{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:MEHIU6BWZSII5G3VTELUX3F5RL","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":"cada9d6969ddd40257fae095347e8b1c41664db04dba2f0b1ac9ced5f9def703","cross_cats_sorted":["physics.data-an"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2022-11-29T17:45:11Z","title_canon_sha256":"98cd50c1dbe17c9d57a937c3254317a2af995864a4417b83a2b74b1c0eb87859"},"schema_version":"1.0","source":{"id":"2211.16417","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.16417","created_at":"2026-07-05T06:18:18Z"},{"alias_kind":"arxiv_version","alias_value":"2211.16417v4","created_at":"2026-07-05T06:18:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.16417","created_at":"2026-07-05T06:18:18Z"},{"alias_kind":"pith_short_12","alias_value":"MEHIU6BWZSII","created_at":"2026-07-05T06:18:18Z"},{"alias_kind":"pith_short_16","alias_value":"MEHIU6BWZSII5G3V","created_at":"2026-07-05T06:18:18Z"},{"alias_kind":"pith_short_8","alias_value":"MEHIU6BW","created_at":"2026-07-05T06:18:18Z"}],"graph_snapshots":[{"event_id":"sha256:ffa317e87570654c8084d4e9678d9e4088996be2d9106d5602eaecec41143063","target":"graph","created_at":"2026-07-05T06:18:18Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2211.16417/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Military chaff is a metallic, fibrous radar countermeasure that is released by aircraft and rockets for diversion and masking of targets. It is often released across the United States for training purposes, and, due to its resonant cut lengths, is often observed on the S-band Weather Surveillance Radar - 1988 Doppler (WSR-88D) network. Efforts to identify and characterize chaff and other non-meteorological targets algorithmically require a statistical understanding of the targets. Previous studies of chaff characteristics have provided important information that has proven to be useful for alg","authors_text":"Betty J. Bennett, James M. Kurdzo, John Y. N. Cho, Michael F. Donovan","cross_cats":["physics.data-an"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2022-11-29T17:45:11Z","title":"Extended Polarimetric Observations of Chaff using the WSR-88D Weather Radar Network"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.16417","kind":"arxiv","version":4},"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":"sha256:709f2769b7a645fce78dd182a32ce9a34ef34e2e99084fca5c53fb055d9a423e","target":"record","created_at":"2026-07-05T06:18:18Z","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":"cada9d6969ddd40257fae095347e8b1c41664db04dba2f0b1ac9ced5f9def703","cross_cats_sorted":["physics.data-an"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2022-11-29T17:45:11Z","title_canon_sha256":"98cd50c1dbe17c9d57a937c3254317a2af995864a4417b83a2b74b1c0eb87859"},"schema_version":"1.0","source":{"id":"2211.16417","kind":"arxiv","version":4}},"canonical_sha256":"610e8a7836cc908e9b7599174becbd8aefc8f6430097cf7a7db4d6f2b847ac3b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"610e8a7836cc908e9b7599174becbd8aefc8f6430097cf7a7db4d6f2b847ac3b","first_computed_at":"2026-07-05T06:18:18.980756Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:18:18.980756Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RCdLJx0PwQJSdjb6sxV8zEUwcOsyuX90GSGQ6WPgdUIN/1fFCF/8NKyFiaR8btClcHODZGuizoo6y3Kz1P6ACg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:18:18.981286Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.16417","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:709f2769b7a645fce78dd182a32ce9a34ef34e2e99084fca5c53fb055d9a423e","sha256:ffa317e87570654c8084d4e9678d9e4088996be2d9106d5602eaecec41143063"],"state_sha256":"a5e4f0ee9b5564dfbe6c0286a4bfac1bbbbb4817abb2d8fbcffa6740c9ce5173"}