{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:4ZV7MJ3D2PL4LQPZZFY26YRSDW","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":"30f9a8ffddd87354b5d21db8c53292f0af5ec58b54017bd18dffc6f0bc704fed","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-08-05T13:51:22Z","title_canon_sha256":"9dbe28d14ac7a62c8c52aeae9090c7de8beafd22da17e9f8d3caa156d483298d"},"schema_version":"1.0","source":{"id":"1908.01622","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.01622","created_at":"2026-07-05T00:43:35Z"},{"alias_kind":"arxiv_version","alias_value":"1908.01622v2","created_at":"2026-07-05T00:43:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.01622","created_at":"2026-07-05T00:43:35Z"},{"alias_kind":"pith_short_12","alias_value":"4ZV7MJ3D2PL4","created_at":"2026-07-05T00:43:35Z"},{"alias_kind":"pith_short_16","alias_value":"4ZV7MJ3D2PL4LQPZ","created_at":"2026-07-05T00:43:35Z"},{"alias_kind":"pith_short_8","alias_value":"4ZV7MJ3D","created_at":"2026-07-05T00:43:35Z"}],"graph_snapshots":[{"event_id":"sha256:a7b930feb51cab24f553afd2f1ca36de06f24b4d8907809efea1d78790552889","target":"graph","created_at":"2026-07-05T00:43:35Z","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/1908.01622/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The High School Project on Astrophysics Research with Cosmics (HiSPARC) is a large extensive air shower (EAS) array with detection stations throughout the Netherlands, United Kingdom, Denmark and Namibia. HiSPARC is a collaboration of universities, scientific institutes and high schools. The majority of detection stations is hosted by high schools. A HiSPARC station consists of two or four scintillators placed inside roof boxes on top of a building. The measured response of a detector to single incoming muons agrees well with GEANT4 simulations. The response of a station to EASs agrees with si","authors_text":"A.P.L.S. de Laat, B. van Eijk, D.B.R.A. Fokkema, J.C. Verkooijen, J.J.M. Steijger, J.W. van Holten, K. van Dam, N.G. Schultheiss","cross_cats":["astro-ph.HE"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-08-05T13:51:22Z","title":"The HiSPARC Experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.01622","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":"sha256:7ba58c5c62194eaa072a0e829f3c41fcb98a745602e2952bbdefb40178121d9e","target":"record","created_at":"2026-07-05T00:43:35Z","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":"30f9a8ffddd87354b5d21db8c53292f0af5ec58b54017bd18dffc6f0bc704fed","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-08-05T13:51:22Z","title_canon_sha256":"9dbe28d14ac7a62c8c52aeae9090c7de8beafd22da17e9f8d3caa156d483298d"},"schema_version":"1.0","source":{"id":"1908.01622","kind":"arxiv","version":2}},"canonical_sha256":"e66bf62763d3d7c5c1f9c971af62321d8d31ad2f153f268bda66d6dc117f9fa7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e66bf62763d3d7c5c1f9c971af62321d8d31ad2f153f268bda66d6dc117f9fa7","first_computed_at":"2026-07-05T00:43:35.605685Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:43:35.605685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nmQtRBJGLmTlOR8uM7Vi1qEd0otiap4uteMYoh4YqcGX3zftZap3jVkdgVteFbIHr9+WOQLBlzz27Pgo36B+Bg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:43:35.606117Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.01622","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7ba58c5c62194eaa072a0e829f3c41fcb98a745602e2952bbdefb40178121d9e","sha256:a7b930feb51cab24f553afd2f1ca36de06f24b4d8907809efea1d78790552889"],"state_sha256":"adbcdd71d19af5ca1f9d4e3434fc3158bba37335fe9d6ff584918d431aca1240"}