{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:SORAH6WXKUWCO67FVROPJID5TU","short_pith_number":"pith:SORAH6WX","canonical_record":{"source":{"id":"2607.07384","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-08T13:16:12Z","cross_cats_sorted":[],"title_canon_sha256":"ec5eb382c7f52023c9cc63e415054a411231f07491a05f602b583ddbc52930fb","abstract_canon_sha256":"08261dd6dbbbfed1bba8c797ef5d7b0b86f9f3896e9377220a023a4da20bec8b"},"schema_version":"1.0"},"canonical_sha256":"93a203fad7552c277be5ac5cf4a07d9d19788816353d5ce2c0825ab807db8ca4","source":{"kind":"arxiv","id":"2607.07384","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.07384","created_at":"2026-07-09T01:20:23Z"},{"alias_kind":"arxiv_version","alias_value":"2607.07384v1","created_at":"2026-07-09T01:20:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.07384","created_at":"2026-07-09T01:20:23Z"},{"alias_kind":"pith_short_12","alias_value":"SORAH6WXKUWC","created_at":"2026-07-09T01:20:23Z"},{"alias_kind":"pith_short_16","alias_value":"SORAH6WXKUWCO67F","created_at":"2026-07-09T01:20:23Z"},{"alias_kind":"pith_short_8","alias_value":"SORAH6WX","created_at":"2026-07-09T01:20:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:SORAH6WXKUWCO67FVROPJID5TU","target":"record","payload":{"canonical_record":{"source":{"id":"2607.07384","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-08T13:16:12Z","cross_cats_sorted":[],"title_canon_sha256":"ec5eb382c7f52023c9cc63e415054a411231f07491a05f602b583ddbc52930fb","abstract_canon_sha256":"08261dd6dbbbfed1bba8c797ef5d7b0b86f9f3896e9377220a023a4da20bec8b"},"schema_version":"1.0"},"canonical_sha256":"93a203fad7552c277be5ac5cf4a07d9d19788816353d5ce2c0825ab807db8ca4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-09T01:20:23.535132Z","signature_b64":"T4XHrHOHXOSm83M8AV+TNGMi/FTULDToTvs9WdxFpuA47zEpDCpw6D9rzWvtyN7rxYZTXms0pbM8QciYLxl9Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"93a203fad7552c277be5ac5cf4a07d9d19788816353d5ce2c0825ab807db8ca4","last_reissued_at":"2026-07-09T01:20:23.534734Z","signature_status":"signed_v1","first_computed_at":"2026-07-09T01:20:23.534734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.07384","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-09T01:20:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CR2stHhYNd91a1hetIggZbOQnBp+lS8Zee9wO1aT9sUIbO7/EzxTBp6ju1gQERHAFv7UU/FGIO7ySIzVCm9sBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T18:27:06.927713Z"},"content_sha256":"271171204bf4e1ab720a7a5fa17bb7253e8062ee03f9b645b44b5724652fd47f","schema_version":"1.0","event_id":"sha256:271171204bf4e1ab720a7a5fa17bb7253e8062ee03f9b645b44b5724652fd47f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:SORAH6WXKUWCO67FVROPJID5TU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimizing high-temperature electron mobility in single-crystal Bi$_2$O$_2$Se based on its unconventional dependence on concentration","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Anton\\'in Sojka, Jan Zich, Ji\\v{r}\\'i Hejtm\\'anek, Ji\\v{r}\\'i Navr\\'atil, Karel Kn\\'i\\v{z}ek, Kyo-Hoon Ahn, Martin M\\'i\\v{s}ek, Pavl\\'ina Ruleov\\'a, Petr Knotek, Petr Levinsk\\'y, Roman Tesa\\v{r}, V\\'aclav Hol\\'y, \\v{C}estm\\'ir Dra\\v{s}ar","submitted_at":"2026-07-08T13:16:12Z","abstract_excerpt":"Quasi-2D Bi$_2$O$_2$Se is part of an intensive materials research effort aimed at finding new semiconductors that outperform silicon-based electronics in terms of speed and power consumption. This material exhibits exceptionally high carrier mobility at low temperatures but mediocre mobility at 300 K. Its high mobility is generally associated with its high permittivity ($\\varepsilon_r$~500), which is also associated with metallicity persisting down to very low carrier concentrations. This material exhibits a counterintuitive increase in carrier mobility as the concentration