{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:L2YCAOWI4QOSDPMXS3OC55MLQA","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":"5cafa7288cf61a3bedf208cb397f442b4db8eb7c6b17f5451947d9453f577beb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-12T12:45:26Z","title_canon_sha256":"8cb9ad657680f79e1e1b43a9f577788c143d5d154e5f55c4d55faacc65cbeaca"},"schema_version":"1.0","source":{"id":"1503.03698","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.03698","created_at":"2026-05-18T01:22:08Z"},{"alias_kind":"arxiv_version","alias_value":"1503.03698v3","created_at":"2026-05-18T01:22:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03698","created_at":"2026-05-18T01:22:08Z"},{"alias_kind":"pith_short_12","alias_value":"L2YCAOWI4QOS","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"L2YCAOWI4QOSDPMX","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"L2YCAOWI","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:1d955f6727c1a030bea9eb64691613c9a911cc4e9194eba923c99d3411f82842","target":"graph","created_at":"2026-05-18T01:22:08Z","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":"[Abridged] Fullerenes have been recently detected in various circumstellar and interstellar environments, raising the question of their formation pathway. It has been proposed that they can form by the photo-chemical processing of large polycyclic aromatic hydrocarbons (PAHs). Following our previous work on the evolution of PAHs in the NGC 7023 reflection nebula, we evaluate, using photochemical modeling, the possibility that the PAH C$_{66}$H$_{20}$ (i.e. circumovalene) can lead to the formation of C$_{60}$ upon irradiation by ultraviolet photons. The chemical pathway involves full dehydrogen","authors_text":"C. Joblin, J. Montillaud, O. Berne","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-12T12:45:26Z","title":"Top-down formation of fullerenes in the interstellar medium"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03698","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":"sha256:0f3a8a1c669e7dd61c5b6abc616266aaf3eb4c0809c07339cf91497e993599c8","target":"record","created_at":"2026-05-18T01:22:08Z","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":"5cafa7288cf61a3bedf208cb397f442b4db8eb7c6b17f5451947d9453f577beb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-12T12:45:26Z","title_canon_sha256":"8cb9ad657680f79e1e1b43a9f577788c143d5d154e5f55c4d55faacc65cbeaca"},"schema_version":"1.0","source":{"id":"1503.03698","kind":"arxiv","version":3}},"canonical_sha256":"5eb0203ac8e41d21bd9796dc2ef58b800a414afe6f3caac530084aa800aac98d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5eb0203ac8e41d21bd9796dc2ef58b800a414afe6f3caac530084aa800aac98d","first_computed_at":"2026-05-18T01:22:08.144917Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:08.144917Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xcHFhqyio1OAN6+HdFdn79T6TRBORWOFwwl3hqnVvtJaJhdil7V3hdixG6rjUrjYNvGKQ/lG9PHGPFrj7dJiCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:08.145687Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.03698","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0f3a8a1c669e7dd61c5b6abc616266aaf3eb4c0809c07339cf91497e993599c8","sha256:1d955f6727c1a030bea9eb64691613c9a911cc4e9194eba923c99d3411f82842"],"state_sha256":"a5f9818435601ef79ba62db621fa1565a8ffbb260ebc1021f05e482b0a2bd94a"}