{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:6WJGAES23Q3ML4WWGKFYZCCQMZ","short_pith_number":"pith:6WJGAES2","canonical_record":{"source":{"id":"2108.00834","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-08-02T12:45:12Z","cross_cats_sorted":[],"title_canon_sha256":"36e3ac1de8016c6b08cc346fc54f42cc53ef82ca94a8f5d36665d31627d4e49a","abstract_canon_sha256":"9edff5dce8b48a39cba04e46079980e3410a8e7b2156c00e1f68c6c5cfd45cd8"},"schema_version":"1.0"},"canonical_sha256":"f59260125adc36c5f2d6328b8c885066727889a0a697df4f00d585f51ad464d5","source":{"kind":"arxiv","id":"2108.00834","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.00834","created_at":"2026-07-05T03:02:27Z"},{"alias_kind":"arxiv_version","alias_value":"2108.00834v1","created_at":"2026-07-05T03:02:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.00834","created_at":"2026-07-05T03:02:27Z"},{"alias_kind":"pith_short_12","alias_value":"6WJGAES23Q3M","created_at":"2026-07-05T03:02:27Z"},{"alias_kind":"pith_short_16","alias_value":"6WJGAES23Q3ML4WW","created_at":"2026-07-05T03:02:27Z"},{"alias_kind":"pith_short_8","alias_value":"6WJGAES2","created_at":"2026-07-05T03:02:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:6WJGAES23Q3ML4WWGKFYZCCQMZ","target":"record","payload":{"canonical_record":{"source":{"id":"2108.00834","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-08-02T12:45:12Z","cross_cats_sorted":[],"title_canon_sha256":"36e3ac1de8016c6b08cc346fc54f42cc53ef82ca94a8f5d36665d31627d4e49a","abstract_canon_sha256":"9edff5dce8b48a39cba04e46079980e3410a8e7b2156c00e1f68c6c5cfd45cd8"},"schema_version":"1.0"},"canonical_sha256":"f59260125adc36c5f2d6328b8c885066727889a0a697df4f00d585f51ad464d5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:02:27.374745Z","signature_b64":"gdyez3qeY/9ZxvI3V14QFQnaNuiyWoPngd52tZsNM7aIBi0fuaX1hxCQLoibwHfaqW0qeB2Tp2cBt109WgT/AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f59260125adc36c5f2d6328b8c885066727889a0a697df4f00d585f51ad464d5","last_reissued_at":"2026-07-05T03:02:27.374266Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:02:27.374266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2108.00834","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":"2026-07-05T03:02:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BKWriI3WMgGCLRvQa3Zkl3Z+fmOrbfOexcvdk4BvyFd8BUJ24P7O9HCOjpxR8UJtKYHiuEo0eJTjl8kHVjTlDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T21:52:56.968507Z"},"content_sha256":"db28cd38c56c8aa9aed9a97e8b50d94fab7ec7d0a83b4303aa06717d02c56c00","schema_version":"1.0","event_id":"sha256:db28cd38c56c8aa9aed9a97e8b50d94fab7ec7d0a83b4303aa06717d02c56c00"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:6WJGAES23Q3ML4WWGKFYZCCQMZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Application of pattern spectra and convolutional neural networks to the analysis of simulated Cherenkov Telescope Array data","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"J. Aschersleben, M. H. F. Wilkinson (for the CTA Consortium), M. Vecchi, R. F. Peletier","submitted_at":"2021-08-02T12:45:12Z","abstract_excerpt":"The Cherenkov Telescope Array (CTA) will be the next generation gamma-ray observatory and will be the major global instrument for very-high-energy astronomy over the next decade, offering 5 - 10 x better flux sensitivity than current generation gamma-ray telescopes. Each telescope will provide a snapshot of gamma-ray induced particle showers by capturing the induced Cherenkov emission at ground level. The simulation of such events provides images that can be used as training data for convolutional neural networks (CNNs) to determine the energy of the initial gamma rays. Compared to other state"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.00834","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/2108.00834/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":"2026-07-05T03:02:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BDMChrzg0ri4fe+ZH6qP5qbhgconyRmy/lF/Rh2iEqvHAOouVBJ50bDLyZMtehKeWY90W/YqVxl7GNEUbT8tAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T21:52:56.969126Z"},"content_sha256":"2b475a75191c6e7bbcef4e6a5c148c5a2313412a0203842c9883ee774d7a8097","schema_version":"1.0","event_id":"sha256:2b475a75191c6e7bbcef4e6a5c148c5a2313412a0203842c9883ee774d7a8097"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6WJGAES23Q3ML4WWGKFYZCCQMZ/bundle.json","state_url":"https://pith