{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:2YM2D4IVTHAURWIGWJOZKCNIH5","short_pith_number":"pith:2YM2D4IV","canonical_record":{"source":{"id":"1010.6162","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-10-29T09:30:25Z","cross_cats_sorted":[],"title_canon_sha256":"2a33a1b1d600123946c1ff6baffd2d3cd1ebe90459cdba54dfa36edd1e78964b","abstract_canon_sha256":"40409a6c467fabdc08b3e30fa92eb16d00fa8871fd38118c83022b10eef6ce46"},"schema_version":"1.0"},"canonical_sha256":"d619a1f11599c148d906b25d9509a83f5e7d025b3261c1dacf0f84f78d260434","source":{"kind":"arxiv","id":"1010.6162","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.6162","created_at":"2026-05-18T03:48:01Z"},{"alias_kind":"arxiv_version","alias_value":"1010.6162v1","created_at":"2026-05-18T03:48:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.6162","created_at":"2026-05-18T03:48:01Z"},{"alias_kind":"pith_short_12","alias_value":"2YM2D4IVTHAU","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"2YM2D4IVTHAURWIG","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"2YM2D4IV","created_at":"2026-05-18T12:26:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:2YM2D4IVTHAURWIGWJOZKCNIH5","target":"record","payload":{"canonical_record":{"source":{"id":"1010.6162","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-10-29T09:30:25Z","cross_cats_sorted":[],"title_canon_sha256":"2a33a1b1d600123946c1ff6baffd2d3cd1ebe90459cdba54dfa36edd1e78964b","abstract_canon_sha256":"40409a6c467fabdc08b3e30fa92eb16d00fa8871fd38118c83022b10eef6ce46"},"schema_version":"1.0"},"canonical_sha256":"d619a1f11599c148d906b25d9509a83f5e7d025b3261c1dacf0f84f78d260434","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:48:01.093215Z","signature_b64":"OLE+ut23yRuOmtVMP0vTmzhSlMYQkc9gtYhsxTwPV0uWziQB+fst9WyIwoVVLhBmp1XhYKT8n8+LaTQNxwkeCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d619a1f11599c148d906b25d9509a83f5e7d025b3261c1dacf0f84f78d260434","last_reissued_at":"2026-05-18T03:48:01.092696Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:48:01.092696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1010.6162","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":"2026-05-18T03:48:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W1mzBQs0UurAh2uL9pgGln/dr8ToBX/RgKfLCm28q+37fKENpTLZ1BjoC1S1I6vaS8cpB3O6xSLXqh2RvjOtBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T21:29:45.538204Z"},"content_sha256":"0c454366db66e9bbb7ee5e4e1d81fd1fd6c628614d46ff06b4261a45c543a826","schema_version":"1.0","event_id":"sha256:0c454366db66e9bbb7ee5e4e1d81fd1fd6c628614d46ff06b4261a45c543a826"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:2YM2D4IVTHAURWIGWJOZKCNIH5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The exposure of the hybrid detector of the Pierre Auger Observatory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"The Pierre Auger Collaboration","submitted_at":"2010-10-29T09:30:25Z","abstract_excerpt":"The Pierre Auger Observatory is a detector for ultra-high energy cosmic rays. It consists of a surface array to measure secondary particles at ground level and a fluorescence detector to measure the development of air showers in the atmosphere above the array. The \"hybrid\" detection mode combines the information from the two subsystems. We describe the determination of the hybrid exposure for events observed by the fluorescence telescopes in coincidence with at least one water-Cherenkov detector of the surface array. A detailed knowledge of the time dependence of the detection operations is cr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.6162","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":""},"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":"2026-05-18T03:48:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CJuEQBX2QCPDkFId6yje1iXPrM+gYpRKxh2ajn3qqxILzFj4gTSQbHrAGZcwdYhAsmozU4HbVyOpsiy6UOLlCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T21:29:45.538748Z"},"content_sha256":"01597a453cc20b874cb34655eb4148fff1396d35f0b68f286ead43578281f6cd","schema_version":"1.0","event_id":"sha256:01597a453cc20b874cb34655eb4148fff1396d35f0b68f286ead43578281f6cd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2YM2D4IVTHAURWIGWJOZKCNIH5/bundle.json","state