{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:CIMTOJ76C5ZFWYGMODYUL5CFZX","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":"ae49161f22c524a4af5e01ed40bbc733721691814faffea34967f8cbd09bb396","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-07-10T14:41:39Z","title_canon_sha256":"9e60ea31c76f6643f65ae8b005f2383d7b76a2e4bdfeaaf9c422538808d352df"},"schema_version":"1.0","source":{"id":"1307.2807","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.2807","created_at":"2026-07-04T23:54:49Z"},{"alias_kind":"arxiv_version","alias_value":"1307.2807v1","created_at":"2026-07-04T23:54:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.2807","created_at":"2026-07-04T23:54:49Z"},{"alias_kind":"pith_short_12","alias_value":"CIMTOJ76C5ZF","created_at":"2026-07-04T23:54:49Z"},{"alias_kind":"pith_short_16","alias_value":"CIMTOJ76C5ZFWYGM","created_at":"2026-07-04T23:54:49Z"},{"alias_kind":"pith_short_8","alias_value":"CIMTOJ76","created_at":"2026-07-04T23:54:49Z"}],"graph_snapshots":[{"event_id":"sha256:a9e11ff65b72d5bccb06f532a6f5fc32640878252c70e6533f38ee8da4514a42","target":"graph","created_at":"2026-07-04T23:54:49Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1307.2807/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Compact High Energy Camera (CHEC) is a camera-development project involving UK, US, Japanese and Dutch institutes for the dual-mirror Small-Sized Telescopes (SST-2M) of the Cherenkov Telescope Array (CTA). Two CHEC prototypes, based on different photosensors are funded and will be assembled and tested in the UK over the next ~18 months. CHEC is designed to record flashes of Cherenkov light lasting from a few to a hundred nanoseconds, with typical RMS image width and length of ~0.2 x 1.0 degrees, and has a 9 degree field of view. The physical camera geometry is dictated by the telescope opt","authors_text":"A. Okumura, D. Berge, D. Ross, D. Williams (for the CTA Consortium), G. Cotter, G. S. Varner, H. Tajima, J. Buckley, J. Hinton, J. Lapington, J. Schmoll, J. Sykes, J. Vandenbroucke, J. Vink, L. Sapozhnikov, M. K. Daniel, N. Hidaka, P. M. Chadwick, P. Moore, P. Sutcliffe, R. J. White, S. Funk, S. Markoff, S. Nolan, S. Ohm, T. Greenshaw","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-07-10T14:41:39Z","title":"A Compact High Energy Camera for the Cherenkov Telescope Array"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.2807","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:ee12ed446ac195478d310320672673eb2cce721aafa691a9ba8ffdd6258cda0c","target":"record","created_at":"2026-07-04T23:54:49Z","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":"ae49161f22c524a4af5e01ed40bbc733721691814faffea34967f8cbd09bb396","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-07-10T14:41:39Z","title_canon_sha256":"9e60ea31c76f6643f65ae8b005f2383d7b76a2e4bdfeaaf9c422538808d352df"},"schema_version":"1.0","source":{"id":"1307.2807","kind":"arxiv","version":1}},"canonical_sha256":"12193727fe17725b60cc70f145f445cde0cb8c726b073ce572380537d0e34770","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"12193727fe17725b60cc70f145f445cde0cb8c726b073ce572380537d0e34770","first_computed_at":"2026-07-04T23:54:49.839137Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:54:49.839137Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d7aaBVjSORTlP/m12W2APac7T6XIW0qqMAeqc8CuQH7tOS6Y1EOs+01r3oFVEWGhWcWZk4vJKMYgmKNtt4UQCg==","signature_status":"signed_v1","signed_at":"2026-07-04T23:54:49.839552Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.2807","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ee12ed446ac195478d310320672673eb2cce721aafa691a9ba8ffdd6258cda0c","sha256:a9e11ff65b72d5bccb06f532a6f5fc32640878252c70e6533f38ee8da4514a42"],"state_sha256":"a21c473aa6e51ff638671f8be9cfe20cc367db7a1505af6fb62b033ea2f4a29e"}