increases. The conn"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.07384","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.07384/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-09T01:20:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f12Td5kLTCgmLSnFvTsPAq+5U4Bq3MMhx1AzfTrZyPl0+qQSOWyNQDQncSuj81D2JL3TZBhNA5fE1fU5g6GMCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T18:27:06.928239Z"},"content_sha256":"88b6006cc5dead0e5abb253ff595f9d2656f3184a7c235b870cb4e593bb00517","schema_version":"1.0","event_id":"sha256:88b6006cc5dead0e5abb253ff595f9d2656f3184a7c235b870cb4e593bb00517"},{"event_type":"integrity_finding","subject_pith_number":"pith:2026:SORAH6WXKUWCO67FVROPJID5TU","target":"integrity","payload":{"note":"Identifier '10.1002/1521-3749(200009)626:9' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","snippet":"P. Schmidt, O. Rademacher, H. Oppermann, S. Däbritz, Investigations of the Phase Relations in the Quaternary Systems Bi2O3/Bi2Ch’3/Bi2Ch\"3 (Ch=S,Se,Te) II. The System Bi2O3/Bi2Se3/Bi2Te3 ± the Crystal Structure of Bi2O2(TexSe1-x), Z. anorg.","arxiv_id":"2607.07384","detector":"doi_compliance","evidence":{"doi":"10.1002/1521-3749(200009)626:9","arxiv_id":null,"ref_index":4,"raw_excerpt":"P. Schmidt, O. Rademacher, H. Oppermann, S. Däbritz, Investigations of the Phase Relations in the Quaternary Systems Bi2O3/Bi2Ch’3/Bi2Ch\"3 (Ch=S,Se,Te) II. The System Bi2O3/Bi2Se3/Bi2Te3 ± the Crystal Structure of Bi2O2(TexSe1-x), Z. anorg. allg. Chem. 626 (2000) 1999–2003. https://doi.org/10.1002/1521-3749(200009)626:9%3C1999::AID-ZAAC1999%3E3.0.CO;2-B","verdict_class":"cross_source","checked_sources":["crossref_by_doi","openalex_by_doi","doi_org_head"]},"severity":"critical","ref_index":4,"audited_at":"2026-07-09T12:42:00.029376Z","event_type":"pith.integrity.v1","detected_doi":"10.1002/1521-3749(200009)626:9","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"unresolvable_identifier","evidence_hash":"e6a65d64f1ed5cf9e491c6cc2be21d860be309a4c11960209005dd35f68ead6d","paper_version":1,"verdict_class":"cross_source","resolved_title":null,"detector_version":"1.0.0","detected_arxiv_id":null,"integrity_event_id":8895,"payload_sha256":"51acd0abb974a04c6d6e5967a9227f6186aee14132b84d91c2f7a355e597c69d","signature_b64":"1grNatClLx0MAnoQf9rPBv6KamvSaATUlQobPSmc92PZFHiOBirEZ8+6UI4PURVZyd+Gc1H7QbUM0raZ8BFQAQ==","signing_key_id":"pith-v1-2026-05"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-09T12:42:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8vq4Xck94q5a6Px4h80BU2LrxtN+SQe85Rs6NJIY4fCgm7zyrL9ietox7WcTGiJxB1IDB3ddggDDZo6rOTWaAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T18:27:06.932511Z"},"content_sha256":"ef2e24211872b4889651828f0ff2138d19c5f4f8e2f2d7b79ddda7e40c394574","schema_version":"1.0","event_id":"sha256:ef2e24211872b4889651828f0ff2138d19c5f4f8e2f2d7b79ddda7e40c394574"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SORAH6WXKUWCO67FVROPJID5TU/bundle.json","state_url":"https://pith.science/pith/SORAH6WXKUWCO67FVROPJID5TU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SORAH6WXKUWCO67FVROPJID5TU/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-17T18:27:06Z","links":{"resolver":"https://pith.science/pith/SORAH6WXKUWCO67FVROPJID5TU","bundle":"https://pith.science/pith/SORAH6WXKUWCO67FVROPJID5TU/bundle.json","state":"https://pith.science/pith/SORAH6WXKUWCO67FVROPJID5TU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SORAH6WXKUWCO67FVROPJID5TU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:SORAH6WXKUWCO67FVROPJID5TU","merge_version":"pith-open-graph-merge-v1","event_count":3,"valid_event_count":3,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"08261dd6dbbbfed1bba8c797ef5d7b0b86f9f3896e9377220a023a4da20bec8b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-08T13:16:12Z","title_canon_sha256":"ec5eb382c7f52023c9cc63e415054a411231