{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:JWCACEXQKIHAKPH2ZZITYCYNR5","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":"a695a2e1579505a82b8f0e83a0bf34bdaaa1041c7ad00524d59dd39d63e567f3","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-12T13:51:56Z","title_canon_sha256":"bf38d7c7a7e1cc23c957fc1f08e71a571f220eb4255df2faa53dffa0efbcad38"},"schema_version":"1.0","source":{"id":"1308.2559","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.2559","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"arxiv_version","alias_value":"1308.2559v1","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.2559","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"pith_short_12","alias_value":"JWCACEXQKIHA","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JWCACEXQKIHAKPH2","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JWCACEXQ","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:ab90f230a1a0da55211573dd1910fb9ba96316d26a3c87e35412727bec3fc1e3","target":"graph","created_at":"2026-05-18T01:48:16Z","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":"Complex organic molecules, such as propylene (CH3CHCH2), are detected in molecular clouds (such as TMC1) with high fractional abundances (~2.10^{-9}, relative to hydrogen) that cannot be explained by gas-phase chemical reactions under normal dark cloud conditions. To obtain such high abundances requires an efficient grain-driven chemistry to be operating, coupled with effective desorption of the complex organics back into the gas-phase. We propose that the mechanism that we have previously described; rapid high density gas-phase chemistry in the gas released following sudden, total, ice mantle","authors_text":"C. Cecchi-Pestellini, D. A. Williams, J. M. C. Rawlings, S. Viti","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-12T13:51:56Z","title":"A radical route to interstellar propylene formation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.2559","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":"sha256:71ceffb20ff58b56d8d2672cf5de954200d8a0131b97d92e595b267762d73ba0","target":"record","created_at":"2026-05-18T01:48:16Z","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":"a695a2e1579505a82b8f0e83a0bf34bdaaa1041c7ad00524d59dd39d63e567f3","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-12T13:51:56Z","title_canon_sha256":"bf38d7c7a7e1cc23c957fc1f08e71a571f220eb4255df2faa53dffa0efbcad38"},"schema_version":"1.0","source":{"id":"1308.2559","kind":"arxiv","version":1}},"canonical_sha256":"4d840112f0520e053cface513c0b0d8f710667e5984c32e435787f407a85e09c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4d840112f0520e053cface513c0b0d8f710667e5984c32e435787f407a85e09c","first_computed_at":"2026-05-18T01:48:16.351688Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:16.351688Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HkXCBY7MCpBFV3eNS7u68XDLCltpevNAZ/jO7m+yGxjC74rxgxURjK0KxH1hxyvmNf+lN9b32poW/00IvD07CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:16.352238Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.2559","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71ceffb20ff58b56d8d2672cf5de954200d8a0131b97d92e595b267762d73ba0","sha256:ab90f230a1a0da55211573dd1910fb9ba96316d26a3c87e35412727bec3fc1e3"],"state_sha256":"81fb0bb9868cb3ceada0a0fbf1a1173acbf7259aff06676c149d29e24429fd9c"}