{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:EYQNKNYFL2C3UC343SL3MXVVJV","short_pith_number":"pith:EYQNKNYF","canonical_record":{"source":{"id":"1907.08171","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-17T12:34:04Z","cross_cats_sorted":[],"title_canon_sha256":"84bb8af585d3bab2c7df1280bb110553a80e633ccced4741f651035687f4d021","abstract_canon_sha256":"a80e4f5fe8ea4ed37234d8309f18a2f25720079c2178caa352f073f8f95e1ef3"},"schema_version":"1.0"},"canonical_sha256":"2620d537055e85ba0b7cdc97b65eb54d68891f41eabc7dfd3d440995c48d8064","source":{"kind":"arxiv","id":"1907.08171","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.08171","created_at":"2026-05-17T23:40:14Z"},{"alias_kind":"arxiv_version","alias_value":"1907.08171v1","created_at":"2026-05-17T23:40:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08171","created_at":"2026-05-17T23:40:14Z"},{"alias_kind":"pith_short_12","alias_value":"EYQNKNYFL2C3","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"EYQNKNYFL2C3UC34","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"EYQNKNYF","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:EYQNKNYFL2C3UC343SL3MXVVJV","target":"record","payload":{"canonical_record":{"source":{"id":"1907.08171","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-17T12:34:04Z","cross_cats_sorted":[],"title_canon_sha256":"84bb8af585d3bab2c7df1280bb110553a80e633ccced4741f651035687f4d021","abstract_canon_sha256":"a80e4f5fe8ea4ed37234d8309f18a2f25720079c2178caa352f073f8f95e1ef3"},"schema_version":"1.0"},"canonical_sha256":"2620d537055e85ba0b7cdc97b65eb54d68891f41eabc7dfd3d440995c48d8064","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:14.838178Z","signature_b64":"NnL6I3fxYegi2uhUf3wHCbVck5qXuGZMxfhYvr4FfBq9VD4Wxu189LpM+8syOnqJYBx270buyWTFrViU3I2WBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2620d537055e85ba0b7cdc97b65eb54d68891f41eabc7dfd3d440995c48d8064","last_reissued_at":"2026-05-17T23:40:14.837444Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:14.837444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.08171","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":"2026-05-17T23:40:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PX98ozyiicjSGbZE1F7GMhjElXgk9T2NQW49/WUExFvJ0cMwGlH+XTQJmEI/PXRH7W3gnVkeLa7Q//dtQ+u0CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:00:12.069588Z"},"content_sha256":"c8e12a52122af8bd80287de0a7c5137f7ffe819295878887ec1c834aeb89ba56","schema_version":"1.0","event_id":"sha256:c8e12a52122af8bd80287de0a7c5137f7ffe819295878887ec1c834aeb89ba56"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:EYQNKNYFL2C3UC343SL3MXVVJV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Performance of the Cherenkov Telescope Array","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Moralejo (for the CTA Consortium), G. Maier, J. Bregeon, J. Hinton, K. Bernl\\\"ohr, L. Arrabito, P. Cumani, T. Hassan","submitted_at":"2019-07-17T12:34:04Z","abstract_excerpt":"The Cherenkov Telescope Array (CTA) is expected to become the by far largest and most sensitive observatory for very-high-energy gamma rays in the energy range from 20 GeV to more than 300 TeV. CTA will be capable of detecting gamma rays from extremely faint sources with unprecedented precision on energy and direction. The performance of the future observatory derived from detailed Monte Carlo simulations is presented in this contribution for the two CTA sites located on the island of La Palma (Spain) and near Paranal (Chile). This includes the evaluation of CTA sensitivity over observations p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08171","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":"2026-05-17T23:40:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EGLVpOjmdCH16tqdJzu0dIick2TJzW4/ZkKAY01LDl6n7T7HbSTiiBQG3KehkJw3YU7USVWLj15PH6zV3wbuDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:00:12.069939Z"},"content_sha256":"70888d7cbd892a36a5604c09d8f8119b6f12d7d5c9b72f46003cee387a0f283e","schema_version":"1.0","event_id":"sha256:70888d7cbd892a36a5604c09d8f8119b6f12d7d5c9b72f46003cee387a0f283e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EYQNKNYFL2C3UC343SL3MXVVJV/bundle.json","state_url":"https://pith.