{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:ODKQRAONXAQS5W4RJMVJCFTYF7","short_pith_number":"pith:ODKQRAON","canonical_record":{"source":{"id":"2209.05740","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2022-09-13T05:47:11Z","cross_cats_sorted":[],"title_canon_sha256":"57e2c52ccb4d2605717edd2fed68edc4f7a5ebb08fd10d06ce117f0ddb84c651","abstract_canon_sha256":"b22a1a38f8dd151501436273a9cd87461d89099f52c5c08edc13665ff7cc271b"},"schema_version":"1.0"},"canonical_sha256":"70d50881cdb8212edb914b2a9116782fcccfc2d7000507cf127944db2ef14652","source":{"kind":"arxiv","id":"2209.05740","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.05740","created_at":"2026-07-05T04:56:49Z"},{"alias_kind":"arxiv_version","alias_value":"2209.05740v1","created_at":"2026-07-05T04:56:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.05740","created_at":"2026-07-05T04:56:49Z"},{"alias_kind":"pith_short_12","alias_value":"ODKQRAONXAQS","created_at":"2026-07-05T04:56:49Z"},{"alias_kind":"pith_short_16","alias_value":"ODKQRAONXAQS5W4R","created_at":"2026-07-05T04:56:49Z"},{"alias_kind":"pith_short_8","alias_value":"ODKQRAON","created_at":"2026-07-05T04:56:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:ODKQRAONXAQS5W4RJMVJCFTYF7","target":"record","payload":{"canonical_record":{"source":{"id":"2209.05740","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2022-09-13T05:47:11Z","cross_cats_sorted":[],"title_canon_sha256":"57e2c52ccb4d2605717edd2fed68edc4f7a5ebb08fd10d06ce117f0ddb84c651","abstract_canon_sha256":"b22a1a38f8dd151501436273a9cd87461d89099f52c5c08edc13665ff7cc271b"},"schema_version":"1.0"},"canonical_sha256":"70d50881cdb8212edb914b2a9116782fcccfc2d7000507cf127944db2ef14652","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:56:49.775373Z","signature_b64":"o5z5QXBYIf/VPwHHmlkhjtQqxHHQEAjpRZt6p3tEZppg52no9RY5+7AlTRPN+cj9q9LRp6nAM+IaprstJlxHAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"70d50881cdb8212edb914b2a9116782fcccfc2d7000507cf127944db2ef14652","last_reissued_at":"2026-07-05T04:56:49.774959Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:56:49.774959Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2209.05740","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":"2026-07-05T04:56:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PWKCI0EL752sBUL/kL5QDQoep/dL5vTVFpC+V9lLki//zclGtfPQeLFveGFhTpqyrq7gUF2lqoSFWQyh26wkDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T21:28:20.162076Z"},"content_sha256":"13ae2581b80cb60b30aed12bdc32335fa2603da8e429ed1a45f57b88cb5db527","schema_version":"1.0","event_id":"sha256:13ae2581b80cb60b30aed12bdc32335fa2603da8e429ed1a45f57b88cb5db527"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:ODKQRAONXAQS5W4RJMVJCFTYF7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Direct Observation and Quantitative Measurement of OH Radical Desorption During the Ultraviolet Photolysis of Liquid Nonanoic Acid","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ao-ph","authors_text":"Naoki Numadate, Shinichi Enami, Shota Saito, Taka-aki Ishibashi, Tetsuya Hama, Yuki Nojima","submitted_at":"2022-09-13T05:47:11Z","abstract_excerpt":"Ultraviolet (UV) photolysis of fatty acid surfactants which cover the surfaces of atmospheric liquid aerosols and are found in the oceans such as nonanoic acid (NA) has recently been suggested as a source of hydroxyl (OH) radicals in the troposphere. We used laser-induced fluorescence to directly observe OH radicals desorbed from the surface of neat liquid NA as a primary photoproduct following 213 nm irradiation. The upper limit of photoreaction cross section for the OH radical desorption was estimated to be 9.0(4.1) $\\times$ 10$^{-22}$ cm$^2$, which is only 1.2$\\pm$0.8% of the photoreaction "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.05740","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2209.05740/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":"2026-07-05T04:56:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b/EqL/a2S87DMDWv5sCKOvHsyGFyhYoC0Ghf9S5+Glw+s4NsfL+KAqQoIHFyd9Ao2gXxEbtH11yIZ0ZymscHAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T21:28:20.163048Z"},"content_sha256":"7ef856531368939af1f77e3167b3b940ea6f4e5eaf97586398c6ec9609ff8593","schema_version":"1.0","event_id":"sha256:7ef856531368939af1f77e3167b3b940ea6f4e5eaf97586398c6ec9609ff8593"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ODKQRAONXAQS5W4RJMVJCFTYF7/bundle.json","state_url":"https://