{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:BNRLSVED76WYWQJZOFVE3BFJYA","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":"ee9b2b7b04588ca19f49973b52b890e2ec623ed237154ca672c81dec57ac1caa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-09-13T20:53:40Z","title_canon_sha256":"2163944a545d16e2b88b7a6f2c7278db56fe5b231e29b56b8ad353b9e00e74cd"},"schema_version":"1.0","source":{"id":"1709.04536","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.04536","created_at":"2026-05-18T00:16:31Z"},{"alias_kind":"arxiv_version","alias_value":"1709.04536v1","created_at":"2026-05-18T00:16:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.04536","created_at":"2026-05-18T00:16:31Z"},{"alias_kind":"pith_short_12","alias_value":"BNRLSVED76WY","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"BNRLSVED76WYWQJZ","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"BNRLSVED","created_at":"2026-05-18T12:31:08Z"}],"graph_snapshots":[{"event_id":"sha256:665d4bef21108df27f19726764e5a1be00f5ff9b1d9b57c7dbe66224d73e538c","target":"graph","created_at":"2026-05-18T00:16:31Z","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 Antarctic Impulsive Transient Antenna (ANITA) is a NASA long-duration balloon experiment with the primary goal of detecting ultra-high-energy ($>10^{18}\\,\\mbox{eV}$) neutrinos via the Askaryan Effect. The fourth ANITA mission, ANITA-IV, recently flew from Dec 2 to Dec 29, 2016. For the first time, the Tunable Universal Filter Frontend (TUFF) boards were deployed for mitigation of narrow-band, anthropogenic noise with tunable, switchable notch filters. The TUFF boards also performed second-stage amplification by approximately 45 dB to boost the $\\sim\\,\\mu\\mbox{V-level}$ radio frequency (RF)","authors_text":"A.Connolly, A.G.Vieregg, A.Ludwig, A.Novikov, A.Romero-Wolf, B.Dailey, B.F.Rauch, B.Rotter, B.Strutt, C.Chen, C.Deaconu, C.Miki, D.Saltzberg, D. Seckel, D.Z.Besson, E.Oberla, F.Wu, G.S.Varner, J.G.Learned, J.Gordon, J.Huang, J.J.Beatty, J.Kowalski, J.Lam, J.M.Clem, J.Nam, J.Ripa, J.Roberts, J.Russell, J.Shiao, J.Stockham, K.Belov, K.M.Liewer, K.Mulrey, K.Tatem, L.Batten, L.Cremonesi, M.H.Israel, M.Kovacevich, M.Stockham, O.Banerjee, P.Allison, P.Cao, P.Chen, P.F.Dowkontt, P.W.Gorham, R.Hupe, R.J.Nichol, R.Young, S.A.Wissel, S.Hsu, S.Matsuno, S.Prohira, S.Stafford, S.Wang, T.C.Liu, V.Bugaev, W.R.Binns, Y.Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-09-13T20:53:40Z","title":"Dynamic tunable notch filters for the Antarctic Impulsive Transient Antenna (ANITA)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.04536","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":"sha256:03e2f701dca53093e1b8db2f9cfd427a1532d65fd6df71c911a71551657287a6","target":"record","created_at":"2026-05-18T00:16:31Z","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":"ee9b2b7b04588ca19f49973b52b890e2ec623ed237154ca672c81dec57ac1caa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-09-13T20:53:40Z","title_canon_sha256":"2163944a545d16e2b88b7a6f2c7278db56fe5b231e29b56b8ad353b9e00e74cd"},"schema_version":"1.0","source":{"id":"1709.04536","kind":"arxiv","version":1}},"canonical_sha256":"0b62b95483ffad8b4139716a4d84a9c01a8cf3ce2abcad981abf1b16b3390acd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b62b95483ffad8b4139716a4d84a9c01a8cf3ce2abcad981abf1b16b3390acd","first_computed_at":"2026-05-18T00:16:31.379254Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:16:31.379254Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JR/hTitH/UEduhlCOnsurTz8B+jgveeelxolPe4Un7fCKV3BPx2T+U6gjePjo08qSiXiERclMYet+nxiFZ31CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:16:31.379703Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.04536","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:03e2f701dca53093e1b8db2f9cfd427a1532d65fd6df71c911a71551657287a6","sha256:665d4bef21108df27f19726764e5a1be00f5ff9b1d9b57c7dbe66224d73e538c"],"state_sha256":"5605c28a66617d5c7b4c6cbf80fa2db37b55e4b88b4b51353308b39e746ef609"}