{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:WUYHNHSJHT37R3AIW2IJ5DOJEZ","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":"d6d018ddc06481286fec8417928658968e8a9944b8ac0c7ead735d553216bbfb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-07-05T13:59:46Z","title_canon_sha256":"25211a5cf2163f65583ef960b89d9f3b5463e06fe8d134d5efa7e376654bedfc"},"schema_version":"1.0","source":{"id":"0907.0853","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.0853","created_at":"2026-07-04T15:45:32Z"},{"alias_kind":"arxiv_version","alias_value":"0907.0853v1","created_at":"2026-07-04T15:45:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.0853","created_at":"2026-07-04T15:45:32Z"},{"alias_kind":"pith_short_12","alias_value":"WUYHNHSJHT37","created_at":"2026-07-04T15:45:32Z"},{"alias_kind":"pith_short_16","alias_value":"WUYHNHSJHT37R3AI","created_at":"2026-07-04T15:45:32Z"},{"alias_kind":"pith_short_8","alias_value":"WUYHNHSJ","created_at":"2026-07-04T15:45:32Z"}],"graph_snapshots":[{"event_id":"sha256:f01cf23022bedab31dc0db60f2c978f4bb8063870145b1288b3c67abd7675fcf","target":"graph","created_at":"2026-07-04T15:45:32Z","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/0907.0853/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Geigermode avalanche photodiodes (G-APD) are novel photodetectors, which can detect single photons. This type of diodes might become an alternative to photomultipliers (PMT) in next-generation Imaging Air Cherenkov Telescopes. Prospects, limitations and development directions are be discussed. Results from first tests are reported.","authors_text":"2), Dieter Renker (4) ((1) Max-Planck-Instit f\\\"ur Physik, Eckart Lorenz (1, Germany (2) ETH Z\\\"urich, Hiroko Miyamoto (1), M\\\"unchen, Nepomuk Otte (3), Razmick Mirzoyan (1), Switzerland), Switzerland (3) University of California at Santa Cruz, USA (4) PSI, Villingen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-07-05T13:59:46Z","title":"First tests and long-term prospects of Geigermode avalanche photodiodes as camera sensors for IACTs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.0853","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:abd574cae1a276e219644ff8c88325e1054cfc234155608ec251c61b8519720e","target":"record","created_at":"2026-07-04T15:45:32Z","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":"d6d018ddc06481286fec8417928658968e8a9944b8ac0c7ead735d553216bbfb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-07-05T13:59:46Z","title_canon_sha256":"25211a5cf2163f65583ef960b89d9f3b5463e06fe8d134d5efa7e376654bedfc"},"schema_version":"1.0","source":{"id":"0907.0853","kind":"arxiv","version":1}},"canonical_sha256":"b530769e493cf7f8ec08b6909e8dc9267f963c91f20e7cbf820baf6da3175621","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b530769e493cf7f8ec08b6909e8dc9267f963c91f20e7cbf820baf6da3175621","first_computed_at":"2026-07-04T15:45:32.744387Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:45:32.744387Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tdGmI06umjwV1jlUMUVxdnVRtuimTklFe444whNBEC3m/PnhW+Wd8fHd3WAQ9SqhUNd4RfJT+2Xea30OANJgAA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:45:32.744909Z","signed_message":"canonical_sha256_bytes"},"source_id":"0907.0853","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:abd574cae1a276e219644ff8c88325e1054cfc234155608ec251c61b8519720e","sha256:f01cf23022bedab31dc0db60f2c978f4bb8063870145b1288b3c67abd7675fcf"],"state_sha256":"31725d798140be9029b54a2758e2863976c22a7c3953b06db2c5fcbf5b3ba5d0"}