{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:AIES6WIXPFHJUFRCSM7Y2ULIAQ","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":"f64718497cb91bf6f405b32e03f6a486c354f13974b27fe16b0467aa69b668bf","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-28T14:52:42Z","title_canon_sha256":"71c8e2a87bd141fba49516fbeb5bd3bfb871e92cdb8af7273881683fa2a4f198"},"schema_version":"1.0","source":{"id":"1811.11602","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.11602","created_at":"2026-05-17T23:55:53Z"},{"alias_kind":"arxiv_version","alias_value":"1811.11602v1","created_at":"2026-05-17T23:55:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.11602","created_at":"2026-05-17T23:55:53Z"},{"alias_kind":"pith_short_12","alias_value":"AIES6WIXPFHJ","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"AIES6WIXPFHJUFRC","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"AIES6WIX","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:965355998af664db747f803326144903a3fa4ca3f272be10b13b7ea313faa88c","target":"graph","created_at":"2026-05-17T23:55:53Z","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":"The ketenyl radical, HCCO, has recently been detected in the ISM for the first time. Further astronomical detections of HCCO will help us understand its gas-grain chemistry, and subsequently revise the oxygen-bearing chemistry towards dark clouds. Moreover, its deuterated counterpart, DCCO, has never been observed in the ISM. HCCO and DCCO still lack a broad spectroscopic investigation, although they exhibit a significant astrophysical relevance. In this work we aim to measure the pure rotational spectra of the ground state of HCCO and DCCO in the millimeter and submillimeter region, considera","authors_text":"A. Vasyunin, C. Endres, J. Chantzos, J. Laas, L. Bizzocchi, P. Caselli, S. Spezzano, V. Lattanzi","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-28T14:52:42Z","title":"Rotational spectroscopy of the HCCO and DCCO radicals in the millimeter and submillimeter range"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.11602","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:f9870ac190050c342c54bafb9cde08dc33fd2f1f65c1394881ff3b0ea5a71af1","target":"record","created_at":"2026-05-17T23:55:53Z","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":"f64718497cb91bf6f405b32e03f6a486c354f13974b27fe16b0467aa69b668bf","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-28T14:52:42Z","title_canon_sha256":"71c8e2a87bd141fba49516fbeb5bd3bfb871e92cdb8af7273881683fa2a4f198"},"schema_version":"1.0","source":{"id":"1811.11602","kind":"arxiv","version":1}},"canonical_sha256":"02092f5917794e9a1622933f8d51680431716e3270f68c45353a980721f33884","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"02092f5917794e9a1622933f8d51680431716e3270f68c45353a980721f33884","first_computed_at":"2026-05-17T23:55:53.749946Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:53.749946Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ssPFl+G0bTGUtaYlydPiopg1IfosLeAQRIpL60E5TxE5qEFQeHz+5kMF2CPUCDa0XVFjwmg+d9CXlis4eketAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:53.750612Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.11602","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f9870ac190050c342c54bafb9cde08dc33fd2f1f65c1394881ff3b0ea5a71af1","sha256:965355998af664db747f803326144903a3fa4ca3f272be10b13b7ea313faa88c"],"state_sha256":"4095db525c54eb1c4c7e6c66187d65b214cd5aed38197e7558ed26f322db8a62"}