_url":"https://pith.science/pith/2YM2D4IVTHAURWIGWJOZKCNIH5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2YM2D4IVTHAURWIGWJOZKCNIH5/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":"2026-08-07T21:29:45Z","links":{"resolver":"https://pith.science/pith/2YM2D4IVTHAURWIGWJOZKCNIH5","bundle":"https://pith.science/pith/2YM2D4IVTHAURWIGWJOZKCNIH5/bundle.json","state":"https://pith.science/pith/2YM2D4IVTHAURWIGWJOZKCNIH5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2YM2D4IVTHAURWIGWJOZKCNIH5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:2YM2D4IVTHAURWIGWJOZKCNIH5","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":"40409a6c467fabdc08b3e30fa92eb16d00fa8871fd38118c83022b10eef6ce46","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-10-29T09:30:25Z","title_canon_sha256":"2a33a1b1d600123946c1ff6baffd2d3cd1ebe90459cdba54dfa36edd1e78964b"},"schema_version":"1.0","source":{"id":"1010.6162","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.6162","created_at":"2026-05-18T03:48:01Z"},{"alias_kind":"arxiv_version","alias_value":"1010.6162v1","created_at":"2026-05-18T03:48:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.6162","created_at":"2026-05-18T03:48:01Z"},{"alias_kind":"pith_short_12","alias_value":"2YM2D4IVTHAU","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"2YM2D4IVTHAURWIG","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"2YM2D4IV","created_at":"2026-05-18T12:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:01597a453cc20b874cb34655eb4148fff1396d35f0b68f286ead43578281f6cd","target":"graph","created_at":"2026-05-18T03:48:01Z","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 Pierre Auger Observatory is a detector for ultra-high energy cosmic rays. It consists of a surface array to measure secondary particles at ground level and a fluorescence detector to measure the development of air showers in the atmosphere above the array. The \"hybrid\" detection mode combines the information from the two subsystems. We describe the determination of the hybrid exposure for events observed by the fluorescence telescopes in coincidence with at least one water-Cherenkov detector of the surface array. A detailed knowledge of the time dependence of the detection operations is cr","authors_text":"The Pierre Auger Collaboration","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-10-29T09:30:25Z","title":"The exposure of the hybrid detector of the Pierre Auger Observatory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.6162","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":"sha256:0c454366db66e9bbb7ee5e4e1d81fd1fd6c628614d46ff06b4261a45c543a826","target":"record","created_at":"2026-05-18T03:48:01Z","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":"40409a6c467fabdc08b3e30fa92eb16d00fa8871fd38118c83022b10eef6ce46","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-10-29T09:30:25Z","title_canon_sha256":"2a33a1b1d600123946c1ff6baffd2d3cd1ebe90459cdba54dfa36edd1e78964b"},"schema_version":"1.0","source":{"id":"1010.6162","kind":"arxiv","version":1}},"canonical_sha256":"d619a1f11599c148d906b25d9509a83f5e7d025b3261c1dacf0f84f78d260434","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d619a1f11599c148d906b25d9509a83f5e7d025b3261c1dacf0f84f78d260434","first_computed_at":"2026-05-18T03:48:01.092696Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:48:01.092696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OLE+ut23yRuOmtVMP0vTmzhSlMYQkc9gtYhsxTwPV0uWziQB+fst9WyIwoVVLhBmp1XhYKT8n8+LaTQNxwkeCw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:48:01.093215Z","signed_message":"canonical_sha256_bytes"},"source_id":"1010.6162","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c454366db66e9bbb7ee5e4e1d81fd1fd6c628614d46ff06b4261a45c543a826","sha256:01597a453cc20b874cb34655eb4148fff1396d35f0b68f286ead43578281f6cd"],"state_sha256":"eca2a9cba7ee7f192dc3a63df7f46f40f485502e1d7bee3ed3b0011723f6d59b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0iUIUVhSTztCpTyivDbbTxhbg1RZe375YLjudIDWxl8q0TITcBH4nqZWCU34lJocV/C+Ga5RKuug+sctvWdWAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T21:29:45.543398Z","bundle_sha256":"2b4628d674d4325dddfd6f0bc954d0cbf07bcedb0c9eafd4821337e6b797b644"}}