{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:ZLWAGWENC4O5X4PHZHNH4SNTLV","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":"05838a01e5c8f5c0bfec2ec38bf1b14f211101f08fc0f7f890b57972454759d0","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2016-04-26T14:14:03Z","title_canon_sha256":"839ec61a2f14a8c51fa2b8dd51f78319733204e82fcdf50aa13623a4d84bde55"},"schema_version":"1.0","source":{"id":"1604.07687","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.07687","created_at":"2026-05-18T01:12:22Z"},{"alias_kind":"arxiv_version","alias_value":"1604.07687v3","created_at":"2026-05-18T01:12:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.07687","created_at":"2026-05-18T01:12:22Z"},{"alias_kind":"pith_short_12","alias_value":"ZLWAGWENC4O5","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"ZLWAGWENC4O5X4PH","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"ZLWAGWEN","created_at":"2026-05-18T12:30:53Z"}],"graph_snapshots":[{"event_id":"sha256:309f148218ba32815825edd86a83d5f9f14cd267b939e8efae71472c47d016ca","target":"graph","created_at":"2026-05-18T01:12:22Z","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 fermi paradox uses an appeal to the mediocrity principle to make it seem counter-intuitive that humanity has not been contacted by extraterrestrial intelligence. A numerical, statistical analysis was conducted to determine whether this apparent loneliness is, in fact, unexpected. An inequality was derived to relate the frequency of life arising and developing technology on a suitable planet in the galaxy, the average length of time since the first broadcast of such a civilization, and a constant term. An analysis of the sphere reached thus far by human communication was also conducted, con","authors_text":"Evan Solomonides, Yervant Terzian","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2016-04-26T14:14:03Z","title":"A Probabilistic Analysis of the Fermi Paradox"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.07687","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:d3fa2ff620955b6546a326431ee6042311d7c756110ceb589cfa3a57afa2cd78","target":"record","created_at":"2026-05-18T01:12:22Z","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":"05838a01e5c8f5c0bfec2ec38bf1b14f211101f08fc0f7f890b57972454759d0","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2016-04-26T14:14:03Z","title_canon_sha256":"839ec61a2f14a8c51fa2b8dd51f78319733204e82fcdf50aa13623a4d84bde55"},"schema_version":"1.0","source":{"id":"1604.07687","kind":"arxiv","version":3}},"canonical_sha256":"caec03588d171ddbf1e7c9da7e49b35d634076a961e57f3537c4e3a4ef71cef2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"caec03588d171ddbf1e7c9da7e49b35d634076a961e57f3537c4e3a4ef71cef2","first_computed_at":"2026-05-18T01:12:22.446909Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:22.446909Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vRTldoe3POQnZB+UwLeSMBqmhfdiPP6zDzzBj7hs5syndOuxv7Y0o8X5RjE4dysG9oJQjYcRtkJPPJGQjtEeDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:22.447249Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.07687","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d3fa2ff620955b6546a326431ee6042311d7c756110ceb589cfa3a57afa2cd78","sha256:309f148218ba32815825edd86a83d5f9f14cd267b939e8efae71472c47d016ca"],"state_sha256":"decd43f3597738284f2866a6870366c35f8016911811d42ba1dcb49633961d52"}