{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:7A5PH5UM6FNHGNO3KHAK7CIHDI","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":"08a4b7b4af6d9244b72d3ff70c9f46e012b56d7a2ab7f119669fb5286466f22d","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-01-09T06:42:30Z","title_canon_sha256":"1bded621cb974783c665bdfeb5c077ea03177bd9dbb0811ae15226295457fb65"},"schema_version":"1.0","source":{"id":"1801.02814","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.02814","created_at":"2026-05-18T00:26:17Z"},{"alias_kind":"arxiv_version","alias_value":"1801.02814v2","created_at":"2026-05-18T00:26:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.02814","created_at":"2026-05-18T00:26:17Z"},{"alias_kind":"pith_short_12","alias_value":"7A5PH5UM6FNH","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"7A5PH5UM6FNHGNO3","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"7A5PH5UM","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:b8c517a5038c954a3356cd8774accc8f9ff8f3cec0c4cd8a6ad6acbbe04dbe69","target":"graph","created_at":"2026-05-18T00:26:17Z","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":"We have conducted a search for radio emission consistent with an artificial source targeting 1I/'Oumuamua with the Robert C. Byrd Green Bank Telescope (GBT) between 1.1 and 11.6 GHz. We searched the data for narrowband signals and found none. Given the close proximity to this interstellar object, we can place limits to putative transmitters with extremely low power (0.08 W).","authors_text":"A. Siemion, D. C. Price, D. DeBoer, D. H. E. MacMahon, G. Hellbourg, H. Isaacson, J. E. Enriquez, M. Lebofsky, N. Gizani, R. S. Park, S. Croft, T. J. W. Lazio, V. Gajjar","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-01-09T06:42:30Z","title":"Breakthrough Listen Observations of 1I/'Oumuamua with the GBT"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.02814","kind":"arxiv","version":2},"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":"sha256:94717ae2d9019e29000394104483006de643fb550d3563f10107a13175338ce9","target":"record","created_at":"2026-05-18T00:26:17Z","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":"08a4b7b4af6d9244b72d3ff70c9f46e012b56d7a2ab7f119669fb5286466f22d","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-01-09T06:42:30Z","title_canon_sha256":"1bded621cb974783c665bdfeb5c077ea03177bd9dbb0811ae15226295457fb65"},"schema_version":"1.0","source":{"id":"1801.02814","kind":"arxiv","version":2}},"canonical_sha256":"f83af3f68cf15a7335db51c0af89071a1fda2a571571fb7cf166dc020279cb83","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f83af3f68cf15a7335db51c0af89071a1fda2a571571fb7cf166dc020279cb83","first_computed_at":"2026-05-18T00:26:17.766627Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:26:17.766627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nTHEKi1EGAHVGC8R4necv/K9+JgOrlb/RR1Ims01qXo9aPwidZFq6Tmr89kkoB9potVpmMv9RX86zibI8t7LAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:26:17.767370Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.02814","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94717ae2d9019e29000394104483006de643fb550d3563f10107a13175338ce9","sha256:b8c517a5038c954a3356cd8774accc8f9ff8f3cec0c4cd8a6ad6acbbe04dbe69"],"state_sha256":"f67d07b61a82488020dfddfa3a3a3fc0dd3f3d3465424d051fec117b94e995ac"}