{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:QDHCKF4TYL4F2ISW7KUOJ5MRZT","short_pith_number":"pith:QDHCKF4T","schema_version":"1.0","canonical_sha256":"80ce251793c2f85d2256faa8e4f591ccc381baeb5335fa2430c1b01a230f8d6b","source":{"kind":"arxiv","id":"2509.06310","version":2},"attestation_state":"computed","paper":{"title":"A Deep SETI Search for Technosignatures in the TRAPPIST-1 System with FAST","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.IM","authors_text":"Bo-Lun Huang, Bo Yu, Guang-Yuan Song, Tong-Jie Zhang, Yan Cui, Zhen-Zhao Tao","submitted_at":"2025-09-08T03:23:39Z","abstract_excerpt":"The Five-hundred-meter Aperture Spherical Telescope (FAST) is the world's largest single-dish radio telescope, and the search for extraterrestrial intelligence (SETI) is one of its five key science objectives. We conducted a targeted narrowband search toward the TRAPPIST-1 system using FAST. The observations consisted of five independent L-band pointings, each with a 20-minute integration, for a total on-source time of 1.67h. The frequency coverage spanned 1.05--1.45GHz with a spectral resolution of ~7.5Hz. We searched for narrowband drifting signals with Doppler drift rates within +_4Hz/s and"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2509.06310","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-09-08T03:23:39Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"c59cde1205209891b4c537ab2f9b35288bb8e76bdac7219456281deb768f9b60","abstract_canon_sha256":"3cc37ded306f458123818fd934434ab76d30b1d72a434a79403df0e521033dbb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-03T01:17:12.839103Z","signature_b64":"Or07qdy5e/7IvbCt/7Xh1IxoJpSt1zg6SNpjb/1uEGAPgJ5WCluPNBqYNhcdr/BY8K6S04ff99PnUIJcpVfeBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"80ce251793c2f85d2256faa8e4f591ccc381baeb5335fa2430c1b01a230f8d6b","last_reissued_at":"2026-07-03T01:17:12.838699Z","signature_status":"signed_v1","first_computed_at":"2026-07-03T01:17:12.838699Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Deep SETI Search for Technosignatures in the TRAPPIST-1 System with FAST","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.IM","authors_text":"Bo-Lun Huang, Bo Yu, Guang-Yuan Song, Tong-Jie Zhang, Yan Cui, Zhen-Zhao Tao","submitted_at":"2025-09-08T03:23:39Z","abstract_excerpt":"The Five-hundred-meter Aperture Spherical Telescope (FAST) is the world's largest single-dish radio telescope, and the search for extraterrestrial intelligence (SETI) is one of its five key science objectives. We conducted a targeted narrowband search toward the TRAPPIST-1 system using FAST. The observations consisted of five independent L-band pointings, each with a 20-minute integration, for a total on-source time of 1.67h. The frequency coverage spanned 1.05--1.45GHz with a spectral resolution of ~7.5Hz. We searched for narrowband drifting signals with Doppler drift rates within +_4Hz/s and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.06310","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2509.06310/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2509.06310","created_at":"2026-07-03T01:17:12.838748+00:00"},{"alias_kind":"arxiv_version","alias_value":"2509.06310v2","created_at":"2026-07-03T01:17:12.838748+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.06310","created_at":"2026-07-03T01:17:12.838748+00:00"},{"alias_kind":"pith_short_12","alias_value":"QDHCKF4TYL4F","created_at":"2026-07-03T01:17:12.838748+00:00"},{"alias_kind":"pith_short_16","alias_value":"QDHCKF4TYL4F2ISW","created_at":"2026-07-03T01:17:12.838748+00:00"},{"alias_kind":"pith_short_8","alias_value":"QDHCKF4T","created_at":"2026-07-03T01:17:12.838748+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/QDHCKF4TYL4F2ISW7KUOJ5MRZT","json":"https://pith.science/pith/QDHCKF4TYL4F2ISW7KUOJ5MRZT.json","graph_json":"https://pith.science/api/pith-number/QDHCKF4TYL4F2ISW7KUOJ5MRZT/graph.json","events_json":"https://pith.science/api/pith-number/QDHCKF4TYL4F2ISW7KUOJ5MRZT/events.json","paper":"https://pith.science/paper/QDHCKF4T"},"agent_actions":{"view_html":"https://pith.science/pith/QDHCKF4TYL4F2ISW7KUOJ5MRZT","download_json":"https://pith.science/pith/QDHCKF4TYL4F2ISW7KUOJ5MRZT.json","view_paper":"https://pith.science/paper/QDHCKF4T","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2509.06310&json=true","fetch_graph":"https://pith.science/api/pith-number/QDHCKF4TYL4F2ISW7KUOJ5MRZT/graph.json","fetch_events":"https://pith.science/api/pith-number/QDHCKF4TYL4F2ISW7KUOJ5MRZT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QDHCKF4TYL4F2ISW7KUOJ5MRZT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QDHCKF4TYL4F2ISW7KUOJ5MRZT/action/storage_attestation","attest_author":"https://pith.science/pith/QDHCKF4TYL4F2ISW7KUOJ5MRZT/action/author_attestation","sign_citation":"https://pith.science/pith/QDHCKF4TYL4F2ISW7KUOJ5MRZT/action/citation_signature","submit_replication":"https://pith.science/pith/QDHCKF4TYL4F2ISW7KUOJ5MRZT/action/replication_record"}},"created_at":"2026-07-03T01:17:12.838748+00:00","updated_at":"2026-07-03T01:17:12.838748+00:00"}