{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:QWG2Q3WYRJSXOVPZBVX634WNFY","short_pith_number":"pith:QWG2Q3WY","canonical_record":{"source":{"id":"1107.4399","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-07-22T00:08:22Z","cross_cats_sorted":[],"title_canon_sha256":"eb0f0d0e27d74a7370c86630bd055242c6ba5dad2d641720c652febfb9f96785","abstract_canon_sha256":"5610d8a14cab369387c23891ea64b158132573dfaa02b0b69aa0527bf1fa9875"},"schema_version":"1.0"},"canonical_sha256":"858da86ed88a657755f90d6fedf2cd2e2cd5a3b70552589d544c2bee03867078","source":{"kind":"arxiv","id":"1107.4399","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.4399","created_at":"2026-05-18T04:06:33Z"},{"alias_kind":"arxiv_version","alias_value":"1107.4399v1","created_at":"2026-05-18T04:06:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.4399","created_at":"2026-05-18T04:06:33Z"},{"alias_kind":"pith_short_12","alias_value":"QWG2Q3WYRJSX","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"QWG2Q3WYRJSXOVPZ","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"QWG2Q3WY","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:QWG2Q3WYRJSXOVPZBVX634WNFY","target":"record","payload":{"canonical_record":{"source":{"id":"1107.4399","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-07-22T00:08:22Z","cross_cats_sorted":[],"title_canon_sha256":"eb0f0d0e27d74a7370c86630bd055242c6ba5dad2d641720c652febfb9f96785","abstract_canon_sha256":"5610d8a14cab369387c23891ea64b158132573dfaa02b0b69aa0527bf1fa9875"},"schema_version":"1.0"},"canonical_sha256":"858da86ed88a657755f90d6fedf2cd2e2cd5a3b70552589d544c2bee03867078","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:06:33.056118Z","signature_b64":"lXIwE6uDogQC+cFcMPNFMfE4rjX/bGNi+gmfYwY45fr4mn6tbVeu9Ey4VMz7pyqAEOJyFytFvHEp9Gj3wfTGBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"858da86ed88a657755f90d6fedf2cd2e2cd5a3b70552589d544c2bee03867078","last_reissued_at":"2026-05-18T04:06:33.055384Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:06:33.055384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1107.4399","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":"2026-05-18T04:06:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mcNiNHNNuNtmI517NqXQ230BYFOD+bui6vJblSYpf3oCsEjTpVWzEmOntFoETHDe1xbmzvOfIBHFj2MDK/QnDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:35:56.996134Z"},"content_sha256":"60a2ab5364ea05ece791ddcc19b9ef7bc4b68a6e42bf7d015ee000e01f550450","schema_version":"1.0","event_id":"sha256:60a2ab5364ea05ece791ddcc19b9ef7bc4b68a6e42bf7d015ee000e01f550450"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:QWG2Q3WYRJSXOVPZBVX634WNFY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First principles study of electronic and structural properties of CuO","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Burak Himmetoglu, Matteo Cococcioni, Renata M. Wentzcovitch","submitted_at":"2011-07-22T00:08:22Z","abstract_excerpt":"We investigate the electronic and structural properties of CuO, which shows significant deviations from the trends obeyed by other transition-metal monoxides. Using an extended Hubbard corrective functional, we uncover an orbitally ordered insulating ground state for the cubic phase of this material, which was expected but never found before. This insulating state results from a fine balance between the tendency of Cu to complete its d-shell and Hund's rule magnetism. Starting from the ground state for the cubic phase, we also study tetragonal distortions of the unit cell (recently reported in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4399","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":""},"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":"2026-05-18T04:06:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jwqfQSSLcq3Fgx4s6Er5bVrFVGI1O4lbsVz1o4mAuWMazm/gxBtc2+7OvRwbEJjFMB7hpnTqilOIQXULW2EFBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:35:56.996507Z"},"content_sha256":"279e4c56a86e103fdd3e2440dd5bad02826ba076f44b1a6d044759db9e3c75b2","schema_version":"1.0","event_id":"sha256:279e4c56a86e103fdd3e2440dd5bad02826ba076f44b1a6d044759db9e3c75b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QWG2Q3WYRJSXOVPZBVX634WNFY/bundle.json","state_