{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:IEUI2S7TF3ENGRR44RFTPQVYBI","short_pith_number":"pith:IEUI2S7T","canonical_record":{"source":{"id":"astro-ph/0312468","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-18T01:50:36Z","cross_cats_sorted":[],"title_canon_sha256":"96dccd35b4f191de4abe5408182d58500813bb209810416cfc3ba775932e3381","abstract_canon_sha256":"ca1ff64a0a3e5583d252bd07d2ea5743663a1107e254e7a954d1f4b8cbb59404"},"schema_version":"1.0"},"canonical_sha256":"41288d4bf32ec8d3463ce44b37c2b80a2b79fcf4a9cda63b47239d458fd0130d","source":{"kind":"arxiv","id":"astro-ph/0312468","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0312468","created_at":"2026-05-18T01:21:09Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0312468v1","created_at":"2026-05-18T01:21:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0312468","created_at":"2026-05-18T01:21:09Z"},{"alias_kind":"pith_short_12","alias_value":"IEUI2S7TF3EN","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"IEUI2S7TF3ENGRR4","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"IEUI2S7T","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:IEUI2S7TF3ENGRR44RFTPQVYBI","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0312468","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-18T01:50:36Z","cross_cats_sorted":[],"title_canon_sha256":"96dccd35b4f191de4abe5408182d58500813bb209810416cfc3ba775932e3381","abstract_canon_sha256":"ca1ff64a0a3e5583d252bd07d2ea5743663a1107e254e7a954d1f4b8cbb59404"},"schema_version":"1.0"},"canonical_sha256":"41288d4bf32ec8d3463ce44b37c2b80a2b79fcf4a9cda63b47239d458fd0130d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:09.018340Z","signature_b64":"6ic0MJ6IKXk8N0QdhyJSTlc7Pei3/I6ej+lzK44ISerSU/iogIf5C+NLkb8CiGJKiP1EfC7dO+IQyZ3mbOJzBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"41288d4bf32ec8d3463ce44b37c2b80a2b79fcf4a9cda63b47239d458fd0130d","last_reissued_at":"2026-05-18T01:21:09.017561Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:09.017561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0312468","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":"2026-05-18T01:21:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k07gg67Q92R/c31Oumsx/MntW5gE5fpeypD7ZmOlL9f64yqpMF5qXBH43frqCmy7Yyfmy/eMZ8DISHbklK0NBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T04:09:36.650120Z"},"content_sha256":"d6d84c08cc32e76eaf9a669ddf69abde1158630301da00e1c2d4d15ab53b760d","schema_version":"1.0","event_id":"sha256:d6d84c08cc32e76eaf9a669ddf69abde1158630301da00e1c2d4d15ab53b760d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:IEUI2S7TF3ENGRR44RFTPQVYBI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Composition of Cosmic Rays with the Energy more than 4x10^{19} eV","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.A. Mikhailov","submitted_at":"2003-12-18T01:50:36Z","abstract_excerpt":"Arrival directions of extensive air showers by using world data are considered. It is found that the shower distribution in zenith angle at the energies E>10^{19} eV and E>4x10^{19} eV differs from each other. By our estimations, the shower with E>10^{20} eV at the Sugar array was not registered. The mass composition of very high-energy cosmic rays has been estimated. It is shown that E>4x10^{19} eV cosmic rays are, most likely, super heavy nuclei with charge Z>26."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0312468","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":"2026-05-18T01:21:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VbcW4JvPVMEg4mUUEuOLR+Px2nCP7OQyQkjlt3b9XUejoFKBTu5C9cbHXXWJ8PcGpAoeb04A6dZlD6BwXQN4Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T04:09:36.650835Z"},"content_sha256":"da308cda0ae2c6e450aef3ecae772aca47775ffa7b355f1827995cf79c2f742f","schema_version":"1.0","event_id":"sha256:da308cda0ae2c6e450aef3ecae772aca47775ffa7b355f1827995cf79c2f742f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IEUI2S7TF3ENGRR44RFTPQVYBI/bundle.json","state_url":"https://pith.science/pith/