{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:2XAZKE54NNV7HTQPS2S4HJKF5J","short_pith_number":"pith:2XAZKE54","canonical_record":{"source":{"id":"astro-ph/9907248","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-07-19T13:49:46Z","cross_cats_sorted":[],"title_canon_sha256":"031136ddf5832047b2eed0c2b3d9fecc3c17670449aac9b489cecdc0cf775d3e","abstract_canon_sha256":"82b84c8c4bcaf20e5712f6826a351a4d00bc2430b8316259d3fd21da80f6024d"},"schema_version":"1.0"},"canonical_sha256":"d5c19513bc6b6bf3ce0f96a5c3a545ea43a666bf43109df4a602cac0356deb80","source":{"kind":"arxiv","id":"astro-ph/9907248","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9907248","created_at":"2026-05-18T04:33:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9907248v1","created_at":"2026-05-18T04:33:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9907248","created_at":"2026-05-18T04:33:37Z"},{"alias_kind":"pith_short_12","alias_value":"2XAZKE54NNV7","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"2XAZKE54NNV7HTQP","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"2XAZKE54","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:2XAZKE54NNV7HTQPS2S4HJKF5J","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9907248","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-07-19T13:49:46Z","cross_cats_sorted":[],"title_canon_sha256":"031136ddf5832047b2eed0c2b3d9fecc3c17670449aac9b489cecdc0cf775d3e","abstract_canon_sha256":"82b84c8c4bcaf20e5712f6826a351a4d00bc2430b8316259d3fd21da80f6024d"},"schema_version":"1.0"},"canonical_sha256":"d5c19513bc6b6bf3ce0f96a5c3a545ea43a666bf43109df4a602cac0356deb80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:33:37.724375Z","signature_b64":"ficP5+ImchN2isFKhjaJL8wNLd170oifCNRa8rrHfaUjd+y3NLrQlxGku0lDi2tbibq/2q/9hTQeQEIwlnFbDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d5c19513bc6b6bf3ce0f96a5c3a545ea43a666bf43109df4a602cac0356deb80","last_reissued_at":"2026-05-18T04:33:37.723839Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:33:37.723839Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9907248","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":"2026-05-18T04:33:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4vGE2a0Q/9i6WTMur2BD7rVTS0lvrSCkk4AzbsZg2Kx5tuTPJhC5/VBydAnSisahsoAqFp1pQyKYXFjhGRu4Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:15:43.580301Z"},"content_sha256":"243828528e892db7af0de2341014d12d78f4f8ee7ad520b4d210c7438b00f1b8","schema_version":"1.0","event_id":"sha256:243828528e892db7af0de2341014d12d78f4f8ee7ad520b4d210c7438b00f1b8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:2XAZKE54NNV7HTQPS2S4HJKF5J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Very Energetic Radiation Imaging Telescope Array System (VERITAS)","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.C. Breslin, A.M. Hillas, B.L. Dingus, B. McKernan, D.A. Carter-Lewis, D.J. Fegan, D. Kieda, D. Mueller, F. Krennrich, G. Hermann, G.H. Sembroski, G. Rochester, H.J. Rose, I.H. Bond, J. Gaidos, J. Grindlay, J.H. Buckley, J.J. Quenby, J. Knapp, J. Lloyd-Evans, J.P. Finley, J. Quinn, K. Harris, M. Catanese, M. Salamon, P. Kaaret, R. Ong, R.W. Lessard, S. Criswell, S. LeBohec, S.M. Bradbury, S. Swordy, T.C. Weekes, T. Sumner, V.V. Vassiliev","submitted_at":"1999-07-19T13:49:46Z","abstract_excerpt":"We give an overview of the current status and scientific goals of VERITAS, a proposed hexagonal array of seven 10 m aperture imaging Cherenkov telescopes. The selected site is Montosa Canyon (1390 m a.s.l.) at the Whipple Observatory, Arizona. Each telescope, of 12 m focal length, will initially be equipped with a 499 element photomultiplier camera covering a 3.5 degree field of view. A central station will initiate the readout of 500 MHz FADCs upon receipt of multiple telescope triggers. The minimum detectable flux sensitivity will be 0.5% of the Crab Nebula flux at 200 GeV. Detailed