{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:KW577DZ34VOHXX6VCA4DKXVASL","short_pith_number":"pith:KW577DZ3","canonical_record":{"source":{"id":"2001.06441","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-01-17T17:35:25Z","cross_cats_sorted":[],"title_canon_sha256":"860e985bc333edee7fc9430a01f3da9585d0998844e3214510bfa901ed59ca79","abstract_canon_sha256":"2e71b936a68cf54c80d892347535160230292b7c44ac30a7aba571c2529e98d5"},"schema_version":"1.0"},"canonical_sha256":"55bbff8f3be55c7bdfd51038355ea092caa17d85d602145bc91f5033a39bab90","source":{"kind":"arxiv","id":"2001.06441","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.06441","created_at":"2026-07-05T01:39:25Z"},{"alias_kind":"arxiv_version","alias_value":"2001.06441v2","created_at":"2026-07-05T01:39:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.06441","created_at":"2026-07-05T01:39:25Z"},{"alias_kind":"pith_short_12","alias_value":"KW577DZ34VOH","created_at":"2026-07-05T01:39:25Z"},{"alias_kind":"pith_short_16","alias_value":"KW577DZ34VOHXX6V","created_at":"2026-07-05T01:39:25Z"},{"alias_kind":"pith_short_8","alias_value":"KW577DZ3","created_at":"2026-07-05T01:39:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:KW577DZ34VOHXX6VCA4DKXVASL","target":"record","payload":{"canonical_record":{"source":{"id":"2001.06441","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-01-17T17:35:25Z","cross_cats_sorted":[],"title_canon_sha256":"860e985bc333edee7fc9430a01f3da9585d0998844e3214510bfa901ed59ca79","abstract_canon_sha256":"2e71b936a68cf54c80d892347535160230292b7c44ac30a7aba571c2529e98d5"},"schema_version":"1.0"},"canonical_sha256":"55bbff8f3be55c7bdfd51038355ea092caa17d85d602145bc91f5033a39bab90","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:39:25.570818Z","signature_b64":"riTMreStwFSmH8jTfv1OYSzhcDQvIxnsbqsm82YXEf+qEF/Te6C5orCkmepHL7wsuQobxjxFmdDfcWtQ+XOAAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"55bbff8f3be55c7bdfd51038355ea092caa17d85d602145bc91f5033a39bab90","last_reissued_at":"2026-07-05T01:39:25.570350Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:39:25.570350Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.06441","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":"2026-07-05T01:39:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rs6hkEKn40iLyMX7JQIfPGl5wU+pya5/Lnt5UloiOPv/eQ2XTJL3Ae80tmv+Bgo5ddwoXor7meV/DW0YDv5qBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T01:10:29.818325Z"},"content_sha256":"5af975ab33eca408e45cb01bc103684d5b250bc85f30249bcceba101cfbe923b","schema_version":"1.0","event_id":"sha256:5af975ab33eca408e45cb01bc103684d5b250bc85f30249bcceba101cfbe923b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:KW577DZ34VOHXX6VCA4DKXVASL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Many-body Electronic Structure of NdNiO$_2$ and CaCuO$_2$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Andrew Millis, Antia S. Botana, Hyowon Park, Jonathan Karp, Manuel Zingl, Michael R. Norman","submitted_at":"2020-01-17T17:35:25Z","abstract_excerpt":"The demonstration of superconductivity in nickelate analogues of high $T_c$ cuprates provides new perspectives on the physics of correlated electron materials. The degree to which the nickelate electronic structure is similar to that of cuprates is an important open question. This paper presents results of a comparative study of the many-body electronic structure and theoretical phase diagram of the isostructural materials CaCuO$_2$ and NdNiO$_2$. Important differences include the proximity of the oxygen $2p$ bands to the Fermi level, the bandwidth of the transition metal-derived $3d$ bands, a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.06441","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2001.06441/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":"2026-07-05T01:39:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GH+ktsJftGbZPs78kp70PbJqQNpGA7zKsuXIlUC3C83s4pt5f37j6WegTQrvz04XN3DQfx0HKZLbIPTRmc0pBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T01:10:29.818836Z"},"content_sha256":"a3e29c4276bf7f6ef9e10bedef612fc6fa057517614590009bac6fbc18a9b367","schema_version":"1.0","event_id":"sha256:a3e29c4276bf7f6ef9e10bedef612fc6fa057517614590009bac6fbc18a9b367"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KW577DZ34VOHXX6VCA4DKXVASL/bundle.json","state_url":"https://pith.science