{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:OXUTCC3EN6VWK6OT7AM5HDCC5J","short_pith_number":"pith:OXUTCC3E","canonical_record":{"source":{"id":"2507.08837","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-07-07T19:18:47Z","cross_cats_sorted":[],"title_canon_sha256":"7bb61485a53f56e8021b826b70ed570a240a5fe33ff9055e432d598d99780d60","abstract_canon_sha256":"df01233528bd29db89e14f98c54534f947990592100067489cb32b9b828ce0ff"},"schema_version":"1.0"},"canonical_sha256":"75e9310b646fab6579d3f819d38c42ea5d66cfd447e8c14869c418ff59f1765f","source":{"kind":"arxiv","id":"2507.08837","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.08837","created_at":"2026-07-05T11:41:44Z"},{"alias_kind":"arxiv_version","alias_value":"2507.08837v3","created_at":"2026-07-05T11:41:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.08837","created_at":"2026-07-05T11:41:44Z"},{"alias_kind":"pith_short_12","alias_value":"OXUTCC3EN6VW","created_at":"2026-07-05T11:41:44Z"},{"alias_kind":"pith_short_16","alias_value":"OXUTCC3EN6VWK6OT","created_at":"2026-07-05T11:41:44Z"},{"alias_kind":"pith_short_8","alias_value":"OXUTCC3E","created_at":"2026-07-05T11:41:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:OXUTCC3EN6VWK6OT7AM5HDCC5J","target":"record","payload":{"canonical_record":{"source":{"id":"2507.08837","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-07-07T19:18:47Z","cross_cats_sorted":[],"title_canon_sha256":"7bb61485a53f56e8021b826b70ed570a240a5fe33ff9055e432d598d99780d60","abstract_canon_sha256":"df01233528bd29db89e14f98c54534f947990592100067489cb32b9b828ce0ff"},"schema_version":"1.0"},"canonical_sha256":"75e9310b646fab6579d3f819d38c42ea5d66cfd447e8c14869c418ff59f1765f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:41:44.408888Z","signature_b64":"z4nocw8ew36gxtIokZtryb9yJSyC2IxbtZQLKyTzPNdrUgTMGPP7bCyQqupUfS5R1t7jCihiDhLoiEFZyRvaCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"75e9310b646fab6579d3f819d38c42ea5d66cfd447e8c14869c418ff59f1765f","last_reissued_at":"2026-07-05T11:41:44.408274Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:41:44.408274Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.08837","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:41:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EMvmIGZ0PS9nGl69gBrr8V71Hagg0PzgeJ11BXyYyP0ZFttZDo3ag6gQVZ+0R7Nfk0cc3jms37Bixap5vPa5Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T22:42:07.828703Z"},"content_sha256":"e3d71ca4545031a0115cb0f8ce10f4940332843f268bf99bfa0f9b221ab46717","schema_version":"1.0","event_id":"sha256:e3d71ca4545031a0115cb0f8ce10f4940332843f268bf99bfa0f9b221ab46717"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:OXUTCC3EN6VWK6OT7AM5HDCC5J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A metal-poor atmosphere with a hot interior for a young sub-Neptune progenitor: JWST/NIRSpec transmission spectrum of V1298 Tau b","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Adina D. Feinstein, Allona Vazan, Antonija Oklop\\v{c}i\\'c, Erik A. Petigura, Gregory W. Henry, Hilke E. Schlichting, Hinna Shivkumar, Jacob L. Bean, James T. Sikora, Jayesh M. Goyal, Jean-Michel D\\'esert, John H. Livingston, Jonathan J. Fortney, Michael R. Line, Qiao Xue, Robin Baeyens, Sagnick Mukherjee, Saugata Barat, Swaroop Avarsekar, Trevor David, William Misener, Yui Kawashima","submitted_at":"2025-07-07T19:18:47Z","abstract_excerpt":"We present the JWST/NIRSpec G395H transmission spectrum of the young (10 - 20 Myr old) transiting planet V1298 Tau b (9.85+/-0.35 Re, Teq=670K). Combined HST and JWST observations reveal a haze free, H/He dominated atmosphere with a large scale height (~1500km), allowing detection of CO2 (35 sigma), H2O (30 sigma), CO (10 sigma), CH4 (6 sigma), SO2 (4 sigma) and OCS (3.5 sigma). Our observations probe several scale heights (~4.4 in the CO2 4.3 microns and ~3 in the 2.7 micron water band). The planet's mass, inferred from atmospheric scale height using free retrieval and grid modelling is 12+/-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.08837","kind":"arxiv","version":3},"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/2507.08837/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:41:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G1TI3OH7OR5ijzBauYMKoYm6qx1hIIF9ZgyaIB3rLu5u63R7kNkbdEkH55kEkrM0u93M/dofG6NPUY3+PlvsDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T22:42:07.829278Z"},"content_sha256":"09c4391bdc57d95f929724532453cbf3064f46b7e0e8d07fd234c80bc6cd5ba3","schema_version":"1.0","event_id":"sha256:09c4391bdc57d95f929724532453cbf3064f46b7e0e8d07fd234c80bc6cd5ba3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OXUTCC3EN6VWK6OT7AM5HDCC5J/bundle.json","state_url":"https