{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:XN6LYYUNFORNI2BSWSVU2ZOKTF","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":"db9e334918ae780e016008e1f1dcec35c6cca2bb35ccc38eb2cb0c107f2b1458","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2026-08-11T20:51:09Z","title_canon_sha256":"e08fed0eb5fbddb159e6001052bfa4d964983140fcd886134a85dc6c609ac392"},"schema_version":"1.0","source":{"id":"2608.11428","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.11428","created_at":"2026-08-13T00:21:50Z"},{"alias_kind":"arxiv_version","alias_value":"2608.11428v1","created_at":"2026-08-13T00:21:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.11428","created_at":"2026-08-13T00:21:50Z"},{"alias_kind":"pith_short_12","alias_value":"XN6LYYUNFORN","created_at":"2026-08-13T00:21:50Z"},{"alias_kind":"pith_short_16","alias_value":"XN6LYYUNFORNI2BS","created_at":"2026-08-13T00:21:50Z"},{"alias_kind":"pith_short_8","alias_value":"XN6LYYUN","created_at":"2026-08-13T00:21:50Z"}],"graph_snapshots":[{"event_id":"sha256:d10c27d4d95f66f7d6b1548cfe9f35d4a8c2503fda1f29e5ce8005176c8b7d5e","target":"graph","created_at":"2026-08-13T00:21:50Z","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/2608.11428/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Yttrium polyhydrides are benchmark materials in high-pressure superconductivity, yet several key properties of the Y-H system remain insufficiently characterized. Here we combine contact transport, contactless radio-frequency measurements, pulsed-field experiments, and first-principles calculations to reinvestigate YH$_6$, YH$_9$, and YH$_{10}$ in the pressure range 140-213 GPa. Yttrium hydrides YH$_6$ ($\\textit{$T_c$}$ = 218-221 K) and YH$_9$ ($\\textit{$T_c$}$ = 235-237 K) demonstrate narrow superconducting transitions ($\\textit{${\\Delta}$T$_c$}$ = 2-5 K), approaching the limit imposed by the","authors_text":"Andrey V. Sadakov, Burkhan I. Massalimov, Christoph Heil, Di Zhou, Dmitrii V. Semenok, Fabian J\\H{o}bstl, Ivan A. Troyan, Kirill S. Pervakov, Pedro N. Ferreira, Ryosuke Akashi, Toni Helm, Viktor V. Struzhkin, Vladimir M. Pudalov","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2026-08-11T20:51:09Z","title":"Yttrium Superhydrides Revisited: Advanced Experimental and Theoretical Studies of YH$_6$, YH$_9$ and YH$_{10}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.11428","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":"sha256:2180066ad98648138a22eb6f42d3e1d7dc8042ad3130c689feefbbb400624ee9","target":"record","created_at":"2026-08-13T00:21:50Z","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":"db9e334918ae780e016008e1f1dcec35c6cca2bb35ccc38eb2cb0c107f2b1458","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2026-08-11T20:51:09Z","title_canon_sha256":"e08fed0eb5fbddb159e6001052bfa4d964983140fcd886134a85dc6c609ac392"},"schema_version":"1.0","source":{"id":"2608.11428","kind":"arxiv","version":1}},"canonical_sha256":"bb7cbc628d2ba2d46832b4ab4d65ca996c6410992285baece0f97ca0eff56ab3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bb7cbc628d2ba2d46832b4ab4d65ca996c6410992285baece0f97ca0eff56ab3","first_computed_at":"2026-08-13T00:21:50.118431Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-13T00:21:50.118431Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZJXtlWBVMLRapEMnpkq2dMGciOdvt+mM472/T3ISr8cKUW8NZRXzq4rh/mdud6Cq+dT3PNT/6oCSJFnCwKz3Cg==","signature_status":"signed_v1","signed_at":"2026-08-13T00:21:50.119928Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.11428","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2180066ad98648138a22eb6f42d3e1d7dc8042ad3130c689feefbbb400624ee9","sha256:d10c27d4d95f66f7d6b1548cfe9f35d4a8c2503fda1f29e5ce8005176c8b7d5e"],"state_sha256":"a92e6c721df3575e63c92ef5d4729e1aaac3eabc9379b6db276a3ab4d46a6a44"}