url":"https://pith.science/pith/QWG2Q3WYRJSXOVPZBVX634WNFY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QWG2Q3WYRJSXOVPZBVX634WNFY/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":"2026-06-03T02:35:56Z","links":{"resolver":"https://pith.science/pith/QWG2Q3WYRJSXOVPZBVX634WNFY","bundle":"https://pith.science/pith/QWG2Q3WYRJSXOVPZBVX634WNFY/bundle.json","state":"https://pith.science/pith/QWG2Q3WYRJSXOVPZBVX634WNFY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QWG2Q3WYRJSXOVPZBVX634WNFY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:QWG2Q3WYRJSXOVPZBVX634WNFY","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":"5610d8a14cab369387c23891ea64b158132573dfaa02b0b69aa0527bf1fa9875","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-07-22T00:08:22Z","title_canon_sha256":"eb0f0d0e27d74a7370c86630bd055242c6ba5dad2d641720c652febfb9f96785"},"schema_version":"1.0","source":{"id":"1107.4399","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.4399","created_at":"2026-05-18T04:06:33Z"},{"alias_kind":"arxiv_version","alias_value":"1107.4399v1","created_at":"2026-05-18T04:06:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.4399","created_at":"2026-05-18T04:06:33Z"},{"alias_kind":"pith_short_12","alias_value":"QWG2Q3WYRJSX","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"QWG2Q3WYRJSXOVPZ","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"QWG2Q3WY","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:279e4c56a86e103fdd3e2440dd5bad02826ba076f44b1a6d044759db9e3c75b2","target":"graph","created_at":"2026-05-18T04:06:33Z","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":"We investigate the electronic and structural properties of CuO, which shows significant deviations from the trends obeyed by other transition-metal monoxides. Using an extended Hubbard corrective functional, we uncover an orbitally ordered insulating ground state for the cubic phase of this material, which was expected but never found before. This insulating state results from a fine balance between the tendency of Cu to complete its d-shell and Hund's rule magnetism. Starting from the ground state for the cubic phase, we also study tetragonal distortions of the unit cell (recently reported in","authors_text":"Burak Himmetoglu, Matteo Cococcioni, Renata M. Wentzcovitch","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-07-22T00:08:22Z","title":"First principles study of electronic and structural properties of CuO"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4399","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":"sha256:60a2ab5364ea05ece791ddcc19b9ef7bc4b68a6e42bf7d015ee000e01f550450","target":"record","created_at":"2026-05-18T04:06:33Z","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":"5610d8a14cab369387c23891ea64b158132573dfaa02b0b69aa0527bf1fa9875","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-07-22T00:08:22Z","title_canon_sha256":"eb0f0d0e27d74a7370c86630bd055242c6ba5dad2d641720c652febfb9f96785"},"schema_version":"1.0","source":{"id":"1107.4399","kind":"arxiv","version":1}},"canonical_sha256":"858da86ed88a657755f90d6fedf2cd2e2cd5a3b70552589d544c2bee03867078","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"858da86ed88a657755f90d6fedf2cd2e2cd5a3b70552589d544c2bee03867078","first_computed_at":"2026-05-18T04:06:33.055384Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:06:33.055384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lXIwE6uDogQC+cFcMPNFMfE4rjX/bGNi+gmfYwY45fr4mn6tbVeu9Ey4VMz7pyqAEOJyFytFvHEp9Gj3wfTGBw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:06:33.056118Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.4399","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:60a2ab5364ea05ece791ddcc19b9ef7bc4b68a6e42bf7d015ee000e01f550450","sha256:279e4c56a86e103fdd3e2440dd5bad02826ba076f44b1a6d044759db9e3c75b2"],"state_sha256":"4575e2879fa905cc7440147216c61539d85aaac44a57fd47ef41e9d69c17d38e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I9+PMHe5elFozjL4ZeJ7ZC+ZMfvLw9Tn2xJtNOvH8B799vXbxGL2nYHsAaTr8SnXv1Hv9T7e6Q2Hp1eQr/gGBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T02:35:56.998584Z","bundle_sha256":"02e8f3cc8a5d44bb868c69f10becb56ebf07059735a3e97034cb6094d0d20bc2"}}