{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2006:2YJSFI4AQTHTWKVWERXBE3HPCE","short_pith_number":"pith:2YJSFI4A","schema_version":"1.0","canonical_sha256":"d61322a38084cf3b2ab6246e126cef110e36c4cb2e233921d2f8a5b5f5ae52f6","source":{"kind":"arxiv","id":"astro-ph/0602261","version":1},"attestation_state":"computed","paper":{"title":"Stable matter of 4th generation: hidden in the Universe and close to detection?","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"K.Belotsky, K.Shibaev, M.Khlopov","submitted_at":"2006-02-11T23:49:51Z","abstract_excerpt":"Stable neutrino and U quark of 4th generation are excluded neither by experimental data, nor by astrophysical constraints. Moreover, excess of stable $\\bar U$ quarks in the Universe can lead to an exciting composite nuclear-interacting form of dark matter, which can even dominate in large scale structure formation."},"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":"astro-ph/0602261","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-02-11T23:49:51Z","cross_cats_sorted":[],"title_canon_sha256":"c4b08b1c03d322e052df00ca065faba2fb15038c3a9460469530431a605173cf","abstract_canon_sha256":"b2a48fe2dd0f73460a405afd7126c3fdfcb5820fa34cb62f146b4635f77ff42d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:55:40.009880Z","signature_b64":"//l9J/nvp6Ek9lXYBwlwX3XP98LHABzF1l9HF3HWfYQagGFKF3XSR9CbxlYvoD/MiixeR7+8Im/bZVPvAFKTBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d61322a38084cf3b2ab6246e126cef110e36c4cb2e233921d2f8a5b5f5ae52f6","last_reissued_at":"2026-05-18T00:55:40.009430Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:55:40.009430Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Stable matter of 4th generation: hidden in the Universe and close to detection?","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"K.Belotsky, K.Shibaev, M.Khlopov","submitted_at":"2006-02-11T23:49:51Z","abstract_excerpt":"Stable neutrino and U quark of 4th generation are excluded neither by experimental data, nor by astrophysical constraints. Moreover, excess of stable $\\bar U$ quarks in the Universe can lead to an exciting composite nuclear-interacting form of dark matter, which can even dominate in large scale structure formation."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0602261","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":"astro-ph/0602261","created_at":"2026-05-18T00:55:40.009502+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0602261v1","created_at":"2026-05-18T00:55:40.009502+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0602261","created_at":"2026-05-18T00:55:40.009502+00:00"},{"alias_kind":"pith_short_12","alias_value":"2YJSFI4AQTHT","created_at":"2026-05-18T12:25:53.939244+00:00"},{"alias_kind":"pith_short_16","alias_value":"2YJSFI4AQTHTWKVW","created_at":"2026-05-18T12:25:53.939244+00:00"},{"alias_kind":"pith_short_8","alias_value":"2YJSFI4A","created_at":"2026-05-18T12:25:53.939244+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/2YJSFI4AQTHTWKVWERXBE3HPCE","json":"https://pith.science/pith/2YJSFI4AQTHTWKVWERXBE3HPCE.json","graph_json":"https://pith.science/api/pith-number/2YJSFI4AQTHTWKVWERXBE3HPCE/graph.json","events_json":"https://pith.science/api/pith-number/2YJSFI4AQTHTWKVWERXBE3HPCE/events.json","paper":"https://pith.science/paper/2YJSFI4A"},"agent_actions":{"view_html":"https://pith.science/pith/2YJSFI4AQTHTWKVWERXBE3HPCE","download_json":"https://pith.science/pith/2YJSFI4AQTHTWKVWERXBE3HPCE.json","view_paper":"https://pith.science/paper/2YJSFI4A","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0602261&json=true","fetch_graph":"https://pith.science/api/pith-number/2YJSFI4AQTHTWKVWERXBE3HPCE/graph.json","fetch_events":"https://pith.science/api/pith-number/2YJSFI4AQTHTWKVWERXBE3HPCE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2YJSFI4AQTHTWKVWERXBE3HPCE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2YJSFI4AQTHTWKVWERXBE3HPCE/action/storage_attestation","attest_author":"https://pith.science/pith/2YJSFI4AQTHTWKVWERXBE3HPCE/action/author_attestation","sign_citation":"https://pith.science/pith/2YJSFI4AQTHTWKVWERXBE3HPCE/action/citation_signature","submit_replication":"https://pith.science/pith/2YJSFI4AQTHTWKVWERXBE3HPCE/action/replication_record"}},"created_at":"2026-05-18T00:55:40.009502+00:00","updated_at":"2026-05-18T00:55:40.009502+00:00"}