{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:5GHGA5HZ5JTTVOM7I76TWZ2XDX","short_pith_number":"pith:5GHGA5HZ","canonical_record":{"source":{"id":"2503.22033","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2025-03-27T22:58:16Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"64369c48f34febe1a2945162cc4e7134b3eed23c0c0395cfa5e6b9c7d6c552f6","abstract_canon_sha256":"9c8ce14b7f7d465f880344a60f6ead8fd519e47a2e9e3b701c220a44c2a4e046"},"schema_version":"1.0"},"canonical_sha256":"e98e6074f9ea673ab99f47fd3b67571dea63f3786a04de8d6c84885509a7c98b","source":{"kind":"arxiv","id":"2503.22033","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.22033","created_at":"2026-07-05T10:40:46Z"},{"alias_kind":"arxiv_version","alias_value":"2503.22033v1","created_at":"2026-07-05T10:40:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.22033","created_at":"2026-07-05T10:40:46Z"},{"alias_kind":"pith_short_12","alias_value":"5GHGA5HZ5JTT","created_at":"2026-07-05T10:40:46Z"},{"alias_kind":"pith_short_16","alias_value":"5GHGA5HZ5JTTVOM7","created_at":"2026-07-05T10:40:46Z"},{"alias_kind":"pith_short_8","alias_value":"5GHGA5HZ","created_at":"2026-07-05T10:40:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:5GHGA5HZ5JTTVOM7I76TWZ2XDX","target":"record","payload":{"canonical_record":{"source":{"id":"2503.22033","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2025-03-27T22:58:16Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"64369c48f34febe1a2945162cc4e7134b3eed23c0c0395cfa5e6b9c7d6c552f6","abstract_canon_sha256":"9c8ce14b7f7d465f880344a60f6ead8fd519e47a2e9e3b701c220a44c2a4e046"},"schema_version":"1.0"},"canonical_sha256":"e98e6074f9ea673ab99f47fd3b67571dea63f3786a04de8d6c84885509a7c98b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:40:46.210624Z","signature_b64":"ftIKfObEUL6Ok6XfhI0Z30pJJWmpCMjfc7HeBamLVkZuaYO14ZPyCuh9EKrE0If90u+0qFk5ItBn1lMPq+VPBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e98e6074f9ea673ab99f47fd3b67571dea63f3786a04de8d6c84885509a7c98b","last_reissued_at":"2026-07-05T10:40:46.210062Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:40:46.210062Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.22033","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":"2026-07-05T10:40:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LvknGtZuTk/4FqjrwM/i7y6b+ZD8lgaDV8rdQ465GyCvDpI0R70A/PxfSpWulZI8FJMlR2ahuK3Pq7hzbDbICQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T06:57:28.756841Z"},"content_sha256":"a683c2c6ba1bfcc18a2b06ddc49403379da01332d024f4d52861cb0def7e6b39","schema_version":"1.0","event_id":"sha256:a683c2c6ba1bfcc18a2b06ddc49403379da01332d024f4d52861cb0def7e6b39"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:5GHGA5HZ5JTTVOM7I76TWZ2XDX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radiative stabilization of the indenyl cation: Recurrent fluorescence in a closed-shell polycyclic aromatic hydrocarbon","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"physics.chem-ph","authors_text":"Arun Subramani, Chang Liu, Eleanor K. Ashworth, Henning Zettergren, Henrik Cederquist, James N. Bull, Mark H. Stockett, Samuel J. P. Marlton","submitted_at":"2025-03-27T22:58:16Z","abstract_excerpt":"Several small polycyclic aromatic hydrocarbons (PAHs) with closed-shell electronic structure have been identified in the cold, dark environment Taurus Molecular Cloud-1. We measure efficient radiative cooling through the combination of recurrent fluorescence (RF) and IR emission in the closed-shell indenyl cation (C$_{9}$H$_{7}^{+}$), finding good agreement with a master equation model including molecular dynamics trajectories to describe internal-energy dependent properties for RF. We find that C$_{9}$H$_{7}^{+}$ formed with up to $E_{c}=5.85$\\,eV vibrational energy, which is $\\approx$2\\,eV a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.22033","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/2503.22033/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":"2026-07-05T10:40:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6urWU568G/np1JTwF3I9rug2lxrsP2a66yfudyc/6sJ3ItvIqOAzXeoXfz7+WKscIrKSJZLqWJB+5qpUBzExDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T06:57:28.757406Z"},"content_sha256":"a3736090f39a64e7c143d0f1433f707de24181830500e98cee8d28559cb94184","schema_version":"1.0","event_id":"sha256:a3736090f39a64e7c143d0f1433f707de24181830500e98cee8d28559cb94184"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5GHGA5HZ5JTTVOM7I76TWZ2XDX/bundle.json","state_url":"https