{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:2QNIANK2EW7DUDLX7XVUP36AM3","short_pith_number":"pith:2QNIANK2","schema_version":"1.0","canonical_sha256":"d41a80355a25be3a0d77fdeb47efc066e317a613bd7e381771b916f39f0f15bc","source":{"kind":"arxiv","id":"1810.01974","version":1},"attestation_state":"computed","paper":{"title":"The geological and climatological case for a warmer and wetter early Mars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Ramses M. Ramirez, Robert A. Craddock","submitted_at":"2018-10-03T21:02:35Z","abstract_excerpt":"The climate of early Mars remains a topic of intense debate. Ancient terrains preserve landscapes consistent with stream channels, lake basins, and possibly even oceans, and thus the presence of liquid water flowing on the Martian surface 4 billion years ago. However, despite the geological evidence, determining how long climatic conditions supporting liquid water lasted remains uncertain. Climate models have struggled to generate sufficiently warm surface conditions given the faint young Sun - even assuming a denser early atmosphere. A warm climate could have potentially been sustained by sup"},"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":"1810.01974","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-10-03T21:02:35Z","cross_cats_sorted":[],"title_canon_sha256":"c28ea6bd24742a99772b461827c79247a6383e69f2fe757cf447530035b57614","abstract_canon_sha256":"71cf32595dc0d51f6a6e9cc63e82151ac6ca3b96553e6f91b518ab419aad7b0c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:06.704707Z","signature_b64":"egivTziaSpMAZ9gmSsuiy3ZHCVy7PrthRzpFikhb9UZzjrFxMNmVDvrvPbbOOmUgIyUtNpCdS9YUfyJ3lWTjBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d41a80355a25be3a0d77fdeb47efc066e317a613bd7e381771b916f39f0f15bc","last_reissued_at":"2026-05-18T00:04:06.703983Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:06.703983Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The geological and climatological case for a warmer and wetter early Mars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Ramses M. Ramirez, Robert A. Craddock","submitted_at":"2018-10-03T21:02:35Z","abstract_excerpt":"The climate of early Mars remains a topic of intense debate. Ancient terrains preserve landscapes consistent with stream channels, lake basins, and possibly even oceans, and thus the presence of liquid water flowing on the Martian surface 4 billion years ago. However, despite the geological evidence, determining how long climatic conditions supporting liquid water lasted remains uncertain. Climate models have struggled to generate sufficiently warm surface conditions given the faint young Sun - even assuming a denser early atmosphere. A warm climate could have potentially been sustained by sup"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.01974","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":"1810.01974","created_at":"2026-05-18T00:04:06.704119+00:00"},{"alias_kind":"arxiv_version","alias_value":"1810.01974v1","created_at":"2026-05-18T00:04:06.704119+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.01974","created_at":"2026-05-18T00:04:06.704119+00:00"},{"alias_kind":"pith_short_12","alias_value":"2QNIANK2EW7D","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_16","alias_value":"2QNIANK2EW7DUDLX","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_8","alias_value":"2QNIANK2","created_at":"2026-05-18T12:32:02.567920+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/2QNIANK2EW7DUDLX7XVUP36AM3","json":"https://pith.science/pith/2QNIANK2EW7DUDLX7XVUP36AM3.json","graph_json":"https://pith.science/api/pith-number/2QNIANK2EW7DUDLX7XVUP36AM3/graph.json","events_json":"https://pith.science/api/pith-number/2QNIANK2EW7DUDLX7XVUP36AM3/events.json","paper":"https://pith.science/paper/2QNIANK2"},"agent_actions":{"view_html":"https://pith.science/pith/2QNIANK2EW7DUDLX7XVUP36AM3","download_json":"https://pith.science/pith/2QNIANK2EW7DUDLX7XVUP36AM3.json","view_paper":"https://pith.science/paper/2QNIANK2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1810.01974&json=true","fetch_graph":"https://pith.science/api/pith-number/2QNIANK2EW7DUDLX7XVUP36AM3/graph.json","fetch_events":"https://pith.science/api/pith-number/2QNIANK2EW7DUDLX7XVUP36AM3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2QNIANK2EW7DUDLX7XVUP36AM3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2QNIANK2EW7DUDLX7XVUP36AM3/action/storage_attestation","attest_author":"https://pith.science/pith/2QNIANK2EW7DUDLX7XVUP36AM3/action/author_attestation","sign_citation":"https://pith.science/pith/2QNIANK2EW7DUDLX7XVUP36AM3/action/citation_signature","submit_replication":"https://pith.science/pith/2QNIANK2EW7DUDLX7XVUP36AM3/action/replication_record"}},"created_at":"2026-05-18T00:04:06.704119+00:00","updated_at":"2026-05-18T00:04:06.704119+00:00"}