/pith/KW577DZ34VOHXX6VCA4DKXVASL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KW577DZ34VOHXX6VCA4DKXVASL/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":"2026-08-19T01:10:29Z","links":{"resolver":"https://pith.science/pith/KW577DZ34VOHXX6VCA4DKXVASL","bundle":"https://pith.science/pith/KW577DZ34VOHXX6VCA4DKXVASL/bundle.json","state":"https://pith.science/pith/KW577DZ34VOHXX6VCA4DKXVASL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KW577DZ34VOHXX6VCA4DKXVASL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:KW577DZ34VOHXX6VCA4DKXVASL","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":"2e71b936a68cf54c80d892347535160230292b7c44ac30a7aba571c2529e98d5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-01-17T17:35:25Z","title_canon_sha256":"860e985bc333edee7fc9430a01f3da9585d0998844e3214510bfa901ed59ca79"},"schema_version":"1.0","source":{"id":"2001.06441","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.06441","created_at":"2026-07-05T01:39:25Z"},{"alias_kind":"arxiv_version","alias_value":"2001.06441v2","created_at":"2026-07-05T01:39:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.06441","created_at":"2026-07-05T01:39:25Z"},{"alias_kind":"pith_short_12","alias_value":"KW577DZ34VOH","created_at":"2026-07-05T01:39:25Z"},{"alias_kind":"pith_short_16","alias_value":"KW577DZ34VOHXX6V","created_at":"2026-07-05T01:39:25Z"},{"alias_kind":"pith_short_8","alias_value":"KW577DZ3","created_at":"2026-07-05T01:39:25Z"}],"graph_snapshots":[{"event_id":"sha256:a3e29c4276bf7f6ef9e10bedef612fc6fa057517614590009bac6fbc18a9b367","target":"graph","created_at":"2026-07-05T01:39:25Z","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/2001.06441/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The demonstration of superconductivity in nickelate analogues of high $T_c$ cuprates provides new perspectives on the physics of correlated electron materials. The degree to which the nickelate electronic structure is similar to that of cuprates is an important open question. This paper presents results of a comparative study of the many-body electronic structure and theoretical phase diagram of the isostructural materials CaCuO$_2$ and NdNiO$_2$. Important differences include the proximity of the oxygen $2p$ bands to the Fermi level, the bandwidth of the transition metal-derived $3d$ bands, a","authors_text":"Andrew Millis, Antia S. Botana, Hyowon Park, Jonathan Karp, Manuel Zingl, Michael R. Norman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-01-17T17:35:25Z","title":"Many-body Electronic Structure of NdNiO$_2$ and CaCuO$_2$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.06441","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":"sha256:5af975ab33eca408e45cb01bc103684d5b250bc85f30249bcceba101cfbe923b","target":"record","created_at":"2026-07-05T01:39:25Z","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":"2e71b936a68cf54c80d892347535160230292b7c44ac30a7aba571c2529e98d5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-01-17T17:35:25Z","title_canon_sha256":"860e985bc333edee7fc9430a01f3da9585d0998844e3214510bfa901ed59ca79"},"schema_version":"1.0","source":{"id":"2001.06441","kind":"arxiv","version":2}},"canonical_sha256":"55bbff8f3be55c7bdfd51038355ea092caa17d85d602145bc91f5033a39bab90","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"55bbff8f3be55c7bdfd51038355ea092caa17d85d602145bc91f5033a39bab90","first_computed_at":"2026-07-05T01:39:25.570350Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:39:25.570350Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"riTMreStwFSmH8jTfv1OYSzhcDQvIxnsbqsm82YXEf+qEF/Te6C5orCkmepHL7wsuQobxjxFmdDfcWtQ+XOAAA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:39:25.570818Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.06441","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5af975ab33eca408e45cb01bc103684d5b250bc85f30249bcceba101cfbe923b","sha256:a3e29c4276bf7f6ef9e10bedef612fc6fa057517614590009bac6fbc18a9b367"],"state_sha256":"19a2fae2680f13d394846daac1d9c02ec381990c34cd316ac6b67ab33f1a20a4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AlKy/O3LwFIpnEIv2D71oZ5vq0xQNsGqRDmuMfOV09RtGVF4NzjTX56Ecz0GptBwAzopbkyGndjPVFM8LueFCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T01:10:29.823298Z","bundle_sha256":"7e84c7a6771af078490d7739d443ea4ea020fe7fe4515b60cd19f70f3f71cdba"}}