{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:CP7DFPRWEB7KJ5MBTNX5E25LWM","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":"0eb6f199b78f5d8e9788a4c3d4cdadc3b2f8e990a21b5a6b6d8eeee1fc8dfa19","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-01-11T12:14:23Z","title_canon_sha256":"7e737374e359ce88e1ce4a51215e8169c72d97e32dfa047214af8623987c4bd4"},"schema_version":"1.0","source":{"id":"2401.05864","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2401.05864","created_at":"2026-07-05T07:47:46Z"},{"alias_kind":"arxiv_version","alias_value":"2401.05864v3","created_at":"2026-07-05T07:47:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2401.05864","created_at":"2026-07-05T07:47:46Z"},{"alias_kind":"pith_short_12","alias_value":"CP7DFPRWEB7K","created_at":"2026-07-05T07:47:46Z"},{"alias_kind":"pith_short_16","alias_value":"CP7DFPRWEB7KJ5MB","created_at":"2026-07-05T07:47:46Z"},{"alias_kind":"pith_short_8","alias_value":"CP7DFPRW","created_at":"2026-07-05T07:47:46Z"}],"graph_snapshots":[{"event_id":"sha256:51c382cee7c852570b5083ed1b6b9167fc9fc118ded4019cdf53b91bf3e86081","target":"graph","created_at":"2026-07-05T07:47:46Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2401.05864/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Mildly irradiated mini-Neptunes have densities potentially consistent with them hosting substantial liquid water oceans (`Hycean' planets). The presence of CO2 and simultaneous absence of ammonia (NH3) in their atmospheres has been proposed as a fingerprint of such worlds. JWST observations of K2-18b, the archetypal Hycean, have found the presence of CO2 and the depletion of NH3 to <100 ppm; hence, it has been inferred that this planet may host liquid water oceans. In contrast, climate modelling suggests that many of these mini-Neptunes, including K2-18b, may likely be too hot to host liquid w","authors_text":"Dan J. Bower, Harrison Nicholls, Oliver Shorttle, Sean Jordan, Tim Lichtenberg","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-01-11T12:14:23Z","title":"Distinguishing oceans of water from magma on mini-Neptune K2-18b"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2401.05864","kind":"arxiv","version":3},"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:ab9a5832b0de5c596e2d61c1a01a2d2230f7dcacd6db2ab6c15b44ed0d642bbd","target":"record","created_at":"2026-07-05T07:47:46Z","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":"0eb6f199b78f5d8e9788a4c3d4cdadc3b2f8e990a21b5a6b6d8eeee1fc8dfa19","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-01-11T12:14:23Z","title_canon_sha256":"7e737374e359ce88e1ce4a51215e8169c72d97e32dfa047214af8623987c4bd4"},"schema_version":"1.0","source":{"id":"2401.05864","kind":"arxiv","version":3}},"canonical_sha256":"13fe32be36207ea4f5819b6fd26babb32cfff1844fcd846a9b5c73f99ea1c06e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"13fe32be36207ea4f5819b6fd26babb32cfff1844fcd846a9b5c73f99ea1c06e","first_computed_at":"2026-07-05T07:47:46.398489Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:47:46.398489Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OBG8EUoUm06zIWjOyLjiwqQGIJRG8DhW4U74q6z0Ns8y+/BaJAMgESJtd4Rhiktzw8G/9rHA8NmAy3TCEwE7DA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:47:46.398996Z","signed_message":"canonical_sha256_bytes"},"source_id":"2401.05864","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ab9a5832b0de5c596e2d61c1a01a2d2230f7dcacd6db2ab6c15b44ed0d642bbd","sha256:51c382cee7c852570b5083ed1b6b9167fc9fc118ded4019cdf53b91bf3e86081"],"state_sha256":"bc579ad9ca8706a9cfd2f25f32bbd7421158cae2bcefae055b1bdda74c32b1d8"}