{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:7PEDLEJF26Y6JUO3K4V4UKVR2L","short_pith_number":"pith:7PEDLEJF","canonical_record":{"source":{"id":"1403.5747","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-03-23T13:03:10Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"d2daef65477924603f7d6ae8f426610dff65c2424e5228ff0ee97cab9aa0de27","abstract_canon_sha256":"e521239f88cb7406bf348027cfb000c6bc55d66d62da1d8d0fafadeff45bc468"},"schema_version":"1.0"},"canonical_sha256":"fbc8359125d7b1e4d1db572bca2ab1d2fc837f0989a0c075468e9817048d16ee","source":{"kind":"arxiv","id":"1403.5747","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.5747","created_at":"2026-05-18T02:32:14Z"},{"alias_kind":"arxiv_version","alias_value":"1403.5747v2","created_at":"2026-05-18T02:32:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.5747","created_at":"2026-05-18T02:32:14Z"},{"alias_kind":"pith_short_12","alias_value":"7PEDLEJF26Y6","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7PEDLEJF26Y6JUO3","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7PEDLEJF","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:7PEDLEJF26Y6JUO3K4V4UKVR2L","target":"record","payload":{"canonical_record":{"source":{"id":"1403.5747","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-03-23T13:03:10Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"d2daef65477924603f7d6ae8f426610dff65c2424e5228ff0ee97cab9aa0de27","abstract_canon_sha256":"e521239f88cb7406bf348027cfb000c6bc55d66d62da1d8d0fafadeff45bc468"},"schema_version":"1.0"},"canonical_sha256":"fbc8359125d7b1e4d1db572bca2ab1d2fc837f0989a0c075468e9817048d16ee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:32:14.115822Z","signature_b64":"aMTGSImmkz6NioOn7/Sl37f6dnfpOXwljdn5pCa5miuvAgIHf0LJsuy3ADS6NtPCNoHtFB36XGtaRl2sMe/5Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fbc8359125d7b1e4d1db572bca2ab1d2fc837f0989a0c075468e9817048d16ee","last_reissued_at":"2026-05-18T02:32:14.115049Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:32:14.115049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1403.5747","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:32:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G3kLI6PJXmiWhZ0FgwLTZ7szHrm8FWhmJiyYI5OWTaR/VUEj7D3JcZaWSUN41TtwWZpK3jOmYswcv0yBPb8UBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T17:15:01.226807Z"},"content_sha256":"364c0e7f583c84a1e7f76fd861ac845108bd4795ff9c11f4dcfdd38326f99905","schema_version":"1.0","event_id":"sha256:364c0e7f583c84a1e7f76fd861ac845108bd4795ff9c11f4dcfdd38326f99905"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:7PEDLEJF26Y6JUO3K4V4UKVR2L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Calibration and performance of the photon sensor response of FACT -- The First G-APD Cherenkov telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"astro-ph.IM","authors_text":"A. Biland, A.-K. Overkemping, A. Paravac, C. Haller, C. Hempfling, D. Dorner, D. Eisenacher, D. Hildebrand, D. Neise, E. Lyard, F. Pauss, F. Temme, G. Hughes, H. von Gunten, J. Bu{\\ss}, J. Freiwald, J.-P. Stucki, J. Thaele, K. Mannheim, K. Meier, L. Djambazov, M. L. Knoetig, O. Grimm, P. Vogler, Q. Weitzel, R. Walter, S. Einecke, S. Mueller, T. Bretz, T. Kr\\\"ahenb\\\"uhl, T. Steinbring, U. Horisberger, U. R\\\"oser, V. Commichau, W. Lustermann, W. Rhode","submitted_at":"2014-03-23T13:03:10Z","abstract_excerpt":"The First G-APD Cherenkov Telescope (FACT) is the first in-operation test of the performance of silicon photo detectors in Cherenkov Astronomy. For more than two years it is operated on La Palma, Canary Islands (Spain), for the purpose of long-term monitoring of astrophysical sources. For this, the performance of the photo detectors is crucial and therefore has been studied in great detail. Special care has been taken for their temperature and voltage dependence implementing a correction method to keep their properties stable. Several measurements have been carried out to monitor the