simulati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9907248","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":"2026-05-18T04:33:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z+TihAwDfxNJob6g1v8aej+NOfkqfclHdLfyv4QWBTSD5+f2HFvME/b/f6yRjTQW2EiQebZDzPVjzPzVeT4WBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:15:43.580668Z"},"content_sha256":"f6720c4e3454e3757efc03202b62c9f6da8ceae6cbb22a035701fd90d28fd687","schema_version":"1.0","event_id":"sha256:f6720c4e3454e3757efc03202b62c9f6da8ceae6cbb22a035701fd90d28fd687"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2XAZKE54NNV7HTQPS2S4HJKF5J/bundle.json","state_url":"https://pith.science/pith/2XAZKE54NNV7HTQPS2S4HJKF5J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2XAZKE54NNV7HTQPS2S4HJKF5J/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":"2026-05-28T03:15:43Z","links":{"resolver":"https://pith.science/pith/2XAZKE54NNV7HTQPS2S4HJKF5J","bundle":"https://pith.science/pith/2XAZKE54NNV7HTQPS2S4HJKF5J/bundle.json","state":"https://pith.science/pith/2XAZKE54NNV7HTQPS2S4HJKF5J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2XAZKE54NNV7HTQPS2S4HJKF5J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:2XAZKE54NNV7HTQPS2S4HJKF5J","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":"82b84c8c4bcaf20e5712f6826a351a4d00bc2430b8316259d3fd21da80f6024d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-07-19T13:49:46Z","title_canon_sha256":"031136ddf5832047b2eed0c2b3d9fecc3c17670449aac9b489cecdc0cf775d3e"},"schema_version":"1.0","source":{"id":"astro-ph/9907248","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9907248","created_at":"2026-05-18T04:33:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9907248v1","created_at":"2026-05-18T04:33:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9907248","created_at":"2026-05-18T04:33:37Z"},{"alias_kind":"pith_short_12","alias_value":"2XAZKE54NNV7","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"2XAZKE54NNV7HTQP","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"2XAZKE54","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:f6720c4e3454e3757efc03202b62c9f6da8ceae6cbb22a035701fd90d28fd687","target":"graph","created_at":"2026-05-18T04:33:37Z","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 give an overview of the current status and scientific goals of VERITAS, a proposed hexagonal array of seven 10 m aperture imaging Cherenkov telescopes. The selected site is Montosa Canyon (1390 m a.s.l.) at the Whipple Observatory, Arizona. Each telescope, of 12 m focal length, will initially be equipped with a 499 element photomultiplier camera covering a 3.5 degree field of view. A central station will initiate the readout of 500 MHz FADCs upon receipt of multiple telescope triggers. The minimum detectable flux sensitivity will be 0.5% of the Crab Nebula flux at 200 GeV. Detailed simulati","authors_text":"A.C. Breslin, A.M. Hillas, B.L. Dingus, B. McKernan, D.A. Carter-Lewis, D.J. Fegan, D. Kieda, D. Mueller, F. Krennrich, G. Hermann, G.H. Sembroski, G. Rochester, H.J. Rose, I.H. Bond, J. Gaidos, J. Grindlay, J.H. Buckley, J.J. Quenby, J. Knapp, J. Lloyd-Evans, J.P. Finley, J. Quinn, K. Harris, M. Catanese, M. Salamon, P. Kaaret, R. Ong, R.W. Lessard, S. Criswell, S. LeBohec, S.M. Bradbury, S. Swordy, T.C. Weekes, T. Sumner, V.V. Vassiliev","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1999-07-19T13:49:46Z","title":"The Very Energetic Radiation Imaging Telescope Array System (VERITAS)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9907248","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":"sha256:243828528e892db7af0de2341014d12d78f4f8ee7ad520b4d210c7438b00f1b8","target":"record","created_at":"2026-05-18T04:33:37Z","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":"82b84c8c4bcaf20e5712f6826a351a4d00bc2430b8316259d3fd21da80f6024d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-07-19T13:49:46Z","title_canon_sha256":"031136ddf5832047b2eed0c2b3d9fecc3c17670449aac9b489cecdc0cf775d3e"},"schema_version":"1.0","source":{"id":"astro-ph/9907248","kind":"arxiv","version":1}},"canonical_sha256":"d5c19513bc6b6bf3ce0f96a5c3a545ea43a666bf43109df4a602cac0356deb80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5c19513bc6b6bf3ce0f96a5c3a545ea43a666bf43109df4a602cac0356deb80","first_computed_at":"2026-05-18T04:33:37.723839Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:33:37.723839Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ficP5+ImchN2isFKhjaJL8wNLd170oifCNRa8rrHfaUjd+y3NLrQlxGku0lDi2tbibq/2q/9hTQeQEIwlnFbDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:33:37.724375Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9907248","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:243828528e892db7af0de2341014d12d78f4f8ee7ad520b4d210c7438b00f1b8","sha256:f6720c4e3454e3757efc03202b62c9f6da8ceae6cbb22a035701fd90d28fd687"],"state_sha256":"64a80d0179995d2f5359de48b3ae07fbf7105800accbcbd9fc066c551d3854dd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/dd2L45T4HlZG8hq7U21FUE1UmskVV8dujJjYpiGY8I7f2lOHgaj0ldYOka9TFDpW/3Tp43yoXmhAS7s1UOPCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T03:15:43.582690Z","bundle_sha256":"ce0d626c2cffafa40514708aa9eb29f856db9fe26f37871a0302e4e8acdd612d"}}