{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:NDXKKUYPWNIFTOL3QD2XYDYTTZ","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":"1ad52461d6fead5cdf46ac0a89e4ef5e378085a9701b18e07045be039f7cb776","cross_cats_sorted":["physics.geo-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-05-28T22:28:56Z","title_canon_sha256":"0f5a083b2ba65d0a01697a5662bcad27e9b8ee1c87c8fbe7ffbb3ff234e2f996"},"schema_version":"1.0","source":{"id":"1205.6226","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.6226","created_at":"2026-05-18T01:57:16Z"},{"alias_kind":"arxiv_version","alias_value":"1205.6226v1","created_at":"2026-05-18T01:57:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.6226","created_at":"2026-05-18T01:57:16Z"},{"alias_kind":"pith_short_12","alias_value":"NDXKKUYPWNIF","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"NDXKKUYPWNIFTOL3","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"NDXKKUYP","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:9ce111991e387c91367cd121c8be05b4bc117670f36d2234662264834a472c2a","target":"graph","created_at":"2026-05-18T01:57:16Z","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":"A model for the formation and distribution of sedimentary rocks on Mars is proposed. The rate-limiting step is supply of liquid water from seasonal melting of snow or ice. The model is run for a O(10^2) mbar pure CO2 atmosphere, dusty snow, and solar luminosity reduced by 23%. For these conditions snow only melts near the equator, and only when obliquity >40 degrees, eccentricity >0.12, and perihelion occurs near equinox. These requirements for melting are satisfied by 0.01-20% of the probability distribution of Mars' past spin-orbit parameters. Total melt production is sufficient to account f","authors_text":"Edwin S. Kite, Itay Halevy, Melinda A. Kahre, Michael J. Wolff, Michael Manga","cross_cats":["physics.geo-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-05-28T22:28:56Z","title":"Seasonal melting and the formation of sedimentary rocks on Mars, with predictions for the Gale Crater mound"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.6226","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":"sha256:38dd7e010453c3f41b3f4a590b07d01abc41ff1b299c9d689e53d16313f3bab1","target":"record","created_at":"2026-05-18T01:57:16Z","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":"1ad52461d6fead5cdf46ac0a89e4ef5e378085a9701b18e07045be039f7cb776","cross_cats_sorted":["physics.geo-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2012-05-28T22:28:56Z","title_canon_sha256":"0f5a083b2ba65d0a01697a5662bcad27e9b8ee1c87c8fbe7ffbb3ff234e2f996"},"schema_version":"1.0","source":{"id":"1205.6226","kind":"arxiv","version":1}},"canonical_sha256":"68eea5530fb35059b97b80f57c0f139e485b20379505c9d23dd56b88b9eb1f9c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"68eea5530fb35059b97b80f57c0f139e485b20379505c9d23dd56b88b9eb1f9c","first_computed_at":"2026-05-18T01:57:16.372931Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:16.372931Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HU97F/fJwJvhebnkZMIkeygqUvxmSip/E/PRx1gk4tMzGtWcmg+l4va6sRtG/nCAgywtcRSCnQjdzmoFw8pfBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:16.373518Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.6226","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:38dd7e010453c3f41b3f4a590b07d01abc41ff1b299c9d689e53d16313f3bab1","sha256:9ce111991e387c91367cd121c8be05b4bc117670f36d2234662264834a472c2a"],"state_sha256":"f3c3e63b4f3eb30ee89b47ddb4594fdc03f3ed167810f4f8fc85405456d1a20c"}