IEUI2S7TF3ENGRR44RFTPQVYBI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IEUI2S7TF3ENGRR44RFTPQVYBI/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":"2026-06-09T04:09:36Z","links":{"resolver":"https://pith.science/pith/IEUI2S7TF3ENGRR44RFTPQVYBI","bundle":"https://pith.science/pith/IEUI2S7TF3ENGRR44RFTPQVYBI/bundle.json","state":"https://pith.science/pith/IEUI2S7TF3ENGRR44RFTPQVYBI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IEUI2S7TF3ENGRR44RFTPQVYBI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:IEUI2S7TF3ENGRR44RFTPQVYBI","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":"ca1ff64a0a3e5583d252bd07d2ea5743663a1107e254e7a954d1f4b8cbb59404","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-18T01:50:36Z","title_canon_sha256":"96dccd35b4f191de4abe5408182d58500813bb209810416cfc3ba775932e3381"},"schema_version":"1.0","source":{"id":"astro-ph/0312468","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0312468","created_at":"2026-05-18T01:21:09Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0312468v1","created_at":"2026-05-18T01:21:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0312468","created_at":"2026-05-18T01:21:09Z"},{"alias_kind":"pith_short_12","alias_value":"IEUI2S7TF3EN","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"IEUI2S7TF3ENGRR4","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"IEUI2S7T","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:da308cda0ae2c6e450aef3ecae772aca47775ffa7b355f1827995cf79c2f742f","target":"graph","created_at":"2026-05-18T01:21:09Z","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":"Arrival directions of extensive air showers by using world data are considered. It is found that the shower distribution in zenith angle at the energies E>10^{19} eV and E>4x10^{19} eV differs from each other. By our estimations, the shower with E>10^{20} eV at the Sugar array was not registered. The mass composition of very high-energy cosmic rays has been estimated. It is shown that E>4x10^{19} eV cosmic rays are, most likely, super heavy nuclei with charge Z>26.","authors_text":"A.A. Mikhailov","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2003-12-18T01:50:36Z","title":"Composition of Cosmic Rays with the Energy more than 4x10^{19} eV"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0312468","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:d6d84c08cc32e76eaf9a669ddf69abde1158630301da00e1c2d4d15ab53b760d","target":"record","created_at":"2026-05-18T01:21:09Z","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":"ca1ff64a0a3e5583d252bd07d2ea5743663a1107e254e7a954d1f4b8cbb59404","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-18T01:50:36Z","title_canon_sha256":"96dccd35b4f191de4abe5408182d58500813bb209810416cfc3ba775932e3381"},"schema_version":"1.0","source":{"id":"astro-ph/0312468","kind":"arxiv","version":1}},"canonical_sha256":"41288d4bf32ec8d3463ce44b37c2b80a2b79fcf4a9cda63b47239d458fd0130d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41288d4bf32ec8d3463ce44b37c2b80a2b79fcf4a9cda63b47239d458fd0130d","first_computed_at":"2026-05-18T01:21:09.017561Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:09.017561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6ic0MJ6IKXk8N0QdhyJSTlc7Pei3/I6ej+lzK44ISerSU/iogIf5C+NLkb8CiGJKiP1EfC7dO+IQyZ3mbOJzBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:09.018340Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0312468","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d6d84c08cc32e76eaf9a669ddf69abde1158630301da00e1c2d4d15ab53b760d","sha256:da308cda0ae2c6e450aef3ecae772aca47775ffa7b355f1827995cf79c2f742f"],"state_sha256":"39430a7e7cfc43dedceedcd05a311620c9d15d2c31abaf25b900c91f3c7a2894"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C2zz+OhRK8MAozkDwW80TXgE9om1Xne6KeZlAkn+kqxRRreDjZTHTAFdjkMsA4V7fZ1g+g013VnAtJUDLWUdBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T04:09:36.654765Z","bundle_sha256":"8ae12d37e5c51301a2d83488b2103d872244fccace145f4117d68abbe3f4b92b"}}