pith.science/pith/ODKQRAONXAQS5W4RJMVJCFTYF7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ODKQRAONXAQS5W4RJMVJCFTYF7/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":"2026-08-04T21:28:20Z","links":{"resolver":"https://pith.science/pith/ODKQRAONXAQS5W4RJMVJCFTYF7","bundle":"https://pith.science/pith/ODKQRAONXAQS5W4RJMVJCFTYF7/bundle.json","state":"https://pith.science/pith/ODKQRAONXAQS5W4RJMVJCFTYF7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ODKQRAONXAQS5W4RJMVJCFTYF7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:ODKQRAONXAQS5W4RJMVJCFTYF7","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":"b22a1a38f8dd151501436273a9cd87461d89099f52c5c08edc13665ff7cc271b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2022-09-13T05:47:11Z","title_canon_sha256":"57e2c52ccb4d2605717edd2fed68edc4f7a5ebb08fd10d06ce117f0ddb84c651"},"schema_version":"1.0","source":{"id":"2209.05740","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.05740","created_at":"2026-07-05T04:56:49Z"},{"alias_kind":"arxiv_version","alias_value":"2209.05740v1","created_at":"2026-07-05T04:56:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.05740","created_at":"2026-07-05T04:56:49Z"},{"alias_kind":"pith_short_12","alias_value":"ODKQRAONXAQS","created_at":"2026-07-05T04:56:49Z"},{"alias_kind":"pith_short_16","alias_value":"ODKQRAONXAQS5W4R","created_at":"2026-07-05T04:56:49Z"},{"alias_kind":"pith_short_8","alias_value":"ODKQRAON","created_at":"2026-07-05T04:56:49Z"}],"graph_snapshots":[{"event_id":"sha256:7ef856531368939af1f77e3167b3b940ea6f4e5eaf97586398c6ec9609ff8593","target":"graph","created_at":"2026-07-05T04:56:49Z","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/2209.05740/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ultraviolet (UV) photolysis of fatty acid surfactants which cover the surfaces of atmospheric liquid aerosols and are found in the oceans such as nonanoic acid (NA) has recently been suggested as a source of hydroxyl (OH) radicals in the troposphere. We used laser-induced fluorescence to directly observe OH radicals desorbed from the surface of neat liquid NA as a primary photoproduct following 213 nm irradiation. The upper limit of photoreaction cross section for the OH radical desorption was estimated to be 9.0(4.1) $\\times$ 10$^{-22}$ cm$^2$, which is only 1.2$\\pm$0.8% of the photoreaction ","authors_text":"Naoki Numadate, Shinichi Enami, Shota Saito, Taka-aki Ishibashi, Tetsuya Hama, Yuki Nojima","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2022-09-13T05:47:11Z","title":"Direct Observation and Quantitative Measurement of OH Radical Desorption During the Ultraviolet Photolysis of Liquid Nonanoic Acid"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.05740","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":"sha256:13ae2581b80cb60b30aed12bdc32335fa2603da8e429ed1a45f57b88cb5db527","target":"record","created_at":"2026-07-05T04:56:49Z","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":"b22a1a38f8dd151501436273a9cd87461d89099f52c5c08edc13665ff7cc271b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2022-09-13T05:47:11Z","title_canon_sha256":"57e2c52ccb4d2605717edd2fed68edc4f7a5ebb08fd10d06ce117f0ddb84c651"},"schema_version":"1.0","source":{"id":"2209.05740","kind":"arxiv","version":1}},"canonical_sha256":"70d50881cdb8212edb914b2a9116782fcccfc2d7000507cf127944db2ef14652","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"70d50881cdb8212edb914b2a9116782fcccfc2d7000507cf127944db2ef14652","first_computed_at":"2026-07-05T04:56:49.774959Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:56:49.774959Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o5z5QXBYIf/VPwHHmlkhjtQqxHHQEAjpRZt6p3tEZppg52no9RY5+7AlTRPN+cj9q9LRp6nAM+IaprstJlxHAg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:56:49.775373Z","signed_message":"canonical_sha256_bytes"},"source_id":"2209.05740","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:13ae2581b80cb60b30aed12bdc32335fa2603da8e429ed1a45f57b88cb5db527","sha256:7ef856531368939af1f77e3167b3b940ea6f4e5eaf97586398c6ec9609ff8593"],"state_sha256":"292fd20fcfe4c440bdf8dc4d9c834e94c6120d835264f22d647570352da31c52"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xch67gAvUomq6OKPvdD4K9Z5a1Z3nwWAX6Y4susK8ApKtIcqLWLQZsmvC2sLh/tHzxBaIA0f0nlCeQzYV/9vAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T21:28:20.169443Z","bundle_sha256":"0ca1bd55e3c4e49b8be00a3a2a7d91fc9d337ccaa3d59a0381f73c4999462954"}}