://pith.science/pith/OXUTCC3EN6VWK6OT7AM5HDCC5J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OXUTCC3EN6VWK6OT7AM5HDCC5J/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-22T22:42:07Z","links":{"resolver":"https://pith.science/pith/OXUTCC3EN6VWK6OT7AM5HDCC5J","bundle":"https://pith.science/pith/OXUTCC3EN6VWK6OT7AM5HDCC5J/bundle.json","state":"https://pith.science/pith/OXUTCC3EN6VWK6OT7AM5HDCC5J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OXUTCC3EN6VWK6OT7AM5HDCC5J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:OXUTCC3EN6VWK6OT7AM5HDCC5J","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":"df01233528bd29db89e14f98c54534f947990592100067489cb32b9b828ce0ff","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-07-07T19:18:47Z","title_canon_sha256":"7bb61485a53f56e8021b826b70ed570a240a5fe33ff9055e432d598d99780d60"},"schema_version":"1.0","source":{"id":"2507.08837","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.08837","created_at":"2026-07-05T11:41:44Z"},{"alias_kind":"arxiv_version","alias_value":"2507.08837v3","created_at":"2026-07-05T11:41:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.08837","created_at":"2026-07-05T11:41:44Z"},{"alias_kind":"pith_short_12","alias_value":"OXUTCC3EN6VW","created_at":"2026-07-05T11:41:44Z"},{"alias_kind":"pith_short_16","alias_value":"OXUTCC3EN6VWK6OT","created_at":"2026-07-05T11:41:44Z"},{"alias_kind":"pith_short_8","alias_value":"OXUTCC3E","created_at":"2026-07-05T11:41:44Z"}],"graph_snapshots":[{"event_id":"sha256:09c4391bdc57d95f929724532453cbf3064f46b7e0e8d07fd234c80bc6cd5ba3","target":"graph","created_at":"2026-07-05T11:41:44Z","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/2507.08837/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the JWST/NIRSpec G395H transmission spectrum of the young (10 - 20 Myr old) transiting planet V1298 Tau b (9.85+/-0.35 Re, Teq=670K). Combined HST and JWST observations reveal a haze free, H/He dominated atmosphere with a large scale height (~1500km), allowing detection of CO2 (35 sigma), H2O (30 sigma), CO (10 sigma), CH4 (6 sigma), SO2 (4 sigma) and OCS (3.5 sigma). Our observations probe several scale heights (~4.4 in the CO2 4.3 microns and ~3 in the 2.7 micron water band). The planet's mass, inferred from atmospheric scale height using free retrieval and grid modelling is 12+/-","authors_text":"Adina D. Feinstein, Allona Vazan, Antonija Oklop\\v{c}i\\'c, Erik A. Petigura, Gregory W. Henry, Hilke E. Schlichting, Hinna Shivkumar, Jacob L. Bean, James T. Sikora, Jayesh M. Goyal, Jean-Michel D\\'esert, John H. Livingston, Jonathan J. Fortney, Michael R. Line, Qiao Xue, Robin Baeyens, Sagnick Mukherjee, Saugata Barat, Swaroop Avarsekar, Trevor David, William Misener, Yui Kawashima","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-07-07T19:18:47Z","title":"A metal-poor atmosphere with a hot interior for a young sub-Neptune progenitor: JWST/NIRSpec transmission spectrum of V1298 Tau b"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.08837","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:e3d71ca4545031a0115cb0f8ce10f4940332843f268bf99bfa0f9b221ab46717","target":"record","created_at":"2026-07-05T11:41:44Z","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":"df01233528bd29db89e14f98c54534f947990592100067489cb32b9b828ce0ff","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-07-07T19:18:47Z","title_canon_sha256":"7bb61485a53f56e8021b826b70ed570a240a5fe33ff9055e432d598d99780d60"},"schema_version":"1.0","source":{"id":"2507.08837","kind":"arxiv","version":3}},"canonical_sha256":"75e9310b646fab6579d3f819d38c42ea5d66cfd447e8c14869c418ff59f1765f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"75e9310b646fab6579d3f819d38c42ea5d66cfd447e8c14869c418ff59f1765f","first_computed_at":"2026-07-05T11:41:44.408274Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:41:44.408274Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"z4nocw8ew36gxtIokZtryb9yJSyC2IxbtZQLKyTzPNdrUgTMGPP7bCyQqupUfS5R1t7jCihiDhLoiEFZyRvaCw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:41:44.408888Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.08837","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e3d71ca4545031a0115cb0f8ce10f4940332843f268bf99bfa0f9b221ab46717","sha256:09c4391bdc57d95f929724532453cbf3064f46b7e0e8d07fd234c80bc6cd5ba3"],"state_sha256":"eafad8728c884361c862a546e8c6aef102636a1424482c9a48daf2462f888654"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p+DfSFAn0QaCwhiWM0OIFAKv9YnwrIBZpQjaPREzhPjvdNTdRSIx5hFfRTouKZVS78Y/nBKrRBLAWuRldLaLDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T22:42:07.833300Z","bundle_sha256":"465994a94f597ba6d8c3a59a9d82b50510611183306d65d651a94c6f34628588"}}