{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:CFIUMCSDGXDGJBI5W2FCTAZLU4","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":"4324f47b59440cf8cac65f872791d92b220269f0f6c466423f83876c62c0e27b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-07-31T15:31:23Z","title_canon_sha256":"d5c1ce27eae81a33db676d9a6251c96e4ce1b92787bea737a3602953ff5a942d"},"schema_version":"1.0","source":{"id":"1307.8358","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.8358","created_at":"2026-05-18T03:17:01Z"},{"alias_kind":"arxiv_version","alias_value":"1307.8358v1","created_at":"2026-05-18T03:17:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.8358","created_at":"2026-05-18T03:17:01Z"},{"alias_kind":"pith_short_12","alias_value":"CFIUMCSDGXDG","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"CFIUMCSDGXDGJBI5","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"CFIUMCSD","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:f80b74f7223f173f5ecab9e80098aa4dc05716f7a28f155a2e125fe56c14bd20","target":"graph","created_at":"2026-05-18T03:17:01Z","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 VERITAS array is a set of four imaging atmospheric Cherenkov telescopes (IACTs) sensitive to gamma rays at energies between 85 GeV and 30 TeV. Each telescope is based on a tessellated mirror, 12 metres in diameter, which reflects light from a gamma-ray-induced air shower to form an image on a pixellated `camera' comprising 499 photomultiplier tubes. The image brightness is the primary measure of the gamma ray's energy so a knowledge of the mirror reflectivity is important. We describe here a method, pioneered by members of the MAGIC collaboration, to measure the whole-dish reflectivity, qu","authors_text":"David Hanna, Sean Griffin, Simon Archambault","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-07-31T15:31:23Z","title":"In-situ measurements of whole-dish reflectivity for VERITAS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.8358","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":"sha256:54f5be21beee66753793eb32f0cbf11f070ef851d87c71c3f630def03ec4e7cd","target":"record","created_at":"2026-05-18T03:17:01Z","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":"4324f47b59440cf8cac65f872791d92b220269f0f6c466423f83876c62c0e27b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-07-31T15:31:23Z","title_canon_sha256":"d5c1ce27eae81a33db676d9a6251c96e4ce1b92787bea737a3602953ff5a942d"},"schema_version":"1.0","source":{"id":"1307.8358","kind":"arxiv","version":1}},"canonical_sha256":"1151460a4335c664851db68a29832ba72ca5402daea860fd17a7c3d9277efc63","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1151460a4335c664851db68a29832ba72ca5402daea860fd17a7c3d9277efc63","first_computed_at":"2026-05-18T03:17:01.398092Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:17:01.398092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jV8d4uZGyDX+FWl5BHSsf7M/FpCe4WiZp6qM9Ho5xFPu8UGxYemVlIHFyS9VcjT7XYWRufDBnGoPqTsWeJkkBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:17:01.398913Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.8358","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:54f5be21beee66753793eb32f0cbf11f070ef851d87c71c3f630def03ec4e7cd","sha256:f80b74f7223f173f5ecab9e80098aa4dc05716f7a28f155a2e125fe56c14bd20"],"state_sha256":"4b7240742e22a81657e460625161f5a733abe6bfb589949c7f24e91b7bf1051a"}