{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:HN4V75QEFAAYE74IZFQQDAJQDB","short_pith_number":"pith:HN4V75QE","canonical_record":{"source":{"id":"1208.2734","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-08-14T00:30:40Z","cross_cats_sorted":[],"title_canon_sha256":"8f0083ec966afea4166bb9f00fda0b1f3abdfb716d8606c4e8cdb25c4c581660","abstract_canon_sha256":"caeb90bc518a5c7d87fbff362680f5f5969b215c49fa308ce999bda5922e33f9"},"schema_version":"1.0"},"canonical_sha256":"3b795ff6042801827f88c961018130187a2a7e5967739687a8f4d7a11a2de331","source":{"kind":"arxiv","id":"1208.2734","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.2734","created_at":"2026-05-18T01:55:16Z"},{"alias_kind":"arxiv_version","alias_value":"1208.2734v1","created_at":"2026-05-18T01:55:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.2734","created_at":"2026-05-18T01:55:16Z"},{"alias_kind":"pith_short_12","alias_value":"HN4V75QEFAAY","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"HN4V75QEFAAYE74I","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"HN4V75QE","created_at":"2026-05-18T12:27:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:HN4V75QEFAAYE74IZFQQDAJQDB","target":"record","payload":{"canonical_record":{"source":{"id":"1208.2734","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-08-14T00:30:40Z","cross_cats_sorted":[],"title_canon_sha256":"8f0083ec966afea4166bb9f00fda0b1f3abdfb716d8606c4e8cdb25c4c581660","abstract_canon_sha256":"caeb90bc518a5c7d87fbff362680f5f5969b215c49fa308ce999bda5922e33f9"},"schema_version":"1.0"},"canonical_sha256":"3b795ff6042801827f88c961018130187a2a7e5967739687a8f4d7a11a2de331","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:55:16.242536Z","signature_b64":"lF3oHI1mwkvSWlrigmfkrImQ/aO8Z8E5qoHfd1yRRRRl3KPtqEJ64adGZmFGxw/7watHl5tF5igQUtfcJ5bsBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3b795ff6042801827f88c961018130187a2a7e5967739687a8f4d7a11a2de331","last_reissued_at":"2026-05-18T01:55:16.242099Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:55:16.242099Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.2734","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":"2026-05-18T01:55:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WVhUrn9L5wJKjtR002wGH9YPaUI/5Ke7d7eAzFvh139okWEHyMKegwyWGjyK9Mm0AnOEPgamXXbw14U+PHDIDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T10:16:07.885633Z"},"content_sha256":"f23f31864765a7a118978f06bdca479540c440efbc73c7ef55547578ee8fea62","schema_version":"1.0","event_id":"sha256:f23f31864765a7a118978f06bdca479540c440efbc73c7ef55547578ee8fea62"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:HN4V75QEFAAYE74IZFQQDAJQDB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The MIDAS telescope for microwave detection of ultra-high energy cosmic rays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Berlin, A. Ramos de Castro, B. Rouille d'Orfeuil, C. Bonifazi, C. Williams, E. Amaral Soares, E. Mills, E. M. Santos, E. Zas, J. Alvarez-Mu\\~niz, J. F. Genat, J. R. T. de Mello Neto, J. Zhou, L. C. Reyes, M. Bogdan, M. Boh\\'a\\v{c}ov\\'a, M. Monasor, N. Hollon, P. Facal San Luis, P. Privitera, S. Wayne, W. R. Carvalho Jr","submitted_at":"2012-08-14T00:30:40Z","abstract_excerpt":"We present the design, implementation and data taking performance of the MIcrowave Detection of Air Showers (MIDAS) experiment, a large field of view imaging telescope designed to detect microwave radiation from extensive air showers induced by ultra-high energy cosmic rays. This novel technique may bring a tenfold increase in detector duty cycle when compared to the standard fluorescence technique based on detection of ultraviolet photons. The MIDAS telescope consists of a 4.5 m diameter dish with a 53-pixel receiver camera, instrumented with feed horns operating in the commercial extended