{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:BDZIFS4GU7YS5A4BJGFRPZPEIM","short_pith_number":"pith:BDZIFS4G","canonical_record":{"source":{"id":"1805.12210","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-05-28T09:06:43Z","cross_cats_sorted":[],"title_canon_sha256":"0c75d0803cf046a18144a8fb2b409e97c2d1a8a25f4e6504a00d42c7055ffd97","abstract_canon_sha256":"f1be11df04a8d9be22e1a5de94c0d1953ccdfb7b0a09d068372b5acaf25dc0e2"},"schema_version":"1.0"},"canonical_sha256":"08f282cb86a7f12e8381498b17e5e4430519fd1183327271953010c689bc2899","source":{"kind":"arxiv","id":"1805.12210","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.12210","created_at":"2026-05-17T23:52:07Z"},{"alias_kind":"arxiv_version","alias_value":"1805.12210v2","created_at":"2026-05-17T23:52:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.12210","created_at":"2026-05-17T23:52:07Z"},{"alias_kind":"pith_short_12","alias_value":"BDZIFS4GU7YS","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"BDZIFS4GU7YS5A4B","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"BDZIFS4G","created_at":"2026-05-18T12:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:BDZIFS4GU7YS5A4BJGFRPZPEIM","target":"record","payload":{"canonical_record":{"source":{"id":"1805.12210","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-05-28T09:06:43Z","cross_cats_sorted":[],"title_canon_sha256":"0c75d0803cf046a18144a8fb2b409e97c2d1a8a25f4e6504a00d42c7055ffd97","abstract_canon_sha256":"f1be11df04a8d9be22e1a5de94c0d1953ccdfb7b0a09d068372b5acaf25dc0e2"},"schema_version":"1.0"},"canonical_sha256":"08f282cb86a7f12e8381498b17e5e4430519fd1183327271953010c689bc2899","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:52:07.601930Z","signature_b64":"H50GJauT3lO/Erax0Y8MTM8W0idmBXRXFRCU94g3LssBlwYCUN6sgbEqwbYy40JIKOgtaQaPpexlxl/0We7pDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"08f282cb86a7f12e8381498b17e5e4430519fd1183327271953010c689bc2899","last_reissued_at":"2026-05-17T23:52:07.601516Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:52:07.601516Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.12210","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":"2026-05-17T23:52:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EnQSKlWd/rQJowBw6giJCk+BWldkkmJMeMvMQ1HSGgPVplnOjMi6V3xmV8drnW2ngF00gkyKU9UjByBXPL99Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:40:29.188145Z"},"content_sha256":"590e0efc870166d8192ffc9673f4905bd0788e714c48d37fb733e9a8dd266d95","schema_version":"1.0","event_id":"sha256:590e0efc870166d8192ffc9673f4905bd0788e714c48d37fb733e9a8dd266d95"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:BDZIFS4GU7YS5A4BJGFRPZPEIM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Design of a general scientific CCD simulation and test system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"Cheng Chen, Guang-Yu Zhang, Hong-Fei Zhang, Jian-Min Wang, Jian Wang, Qi-Jie Tang, Yi Feng, Yi Zhang, Zi-ang Wang","submitted_at":"2018-05-28T09:06:43Z","abstract_excerpt":"In this paper, we introduce a general scientific CCD simulation and test system which can meet the test requirements of different types of CCD chips from E2V company, such as measuring different signals output from modules of a CCD controller including power supply, fan, temperature control module, crystal oscillator, shutter and clock-bias generator. Furthermore, the video signal of the CCD detector can be simulated and superimposed with random noise to verify the performance of the video sampling circuit of the CCD controller. The simulation and test system was successful used for the CCD co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.12210","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":"2026-05-17T23:52:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"seP0KSucnq62HQZ37Bow9cgb3AnI+OPcLpOHnWGcKoOFrrNoQbao+54nNiiLHUablz9WdH4oewkr74nI3TBdAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:40:29.188773Z"},"content_sha256":"62de70a5f3d8fa286935a4689bde7b010120d6eb1341d3b769bbd4af3bd2a342","schema_version":"1.0","event_id":"sha256:62de70a5f3d8fa286935a4689bde7b010120d6eb1341d3b769bbd4af3bd2a342"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BDZIFS4GU7YS5A4BJGFRPZPEIM/bundle.json","state_url":"https