f07491a05f602b583ddbc52930fb"},"schema_version":"1.0","source":{"id":"2607.07384","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.07384","created_at":"2026-07-09T01:20:23Z"},{"alias_kind":"arxiv_version","alias_value":"2607.07384v1","created_at":"2026-07-09T01:20:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.07384","created_at":"2026-07-09T01:20:23Z"},{"alias_kind":"pith_short_12","alias_value":"SORAH6WXKUWC","created_at":"2026-07-09T01:20:23Z"},{"alias_kind":"pith_short_16","alias_value":"SORAH6WXKUWCO67F","created_at":"2026-07-09T01:20:23Z"},{"alias_kind":"pith_short_8","alias_value":"SORAH6WX","created_at":"2026-07-09T01:20:23Z"}],"graph_snapshots":[{"event_id":"sha256:88b6006cc5dead0e5abb253ff595f9d2656f3184a7c235b870cb4e593bb00517","target":"graph","created_at":"2026-07-09T01:20:23Z","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/2607.07384/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quasi-2D Bi$_2$O$_2$Se is part of an intensive materials research effort aimed at finding new semiconductors that outperform silicon-based electronics in terms of speed and power consumption. This material exhibits exceptionally high carrier mobility at low temperatures but mediocre mobility at 300 K. Its high mobility is generally associated with its high permittivity ($\\varepsilon_r$~500), which is also associated with metallicity persisting down to very low carrier concentrations. This material exhibits a counterintuitive increase in carrier mobility as the concentration increases. The conn","authors_text":"Anton\\'in Sojka, Jan Zich, Ji\\v{r}\\'i Hejtm\\'anek, Ji\\v{r}\\'i Navr\\'atil, Karel Kn\\'i\\v{z}ek, Kyo-Hoon Ahn, Martin M\\'i\\v{s}ek, Pavl\\'ina Ruleov\\'a, Petr Knotek, Petr Levinsk\\'y, Roman Tesa\\v{r}, V\\'aclav Hol\\'y, \\v{C}estm\\'ir Dra\\v{s}ar","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-08T13:16:12Z","title":"Optimizing high-temperature electron mobility in single-crystal Bi$_2$O$_2$Se based on its unconventional dependence on concentration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.07384","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":"sha256:271171204bf4e1ab720a7a5fa17bb7253e8062ee03f9b645b44b5724652fd47f","target":"record","created_at":"2026-07-09T01:20:23Z","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":"08261dd6dbbbfed1bba8c797ef5d7b0b86f9f3896e9377220a023a4da20bec8b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-08T13:16:12Z","title_canon_sha256":"ec5eb382c7f52023c9cc63e415054a411231f07491a05f602b583ddbc52930fb"},"schema_version":"1.0","source":{"id":"2607.07384","kind":"arxiv","version":1}},"canonical_sha256":"93a203fad7552c277be5ac5cf4a07d9d19788816353d5ce2c0825ab807db8ca4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"93a203fad7552c277be5ac5cf4a07d9d19788816353d5ce2c0825ab807db8ca4","first_computed_at":"2026-07-09T01:20:23.534734Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-09T01:20:23.534734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T4XHrHOHXOSm83M8AV+TNGMi/FTULDToTvs9WdxFpuA47zEpDCpw6D9rzWvtyN7rxYZTXms0pbM8QciYLxl9Dg==","signature_status":"signed_v1","signed_at":"2026-07-09T01:20:23.535132Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.07384","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:271171204bf4e1ab720a7a5fa17bb7253e8062ee03f9b645b44b5724652fd47f","sha256:88b6006cc5dead0e5abb253ff595f9d2656f3184a7c235b870cb4e593bb00517","sha256:ef2e24211872b4889651828f0ff2138d19c5f4f8e2f2d7b79ddda7e40c394574"],"state_sha256":"6f523a377d3ae2f91a78525c54d3b97fb0be8a3cbc31dfebb5444f62a26bdc7c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t1jtMPR0PETq4gAf1ptqikq//fRIFPM71INTq5G0hAxSCAPVyfUgkuCC/XxuRGJDirH6F45WJUhY9b6BLdEeDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T18:27:06.935069Z","bundle_sha256":"1a7968a50e1c05e06eb4b547a6e1cb53aed867cb082208762f5dcaffeadde3da"}}