{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:CZWX2U5VLXO324CNRQ3YKGUVIY","short_pith_number":"pith:CZWX2U5V","canonical_record":{"source":{"id":"2110.11097","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-10-21T12:36:19Z","cross_cats_sorted":[],"title_canon_sha256":"39ad1b14b691b49c7c9be5758114639460019f40a38367c9503356df87916d44","abstract_canon_sha256":"a5440e42339b71e003e62c9d967e19a0f4686c8bfed67aa9e2b9e7bc79cca806"},"schema_version":"1.0"},"canonical_sha256":"166d7d53b55dddbd704d8c37851a9546037cf2d3c1fed7be15509bc692343a0d","source":{"kind":"arxiv","id":"2110.11097","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2110.11097","created_at":"2026-07-05T05:44:47Z"},{"alias_kind":"arxiv_version","alias_value":"2110.11097v1","created_at":"2026-07-05T05:44:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.11097","created_at":"2026-07-05T05:44:47Z"},{"alias_kind":"pith_short_12","alias_value":"CZWX2U5VLXO3","created_at":"2026-07-05T05:44:47Z"},{"alias_kind":"pith_short_16","alias_value":"CZWX2U5VLXO324CN","created_at":"2026-07-05T05:44:47Z"},{"alias_kind":"pith_short_8","alias_value":"CZWX2U5V","created_at":"2026-07-05T05:44:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:CZWX2U5VLXO324CNRQ3YKGUVIY","target":"record","payload":{"canonical_record":{"source":{"id":"2110.11097","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-10-21T12:36:19Z","cross_cats_sorted":[],"title_canon_sha256":"39ad1b14b691b49c7c9be5758114639460019f40a38367c9503356df87916d44","abstract_canon_sha256":"a5440e42339b71e003e62c9d967e19a0f4686c8bfed67aa9e2b9e7bc79cca806"},"schema_version":"1.0"},"canonical_sha256":"166d7d53b55dddbd704d8c37851a9546037cf2d3c1fed7be15509bc692343a0d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:44:47.171649Z","signature_b64":"P8ZrJ12Q4NFFZjhwW8c0YGd+pm6ljNHLQuWGfsooA+nTuFlFtiLYdm6BsM6NNgwMXmoOV7+qPfovRLiEd7CmAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"166d7d53b55dddbd704d8c37851a9546037cf2d3c1fed7be15509bc692343a0d","last_reissued_at":"2026-07-05T05:44:47.171213Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:44:47.171213Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2110.11097","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":"2026-07-05T05:44:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AuIzw4BzKqbUrrlJT3z2efOnkvAZW6epnPYir+nQur3yqn35ADQQxqAKvnG18hKMISCgOCIClYQ0jlTUuNsuCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T15:14:40.226254Z"},"content_sha256":"d9e09b428620e9a6750bcfcbdc0a71cd92ee04bfc747524aab4da156b1eccb89","schema_version":"1.0","event_id":"sha256:d9e09b428620e9a6750bcfcbdc0a71cd92ee04bfc747524aab4da156b1eccb89"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:CZWX2U5VLXO324CNRQ3YKGUVIY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Prototype Open Event Reconstruction Pipeline for the Cherenkov Telescope Array","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Karl Kosack, Lukas Nickel, Maximilian N\\\"othe, Michele Peresano (for the CTA Consortium)","submitted_at":"2021-10-21T12:36:19Z","abstract_excerpt":"The Cherenkov Telescope Array (CTA) is the next-generation gamma-ray observatory currently under construction. It will improve over the current generation of imaging atmospheric Cherenkov telescopes (IACTs) by a factor of five to ten in sensitivity and it will be able to observe the whole sky from a combination of two sites: a northern site in La Palma, Spain, and a southern one in Paranal, Chile. CTA will also be the first open gamma-ray observatory. Accordingly, the data analysis pipeline is developed as open-source software. The event reconstruction pipeline accepts raw data of the telescop"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.11097","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/2110.11097/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":"2026-07-05T05:44:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H4cEtLg0FGHhYHNvsQaLIHDqtV3IgfsxlMeY1FOKCKcjsY2hRyDRreMDbGdEpLCFnpXwVsjqib9/IevT9c70AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T15:14:40.226816Z"},"content_sha256":"4cbf4ded2913d51d614466dad44d2670be348d2aedcd5c367ccdb2556aba0c2c","schema_version":"1.0","event_id":"sha256:4cbf4ded2913d51d614466dad44d2670be348d2aedcd5c367ccdb2556aba0c2c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CZWX2U5VLXO324CNRQ3YKGUVIY/bundle.json","state_url":"https://pith