://pith.science/pith/BDZIFS4GU7YS5A4BJGFRPZPEIM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BDZIFS4GU7YS5A4BJGFRPZPEIM/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":"2026-05-25T23:40:29Z","links":{"resolver":"https://pith.science/pith/BDZIFS4GU7YS5A4BJGFRPZPEIM","bundle":"https://pith.science/pith/BDZIFS4GU7YS5A4BJGFRPZPEIM/bundle.json","state":"https://pith.science/pith/BDZIFS4GU7YS5A4BJGFRPZPEIM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BDZIFS4GU7YS5A4BJGFRPZPEIM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:BDZIFS4GU7YS5A4BJGFRPZPEIM","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":"f1be11df04a8d9be22e1a5de94c0d1953ccdfb7b0a09d068372b5acaf25dc0e2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-05-28T09:06:43Z","title_canon_sha256":"0c75d0803cf046a18144a8fb2b409e97c2d1a8a25f4e6504a00d42c7055ffd97"},"schema_version":"1.0","source":{"id":"1805.12210","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.12210","created_at":"2026-05-17T23:52:07Z"},{"alias_kind":"arxiv_version","alias_value":"1805.12210v2","created_at":"2026-05-17T23:52:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.12210","created_at":"2026-05-17T23:52:07Z"},{"alias_kind":"pith_short_12","alias_value":"BDZIFS4GU7YS","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"BDZIFS4GU7YS5A4B","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"BDZIFS4G","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:62de70a5f3d8fa286935a4689bde7b010120d6eb1341d3b769bbd4af3bd2a342","target":"graph","created_at":"2026-05-17T23:52:07Z","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":"In this paper, we introduce a general scientific CCD simulation and test system which can meet the test requirements of different types of CCD chips from E2V company, such as measuring different signals output from modules of a CCD controller including power supply, fan, temperature control module, crystal oscillator, shutter and clock-bias generator. Furthermore, the video signal of the CCD detector can be simulated and superimposed with random noise to verify the performance of the video sampling circuit of the CCD controller. The simulation and test system was successful used for the CCD co","authors_text":"Cheng Chen, Guang-Yu Zhang, Hong-Fei Zhang, Jian-Min Wang, Jian Wang, Qi-Jie Tang, Yi Feng, Yi Zhang, Zi-ang Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-05-28T09:06:43Z","title":"Design of a general scientific CCD simulation and test system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.12210","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":"sha256:590e0efc870166d8192ffc9673f4905bd0788e714c48d37fb733e9a8dd266d95","target":"record","created_at":"2026-05-17T23:52:07Z","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":"f1be11df04a8d9be22e1a5de94c0d1953ccdfb7b0a09d068372b5acaf25dc0e2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-05-28T09:06:43Z","title_canon_sha256":"0c75d0803cf046a18144a8fb2b409e97c2d1a8a25f4e6504a00d42c7055ffd97"},"schema_version":"1.0","source":{"id":"1805.12210","kind":"arxiv","version":2}},"canonical_sha256":"08f282cb86a7f12e8381498b17e5e4430519fd1183327271953010c689bc2899","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"08f282cb86a7f12e8381498b17e5e4430519fd1183327271953010c689bc2899","first_computed_at":"2026-05-17T23:52:07.601516Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:07.601516Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H50GJauT3lO/Erax0Y8MTM8W0idmBXRXFRCU94g3LssBlwYCUN6sgbEqwbYy40JIKOgtaQaPpexlxl/0We7pDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:07.601930Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.12210","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:590e0efc870166d8192ffc9673f4905bd0788e714c48d37fb733e9a8dd266d95","sha256:62de70a5f3d8fa286935a4689bde7b010120d6eb1341d3b769bbd4af3bd2a342"],"state_sha256":"00c8ac27831ff2c7a001b57ad0e5fbeb08cf144ea3a23ecbe99b306d99123951"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wj6d2VAbjRWugKn6Mbrs3Xi0HoVjXBwgtcSe/dtVqtiiFVqADkUQrXCQ+yuWkqmmaxBZNEiQRdEtKaETSwYlCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T23:40:29.191967Z","bundle_sha256":"7d2a88ef815b64129124572699129dbaa01f89cf48d557806a4309bd0f873e87"}}