C-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.2734","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":"2026-05-18T01:55:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iv2dj2777NCxxRoLDyqPMSCOSyLsgkrtaJooxMR+qrdG5Qm5HjCBRhJBsCajbwvwhm4NtUvGij0vnFAZGfhzCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T10:16:07.886439Z"},"content_sha256":"fff2106495dcca2d9406d9f7aa22f7d35312de4dd6fb7ec7cf5e92a43ac5abb1","schema_version":"1.0","event_id":"sha256:fff2106495dcca2d9406d9f7aa22f7d35312de4dd6fb7ec7cf5e92a43ac5abb1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HN4V75QEFAAYE74IZFQQDAJQDB/bundle.json","state_url":"https://pith.science/pith/HN4V75QEFAAYE74IZFQQDAJQDB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HN4V75QEFAAYE74IZFQQDAJQDB/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":"2026-06-10T10:16:07Z","links":{"resolver":"https://pith.science/pith/HN4V75QEFAAYE74IZFQQDAJQDB","bundle":"https://pith.science/pith/HN4V75QEFAAYE74IZFQQDAJQDB/bundle.json","state":"https://pith.science/pith/HN4V75QEFAAYE74IZFQQDAJQDB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HN4V75QEFAAYE74IZFQQDAJQDB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:HN4V75QEFAAYE74IZFQQDAJQDB","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":"caeb90bc518a5c7d87fbff362680f5f5969b215c49fa308ce999bda5922e33f9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-08-14T00:30:40Z","title_canon_sha256":"8f0083ec966afea4166bb9f00fda0b1f3abdfb716d8606c4e8cdb25c4c581660"},"schema_version":"1.0","source":{"id":"1208.2734","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.2734","created_at":"2026-05-18T01:55:16Z"},{"alias_kind":"arxiv_version","alias_value":"1208.2734v1","created_at":"2026-05-18T01:55:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.2734","created_at":"2026-05-18T01:55:16Z"},{"alias_kind":"pith_short_12","alias_value":"HN4V75QEFAAY","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"HN4V75QEFAAYE74I","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"HN4V75QE","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:fff2106495dcca2d9406d9f7aa22f7d35312de4dd6fb7ec7cf5e92a43ac5abb1","target":"graph","created_at":"2026-05-18T01:55:16Z","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":"We present the design, implementation and data taking performance of the MIcrowave Detection of Air Showers (MIDAS) experiment, a large field of view imaging telescope designed to detect microwave radiation from extensive air showers induced by ultra-high energy cosmic rays. This novel technique may bring a tenfold increase in detector duty cycle when compared to the standard fluorescence technique based on detection of ultraviolet photons. The MIDAS telescope consists of a 4.5 m diameter dish with a 53-pixel receiver camera, instrumented with feed horns operating in the commercial extended C-","authors_text":"A. Berlin, A. Ramos de Castro, B. Rouille d'Orfeuil, C. Bonifazi, C. Williams, E. Amaral Soares, E. Mills, E. M. Santos, E. Zas, J. Alvarez-Mu\\~niz, J. F. Genat, J. R. T. de Mello Neto, J. Zhou, L. C. Reyes, M. Bogdan, M. Boh\\'a\\v{c}ov\\'a, M. Monasor, N. Hollon, P. Facal San Luis, P. Privitera, S. Wayne, W. R. Carvalho Jr","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-08-14T00:30:40Z","title":"The MIDAS telescope for microwave detection of ultra-high energy cosmic rays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.2734","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:f23f31864765a7a118978f06bdca479540c440efbc73c7ef55547578ee8fea62","target":"record","created_at":"2026-05-18T01:55:16Z","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":"caeb90bc518a5c7d87fbff362680f5f5969b215c49fa308ce999bda5922e33f9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-08-14T00:30:40Z","title_canon_sha256":"8f0083ec966afea4166bb9f00fda0b1f3abdfb716d8606c4e8cdb25c4c581660"},"schema_version":"1.0","source":{"id":"1208.2734","kind":"arxiv","version":1}},"canonical_sha256":"3b795ff6042801827f88c961018130187a2a7e5967739687a8f4d7a11a2de331","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3b795ff6042801827f88c961018130187a2a7e5967739687a8f4d7a11a2de331","first_computed_at":"2026-05-18T01:55:16.242099Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:55:16.242099Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lF3oHI1mwkvSWlrigmfkrImQ/aO8Z8E5qoHfd1yRRRRl3KPtqEJ64adGZmFGxw/7watHl5tF5igQUtfcJ5bsBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:55:16.242536Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.2734","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f23f31864765a7a118978f06bdca479540c440efbc73c7ef55547578ee8fea62","sha256:fff2106495dcca2d9406d9f7aa22f7d35312de4dd6fb7ec7cf5e92a43ac5abb1"],"state_sha256":"830aec45f449e6aaf71018361bbe21b7d6202b8ff741dd9b2739200e7f629ea2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZjWZVCnl0KnYeJifgWfh1C0/Hqy6WSOoM+g9oGnwh6HifDu7KdJ+iN/WLBqxO9GyEv3fsGIMN0SYCN7/X4JBBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T10:16:07.890306Z","bundle_sha256":"347e59f1acb73d9cfe3b96b0b44ad6d0baffe5c346bbfca813d4e31695429737"}}