{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:5RYUORHOWYSL7J2KHXUQG6JXWQ","short_pith_number":"pith:5RYUORHO","canonical_record":{"source":{"id":"0910.4298","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-22T11:49:16Z","cross_cats_sorted":[],"title_canon_sha256":"84f0c6e7a520d4c3385c836424ecbe57c05d7b8145e4922139bbc4e212d6af48","abstract_canon_sha256":"cc2541861504a1eba006c29ac774a0f05516fa132e33680cb87f1832de2405b3"},"schema_version":"1.0"},"canonical_sha256":"ec714744eeb624bfa74a3de9037937b43c6d407ec63ea7f34aaf07d3b95554f3","source":{"kind":"arxiv","id":"0910.4298","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.4298","created_at":"2026-05-18T02:11:12Z"},{"alias_kind":"arxiv_version","alias_value":"0910.4298v1","created_at":"2026-05-18T02:11:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.4298","created_at":"2026-05-18T02:11:12Z"},{"alias_kind":"pith_short_12","alias_value":"5RYUORHOWYSL","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"5RYUORHOWYSL7J2K","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"5RYUORHO","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:5RYUORHOWYSL7J2KHXUQG6JXWQ","target":"record","payload":{"canonical_record":{"source":{"id":"0910.4298","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-22T11:49:16Z","cross_cats_sorted":[],"title_canon_sha256":"84f0c6e7a520d4c3385c836424ecbe57c05d7b8145e4922139bbc4e212d6af48","abstract_canon_sha256":"cc2541861504a1eba006c29ac774a0f05516fa132e33680cb87f1832de2405b3"},"schema_version":"1.0"},"canonical_sha256":"ec714744eeb624bfa74a3de9037937b43c6d407ec63ea7f34aaf07d3b95554f3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:12.663237Z","signature_b64":"/Ui57YdNdMa5CXtnqqBRAmTXwqNXaxask8QUZ21onp6CrLn9lJ701mgQDsqeEVpy1rkAsxYXUjDeuKKaiKL2CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ec714744eeb624bfa74a3de9037937b43c6d407ec63ea7f34aaf07d3b95554f3","last_reissued_at":"2026-05-18T02:11:12.662401Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:12.662401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.4298","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":"2026-05-18T02:11:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I3UUHMfM0fbVE8zdPJHvOSu/xiwBuIYUh/QQZReJA3A9lsui9FLILX7QKSbZUeWbEAHp/XuTMLpjcwg5hB8XBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:38:26.894015Z"},"content_sha256":"3aa6e728d4704afb26c27a5bd76967bd58a711b345071d0ef496739353293b54","schema_version":"1.0","event_id":"sha256:3aa6e728d4704afb26c27a5bd76967bd58a711b345071d0ef496739353293b54"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:5RYUORHOWYSL7J2KHXUQG6JXWQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the angular distribution of extensive air showers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"G.V. Kulikov, M.Yu. Zotov, N.N. Kalmykov, V.P. Sulakov","submitted_at":"2009-10-22T11:49:16Z","abstract_excerpt":"Angular distributions of extensive air showers with different number of charged particles in the range 2.5x10^5--4x10^7 are derived using the experimental data obtained with the EAS MSU array. Possible approximations of the obtained distributions with different empiric functions available in literature, are analysed. It is shown that the exponential function provides the best approximation of the angular distributions in the sense of the chi-squared criterion."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.4298","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":"2026-05-18T02:11:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9PWPQLdKNCpWwU4YLihdZpSdqKRm4b9iJYXx11hIPgXxYc5t/SqxmOv/faoI8sx3KzV0XiZtijiY17rcoOs1Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:38:26.894436Z"},"content_sha256":"13364c01c318042a03b4b489e37df13dec9acefbca394a5ae0d179aa62738d30","schema_version":"1.0","event_id":"sha256:13364c01c318042a03b4b489e37df13dec9acefbca394a5ae0d179aa62738d30"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5RYUORHOWYSL7J2KHXUQG6JXWQ/bundle.json","state_url":"https://pith.science/pith/5RYUORHOWYSL7J2KHXUQG6JXWQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5RYUORHOWYSL7J2KHXUQG6JXWQ/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":"2026-06-02T21:38:26Z","links":{"resolver":"https://pith.science/pith/5RYUORHOWYSL7J2KHXUQG6JXWQ","bundle":"https://pith.science/pith/5RYUORHOWYSL7J2KHXUQG6JXWQ/bundle.json","state":"https://pith.science/pith/5RYUORHOWYSL7J2KHXUQG6JXWQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5RYUORHOWYSL7J2KHXUQG6JXWQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:5RYUORHOWYSL7J2KHXUQG6JXWQ","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":"cc2541861504a1eba006c29ac774a0f05516fa132e33680cb87f1832de2405b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-22T11:49:16Z","title_canon_sha256":"84f0c6e7a520d4c3385c836424ecbe57c05d7b8145e4922139bbc4e212d6af48"},"schema_version":"1.0","source":{"id":"0910.4298","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.4298","created_at":"2026-05-18T02:11:12Z"},{"alias_kind":"arxiv_version","alias_value":"0910.4298v1","created_at":"2026-05-18T02:11:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.4298","created_at":"2026-05-18T02:11:12Z"},{"alias_kind":"pith_short_12","alias_value":"5RYUORHOWYSL","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"5RYUORHOWYSL7J2K","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"5RYUORHO","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:13364c01c318042a03b4b489e37df13dec9acefbca394a5ae0d179aa62738d30","target":"graph","created_at":"2026-05-18T02:11:12Z","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":"Angular distributions of extensive air showers with different number of charged particles in the range 2.5x10^5--4x10^7 are derived using the experimental data obtained with the EAS MSU array. Possible approximations of the obtained distributions with different empiric functions available in literature, are analysed. It is shown that the exponential function provides the best approximation of the angular distributions in the sense of the chi-squared criterion.","authors_text":"G.V. Kulikov, M.Yu. Zotov, N.N. Kalmykov, V.P. Sulakov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-22T11:49:16Z","title":"On the angular distribution of extensive air showers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.4298","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":"sha256:3aa6e728d4704afb26c27a5bd76967bd58a711b345071d0ef496739353293b54","target":"record","created_at":"2026-05-18T02:11:12Z","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":"cc2541861504a1eba006c29ac774a0f05516fa132e33680cb87f1832de2405b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-22T11:49:16Z","title_canon_sha256":"84f0c6e7a520d4c3385c836424ecbe57c05d7b8145e4922139bbc4e212d6af48"},"schema_version":"1.0","source":{"id":"0910.4298","kind":"arxiv","version":1}},"canonical_sha256":"ec714744eeb624bfa74a3de9037937b43c6d407ec63ea7f34aaf07d3b95554f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ec714744eeb624bfa74a3de9037937b43c6d407ec63ea7f34aaf07d3b95554f3","first_computed_at":"2026-05-18T02:11:12.662401Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:11:12.662401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/Ui57YdNdMa5CXtnqqBRAmTXwqNXaxask8QUZ21onp6CrLn9lJ701mgQDsqeEVpy1rkAsxYXUjDeuKKaiKL2CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:11:12.663237Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.4298","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3aa6e728d4704afb26c27a5bd76967bd58a711b345071d0ef496739353293b54","sha256:13364c01c318042a03b4b489e37df13dec9acefbca394a5ae0d179aa62738d30"],"state_sha256":"41f6df1b3a6f8a0b21b6983005ad42a8a678a36ae7a2b49c8a2766bd4b8bad4e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7wmMrjk5bRKb6NXHRW52z5JEu1x87bCqsDtmVcXVwb0Od9r4S5ar2jL4tcrnp4Uxv8Jsjw3Du1y1DSyQ5/MRAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T21:38:26.896446Z","bundle_sha256":"d7e1a4682e12a89d48786e54a69d8b68d75d7fe9bfadf33d02a6be90534bc231"}}