{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:PEVY4IP66XG7776LAMO2WEO3W2","short_pith_number":"pith:PEVY4IP6","canonical_record":{"source":{"id":"1812.05382","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-13T12:37:40Z","cross_cats_sorted":[],"title_canon_sha256":"e58007a5eb80b37d88fabc866f90efe8eccb20bf477a50ac691bc85ee3897ed2","abstract_canon_sha256":"6612df076a816a0c9f88d4be5391b9fb7263cd506686d01125d478994efd1144"},"schema_version":"1.0"},"canonical_sha256":"792b8e21fef5cdffffcb031dab11dbb6a9d63023f874d1b0b51940b889b739e3","source":{"kind":"arxiv","id":"1812.05382","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.05382","created_at":"2026-05-17T23:58:20Z"},{"alias_kind":"arxiv_version","alias_value":"1812.05382v1","created_at":"2026-05-17T23:58:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.05382","created_at":"2026-05-17T23:58:20Z"},{"alias_kind":"pith_short_12","alias_value":"PEVY4IP66XG7","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"PEVY4IP66XG7776L","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"PEVY4IP6","created_at":"2026-05-18T12:32:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:PEVY4IP66XG7776LAMO2WEO3W2","target":"record","payload":{"canonical_record":{"source":{"id":"1812.05382","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-13T12:37:40Z","cross_cats_sorted":[],"title_canon_sha256":"e58007a5eb80b37d88fabc866f90efe8eccb20bf477a50ac691bc85ee3897ed2","abstract_canon_sha256":"6612df076a816a0c9f88d4be5391b9fb7263cd506686d01125d478994efd1144"},"schema_version":"1.0"},"canonical_sha256":"792b8e21fef5cdffffcb031dab11dbb6a9d63023f874d1b0b51940b889b739e3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:58:20.423311Z","signature_b64":"Lj6wCo9dDtaYPe9OD1ZClVFJvvZkh6WkhC+XiBLwDMlHHtnNRZUDcH9lXeYKzWZ8cuVU/mg1Zz4oeW9PcZT2Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"792b8e21fef5cdffffcb031dab11dbb6a9d63023f874d1b0b51940b889b739e3","last_reissued_at":"2026-05-17T23:58:20.422907Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:58:20.422907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.05382","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:58:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y/HRqRO8zIwpWgXOY8J7ND2RXX2R6pXv851a/lZMWfTDcCTcgW6oBUVrd87P+lOX0w572ZVbOVymERFmNvE9CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T09:18:20.924616Z"},"content_sha256":"612e27350fc2e0ccbfbcd311da67d7477d11155dfc3d836f804aa09404245146","schema_version":"1.0","event_id":"sha256:612e27350fc2e0ccbfbcd311da67d7477d11155dfc3d836f804aa09404245146"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:PEVY4IP66XG7776LAMO2WEO3W2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probable detection of hydrogen sulphide (H$_2$S) in Neptune's atmosphere","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Bruno B\\'ezard, Daniel Toledo, Glenn S. Orton, Leigh N. Fletcher, Nicholas A. Teanby, Patrick G.J. Irwin, Ryan Garland","submitted_at":"2018-12-13T12:37:40Z","abstract_excerpt":"Recent analysis of Gemini-North/NIFS H-band (1.45 - 1.8 $\\mu$m) observations of Uranus, recorded in 2010, with recently updated line data has revealed the spectral signature of hydrogen sulphide (H$_2$S) in Uranus's atmosphere (Irwin et al., 2018). Here, we extend this analysis to Gemini-North/NIFS observations of Neptune recorded in 2009 and find a similar detection of H$_2$S spectral absorption features in the 1.57 - 1.58 $\\mu$m range, albeit slightly less evident, and retrieve a mole fraction of $\\sim1-3$ ppm at the cloud tops. We find a much clearer detection (and much higher retrieved col"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.05382","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:58:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L93zsCDq43mnRBXqvoWMvbse1aZrHQ4y61tBfFqCftPy4sLySSPZ9sh+hrSNw3R5KuAF1QD/HMa74WUszbhjBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T09:18:20.925344Z"},"content_sha256":"eabeaae5c6b63f189d068c5b7039b5cd978798e6d1f5ca07bb264e8b49cdc8c9","schema_version":"1.0","event_id":"sha256:eabeaae5c6b63f189d068c5b7039b5cd978798e6d1f5ca07bb264e8b49cdc8c9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PEVY4IP66XG7776LAMO2WEO3W2/bundle.json","state_url":"https://pith.science/