{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:QCSV5FM6ELA7T4RZM2H4I2CCDB","short_pith_number":"pith:QCSV5FM6","canonical_record":{"source":{"id":"cond-mat/0403135","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-03-03T22:08:39Z","cross_cats_sorted":[],"title_canon_sha256":"b4178008bbec4fcc4459198dcac3071f42763a50bcf17099b1c030bc3e481fea","abstract_canon_sha256":"0bc4a99840cf2d0497b09b1427677fe84e0bab79dd673e06b903c72830bdf8b6"},"schema_version":"1.0"},"canonical_sha256":"80a55e959e22c1f9f239668fc46842187f6c4533e06f4a4412325ffd8c803a3b","source":{"kind":"arxiv","id":"cond-mat/0403135","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0403135","created_at":"2026-05-18T01:06:54Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0403135v1","created_at":"2026-05-18T01:06:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0403135","created_at":"2026-05-18T01:06:54Z"},{"alias_kind":"pith_short_12","alias_value":"QCSV5FM6ELA7","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"QCSV5FM6ELA7T4RZ","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"QCSV5FM6","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:QCSV5FM6ELA7T4RZM2H4I2CCDB","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0403135","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-03-03T22:08:39Z","cross_cats_sorted":[],"title_canon_sha256":"b4178008bbec4fcc4459198dcac3071f42763a50bcf17099b1c030bc3e481fea","abstract_canon_sha256":"0bc4a99840cf2d0497b09b1427677fe84e0bab79dd673e06b903c72830bdf8b6"},"schema_version":"1.0"},"canonical_sha256":"80a55e959e22c1f9f239668fc46842187f6c4533e06f4a4412325ffd8c803a3b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:06:54.410451Z","signature_b64":"geJRvgdCCitDIe2QFmHp2df8dvRb+Ycb/krq9aAN/noPV+OopUKKWez+e8WQrykLmOdsmepjokJCA1x3XtrsAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"80a55e959e22c1f9f239668fc46842187f6c4533e06f4a4412325ffd8c803a3b","last_reissued_at":"2026-05-18T01:06:54.409741Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:06:54.409741Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0403135","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":"2026-05-18T01:06:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jbpy0RreME+MjQAFSTR/CkgD4VQ7Z9j/1B+Do8fLVrGMjxbJycE1eh3WRYAm5KPkRrETwXontY84T/EXMP99Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T20:08:15.963386Z"},"content_sha256":"c6e316b08e64656a9e611711454bdfead5f5361adc48bed0da0208860f5759b6","schema_version":"1.0","event_id":"sha256:c6e316b08e64656a9e611711454bdfead5f5361adc48bed0da0208860f5759b6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:QCSV5FM6ELA7T4RZM2H4I2CCDB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nesting, spin-fluctuations, and odd-gap superconductivity in NaxCoO2 yH2O","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"D.A. Papaconstantopoulos, D.J. Singh, I.I. Mazin, M.D. Johannes","submitted_at":"2004-03-03T22:08:39Z","abstract_excerpt":"We have calculated the one-electron susceptibility of hydrated NaxCoO2 and find strong nesting nearly commensurate with a 2X2 superstructure. The nesting involves about 70% of all electrons at the Fermi level and is robust with respect to doping. This nesting creates a tendency to a charge density wave compatible with the charge order often seen at x approx 0.5, which is usually ascribed to electrostatic repulsion of Na ions. In the spin channel, it gives rise to strong spin-fluctuations, which should be important for superconductivity. The superconducting state most compatible with this nesti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0403135","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":"2026-05-18T01:06:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iWALMZsquiUtSjBxMKJZr137KZRrLRwlChhQ4/LDUo1VguImK6As7hy/jjkp1VZYzBIWhMbW+xZwMMbVgtIBBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T20:08:15.963808Z"},"content_sha256":"0739d85669ebd61e41429f58eee073bd884cc285eed31194c8f65b8c76272f8c","schema_version":"1.0","event_id":"sha256:0739d85669ebd61e41429f58eee073bd884cc285eed31194c8f65b8c76272f8c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QCSV5FM6ELA7T4RZM2H4I2CCDB/bundle.json","state_url":"https://pith.science/pith/QCSV5FM6ELA7T4RZM2H4I2CCDB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QCSV5FM6ELA7T4RZM2H4I2CCDB/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":"2026-06-06T20:08:15Z","links":{"resolver":"https://pith.science/pith/QCSV5FM6ELA7T4RZM2H4I2CCDB","bundle":"https://pith.science/pith/QCSV5FM6ELA7T4RZM2H4I2CCDB/bundle.json","state":"https://pith.science/pith/QCSV5FM6ELA7T4RZM2H4I2CCDB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QCSV5FM6ELA7T4RZM2H4I2CCDB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:QCSV5FM6ELA7T4RZM2H4I2CCDB","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":"0bc4a99840cf2d0497b09b1427677fe84e0bab79dd673e06b903c72830bdf8b6","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-03-03T22:08:39Z","title_canon_sha256":"b4178008bbec4fcc4459198dcac3071f42763a50bcf17099b1c030bc3e481fea"},"schema_version":"1.0","source":{"id":"cond-mat/0403135","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0403135","created_at":"2026-05-18T01:06:54Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0403135v1","created_at":"2026-05-18T01:06:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0403135","created_at":"2026-05-18T01:06:54Z"},{"alias_kind":"pith_short_12","alias_value":"QCSV5FM6ELA7","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"QCSV5FM6ELA7T4RZ","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"QCSV5FM6","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:0739d85669ebd61e41429f58eee073bd884cc285eed31194c8f65b8c76272f8c","target":"graph","created_at":"2026-05-18T01:06:54Z","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 have calculated the one-electron susceptibility of hydrated NaxCoO2 and find strong nesting nearly commensurate with a 2X2 superstructure. The nesting involves about 70% of all electrons at the Fermi level and is robust with respect to doping. This nesting creates a tendency to a charge density wave compatible with the charge order often seen at x approx 0.5, which is usually ascribed to electrostatic repulsion of Na ions. In the spin channel, it gives rise to strong spin-fluctuations, which should be important for superconductivity. The superconducting state most compatible with this nesti","authors_text":"D.A. Papaconstantopoulos, D.J. Singh, I.I. Mazin, M.D. Johannes","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-03-03T22:08:39Z","title":"Nesting, spin-fluctuations, and odd-gap superconductivity in NaxCoO2 yH2O"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0403135","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:c6e316b08e64656a9e611711454bdfead5f5361adc48bed0da0208860f5759b6","target":"record","created_at":"2026-05-18T01:06:54Z","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":"0bc4a99840cf2d0497b09b1427677fe84e0bab79dd673e06b903c72830bdf8b6","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-03-03T22:08:39Z","title_canon_sha256":"b4178008bbec4fcc4459198dcac3071f42763a50bcf17099b1c030bc3e481fea"},"schema_version":"1.0","source":{"id":"cond-mat/0403135","kind":"arxiv","version":1}},"canonical_sha256":"80a55e959e22c1f9f239668fc46842187f6c4533e06f4a4412325ffd8c803a3b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"80a55e959e22c1f9f239668fc46842187f6c4533e06f4a4412325ffd8c803a3b","first_computed_at":"2026-05-18T01:06:54.409741Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:06:54.409741Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"geJRvgdCCitDIe2QFmHp2df8dvRb+Ycb/krq9aAN/noPV+OopUKKWez+e8WQrykLmOdsmepjokJCA1x3XtrsAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:06:54.410451Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0403135","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c6e316b08e64656a9e611711454bdfead5f5361adc48bed0da0208860f5759b6","sha256:0739d85669ebd61e41429f58eee073bd884cc285eed31194c8f65b8c76272f8c"],"state_sha256":"c2e4f37501601afa2e934cf4cc4fa40570e8e8bd76a9d171423f6044666159ec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OkdljsY5QmCwYvQUNu4fDzrB6EIQ7pFQUixxxhTcr1iaGziOBR6QARYd9NvbDoUKa2Byls4CNc2kGfKy90SuBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T20:08:15.965889Z","bundle_sha256":"81fc538dc26857aa6e17c8da480e0bf11a3f0e8acfc0c279f02b766522b4dfda"}}