{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:CXUXYOJEJDODLVMXZCE54YASX4","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":"c9472ee0bb322006eee40f786bafd65670153692c1710040921c85a7d9b2c91a","cross_cats_sorted":["cond-mat.other"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2023-02-03T08:07:02Z","title_canon_sha256":"ce493724a1026ff02a7946ef5d4fe83e2103e2b0b97bc3535b5213816ea5b075"},"schema_version":"1.0","source":{"id":"2302.01591","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.01591","created_at":"2026-07-05T05:38:34Z"},{"alias_kind":"arxiv_version","alias_value":"2302.01591v1","created_at":"2026-07-05T05:38:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.01591","created_at":"2026-07-05T05:38:34Z"},{"alias_kind":"pith_short_12","alias_value":"CXUXYOJEJDOD","created_at":"2026-07-05T05:38:34Z"},{"alias_kind":"pith_short_16","alias_value":"CXUXYOJEJDODLVMX","created_at":"2026-07-05T05:38:34Z"},{"alias_kind":"pith_short_8","alias_value":"CXUXYOJE","created_at":"2026-07-05T05:38:34Z"}],"graph_snapshots":[{"event_id":"sha256:1d47931c7f15619054bf85713afff54cd4fefff90094bdc130777deb87b13fa5","target":"graph","created_at":"2026-07-05T05:38:34Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2302.01591/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Three-dimensional (3D) two-band Hopf insulators are a paradigmatic example of topological phases beyond the topological classifications based on powerful methods like $K$-theory and symmetry indicators.Since this class of topological insulating phases was theoretically proposed in 2008, they have attracted significant interest owing to their conceptual novelty, connection to knot theory, and many fascinating physical properties. However, because their realization requires special forms of long-range spin-orbit coupling (SOC), they have not been achieved in any 3D system yet. Here we report the","authors_text":"Rui Yu, Xu-Tao Zeng, Yuanchuan Biao, Zhongbo Yan, Zhu Wang","cross_cats":["cond-mat.other"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2023-02-03T08:07:02Z","title":"Realization of a Hopf insulator in circuit systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.01591","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":"sha256:955cf488bdd9ed05b9db0fac5b887fc08c40e9e447e1211942ca291f72f43f55","target":"record","created_at":"2026-07-05T05:38:34Z","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":"c9472ee0bb322006eee40f786bafd65670153692c1710040921c85a7d9b2c91a","cross_cats_sorted":["cond-mat.other"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2023-02-03T08:07:02Z","title_canon_sha256":"ce493724a1026ff02a7946ef5d4fe83e2103e2b0b97bc3535b5213816ea5b075"},"schema_version":"1.0","source":{"id":"2302.01591","kind":"arxiv","version":1}},"canonical_sha256":"15e97c392448dc35d597c889de6012bf29eb8b212a8dcf806b8c599a65a3493d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15e97c392448dc35d597c889de6012bf29eb8b212a8dcf806b8c599a65a3493d","first_computed_at":"2026-07-05T05:38:34.115347Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:38:34.115347Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LNf0ElS15poIyr0abTVns3ZupVDAhqTfqFWoNGv5OfnBdrM4lR4pEGpcLPlJIHGEVX1l/JDvcGdFoO/p3xK0Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:38:34.115798Z","signed_message":"canonical_sha256_bytes"},"source_id":"2302.01591","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:955cf488bdd9ed05b9db0fac5b887fc08c40e9e447e1211942ca291f72f43f55","sha256:1d47931c7f15619054bf85713afff54cd4fefff90094bdc130777deb87b13fa5"],"state_sha256":"6347510718b98dbfb3ecf0649158f46605854644a8bcff0dc02062fbe01992c9"}