pith/PEVY4IP66XG7776LAMO2WEO3W2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PEVY4IP66XG7776LAMO2WEO3W2/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":"2026-05-25T09:18:20Z","links":{"resolver":"https://pith.science/pith/PEVY4IP66XG7776LAMO2WEO3W2","bundle":"https://pith.science/pith/PEVY4IP66XG7776LAMO2WEO3W2/bundle.json","state":"https://pith.science/pith/PEVY4IP66XG7776LAMO2WEO3W2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PEVY4IP66XG7776LAMO2WEO3W2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:PEVY4IP66XG7776LAMO2WEO3W2","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":"6612df076a816a0c9f88d4be5391b9fb7263cd506686d01125d478994efd1144","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-13T12:37:40Z","title_canon_sha256":"e58007a5eb80b37d88fabc866f90efe8eccb20bf477a50ac691bc85ee3897ed2"},"schema_version":"1.0","source":{"id":"1812.05382","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.05382","created_at":"2026-05-17T23:58:20Z"},{"alias_kind":"arxiv_version","alias_value":"1812.05382v1","created_at":"2026-05-17T23:58:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.05382","created_at":"2026-05-17T23:58:20Z"},{"alias_kind":"pith_short_12","alias_value":"PEVY4IP66XG7","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"PEVY4IP66XG7776L","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"PEVY4IP6","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:eabeaae5c6b63f189d068c5b7039b5cd978798e6d1f5ca07bb264e8b49cdc8c9","target":"graph","created_at":"2026-05-17T23:58:20Z","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":"Recent analysis of Gemini-North/NIFS H-band (1.45 - 1.8 $\\mu$m) observations of Uranus, recorded in 2010, with recently updated line data has revealed the spectral signature of hydrogen sulphide (H$_2$S) in Uranus's atmosphere (Irwin et al., 2018). Here, we extend this analysis to Gemini-North/NIFS observations of Neptune recorded in 2009 and find a similar detection of H$_2$S spectral absorption features in the 1.57 - 1.58 $\\mu$m range, albeit slightly less evident, and retrieve a mole fraction of $\\sim1-3$ ppm at the cloud tops. We find a much clearer detection (and much higher retrieved col","authors_text":"Bruno B\\'ezard, Daniel Toledo, Glenn S. Orton, Leigh N. Fletcher, Nicholas A. Teanby, Patrick G.J. Irwin, Ryan Garland","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-13T12:37:40Z","title":"Probable detection of hydrogen sulphide (H$_2$S) in Neptune's atmosphere"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.05382","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":"sha256:612e27350fc2e0ccbfbcd311da67d7477d11155dfc3d836f804aa09404245146","target":"record","created_at":"2026-05-17T23:58:20Z","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":"6612df076a816a0c9f88d4be5391b9fb7263cd506686d01125d478994efd1144","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-13T12:37:40Z","title_canon_sha256":"e58007a5eb80b37d88fabc866f90efe8eccb20bf477a50ac691bc85ee3897ed2"},"schema_version":"1.0","source":{"id":"1812.05382","kind":"arxiv","version":1}},"canonical_sha256":"792b8e21fef5cdffffcb031dab11dbb6a9d63023f874d1b0b51940b889b739e3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"792b8e21fef5cdffffcb031dab11dbb6a9d63023f874d1b0b51940b889b739e3","first_computed_at":"2026-05-17T23:58:20.422907Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:58:20.422907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Lj6wCo9dDtaYPe9OD1ZClVFJvvZkh6WkhC+XiBLwDMlHHtnNRZUDcH9lXeYKzWZ8cuVU/mg1Zz4oeW9PcZT2Cw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:58:20.423311Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.05382","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:612e27350fc2e0ccbfbcd311da67d7477d11155dfc3d836f804aa09404245146","sha256:eabeaae5c6b63f189d068c5b7039b5cd978798e6d1f5ca07bb264e8b49cdc8c9"],"state_sha256":"c9ac93c8cc8e0367866a8cbdb8f0588361424f9a306fe5d4cefd9048d0343047"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5XMdkly9OJ8mkXEGAN1YOoj3nc8KqHpblMqT3IKd7vCL4Br+88DdEB4CrkvGuZu58+vlpSoNoN+SuOC5a4q9Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T09:18:20.930205Z","bundle_sha256":"917b705b20adf6c9d315ae424679aba3be08cb3c0da54389045dbf3e837095e9"}}