{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:Q523WWOLLB3OZCEDYGUHELNF5K","short_pith_number":"pith:Q523WWOL","canonical_record":{"source":{"id":"1907.08732","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-20T01:02:08Z","cross_cats_sorted":[],"title_canon_sha256":"27c700df2dfd882834f5a18ae27b1ee83e9f6b8acc4089c2dca9fa01f67bf869","abstract_canon_sha256":"208b40b548f3c08107b7835722c710784dedcfcea765287ff5661236b0b365d8"},"schema_version":"1.0"},"canonical_sha256":"8775bb59cb5876ec8883c1a8722da5eabaff09465f9c4e3596ce065cadc1df43","source":{"kind":"arxiv","id":"1907.08732","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.08732","created_at":"2026-05-17T23:40:05Z"},{"alias_kind":"arxiv_version","alias_value":"1907.08732v1","created_at":"2026-05-17T23:40:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08732","created_at":"2026-05-17T23:40:05Z"},{"alias_kind":"pith_short_12","alias_value":"Q523WWOLLB3O","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"Q523WWOLLB3OZCED","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"Q523WWOL","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:Q523WWOLLB3OZCEDYGUHELNF5K","target":"record","payload":{"canonical_record":{"source":{"id":"1907.08732","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-20T01:02:08Z","cross_cats_sorted":[],"title_canon_sha256":"27c700df2dfd882834f5a18ae27b1ee83e9f6b8acc4089c2dca9fa01f67bf869","abstract_canon_sha256":"208b40b548f3c08107b7835722c710784dedcfcea765287ff5661236b0b365d8"},"schema_version":"1.0"},"canonical_sha256":"8775bb59cb5876ec8883c1a8722da5eabaff09465f9c4e3596ce065cadc1df43","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:05.572709Z","signature_b64":"2UcAdRzJ5IqLFCXrAelS8c/F3lJzKUACyecJnZdwq89GGSmOcX2BpRhzKblQZlCi5cWKZAucP2Qt32vM+Af2Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8775bb59cb5876ec8883c1a8722da5eabaff09465f9c4e3596ce065cadc1df43","last_reissued_at":"2026-05-17T23:40:05.572205Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:05.572205Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.08732","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:40:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gpKdLq3eAqY6uYPrAz4RLP84jTku09uFsEbBeIXLmD0dI9nblcgaOPHIoxBOwhDvhWZUEpvEmJlJPyJ62kUZCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:55:35.346943Z"},"content_sha256":"94540d073a2daffe6d30a068200481800e6b40cbda5e7326b0406cacdd82365b","schema_version":"1.0","event_id":"sha256:94540d073a2daffe6d30a068200481800e6b40cbda5e7326b0406cacdd82365b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:Q523WWOLLB3OZCEDYGUHELNF5K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Trinity: An Air-Shower Imaging System for the Detection of Ultrahigh Energy Neutrinos","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"(2) Center for Advanced Instrumentation, (4) Dipartimento di Fisica e Astronomia, Abraham D. Falcone (3), A. Nepomuk Otte (1), Anthony M. Brown (2), Atlanta, Department of Physics, Durham, Durham University, GA, Georgia Institute of Technology, Ignacio Taboada (1) ((1) School of Physics & Center for Relativistic Astrophysics, Italy), Mos\\`e Mariotti (4), PA, Padova, Pennsylvania State University, UK (3) Department of Astronomy & Astrophysics, Universit\\`a di Padova & INFN Sezione di Padova, University Park, USA","submitted_at":"2019-07-20T01:02:08Z","abstract_excerpt":"Efforts to detect ultrahigh energy neutrinos are driven by several objectives: What is the origin of astrophysical neutrinos detected with IceCube? What are the sources of ultrahigh energy cosmic rays? Do the ANITA detected events point to new physics? Shedding light on these questions requires instruments that can detect neutrinos above $10^7$ GeV with sufficient sensitivity - a daunting task. While most ultrahigh energy neutrino experiments are based on the detection of a radio signature from shower particles following a neutrino interaction, we believe that the detection of Cherenkov and