{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:5G3RVIY2UYGB2F7NIZKCD22VFN","short_pith_number":"pith:5G3RVIY2","canonical_record":{"source":{"id":"1509.00185","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-09-01T09:15:28Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"0bf05e679f6d1f3e7ae2c63b9ef2e3c396c05a60d9cfab24ac79360b4a47f5f3","abstract_canon_sha256":"fea8b7ac7c8dcbd967d5e628b8b9955c1ff09eca04f5f27415e79cba3452175f"},"schema_version":"1.0"},"canonical_sha256":"e9b71aa31aa60c1d17ed465421eb552b6cc5fd60e5705bc69bf930b015dc3c12","source":{"kind":"arxiv","id":"1509.00185","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.00185","created_at":"2026-07-04T23:55:00Z"},{"alias_kind":"arxiv_version","alias_value":"1509.00185v1","created_at":"2026-07-04T23:55:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.00185","created_at":"2026-07-04T23:55:00Z"},{"alias_kind":"pith_short_12","alias_value":"5G3RVIY2UYGB","created_at":"2026-07-04T23:55:00Z"},{"alias_kind":"pith_short_16","alias_value":"5G3RVIY2UYGB2F7N","created_at":"2026-07-04T23:55:00Z"},{"alias_kind":"pith_short_8","alias_value":"5G3RVIY2","created_at":"2026-07-04T23:55:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:5G3RVIY2UYGB2F7NIZKCD22VFN","target":"record","payload":{"canonical_record":{"source":{"id":"1509.00185","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-09-01T09:15:28Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"0bf05e679f6d1f3e7ae2c63b9ef2e3c396c05a60d9cfab24ac79360b4a47f5f3","abstract_canon_sha256":"fea8b7ac7c8dcbd967d5e628b8b9955c1ff09eca04f5f27415e79cba3452175f"},"schema_version":"1.0"},"canonical_sha256":"e9b71aa31aa60c1d17ed465421eb552b6cc5fd60e5705bc69bf930b015dc3c12","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:55:00.922617Z","signature_b64":"Ideo9HjyPXPxvybR0pHNPQoN3tl5Yo7xtlHHc5bhgayGKp5uvsGhDJyTpeGk6qf+r6+sjak3fPNSeRYspKmRAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e9b71aa31aa60c1d17ed465421eb552b6cc5fd60e5705bc69bf930b015dc3c12","last_reissued_at":"2026-07-04T23:55:00.922141Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:55:00.922141Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.00185","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":"2026-07-04T23:55:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YYwvJZy1XPwcDwUH+Zy7sLF+fwfY1o8Pb9kjdkt4qVwgpNk+kn+D2T06GG2zascSYl/jYl9VYmMDthsfiTCKDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:28:02.124267Z"},"content_sha256":"c37f084534a57fd8699987daa25c0b0e10c9eba37704d02568cb53083cfe8116","schema_version":"1.0","event_id":"sha256:c37f084534a57fd8699987daa25c0b0e10c9eba37704d02568cb53083cfe8116"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:5G3RVIY2UYGB2F7NIZKCD22VFN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Flasher and muon-based calibration of the GCT telescopes proposed for the Cherenkov Telescope Array","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"Anthony M. Brown, Michael Daniel, Paula M. Chadwick, Richard White (for the CTA consortium), Thomas Armstrong","submitted_at":"2015-09-01T09:15:28Z","abstract_excerpt":"The GCT is a dual-mirror Small-Sized-Telescope prototype proposed for the Cherenkov Telescope Array. Calibration of the GCT's camera is primarily achieved with LED-based flasher units capable of producing $\\sim4$ ns FWHM pulses of 400 nm light across a large dynamic range, from 0.1 up to 1000 photoelectrons. The flasher units are housed in the four corners of the camera's focal plane and illuminate it via reflection from the secondary mirror. These flasher units are adaptable to allow several calibration scenarios to be accomplished: camera flat-fielding, linearity measurements (up to and past"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.00185","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1509.00185/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T23:55:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nHJUHpozZEtmtoqZZl0srOv2IxFJnAQJ1Z9wazjbB0Aa/OG8v6poi4RHwzBdmgqK2uKgWlG9tcx+Ori01y/NDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T17:28:02.124797Z"},"content_sha256":"e253f9ce50b98dbda40ecb62e63acfe4f13d682674fd3db079283b6981df2da8","schema_version":"1.0","event_id":"sha256:e253f9ce50b98dbda40ecb62e63acfe4f13d682674fd3db079283b6981df2da8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5G3RVIY2UYGB2F7NIZKCD22VFN/bundle.json","state_url":"https://pith.science