{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SERBP4BYO4DBNOZKVIXQC457BU","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":"ec310cda1533f69ab4c2b63e2025c0fed91ab4c7e2d3c9fec0282897e3eeb572","cross_cats_sorted":["hep-ex","hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2017-05-29T15:24:55Z","title_canon_sha256":"1804308e4c2f023ed542e0b3de8e8a8e19b98a904da952e61bd3678d1cf8afaa"},"schema_version":"1.0","source":{"id":"1705.10252","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.10252","created_at":"2026-05-18T00:31:35Z"},{"alias_kind":"arxiv_version","alias_value":"1705.10252v1","created_at":"2026-05-18T00:31:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.10252","created_at":"2026-05-18T00:31:35Z"},{"alias_kind":"pith_short_12","alias_value":"SERBP4BYO4DB","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SERBP4BYO4DBNOZK","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SERBP4BY","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:fac22aa46486b1275681c96d0503220920c0ffcb52ed9ae3bc3a8f9449b76b61","target":"graph","created_at":"2026-05-18T00:31:35Z","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":"I develop an extension of the usual three-flavor quark model to four flavors (u, d, s and c), and discuss the classification of pentaquark states with hidden charm. This work is motivated by the recent observation of such states by the LHCb Collatoration at CERN.","authors_text":"Roelof Bijker","cross_cats":["hep-ex","hep-ph","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2017-05-29T15:24:55Z","title":"Pentaquark states with hidden charm"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.10252","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":"sha256:46fb173dcad899adf3d90d4bb75143c21d15d1f602b65c51617ebff5396f1608","target":"record","created_at":"2026-05-18T00:31:35Z","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":"ec310cda1533f69ab4c2b63e2025c0fed91ab4c7e2d3c9fec0282897e3eeb572","cross_cats_sorted":["hep-ex","hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2017-05-29T15:24:55Z","title_canon_sha256":"1804308e4c2f023ed542e0b3de8e8a8e19b98a904da952e61bd3678d1cf8afaa"},"schema_version":"1.0","source":{"id":"1705.10252","kind":"arxiv","version":1}},"canonical_sha256":"912217f038770616bb2aaa2f0173bf0d2ff261e7e6d44b787ac136601ead622a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"912217f038770616bb2aaa2f0173bf0d2ff261e7e6d44b787ac136601ead622a","first_computed_at":"2026-05-18T00:31:35.913234Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:35.913234Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SIjkigk9E1VJmP3Tv6tq34rVRyP948xvzFRRuOYp+yE8OY8maYOdJGB+ksORNjw1AePzEZSTW8XfwkG9lTO3BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:35.913696Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.10252","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:46fb173dcad899adf3d90d4bb75143c21d15d1f602b65c51617ebff5396f1608","sha256:fac22aa46486b1275681c96d0503220920c0ffcb52ed9ae3bc3a8f9449b76b61"],"state_sha256":"c94084c9bb33e2fd1c00232e8a9c37a6069afee9bd47436e611a4039d1a1105b"}