fl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08732","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:40:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ji+S3B5X0W+21pOrku2+9z5a0Yjxzol21wl6OeE33DP//3djFs11N/JOIH3C9jlCGiirK6dwESbsEJFbaJKhBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:55:35.347359Z"},"content_sha256":"63862406af11e2c1cc74ab34ecd9662c9748e869bdca7e9cd54b4177735499b7","schema_version":"1.0","event_id":"sha256:63862406af11e2c1cc74ab34ecd9662c9748e869bdca7e9cd54b4177735499b7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q523WWOLLB3OZCEDYGUHELNF5K/bundle.json","state_url":"https://pith.science/pith/Q523WWOLLB3OZCEDYGUHELNF5K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q523WWOLLB3OZCEDYGUHELNF5K/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T19:55:35Z","links":{"resolver":"https://pith.science/pith/Q523WWOLLB3OZCEDYGUHELNF5K","bundle":"https://pith.science/pith/Q523WWOLLB3OZCEDYGUHELNF5K/bundle.json","state":"https://pith.science/pith/Q523WWOLLB3OZCEDYGUHELNF5K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q523WWOLLB3OZCEDYGUHELNF5K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:Q523WWOLLB3OZCEDYGUHELNF5K","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":"208b40b548f3c08107b7835722c710784dedcfcea765287ff5661236b0b365d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-20T01:02:08Z","title_canon_sha256":"27c700df2dfd882834f5a18ae27b1ee83e9f6b8acc4089c2dca9fa01f67bf869"},"schema_version":"1.0","source":{"id":"1907.08732","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.08732","created_at":"2026-05-17T23:40:05Z"},{"alias_kind":"arxiv_version","alias_value":"1907.08732v1","created_at":"2026-05-17T23:40:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08732","created_at":"2026-05-17T23:40:05Z"},{"alias_kind":"pith_short_12","alias_value":"Q523WWOLLB3O","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"Q523WWOLLB3OZCED","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"Q523WWOL","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:63862406af11e2c1cc74ab34ecd9662c9748e869bdca7e9cd54b4177735499b7","target":"graph","created_at":"2026-05-17T23:40:05Z","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":"Efforts to detect ultrahigh energy neutrinos are driven by several objectives: What is the origin of astrophysical neutrinos detected with IceCube? What are the sources of ultrahigh energy cosmic rays? Do the ANITA detected events point to new physics? Shedding light on these questions requires instruments that can detect neutrinos above $10^7$ GeV with sufficient sensitivity - a daunting task. While most ultrahigh energy neutrino experiments are based on the detection of a radio signature from shower particles following a neutrino interaction, we believe that the detection of Cherenkov and fl","authors_text":"(2) Center for Advanced Instrumentation, (4) Dipartimento di Fisica e Astronomia, Abraham D. Falcone (3), A. Nepomuk Otte (1), Anthony M. Brown (2), Atlanta, Department of Physics, Durham, Durham University, GA, Georgia Institute of Technology, Ignacio Taboada (1) ((1) School of Physics & Center for Relativistic Astrophysics, Italy), Mos\\`e Mariotti (4), PA, Padova, Pennsylvania State University, UK (3) Department of Astronomy & Astrophysics, Universit\\`a di Padova & INFN Sezione di Padova, University Park, USA","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-20T01:02:08Z","title":"Trinity: An Air-Shower Imaging System for the Detection of Ultrahigh Energy Neutrinos"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08732","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":"sha256:94540d073a2daffe6d30a068200481800e6b40cbda5e7326b0406cacdd82365b","target":"record","created_at":"2026-05-17T23:40:05Z","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":"208b40b548f3c08107b7835722c710784dedcfcea765287ff5661236b0b365d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-20T01:02:08Z","title_canon_sha256":"27c700df2dfd882834f5a18ae27b1ee83e9f6b8acc4089c2dca9fa01f67bf869"},"schema_version":"1.0","source":{"id":"1907.08732","kind":"arxiv","version":1}},"canonical_sha256":"8775bb59cb5876ec8883c1a8722da5eabaff09465f9c4e3596ce065cadc1df43","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8775bb59cb5876ec8883c1a8722da5eabaff09465f9c4e3596ce065cadc1df43","first_computed_at":"2026-05-17T23:40:05.572205Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:05.572205Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2UcAdRzJ5IqLFCXrAelS8c/F3lJzKUACyecJnZdwq89GGSmOcX2BpRhzKblQZlCi5cWKZAucP2Qt32vM+Af2Dg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:05.572709Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.08732","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94540d073a2daffe6d30a068200481800e6b40cbda5e7326b0406cacdd82365b","sha256:63862406af11e2c1cc74ab34ecd9662c9748e869bdca7e9cd54b4177735499b7"],"state_sha256":"a3496e5b9d439a2273aeed98e27fc39635a50387895015e5858abd62bbcbff8e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"33spRN7MqtzbB1lafe14kjW/TXl2QboPnukGDDhf2Sx2moVksoLk+7UbTqifd8aTMi/ozZJwhIRVbUum4rQgCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:55:35.350995Z","bundle_sha256":"30fbac171e339f7d61d60ff10a62235ff179324b24cd98a7cba3c36b29e0366d"}}