performan"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.5747","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T02:32:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QuZ5sBENo06RPzCc+r6FO5KXDAQUQ/kOqv/+kR4Mjg5qCgMecbREHnZIn8Jxlz6J6CEdD4GfyK6mGVE5o+1rAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T17:15:01.227165Z"},"content_sha256":"befb4fc5bef6a499217761d3c86dec9f48629ec040a8aa9eccb0ff2704509e46","schema_version":"1.0","event_id":"sha256:befb4fc5bef6a499217761d3c86dec9f48629ec040a8aa9eccb0ff2704509e46"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7PEDLEJF26Y6JUO3K4V4UKVR2L/bundle.json","state_url":"https://pith.science/pith/7PEDLEJF26Y6JUO3K4V4UKVR2L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7PEDLEJF26Y6JUO3K4V4UKVR2L/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":"2026-05-30T17:15:01Z","links":{"resolver":"https://pith.science/pith/7PEDLEJF26Y6JUO3K4V4UKVR2L","bundle":"https://pith.science/pith/7PEDLEJF26Y6JUO3K4V4UKVR2L/bundle.json","state":"https://pith.science/pith/7PEDLEJF26Y6JUO3K4V4UKVR2L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7PEDLEJF26Y6JUO3K4V4UKVR2L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:7PEDLEJF26Y6JUO3K4V4UKVR2L","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":"e521239f88cb7406bf348027cfb000c6bc55d66d62da1d8d0fafadeff45bc468","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-03-23T13:03:10Z","title_canon_sha256":"d2daef65477924603f7d6ae8f426610dff65c2424e5228ff0ee97cab9aa0de27"},"schema_version":"1.0","source":{"id":"1403.5747","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.5747","created_at":"2026-05-18T02:32:14Z"},{"alias_kind":"arxiv_version","alias_value":"1403.5747v2","created_at":"2026-05-18T02:32:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.5747","created_at":"2026-05-18T02:32:14Z"},{"alias_kind":"pith_short_12","alias_value":"7PEDLEJF26Y6","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7PEDLEJF26Y6JUO3","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7PEDLEJF","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:befb4fc5bef6a499217761d3c86dec9f48629ec040a8aa9eccb0ff2704509e46","target":"graph","created_at":"2026-05-18T02:32:14Z","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 First G-APD Cherenkov Telescope (FACT) is the first in-operation test of the performance of silicon photo detectors in Cherenkov Astronomy. For more than two years it is operated on La Palma, Canary Islands (Spain), for the purpose of long-term monitoring of astrophysical sources. For this, the performance of the photo detectors is crucial and therefore has been studied in great detail. Special care has been taken for their temperature and voltage dependence implementing a correction method to keep their properties stable. Several measurements have been carried out to monitor the performan","authors_text":"A. Biland, A.-K. Overkemping, A. Paravac, C. Haller, C. Hempfling, D. Dorner, D. Eisenacher, D. Hildebrand, D. Neise, E. Lyard, F. Pauss, F. Temme, G. Hughes, H. von Gunten, J. Bu{\\ss}, J. Freiwald, J.-P. Stucki, J. Thaele, K. Mannheim, K. Meier, L. Djambazov, M. L. Knoetig, O. Grimm, P. Vogler, Q. Weitzel, R. Walter, S. Einecke, S. Mueller, T. Bretz, T. Kr\\\"ahenb\\\"uhl, T. Steinbring, U. Horisberger, U. R\\\"oser, V. Commichau, W. Lustermann, W. Rhode","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-03-23T13:03:10Z","title":"Calibration and performance of the photon sensor response of FACT -- The First G-APD Cherenkov telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.5747","kind":"arxiv","version":2},"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":"sha256:364c0e7f583c84a1e7f76fd861ac845108bd4795ff9c11f4dcfdd38326f99905","target":"record","created_at":"2026-05-18T02:32:14Z","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":"e521239f88cb7406bf348027cfb000c6bc55d66d62da1d8d0fafadeff45bc468","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-03-23T13:03:10Z","title_canon_sha256":"d2daef65477924603f7d6ae8f426610dff65c2424e5228ff0ee97cab9aa0de27"},"schema_version":"1.0","source":{"id":"1403.5747","kind":"arxiv","version":2}},"canonical_sha256":"fbc8359125d7b1e4d1db572bca2ab1d2fc837f0989a0c075468e9817048d16ee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fbc8359125d7b1e4d1db572bca2ab1d2fc837f0989a0c075468e9817048d16ee","first_computed_at":"2026-05-18T02:32:14.115049Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:32:14.115049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aMTGSImmkz6NioOn7/Sl37f6dnfpOXwljdn5pCa5miuvAgIHf0LJsuy3ADS6NtPCNoHtFB36XGtaRl2sMe/5Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:32:14.115822Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.5747","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:364c0e7f583c84a1e7f76fd861ac845108bd4795ff9c11f4dcfdd38326f99905","sha256:befb4fc5bef6a499217761d3c86dec9f48629ec040a8aa9eccb0ff2704509e46"],"state_sha256":"bd41448e584a84b8af8953f8856f47cad3cb81f436d1117d8b5ebf7d87ca0e69"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uJFetftQ/QKpk10V4weCks2v2O6gylI2E5FkM7F+nuYPKskMpOlU2DQOsoj2Fv6uw5FUcaAB4STf5/YniZC7Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T17:15:01.229138Z","bundle_sha256":"47f8618d1864b33ceeb56d867a328dcc85975a9c1a7d9d541813792d1ee7c48a"}}