{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:AZ4MN4R2ZQ5CHXDVC6QJU2VHMS","merge_version":"pith-open-graph-merge-v1","event_count":5,"valid_event_count":5,"invalid_event_count":0,"equivocation_count":1,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"61ce74c27a25825939a52fcf1c905bd5a983ef61aaec97783ab29393b1062199","cross_cats_sorted":["physics.chem-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-31T14:49:47Z","title_canon_sha256":"21f4e2eb9640582a38ce21706af7c1fafec0d09aefe33ec13927bacbe148f070"},"schema_version":"1.0","source":{"id":"2608.00138","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.00138","created_at":"2026-08-04T00:33:02Z"},{"alias_kind":"arxiv_version","alias_value":"2608.00138v1","created_at":"2026-08-04T00:33:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.00138","created_at":"2026-08-04T00:33:02Z"},{"alias_kind":"pith_short_12","alias_value":"AZ4MN4R2ZQ5C","created_at":"2026-08-04T00:33:02Z"},{"alias_kind":"pith_short_16","alias_value":"AZ4MN4R2ZQ5CHXDV","created_at":"2026-08-04T00:33:02Z"},{"alias_kind":"pith_short_8","alias_value":"AZ4MN4R2","created_at":"2026-08-04T00:33:02Z"}],"graph_snapshots":[{"event_id":"sha256:1bb565b7d0da3fa8478b56f740e5eb494d7007954d6e3535e1380819e2204e9f","target":"graph","created_at":"2026-08-04T00:33:02Z","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/2608.00138/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Bulk hexagonal diamond has been synthesized by independent routes, but its structure remains contested: the two recent refinements disagree even on the sign of the difference between its two inequivalent bond lengths, 238~m\\AA{} apart, and both depart from an earlier 2003 refinement. Here we test the competing structures with first-principles lattice dynamics. Relaxed hexagonal diamond has an interlayer bond \\emph{longer} than the intralayer bonds by 24~m\\AA{} in both functionals, an effect of its eclipsed conformation that scales with polytype hexagonality. The bright zone-center $A_{1g}$ mod","authors_text":"Li Zhu","cross_cats":["physics.chem-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-31T14:49:47Z","title":"Vibrational spectroscopy identifies the bond asymmetry of hexagonal diamond"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.00138","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":"sha256:3ad1e5ca8792ed032471b66a083b31ea28326db874e32a6e4123ab1a6efad469","target":"record","created_at":"2026-08-04T00:33:02Z","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":"61ce74c27a25825939a52fcf1c905bd5a983ef61aaec97783ab29393b1062199","cross_cats_sorted":["physics.chem-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-31T14:49:47Z","title_canon_sha256":"21f4e2eb9640582a38ce21706af7c1fafec0d09aefe33ec13927bacbe148f070"},"schema_version":"1.0","source":{"id":"2608.00138","kind":"arxiv","version":1}},"canonical_sha256":"0678c6f23acc3a23dc7517a09a6aa7649702a9869af9cb53d1842f6fcb396036","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0678c6f23acc3a23dc7517a09a6aa7649702a9869af9cb53d1842f6fcb396036","first_computed_at":"2026-08-04T00:33:02.525494Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-04T00:33:02.525494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"plu0Os6Bn49Ll6rpAzeT755dt4vYuU4Hmhd517tV/R6hsThc7ZiecG/bqQR42Ob3qsoEIkhM13H2T8uH/t9sDw==","signature_status":"signed_v1","signed_at":"2026-08-04T00:33:02.526833Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.00138","source_kind":"arxiv","source_version":1}}},"equivocations":[{"signer_id":"pith.science","event_type":"integrity_finding","target":"integrity","event_ids":["sha256:37781ac0866815cf18a0612996e013ccedbbc121603ba41db8b881bd63e0ad65","sha256:4a5e958763147c7bd09ea3cc8ef95d673d10894971a7dc35d0304b34adf4cf2a","sha256:6358cb8f16c2c94a4f8abc9d19effce1811e425135a98c6b06712ebabf50d458"]}],"invalid_events":[],"applied_event_ids":["sha256:3ad1e5ca8792ed032471b66a083b31ea28326db874e32a6e4123ab1a6efad469","sha256:1bb565b7d0da3fa8478b56f740e5eb494d7007954d6e3535e1380819e2204e9f"],"state_sha256":"b3e34be5a23881d2560a35f743d9854d053dfae3b95cf1c1182a8f4f870bfa67"}