{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:Q3FC45SDL6D5T55YIQHP6PRBBX","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":"9ccbfc9e764c1e4e517a174886f979b95f40c88ebb6c302d6cadf880af5add5c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-17T13:33:20Z","title_canon_sha256":"bd75c5b4f3f2275da9d7cc2da04a5cf4e0541d1c7579e622d3fa580a7741ee77"},"schema_version":"1.0","source":{"id":"0810.3155","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.3155","created_at":"2026-05-18T04:36:40Z"},{"alias_kind":"arxiv_version","alias_value":"0810.3155v1","created_at":"2026-05-18T04:36:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.3155","created_at":"2026-05-18T04:36:40Z"},{"alias_kind":"pith_short_12","alias_value":"Q3FC45SDL6D5","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"Q3FC45SDL6D5T55Y","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"Q3FC45SD","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:de36bef9bdc064e283e0cae0ead1382b0741f71b561627470a093a5d0da3061a","target":"graph","created_at":"2026-05-18T04:36:40Z","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 have constructed an optical photometer with microsecond time resolution, which is currently being operated on one of the H.E.S.S. telescopes. H.E.S.S. is an array of four Cherenkov telescopes, each with a 107 m^2 mirror, located in the Khomas highland in Namibia. In its normal mode of operation H.E.S.S. observes Cherenkov light from air showers generated by very high energy gamma-rays in the upper atmosphere. Our detector consists of seven photomultipliers, one in the center to record the lightcurve from the target and six concentric photomultipliers as a veto system to reject disturbing si","authors_text":"C. Deil (1), Germany), G. Hermann (1) ((1) Max-Planck-Institut f\\\"ur Kernphysik, Heidelberg, W. Domainko (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-17T13:33:20Z","title":"Microsecond Time Resolution Optical Photometry using a H.E.S.S. Cherenkov Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.3155","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":"sha256:7308afad06662a58fa2afecd6d3ca270c81a47e4fc01ed16db92a5983950cb58","target":"record","created_at":"2026-05-18T04:36:40Z","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":"9ccbfc9e764c1e4e517a174886f979b95f40c88ebb6c302d6cadf880af5add5c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-17T13:33:20Z","title_canon_sha256":"bd75c5b4f3f2275da9d7cc2da04a5cf4e0541d1c7579e622d3fa580a7741ee77"},"schema_version":"1.0","source":{"id":"0810.3155","kind":"arxiv","version":1}},"canonical_sha256":"86ca2e76435f87d9f7b8440eff3e210dff98cb358c976b7e9733445095b7a012","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"86ca2e76435f87d9f7b8440eff3e210dff98cb358c976b7e9733445095b7a012","first_computed_at":"2026-05-18T04:36:40.870579Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:36:40.870579Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f37UqH9rRYmipx/jHIIHn3Qu7oe1NCI35CqKU66j99LQNQqGFhOfYP1tWw1xCQ4v42R/Zvzoa9uzAudIKXcfCA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:36:40.870987Z","signed_message":"canonical_sha256_bytes"},"source_id":"0810.3155","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7308afad06662a58fa2afecd6d3ca270c81a47e4fc01ed16db92a5983950cb58","sha256:de36bef9bdc064e283e0cae0ead1382b0741f71b561627470a093a5d0da3061a"],"state_sha256":"90d404808ac16b33487b7849d995e2e50e9eac70ae449f9526213b6bf2a20aba"}