/pith/5G3RVIY2UYGB2F7NIZKCD22VFN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5G3RVIY2UYGB2F7NIZKCD22VFN/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":"2026-08-03T17:28:02Z","links":{"resolver":"https://pith.science/pith/5G3RVIY2UYGB2F7NIZKCD22VFN","bundle":"https://pith.science/pith/5G3RVIY2UYGB2F7NIZKCD22VFN/bundle.json","state":"https://pith.science/pith/5G3RVIY2UYGB2F7NIZKCD22VFN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5G3RVIY2UYGB2F7NIZKCD22VFN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:5G3RVIY2UYGB2F7NIZKCD22VFN","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":"fea8b7ac7c8dcbd967d5e628b8b9955c1ff09eca04f5f27415e79cba3452175f","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-09-01T09:15:28Z","title_canon_sha256":"0bf05e679f6d1f3e7ae2c63b9ef2e3c396c05a60d9cfab24ac79360b4a47f5f3"},"schema_version":"1.0","source":{"id":"1509.00185","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.00185","created_at":"2026-07-04T23:55:00Z"},{"alias_kind":"arxiv_version","alias_value":"1509.00185v1","created_at":"2026-07-04T23:55:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.00185","created_at":"2026-07-04T23:55:00Z"},{"alias_kind":"pith_short_12","alias_value":"5G3RVIY2UYGB","created_at":"2026-07-04T23:55:00Z"},{"alias_kind":"pith_short_16","alias_value":"5G3RVIY2UYGB2F7N","created_at":"2026-07-04T23:55:00Z"},{"alias_kind":"pith_short_8","alias_value":"5G3RVIY2","created_at":"2026-07-04T23:55:00Z"}],"graph_snapshots":[{"event_id":"sha256:e253f9ce50b98dbda40ecb62e63acfe4f13d682674fd3db079283b6981df2da8","target":"graph","created_at":"2026-07-04T23:55:00Z","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/1509.00185/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The GCT is a dual-mirror Small-Sized-Telescope prototype proposed for the Cherenkov Telescope Array. Calibration of the GCT's camera is primarily achieved with LED-based flasher units capable of producing $\\sim4$ ns FWHM pulses of 400 nm light across a large dynamic range, from 0.1 up to 1000 photoelectrons. The flasher units are housed in the four corners of the camera's focal plane and illuminate it via reflection from the secondary mirror. These flasher units are adaptable to allow several calibration scenarios to be accomplished: camera flat-fielding, linearity measurements (up to and past","authors_text":"Anthony M. Brown, Michael Daniel, Paula M. Chadwick, Richard White (for the CTA consortium), Thomas Armstrong","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-09-01T09:15:28Z","title":"Flasher and muon-based calibration of the GCT telescopes proposed for the Cherenkov Telescope Array"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.00185","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:c37f084534a57fd8699987daa25c0b0e10c9eba37704d02568cb53083cfe8116","target":"record","created_at":"2026-07-04T23:55:00Z","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":"fea8b7ac7c8dcbd967d5e628b8b9955c1ff09eca04f5f27415e79cba3452175f","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-09-01T09:15:28Z","title_canon_sha256":"0bf05e679f6d1f3e7ae2c63b9ef2e3c396c05a60d9cfab24ac79360b4a47f5f3"},"schema_version":"1.0","source":{"id":"1509.00185","kind":"arxiv","version":1}},"canonical_sha256":"e9b71aa31aa60c1d17ed465421eb552b6cc5fd60e5705bc69bf930b015dc3c12","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e9b71aa31aa60c1d17ed465421eb552b6cc5fd60e5705bc69bf930b015dc3c12","first_computed_at":"2026-07-04T23:55:00.922141Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:55:00.922141Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ideo9HjyPXPxvybR0pHNPQoN3tl5Yo7xtlHHc5bhgayGKp5uvsGhDJyTpeGk6qf+r6+sjak3fPNSeRYspKmRAw==","signature_status":"signed_v1","signed_at":"2026-07-04T23:55:00.922617Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.00185","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c37f084534a57fd8699987daa25c0b0e10c9eba37704d02568cb53083cfe8116","sha256:e253f9ce50b98dbda40ecb62e63acfe4f13d682674fd3db079283b6981df2da8"],"state_sha256":"f05a8666331b29fcb014b070873c73ead4e64002beae8beae1a78ea9a295aa7a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J7dcLnRPNlFi++uW3scD7m+xp2KZJKJo/oZe7cJD95jNF0YHVCQ4ewCqSeFP/l0ydsejV5S7pvj4PCMIF06pCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T17:28:02.129295Z","bundle_sha256":"862fafc466b428f685c770485766014214eb3b3487b3621ff8d0b405540c62fd"}}