.science/pith/CZWX2U5VLXO324CNRQ3YKGUVIY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CZWX2U5VLXO324CNRQ3YKGUVIY/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":"2026-08-04T15:14:40Z","links":{"resolver":"https://pith.science/pith/CZWX2U5VLXO324CNRQ3YKGUVIY","bundle":"https://pith.science/pith/CZWX2U5VLXO324CNRQ3YKGUVIY/bundle.json","state":"https://pith.science/pith/CZWX2U5VLXO324CNRQ3YKGUVIY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CZWX2U5VLXO324CNRQ3YKGUVIY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:CZWX2U5VLXO324CNRQ3YKGUVIY","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":"a5440e42339b71e003e62c9d967e19a0f4686c8bfed67aa9e2b9e7bc79cca806","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-10-21T12:36:19Z","title_canon_sha256":"39ad1b14b691b49c7c9be5758114639460019f40a38367c9503356df87916d44"},"schema_version":"1.0","source":{"id":"2110.11097","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2110.11097","created_at":"2026-07-05T05:44:47Z"},{"alias_kind":"arxiv_version","alias_value":"2110.11097v1","created_at":"2026-07-05T05:44:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.11097","created_at":"2026-07-05T05:44:47Z"},{"alias_kind":"pith_short_12","alias_value":"CZWX2U5VLXO3","created_at":"2026-07-05T05:44:47Z"},{"alias_kind":"pith_short_16","alias_value":"CZWX2U5VLXO324CN","created_at":"2026-07-05T05:44:47Z"},{"alias_kind":"pith_short_8","alias_value":"CZWX2U5V","created_at":"2026-07-05T05:44:47Z"}],"graph_snapshots":[{"event_id":"sha256:4cbf4ded2913d51d614466dad44d2670be348d2aedcd5c367ccdb2556aba0c2c","target":"graph","created_at":"2026-07-05T05:44:47Z","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/2110.11097/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Cherenkov Telescope Array (CTA) is the next-generation gamma-ray observatory currently under construction. It will improve over the current generation of imaging atmospheric Cherenkov telescopes (IACTs) by a factor of five to ten in sensitivity and it will be able to observe the whole sky from a combination of two sites: a northern site in La Palma, Spain, and a southern one in Paranal, Chile. CTA will also be the first open gamma-ray observatory. Accordingly, the data analysis pipeline is developed as open-source software. The event reconstruction pipeline accepts raw data of the telescop","authors_text":"Karl Kosack, Lukas Nickel, Maximilian N\\\"othe, Michele Peresano (for the CTA Consortium)","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-10-21T12:36:19Z","title":"Prototype Open Event Reconstruction Pipeline for the Cherenkov Telescope Array"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.11097","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:d9e09b428620e9a6750bcfcbdc0a71cd92ee04bfc747524aab4da156b1eccb89","target":"record","created_at":"2026-07-05T05:44:47Z","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":"a5440e42339b71e003e62c9d967e19a0f4686c8bfed67aa9e2b9e7bc79cca806","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-10-21T12:36:19Z","title_canon_sha256":"39ad1b14b691b49c7c9be5758114639460019f40a38367c9503356df87916d44"},"schema_version":"1.0","source":{"id":"2110.11097","kind":"arxiv","version":1}},"canonical_sha256":"166d7d53b55dddbd704d8c37851a9546037cf2d3c1fed7be15509bc692343a0d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"166d7d53b55dddbd704d8c37851a9546037cf2d3c1fed7be15509bc692343a0d","first_computed_at":"2026-07-05T05:44:47.171213Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:44:47.171213Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P8ZrJ12Q4NFFZjhwW8c0YGd+pm6ljNHLQuWGfsooA+nTuFlFtiLYdm6BsM6NNgwMXmoOV7+qPfovRLiEd7CmAw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:44:47.171649Z","signed_message":"canonical_sha256_bytes"},"source_id":"2110.11097","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9e09b428620e9a6750bcfcbdc0a71cd92ee04bfc747524aab4da156b1eccb89","sha256:4cbf4ded2913d51d614466dad44d2670be348d2aedcd5c367ccdb2556aba0c2c"],"state_sha256":"9d4acd2c1c366c48a951cdffa624d4d1c2ceb56811c5b523bf7ef276b964f0f4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qil/iyyjldfy0QYLw55E0GJGPH6VONfnA2LYLOAMEiHWoHU9R77dZ+nsjhL7vzDt50SG2boN1tvpyuINXy26CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T15:14:40.231636Z","bundle_sha256":"3ecdf6287479ffef7066de72b4005d039bc6576b4b920092f5d7e6d688081029"}}