science/pith/EYQNKNYFL2C3UC343SL3MXVVJV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EYQNKNYFL2C3UC343SL3MXVVJV/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":"2026-05-28T08:00:12Z","links":{"resolver":"https://pith.science/pith/EYQNKNYFL2C3UC343SL3MXVVJV","bundle":"https://pith.science/pith/EYQNKNYFL2C3UC343SL3MXVVJV/bundle.json","state":"https://pith.science/pith/EYQNKNYFL2C3UC343SL3MXVVJV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EYQNKNYFL2C3UC343SL3MXVVJV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:EYQNKNYFL2C3UC343SL3MXVVJV","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":"a80e4f5fe8ea4ed37234d8309f18a2f25720079c2178caa352f073f8f95e1ef3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-17T12:34:04Z","title_canon_sha256":"84bb8af585d3bab2c7df1280bb110553a80e633ccced4741f651035687f4d021"},"schema_version":"1.0","source":{"id":"1907.08171","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.08171","created_at":"2026-05-17T23:40:14Z"},{"alias_kind":"arxiv_version","alias_value":"1907.08171v1","created_at":"2026-05-17T23:40:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08171","created_at":"2026-05-17T23:40:14Z"},{"alias_kind":"pith_short_12","alias_value":"EYQNKNYFL2C3","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"EYQNKNYFL2C3UC34","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"EYQNKNYF","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:70888d7cbd892a36a5604c09d8f8119b6f12d7d5c9b72f46003cee387a0f283e","target":"graph","created_at":"2026-05-17T23:40:14Z","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 Cherenkov Telescope Array (CTA) is expected to become the by far largest and most sensitive observatory for very-high-energy gamma rays in the energy range from 20 GeV to more than 300 TeV. CTA will be capable of detecting gamma rays from extremely faint sources with unprecedented precision on energy and direction. The performance of the future observatory derived from detailed Monte Carlo simulations is presented in this contribution for the two CTA sites located on the island of La Palma (Spain) and near Paranal (Chile). This includes the evaluation of CTA sensitivity over observations p","authors_text":"A. Moralejo (for the CTA Consortium), G. Maier, J. Bregeon, J. Hinton, K. Bernl\\\"ohr, L. Arrabito, P. Cumani, T. Hassan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-17T12:34:04Z","title":"Performance of the Cherenkov Telescope Array"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08171","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:c8e12a52122af8bd80287de0a7c5137f7ffe819295878887ec1c834aeb89ba56","target":"record","created_at":"2026-05-17T23:40:14Z","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":"a80e4f5fe8ea4ed37234d8309f18a2f25720079c2178caa352f073f8f95e1ef3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-17T12:34:04Z","title_canon_sha256":"84bb8af585d3bab2c7df1280bb110553a80e633ccced4741f651035687f4d021"},"schema_version":"1.0","source":{"id":"1907.08171","kind":"arxiv","version":1}},"canonical_sha256":"2620d537055e85ba0b7cdc97b65eb54d68891f41eabc7dfd3d440995c48d8064","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2620d537055e85ba0b7cdc97b65eb54d68891f41eabc7dfd3d440995c48d8064","first_computed_at":"2026-05-17T23:40:14.837444Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:14.837444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NnL6I3fxYegi2uhUf3wHCbVck5qXuGZMxfhYvr4FfBq9VD4Wxu189LpM+8syOnqJYBx270buyWTFrViU3I2WBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:14.838178Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.08171","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c8e12a52122af8bd80287de0a7c5137f7ffe819295878887ec1c834aeb89ba56","sha256:70888d7cbd892a36a5604c09d8f8119b6f12d7d5c9b72f46003cee387a0f283e"],"state_sha256":"937424a16ff5be9fb9cb9f90c8033a6603c6357961ad53d8234c7257b0ac9fd9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"53qSwFxvgPSKajDPVjkuEWQT8MbDNQEi3/1EFBVKeNFYM+IWyinajTnY5kaT8qtuRXrWjw4Bg3mm3Ozr+OnVAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T08:00:12.071973Z","bundle_sha256":"06549054f7a8e56d331ad7afa06d8a249b11e2f30c9da01742c46abd68aa365d"}}