{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:SX3TOVZE42TPUF4ICBIHMR27DA","short_pith_number":"pith:SX3TOVZE","canonical_record":{"source":{"id":"0903.1814","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-03-10T16:50:58Z","cross_cats_sorted":[],"title_canon_sha256":"f9a9f4b5143dd3f07e3d16d0584ed09a51ea3c33bc0ebbed0fed90f5f7bb5a73","abstract_canon_sha256":"179475a9fd6462fb88f0e0fa98008d388de670f3291d6c1d49347a27978d31c9"},"schema_version":"1.0"},"canonical_sha256":"95f7375724e6a6fa1788105076475f181c586e2bad72dc824a5d83e381f2ea6b","source":{"kind":"arxiv","id":"0903.1814","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.1814","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"arxiv_version","alias_value":"0903.1814v2","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.1814","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"pith_short_12","alias_value":"SX3TOVZE42TP","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"SX3TOVZE42TPUF4I","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"SX3TOVZE","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:SX3TOVZE42TPUF4ICBIHMR27DA","target":"record","payload":{"canonical_record":{"source":{"id":"0903.1814","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-03-10T16:50:58Z","cross_cats_sorted":[],"title_canon_sha256":"f9a9f4b5143dd3f07e3d16d0584ed09a51ea3c33bc0ebbed0fed90f5f7bb5a73","abstract_canon_sha256":"179475a9fd6462fb88f0e0fa98008d388de670f3291d6c1d49347a27978d31c9"},"schema_version":"1.0"},"canonical_sha256":"95f7375724e6a6fa1788105076475f181c586e2bad72dc824a5d83e381f2ea6b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:36.148777Z","signature_b64":"SdnSj1AqgfT/Lky5z3Tu+UpIo+cfC3CzOtslbgQtMlCTybK9p9/hStHL7PhAZ5UMzDP4aEKb/6O77o8328QcAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"95f7375724e6a6fa1788105076475f181c586e2bad72dc824a5d83e381f2ea6b","last_reissued_at":"2026-05-18T02:14:36.148111Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:36.148111Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0903.1814","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:14:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rICfyLd1CBdNqe1+DsRVvCAowGDoOAEYVN6oTH9phFYFFW9ZhrNO/gSbpf/qUoDatADLNVIr5VPKqBRoVL1JAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:54:50.507413Z"},"content_sha256":"3a12ef2d7e9dd7795cfce57cb9967065738f42ae9d4f668ea96af3393e1890df","schema_version":"1.0","event_id":"sha256:3a12ef2d7e9dd7795cfce57cb9967065738f42ae9d4f668ea96af3393e1890df"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:SX3TOVZE42TPUF4ICBIHMR27DA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The electronic structure of {\\em R}NiC$_2$ intermetallic compounds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"C. Utfeld, J. Laverock, S. B. Dugdale, T. D. Haynes","submitted_at":"2009-03-10T16:50:58Z","abstract_excerpt":"First-principles calculations of the electronic structure of members of the $R$NiC$_2$ series are presented, and their Fermi surfaces investigated for nesting propensities which might be linked to the charge-density waves exhibited by certain members of the series ($R$ = Sm, Gd and Nd). Calculations of the generalized susceptibility, $\\chi_{0}({\\bf q},\\omega)$, show strong peaks at the same ${\\bf q}$-vector in both the real and imaginary parts for these compounds. Moreover, this peak occurs at a wavevector which is very close to that experimentally observed in SmNiC$_2$. In contrast, for LaNiC"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.1814","kind":"arxiv","version":2},"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":"2026-05-18T02:14:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PNj6kRx0dm8mzOlGTyVyGF3vtBSMAPWZQiGTcTvQX1PISAL6rBxI9ms+BWxTjd5zL/x37wEvUyzGMHLmEMuEDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:54:50.507764Z"},"content_sha256":"b19d0d327cba596ab1596cbff25996f75077c6164544a7e48ede72790699ca00","schema_version":"1.0","event_id":"sha256:b19d0d327cba596ab1596cbff25996f75077c6164544a7e48ede72790699ca00"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SX3TOVZE42TPUF4ICBIHMR27DA/bundle.json","state_url":"https://pith.science/pith/SX3TOVZE42