXHJ55UI6U5L66TAWKUB5T","json":"https://pith.science/pith/WXJYEXHJ55UI6U5L66TAWKUB5T.json","graph_json":"https://pith.science/api/pith-number/WXJYEXHJ55UI6U5L66TAWKUB5T/graph.json","events_json":"https://pith.science/api/pith-number/WXJYEXHJ55UI6U5L66TAWKUB5T/events.json","paper":"https://pith.science/paper/WXJYEXHJ"},"agent_actions":{"view_html":"https://pith.science/pith/WXJYEXHJ55UI6U5L66TAWKUB5T","download_json":"https://pith.science/pith/WXJYEXHJ55UI6U5L66TAWKUB5T.json","view_paper":"https://pith.science/paper/WXJYEXHJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1812.11722&json=true","fetch_graph":"https://pith.science/api/pith-number/WXJYEXHJ55UI6U5L66TAWKUB5T/graph.json","fetch_events":"https://pith.science/api/pith-number/WXJYEXHJ55UI6U5L66TAWKUB5T/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WXJYEXHJ55UI6U5L66TAWKUB5T/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WXJYEXHJ55UI6U5L66TAWKUB5T/action/storage_attestation","attest_author":"https://pith.science/pith/WXJYEXHJ55UI6U5L66TAWKUB5T/action/author_attestation","sign_citation":"https://pith.science/pith/WXJYEXHJ55UI6U5L66TAWKUB5T/action/citation_signature","submit_replication":"https://pith.science/pith/WXJYEXHJ55UI6U5L66TAWKUB5T/action/replication_record"}},"created_at":"2026-05-17T23:57:11.274557+00:00","updated_at":"2026-05-17T23:57:11.274557+00:00"}