{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:VBUDTULA4A7AGYYNZGNJBH533K","short_pith_number":"pith:VBUDTULA","schema_version":"1.0","canonical_sha256":"a86839d160e03e03630dc99a909fbbda929e6343d619c50d3165ccb888714da2","source":{"kind":"arxiv","id":"1207.2859","version":1},"attestation_state":"computed","paper":{"title":"Towards a model of population of astrophysical sources of ultra-high-energy cosmic rays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"K. V. Ptitsyna, O. E. Kalashev, S. V. Troitsky","submitted_at":"2012-07-12T06:46:36Z","abstract_excerpt":"We construct and discuss a toy model of the population of numerous non-identical extragalactic sources of ultra-high-energy cosmic rays. In the model, cosmic-ray particles are accelerated in magnetospheres of supermassive black holes in galactic nuclei, the key parameter of acceleration being the black-hole mass. We use astrophysical data on the redshift-dependent black-hole mass function to describe the population of these cosmic-ray accelerators, from weak to powerful, and confront the model with cosmic-ray data."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1207.2859","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-07-12T06:46:36Z","cross_cats_sorted":[],"title_canon_sha256":"f89ac10891d395e96d21ae58ce608dda2bb06ce1f8b01787cb01853a422b225a","abstract_canon_sha256":"2eac17e0f457c1340c2bf5b00fdb66d9d4b57bacb651588ae01cd03b141e3d1f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:45:55.046243Z","signature_b64":"Q/l97572CGEUHyqd0QFC2FDHyPxfD+/4mzx70nySoSey4WrNcweUj6CF8WIlJ7JjHSJy/Sb52mCmyuFOva15Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a86839d160e03e03630dc99a909fbbda929e6343d619c50d3165ccb888714da2","last_reissued_at":"2026-05-18T03:45:55.045636Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:45:55.045636Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Towards a model of population of astrophysical sources of ultra-high-energy cosmic rays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"K. V. Ptitsyna, O. E. Kalashev, S. V. Troitsky","submitted_at":"2012-07-12T06:46:36Z","abstract_excerpt":"We construct and discuss a toy model of the population of numerous non-identical extragalactic sources of ultra-high-energy cosmic rays. In the model, cosmic-ray particles are accelerated in magnetospheres of supermassive black holes in galactic nuclei, the key parameter of acceleration being the black-hole mass. We use astrophysical data on the redshift-dependent black-hole mass function to describe the population of these cosmic-ray accelerators, from weak to powerful, and confront the model with cosmic-ray data."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.2859","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1207.2859","created_at":"2026-05-18T03:45:55.045726+00:00"},{"alias_kind":"arxiv_version","alias_value":"1207.2859v1","created_at":"2026-05-18T03:45:55.045726+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.2859","created_at":"2026-05-18T03:45:55.045726+00:00"},{"alias_kind":"pith_short_12","alias_value":"VBUDTULA4A7A","created_at":"2026-05-18T12:27:25.539911+00:00"},{"alias_kind":"pith_short_16","alias_value":"VBUDTULA4A7AGYYN","created_at":"2026-05-18T12:27:25.539911+00:00"},{"alias_kind":"pith_short_8","alias_value":"VBUDTULA","created_at":"2026-05-18T12:27:25.539911+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VBUDTULA4A7AGYYNZGNJBH533K","json":"https://pith.science/pith/VBUDTULA4A7AGYYNZGNJBH533K.json","graph_json":"https://pith.science/api/pith-number/VBUDTULA4A7AGYYNZGNJBH533K/graph.json","events_json":"https://pith.science/api/pith-number/VBUDTULA4A7AGYYNZGNJBH533K/events.json","paper":"https://pith.science/paper/VBUDTULA"},"agent_actions":{"view_html":"https://pith.science/pith/VBUDTULA4A7AGYYNZGNJBH533K","download_json":"https://pith.science/pith/VBUDTULA4A7AGYYNZGNJBH533K.json","view_paper":"https://pith.science/paper/VBUDTULA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1207.2859&json=true","fetch_graph":"https://pith.science/api/pith-number/VBUDTULA4A7AGYYNZGNJBH533K/graph.json","fetch_events":"https://pith.science/api/pith-number/VBUDTULA4A7AGYYNZGNJBH533K/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VBUDTULA4A7AGYYNZGNJBH533K/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VBUDTULA4A7AGYYNZGNJBH533K/action/storage_attestation","attest_author":"https://pith.science/pith/VBUDTULA4A7AGYYNZGNJBH533K/action/author_attestation","sign_citation":"https://pith.science/pith/VBUDTULA4A7AGYYNZGNJBH533K/action/citation_signature","submit_replication":"https://pith.science/pith/VBUDTULA4A7AGYYNZGNJBH533K/action/replication_record"}},"created_at":"2026-05-18T03:45:55.045726+00:00","updated_at":"2026-05-18T03:45:55.045726+00:00"}