://pith.science/pith/5GHGA5HZ5JTTVOM7I76TWZ2XDX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5GHGA5HZ5JTTVOM7I76TWZ2XDX/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":"2026-08-09T06:57:28Z","links":{"resolver":"https://pith.science/pith/5GHGA5HZ5JTTVOM7I76TWZ2XDX","bundle":"https://pith.science/pith/5GHGA5HZ5JTTVOM7I76TWZ2XDX/bundle.json","state":"https://pith.science/pith/5GHGA5HZ5JTTVOM7I76TWZ2XDX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5GHGA5HZ5JTTVOM7I76TWZ2XDX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:5GHGA5HZ5JTTVOM7I76TWZ2XDX","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":"9c8ce14b7f7d465f880344a60f6ead8fd519e47a2e9e3b701c220a44c2a4e046","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2025-03-27T22:58:16Z","title_canon_sha256":"64369c48f34febe1a2945162cc4e7134b3eed23c0c0395cfa5e6b9c7d6c552f6"},"schema_version":"1.0","source":{"id":"2503.22033","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.22033","created_at":"2026-07-05T10:40:46Z"},{"alias_kind":"arxiv_version","alias_value":"2503.22033v1","created_at":"2026-07-05T10:40:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.22033","created_at":"2026-07-05T10:40:46Z"},{"alias_kind":"pith_short_12","alias_value":"5GHGA5HZ5JTT","created_at":"2026-07-05T10:40:46Z"},{"alias_kind":"pith_short_16","alias_value":"5GHGA5HZ5JTTVOM7","created_at":"2026-07-05T10:40:46Z"},{"alias_kind":"pith_short_8","alias_value":"5GHGA5HZ","created_at":"2026-07-05T10:40:46Z"}],"graph_snapshots":[{"event_id":"sha256:a3736090f39a64e7c143d0f1433f707de24181830500e98cee8d28559cb94184","target":"graph","created_at":"2026-07-05T10:40:46Z","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/2503.22033/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Several small polycyclic aromatic hydrocarbons (PAHs) with closed-shell electronic structure have been identified in the cold, dark environment Taurus Molecular Cloud-1. We measure efficient radiative cooling through the combination of recurrent fluorescence (RF) and IR emission in the closed-shell indenyl cation (C$_{9}$H$_{7}^{+}$), finding good agreement with a master equation model including molecular dynamics trajectories to describe internal-energy dependent properties for RF. We find that C$_{9}$H$_{7}^{+}$ formed with up to $E_{c}=5.85$\\,eV vibrational energy, which is $\\approx$2\\,eV a","authors_text":"Arun Subramani, Chang Liu, Eleanor K. Ashworth, Henning Zettergren, Henrik Cederquist, James N. Bull, Mark H. Stockett, Samuel J. P. Marlton","cross_cats":["astro-ph.GA"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2025-03-27T22:58:16Z","title":"Radiative stabilization of the indenyl cation: Recurrent fluorescence in a closed-shell polycyclic aromatic hydrocarbon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.22033","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:a683c2c6ba1bfcc18a2b06ddc49403379da01332d024f4d52861cb0def7e6b39","target":"record","created_at":"2026-07-05T10:40:46Z","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":"9c8ce14b7f7d465f880344a60f6ead8fd519e47a2e9e3b701c220a44c2a4e046","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2025-03-27T22:58:16Z","title_canon_sha256":"64369c48f34febe1a2945162cc4e7134b3eed23c0c0395cfa5e6b9c7d6c552f6"},"schema_version":"1.0","source":{"id":"2503.22033","kind":"arxiv","version":1}},"canonical_sha256":"e98e6074f9ea673ab99f47fd3b67571dea63f3786a04de8d6c84885509a7c98b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e98e6074f9ea673ab99f47fd3b67571dea63f3786a04de8d6c84885509a7c98b","first_computed_at":"2026-07-05T10:40:46.210062Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:40:46.210062Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ftIKfObEUL6Ok6XfhI0Z30pJJWmpCMjfc7HeBamLVkZuaYO14ZPyCuh9EKrE0If90u+0qFk5ItBn1lMPq+VPBw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:40:46.210624Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.22033","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a683c2c6ba1bfcc18a2b06ddc49403379da01332d024f4d52861cb0def7e6b39","sha256:a3736090f39a64e7c143d0f1433f707de24181830500e98cee8d28559cb94184"],"state_sha256":"608306cfd34ce467fb7e7f9624933cb66e485576ce9d54255312e37130bc517c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hk6mCC6dwwaGM9p2Qv0btZ8bRObLreKDJrRUb5NAwk4zLIWvZPm9Qa8/UZOawnyJnQvV9MXNZcEGXvspkZKWBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T06:57:28.761276Z","bundle_sha256":"38f18d29855d0031e15f2bed866dad6e6488f99a8e435c861fe8a42d349a10c7"}}