{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:VIXOJE3C7UUJDGDJMJ5RZTCIWJ","short_pith_number":"pith:VIXOJE3C","canonical_record":{"source":{"id":"1302.4482","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-02-18T23:32:41Z","cross_cats_sorted":[],"title_canon_sha256":"6349665d241198a2d757381d325fadda95a92dae3d66023b640e3d32ce9d2d15","abstract_canon_sha256":"86c7809dff29c9e6f9c1ad00557fdc246cc794fe4d111c9410cf799e7b528d01"},"schema_version":"1.0"},"canonical_sha256":"aa2ee49362fd28919869627b1ccc48b2409d084cfff350a1c30b030730445831","source":{"kind":"arxiv","id":"1302.4482","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.4482","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"arxiv_version","alias_value":"1302.4482v1","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.4482","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"pith_short_12","alias_value":"VIXOJE3C7UUJ","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"VIXOJE3C7UUJDGDJ","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"VIXOJE3C","created_at":"2026-05-18T12:28:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:VIXOJE3C7UUJDGDJMJ5RZTCIWJ","target":"record","payload":{"canonical_record":{"source":{"id":"1302.4482","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-02-18T23:32:41Z","cross_cats_sorted":[],"title_canon_sha256":"6349665d241198a2d757381d325fadda95a92dae3d66023b640e3d32ce9d2d15","abstract_canon_sha256":"86c7809dff29c9e6f9c1ad00557fdc246cc794fe4d111c9410cf799e7b528d01"},"schema_version":"1.0"},"canonical_sha256":"aa2ee49362fd28919869627b1ccc48b2409d084cfff350a1c30b030730445831","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:35.449439Z","signature_b64":"s/qgwB1D5fBlw9yRESAmjmmGNpCoGa+6PPCxrECFMz3AKCXJlSmkszJVHN7l3zKCNS1le7qj7flXcgkr8cCDAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aa2ee49362fd28919869627b1ccc48b2409d084cfff350a1c30b030730445831","last_reissued_at":"2026-05-18T01:51:35.449015Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:35.449015Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.4482","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":"2026-05-18T01:51:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hyuFkabPyEqhLKDYXMdAFwpy6KJ+7GSjojTGB8uVnFsiz2yYyAXP7vYpXhv2Gfi2d3mXjtMyDWeYXmYP7Q7yAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T01:26:31.287662Z"},"content_sha256":"e9379b868931b5a182854279569876e8a3c6b65f00798def1f8ef41e8544d231","schema_version":"1.0","event_id":"sha256:e9379b868931b5a182854279569876e8a3c6b65f00798def1f8ef41e8544d231"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:VIXOJE3C7UUJDGDJMJ5RZTCIWJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultrahigh Energy Cosmic Ray Nuclei from Extragalactic Pulsars and the effect of their Galactic counterparts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Angela V. Olinto, Ke Fang, Kumiko Kotera","submitted_at":"2013-02-18T23:32:41Z","abstract_excerpt":"The acceleration of ultrahigh energy nuclei in fast spinning newborn pulsars can explain the observed spectrum of ultrahigh energy cosmic rays and the trend towards heavier nuclei for energies above $10^{19}\\,$eV as reported by the Auger Observatory. Pulsar acceleration implies a hard injection spectrum ($\\sim E^{-1}$) due to pulsar spin down and a maximum energy $E_{\\rm max} \\sim Z \\, 10^{19}$ eV due to the limit on the spin rate of neutron stars. We have previously shown that the escape through the young supernova remnant softens the spectrum, decreases slightly the maximum energy, and gener"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.4482","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":"2026-05-18T01:51:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CxBkHoYelY4LKbG1+EaJS/d06l16l0af5jUS5wg/L+ONwERHFY1sJL+1A4r0cOrWntCDgUw6lSf0WWK4mXDzCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T01:26:31.288462Z"},"content_sha256":"15ed516885503ac42de11e16f137e7e611cfdd0695e3c360f1a668d91d5801dd","schema_version":"1.0","event_id":"sha256:15ed516885503ac42de11e16f137e7e611cfdd0695e3c360f1a668d91d5801dd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VIXOJE3C7UUJDGDJMJ5RZTCIWJ/bundle.json","state_url":"https://pith.science/pith/VIXOJE3C7UUJDGDJMJ5RZTCIWJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VIXOJE3C7UUJDGDJMJ5RZTCIWJ/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":"2026-05-26T01:26:31Z","links":{"resolver":"https://pith.science/pith/VIXOJE3C7UUJDGDJMJ5RZTCIWJ","bundle":"https://pith.science/pith/VIXOJE3C7UUJDGDJMJ5RZTCIWJ/bundle.json","state":"https://pith.science/pith/VIXOJE3C7UUJDGDJMJ5RZTCIWJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VIXOJE3C7UUJDGDJMJ5RZTCIWJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:VIXOJE3C7UUJDGDJMJ5RZTCIWJ","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":"86c7809dff29c9e6f9c1ad00557fdc246cc794fe4d111c9410cf799e7b528d01","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-02-18T23:32:41Z","title_canon_sha256":"6349665d241198a2d757381d325fadda95a92dae3d66023b640e3d32ce9d2d15"},"schema_version":"1.0","source":{"id":"1302.4482","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.4482","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"arxiv_version","alias_value":"1302.4482v1","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.4482","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"pith_short_12","alias_value":"VIXOJE3C7UUJ","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"VIXOJE3C7UUJDGDJ","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"VIXOJE3C","created_at":"2026-05-18T12:28:04Z"}],"graph_snapshots":[{"event_id":"sha256:15ed516885503ac42de11e16f137e7e611cfdd0695e3c360f1a668d91d5801dd","target":"graph","created_at":"2026-05-18T01:51:35Z","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"},"paper":{"abstract_excerpt":"The acceleration of ultrahigh energy nuclei in fast spinning newborn pulsars can explain the observed spectrum of ultrahigh energy cosmic rays and the trend towards heavier nuclei for energies above $10^{19}\\,$eV as reported by the Auger Observatory. Pulsar acceleration implies a hard injection spectrum ($\\sim E^{-1}$) due to pulsar spin down and a maximum energy $E_{\\rm max} \\sim Z \\, 10^{19}$ eV due to the limit on the spin rate of neutron stars. We have previously shown that the escape through the young supernova remnant softens the spectrum, decreases slightly the maximum energy, and gener","authors_text":"Angela V. Olinto, Ke Fang, Kumiko Kotera","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-02-18T23:32:41Z","title":"Ultrahigh Energy Cosmic Ray Nuclei from Extragalactic Pulsars and the effect of their Galactic counterparts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.4482","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:e9379b868931b5a182854279569876e8a3c6b65f00798def1f8ef41e8544d231","target":"record","created_at":"2026-05-18T01:51:35Z","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":"86c7809dff29c9e6f9c1ad00557fdc246cc794fe4d111c9410cf799e7b528d01","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-02-18T23:32:41Z","title_canon_sha256":"6349665d241198a2d757381d325fadda95a92dae3d66023b640e3d32ce9d2d15"},"schema_version":"1.0","source":{"id":"1302.4482","kind":"arxiv","version":1}},"canonical_sha256":"aa2ee49362fd28919869627b1ccc48b2409d084cfff350a1c30b030730445831","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aa2ee49362fd28919869627b1ccc48b2409d084cfff350a1c30b030730445831","first_computed_at":"2026-05-18T01:51:35.449015Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:35.449015Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s/qgwB1D5fBlw9yRESAmjmmGNpCoGa+6PPCxrECFMz3AKCXJlSmkszJVHN7l3zKCNS1le7qj7flXcgkr8cCDAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:35.449439Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.4482","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e9379b868931b5a182854279569876e8a3c6b65f00798def1f8ef41e8544d231","sha256:15ed516885503ac42de11e16f137e7e611cfdd0695e3c360f1a668d91d5801dd"],"state_sha256":"35a730a2481548ff3488768391aeb3785160a0d3866ef40cabf36df03b05e7bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1/E9sZ7P4yxKpbYCaOWRIU5byYgJfUlBHHv6Ksz7kZU7j+Eq90kN+ERDSiAlNInR+111qaSwHy/5NPwoFKTxAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T01:26:31.292037Z","bundle_sha256":"618259ca5fffd30199b2e9b753c125ced8322af230806aef17a100862bbb26fe"}}