TPUF4ICBIHMR27DA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SX3TOVZE42TPUF4ICBIHMR27DA/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":"2026-05-30T05:54:50Z","links":{"resolver":"https://pith.science/pith/SX3TOVZE42TPUF4ICBIHMR27DA","bundle":"https://pith.science/pith/SX3TOVZE42TPUF4ICBIHMR27DA/bundle.json","state":"https://pith.science/pith/SX3TOVZE42TPUF4ICBIHMR27DA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SX3TOVZE42TPUF4ICBIHMR27DA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:SX3TOVZE42TPUF4ICBIHMR27DA","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":"179475a9fd6462fb88f0e0fa98008d388de670f3291d6c1d49347a27978d31c9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-03-10T16:50:58Z","title_canon_sha256":"f9a9f4b5143dd3f07e3d16d0584ed09a51ea3c33bc0ebbed0fed90f5f7bb5a73"},"schema_version":"1.0","source":{"id":"0903.1814","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.1814","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"arxiv_version","alias_value":"0903.1814v2","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.1814","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"pith_short_12","alias_value":"SX3TOVZE42TP","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"SX3TOVZE42TPUF4I","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"SX3TOVZE","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:b19d0d327cba596ab1596cbff25996f75077c6164544a7e48ede72790699ca00","target":"graph","created_at":"2026-05-18T02:14:36Z","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":"First-principles calculations of the electronic structure of members of the $R$NiC$_2$ series are presented, and their Fermi surfaces investigated for nesting propensities which might be linked to the charge-density waves exhibited by certain members of the series ($R$ = Sm, Gd and Nd). Calculations of the generalized susceptibility, $\\chi_{0}({\\bf q},\\omega)$, show strong peaks at the same ${\\bf q}$-vector in both the real and imaginary parts for these compounds. Moreover, this peak occurs at a wavevector which is very close to that experimentally observed in SmNiC$_2$. In contrast, for LaNiC","authors_text":"C. Utfeld, J. Laverock, S. B. Dugdale, T. D. Haynes","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-03-10T16:50:58Z","title":"The electronic structure of {\\em R}NiC$_2$ intermetallic compounds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.1814","kind":"arxiv","version":2},"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":"sha256:3a12ef2d7e9dd7795cfce57cb9967065738f42ae9d4f668ea96af3393e1890df","target":"record","created_at":"2026-05-18T02:14:36Z","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":"179475a9fd6462fb88f0e0fa98008d388de670f3291d6c1d49347a27978d31c9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-03-10T16:50:58Z","title_canon_sha256":"f9a9f4b5143dd3f07e3d16d0584ed09a51ea3c33bc0ebbed0fed90f5f7bb5a73"},"schema_version":"1.0","source":{"id":"0903.1814","kind":"arxiv","version":2}},"canonical_sha256":"95f7375724e6a6fa1788105076475f181c586e2bad72dc824a5d83e381f2ea6b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"95f7375724e6a6fa1788105076475f181c586e2bad72dc824a5d83e381f2ea6b","first_computed_at":"2026-05-18T02:14:36.148111Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:14:36.148111Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SdnSj1AqgfT/Lky5z3Tu+UpIo+cfC3CzOtslbgQtMlCTybK9p9/hStHL7PhAZ5UMzDP4aEKb/6O77o8328QcAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:14:36.148777Z","signed_message":"canonical_sha256_bytes"},"source_id":"0903.1814","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a12ef2d7e9dd7795cfce57cb9967065738f42ae9d4f668ea96af3393e1890df","sha256:b19d0d327cba596ab1596cbff25996f75077c6164544a7e48ede72790699ca00"],"state_sha256":"57a2de50ca58dde33d52d8b5b6f0f9219563ef7b90640bb01edd287b7225dcbe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B/Ie7XCjPnQ3xHZnRG9ozxGgOGDh5iF8rtxYtdZhubJ2tQRh1gTzHlX/anNJp7ToU48ggiSAeOBN0MZYX4FXCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T05:54:50.509728Z","bundle_sha256":"f86c3a2abc87683e7ab9b7c96639ea373a011004ce6da4728896d22bf19e7640"}}