.science/pith/6WJGAES23Q3ML4WWGKFYZCCQMZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6WJGAES23Q3ML4WWGKFYZCCQMZ/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":"2026-08-06T21:52:56Z","links":{"resolver":"https://pith.science/pith/6WJGAES23Q3ML4WWGKFYZCCQMZ","bundle":"https://pith.science/pith/6WJGAES23Q3ML4WWGKFYZCCQMZ/bundle.json","state":"https://pith.science/pith/6WJGAES23Q3ML4WWGKFYZCCQMZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6WJGAES23Q3ML4WWGKFYZCCQMZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:6WJGAES23Q3ML4WWGKFYZCCQMZ","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":"9edff5dce8b48a39cba04e46079980e3410a8e7b2156c00e1f68c6c5cfd45cd8","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-08-02T12:45:12Z","title_canon_sha256":"36e3ac1de8016c6b08cc346fc54f42cc53ef82ca94a8f5d36665d31627d4e49a"},"schema_version":"1.0","source":{"id":"2108.00834","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.00834","created_at":"2026-07-05T03:02:27Z"},{"alias_kind":"arxiv_version","alias_value":"2108.00834v1","created_at":"2026-07-05T03:02:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.00834","created_at":"2026-07-05T03:02:27Z"},{"alias_kind":"pith_short_12","alias_value":"6WJGAES23Q3M","created_at":"2026-07-05T03:02:27Z"},{"alias_kind":"pith_short_16","alias_value":"6WJGAES23Q3ML4WW","created_at":"2026-07-05T03:02:27Z"},{"alias_kind":"pith_short_8","alias_value":"6WJGAES2","created_at":"2026-07-05T03:02:27Z"}],"graph_snapshots":[{"event_id":"sha256:2b475a75191c6e7bbcef4e6a5c148c5a2313412a0203842c9883ee774d7a8097","target":"graph","created_at":"2026-07-05T03:02:27Z","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/2108.00834/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Cherenkov Telescope Array (CTA) will be the next generation gamma-ray observatory and will be the major global instrument for very-high-energy astronomy over the next decade, offering 5 - 10 x better flux sensitivity than current generation gamma-ray telescopes. Each telescope will provide a snapshot of gamma-ray induced particle showers by capturing the induced Cherenkov emission at ground level. The simulation of such events provides images that can be used as training data for convolutional neural networks (CNNs) to determine the energy of the initial gamma rays. Compared to other state","authors_text":"J. Aschersleben, M. H. F. Wilkinson (for the CTA Consortium), M. Vecchi, R. F. Peletier","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-08-02T12:45:12Z","title":"Application of pattern spectra and convolutional neural networks to the analysis of simulated Cherenkov Telescope Array data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.00834","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:db28cd38c56c8aa9aed9a97e8b50d94fab7ec7d0a83b4303aa06717d02c56c00","target":"record","created_at":"2026-07-05T03:02:27Z","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":"9edff5dce8b48a39cba04e46079980e3410a8e7b2156c00e1f68c6c5cfd45cd8","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-08-02T12:45:12Z","title_canon_sha256":"36e3ac1de8016c6b08cc346fc54f42cc53ef82ca94a8f5d36665d31627d4e49a"},"schema_version":"1.0","source":{"id":"2108.00834","kind":"arxiv","version":1}},"canonical_sha256":"f59260125adc36c5f2d6328b8c885066727889a0a697df4f00d585f51ad464d5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f59260125adc36c5f2d6328b8c885066727889a0a697df4f00d585f51ad464d5","first_computed_at":"2026-07-05T03:02:27.374266Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:02:27.374266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gdyez3qeY/9ZxvI3V14QFQnaNuiyWoPngd52tZsNM7aIBi0fuaX1hxCQLoibwHfaqW0qeB2Tp2cBt109WgT/AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:02:27.374745Z","signed_message":"canonical_sha256_bytes"},"source_id":"2108.00834","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:db28cd38c56c8aa9aed9a97e8b50d94fab7ec7d0a83b4303aa06717d02c56c00","sha256:2b475a75191c6e7bbcef4e6a5c148c5a2313412a0203842c9883ee774d7a8097"],"state_sha256":"097512cbf44140ada1b0b78b9ab06a27f1c2bf2c6a94894c52aef26bca8cb2c5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b3FAOL0eIYDVgUGHH2dvlsY3OAr/F8ZZl2z1HLjgKbW8rxC5NaOQ7S8k6j8nij+W7C/vPwFaLX99uQBv8MeeDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T21:52:56.975081Z","bundle_sha256":"3cb152d3d04e6b10ba53570471d730b1192f8ea9b5e1854d8436fcfb41c756d9"}}