{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:2OIX4IJAA3KYRI2FZIJ2FHW23Q","short_pith_number":"pith:2OIX4IJA","schema_version":"1.0","canonical_sha256":"d3917e212006d588a345ca13a29edadc2009214bb3702e770621c1f583ee4c6e","source":{"kind":"arxiv","id":"2409.06258","version":2},"attestation_state":"computed","paper":{"title":"Volatile-rich Sub-Neptunes as Hydrothermal Worlds: The Case of K2-18 b","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Artyom Aguichine, Christopher R. Glein, Cindy N. Luu, Hamish Innes, Jonathan J. Fortney, Joshua Krissansen-Totton, Julianne I. Moses, Ngoc Truong, Shang-Min Tsai, Xinting Yu, Xi Zhang","submitted_at":"2024-09-10T07:00:42Z","abstract_excerpt":"Temperate exoplanets between the sizes of Earth and Neptune, known as \"sub-Neptunes\", have emerged as intriguing targets for astrobiology. It is unknown whether these planets resemble Earth-like terrestrial worlds with a habitable surface, Neptune-like giant planets with deep atmospheres and no habitable surface, or something exotic in between. Recent JWST transmission spectroscopy observations of the canonical sub-Neptune, K2-18 b, revealed ~1% CH4, ~1% CO2, and a non-detection of CO in the atmosphere. While previous studies proposed that the observed atmospheric composition could help constr"},"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":"2409.06258","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-09-10T07:00:42Z","cross_cats_sorted":[],"title_canon_sha256":"e0e57a2d0d469db3de92aae83e1c905728fb07440b6dae77bb8f729883369f13","abstract_canon_sha256":"7938406206fcb5f6479a3d332f90cd4764ef633bd63c35ab7d3de795bf8e2ad6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:46:30.031897Z","signature_b64":"o6EFe+saqT8fUcvtsBbImf5e0+BpOmJX5EXQupX100B7hsXqXVQNDiXIGyrTS2J9FEutZJj/5sYk2CqSlHGCCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3917e212006d588a345ca13a29edadc2009214bb3702e770621c1f583ee4c6e","last_reissued_at":"2026-07-05T09:46:30.031385Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:46:30.031385Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Volatile-rich Sub-Neptunes as Hydrothermal Worlds: The Case of K2-18 b","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Artyom Aguichine, Christopher R. Glein, Cindy N. Luu, Hamish Innes, Jonathan J. Fortney, Joshua Krissansen-Totton, Julianne I. Moses, Ngoc Truong, Shang-Min Tsai, Xinting Yu, Xi Zhang","submitted_at":"2024-09-10T07:00:42Z","abstract_excerpt":"Temperate exoplanets between the sizes of Earth and Neptune, known as \"sub-Neptunes\", have emerged as intriguing targets for astrobiology. It is unknown whether these planets resemble Earth-like terrestrial worlds with a habitable surface, Neptune-like giant planets with deep atmospheres and no habitable surface, or something exotic in between. Recent JWST transmission spectroscopy observations of the canonical sub-Neptune, K2-18 b, revealed ~1% CH4, ~1% CO2, and a non-detection of CO in the atmosphere. While previous studies proposed that the observed atmospheric composition could help constr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.06258","kind":"arxiv","version":2},"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/2409.06258/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2409.06258","created_at":"2026-07-05T09:46:30.031452+00:00"},{"alias_kind":"arxiv_version","alias_value":"2409.06258v2","created_at":"2026-07-05T09:46:30.031452+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.06258","created_at":"2026-07-05T09:46:30.031452+00:00"},{"alias_kind":"pith_short_12","alias_value":"2OIX4IJAA3KY","created_at":"2026-07-05T09:46:30.031452+00:00"},{"alias_kind":"pith_short_16","alias_value":"2OIX4IJAA3KYRI2F","created_at":"2026-07-05T09:46:30.031452+00:00"},{"alias_kind":"pith_short_8","alias_value":"2OIX4IJA","created_at":"2026-07-05T09:46:30.031452+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/2OIX4IJAA3KYRI2FZIJ2FHW23Q","json":"https://pith.science/pith/2OIX4IJAA3KYRI2FZIJ2FHW23Q.json","graph_json":"https://pith.science/api/pith-number/2OIX4IJAA3KYRI2FZIJ2FHW23Q/graph.json","events_json":"https://pith.science/api/pith-number/2OIX4IJAA3KYRI2FZIJ2FHW23Q/events.json","paper":"https://pith.science/paper/2OIX4IJA"},"agent_actions":{"view_html":"https://pith.science/pith/2OIX4IJAA3KYRI2FZIJ2FHW23Q","download_json":"https://pith.science/pith/2OIX4IJAA3KYRI2FZIJ2FHW23Q.json","view_paper":"https://pith.science/paper/2OIX4IJA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2409.06258&json=true","fetch_graph":"https://pith.science/api/pith-number/2OIX4IJAA3KYRI2FZIJ2FHW23Q/graph.json","fetch_events":"https://pith.science/api/pith-number/2OIX4IJAA3KYRI2FZIJ2FHW23Q/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2OIX4IJAA3KYRI2FZIJ2FHW23Q/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2OIX4IJAA3KYRI2FZIJ2FHW23Q/action/storage_attestation","attest_author":"https://pith.science/pith/2OIX4IJAA3KYRI2FZIJ2FHW23Q/action/author_attestation","sign_citation":"https://pith.science/pith/2OIX4IJAA3KYRI2FZIJ2FHW23Q/action/citation_signature","submit_replication":"https://pith.science/pith/2OIX4IJAA3KYRI2FZIJ2FHW23Q/action/replication_record"}},"created_at":"2026-07-05T09:46:30.031452+00:00","updated_at":"2026-07-05T09:46:30.031452+00:00"}