{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:PH2K3YC6OYGFRTMEZHMB6I6K44","short_pith_number":"pith:PH2K3YC6","canonical_record":{"source":{"id":"1211.0162","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-11-01T12:37:15Z","cross_cats_sorted":[],"title_canon_sha256":"60d397a03b04bbf6a662894777fa583a5416ab4085e8b36ae2ffdfe093dc1579","abstract_canon_sha256":"c2063c94f8349354458a133e8e3bff85d4fb78d132a4f8c63639276a0fada9e0"},"schema_version":"1.0"},"canonical_sha256":"79f4ade05e760c58cd84c9d81f23cae72baef68c9d1fe9bb6bf29edee367e75e","source":{"kind":"arxiv","id":"1211.0162","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.0162","created_at":"2026-05-18T03:41:19Z"},{"alias_kind":"arxiv_version","alias_value":"1211.0162v2","created_at":"2026-05-18T03:41:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.0162","created_at":"2026-05-18T03:41:19Z"},{"alias_kind":"pith_short_12","alias_value":"PH2K3YC6OYGF","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PH2K3YC6OYGFRTME","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PH2K3YC6","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:PH2K3YC6OYGFRTMEZHMB6I6K44","target":"record","payload":{"canonical_record":{"source":{"id":"1211.0162","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-11-01T12:37:15Z","cross_cats_sorted":[],"title_canon_sha256":"60d397a03b04bbf6a662894777fa583a5416ab4085e8b36ae2ffdfe093dc1579","abstract_canon_sha256":"c2063c94f8349354458a133e8e3bff85d4fb78d132a4f8c63639276a0fada9e0"},"schema_version":"1.0"},"canonical_sha256":"79f4ade05e760c58cd84c9d81f23cae72baef68c9d1fe9bb6bf29edee367e75e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:41:19.827414Z","signature_b64":"6djLXxgsWu7+CHCjnAOB2h0kbsZxNlEWBpnao4VlkRj80bSBRT7HPsIUT7Upmatv/VjfZ4gcbjWFWebpNcSZAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"79f4ade05e760c58cd84c9d81f23cae72baef68c9d1fe9bb6bf29edee367e75e","last_reissued_at":"2026-05-18T03:41:19.827006Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:41:19.827006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.0162","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":"2026-05-18T03:41:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m4rPrghJ0wlJdrAW0X2x0D0Sr1+DbAlgelNvCSVNmbjgFQq6SvsNbqPQnjGW7JSuh4wEe6TLGhsKMHEb/Mr7Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T17:12:43.708433Z"},"content_sha256":"8ca57d6ad72db31ea1dac37b15afa22176f61e6131719925d210473b67f7592a","schema_version":"1.0","event_id":"sha256:8ca57d6ad72db31ea1dac37b15afa22176f61e6131719925d210473b67f7592a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:PH2K3YC6OYGFRTMEZHMB6I6K44","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tune of Magnetism and Electronic Structures of Alkali Metal Carbides with Rocksalt Structure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Bin Peng, Wanli Zhang, Wenxu Zhang, Zhida Song","submitted_at":"2012-11-01T12:37:15Z","abstract_excerpt":"Electronic structures of carbides with the rocksalt structure were calculated by full potential electronic codes solving the Kohn-Sham equation. Bonding characters were analyzed by constructing tight-binding Hamiltonian based on maximally-localized Wannier functions. It was found that the cations in these compounds act as an electron provider and the frame is formed by the carbon atoms. The electronic states in the vicinity of the Fermi level are mainly from the p-orbitals of C. Pressure and doping are two efficient ways to tune the magnetic and electronic properties of these compounds. It tur"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.0162","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":"2026-05-18T03:41:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VukxWt1XKgn+reqHDeINSB4I3sUCsi7OzPWFP+l9d/Lx4Kn7G55PO6cf2evPOb+VdfJVJRNRpLXAKqH4vSFlDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T17:12:43.709081Z"},"content_sha256":"1575aa60588fc8eef8c748bd70eeb49f392caa0f2dfff870206b0655401102c1","schema_version":"1.0","event_id":"sha256:1575aa60588fc8eef8c748bd70eeb49f392caa0f2dfff870206b0655401102c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PH2K3YC6OYGFRTMEZHMB6I6K44/bundle.json","state_url":"https://pith.science/pith/PH2K3YC6OYGFRTMEZHMB6I6K44/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PH2K3YC6OYGFRTMEZHMB6I6K44/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":"2026-06-06T17:12:43Z","links":{"resolver":"https://pith.science/pith/PH2K3YC6OYGFRTMEZHMB6I6K44","bundle":"https://pith.science/pith/PH2K3YC6OYGFRTMEZHMB6I6K44/bundle.json","state":"https://pith.science/pith/PH2K3YC6OYGFRTMEZHMB6I6K44/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PH2K3YC6OYGFRTMEZHMB6I6K44/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:PH2K3YC6OYGFRTMEZHMB6I6K44","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":"c2063c94f8349354458a133e8e3bff85d4fb78d132a4f8c63639276a0fada9e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-11-01T12:37:15Z","title_canon_sha256":"60d397a03b04bbf6a662894777fa583a5416ab4085e8b36ae2ffdfe093dc1579"},"schema_version":"1.0","source":{"id":"1211.0162","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.0162","created_at":"2026-05-18T03:41:19Z"},{"alias_kind":"arxiv_version","alias_value":"1211.0162v2","created_at":"2026-05-18T03:41:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.0162","created_at":"2026-05-18T03:41:19Z"},{"alias_kind":"pith_short_12","alias_value":"PH2K3YC6OYGF","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PH2K3YC6OYGFRTME","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PH2K3YC6","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:1575aa60588fc8eef8c748bd70eeb49f392caa0f2dfff870206b0655401102c1","target":"graph","created_at":"2026-05-18T03:41:19Z","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":"Electronic structures of carbides with the rocksalt structure were calculated by full potential electronic codes solving the Kohn-Sham equation. Bonding characters were analyzed by constructing tight-binding Hamiltonian based on maximally-localized Wannier functions. It was found that the cations in these compounds act as an electron provider and the frame is formed by the carbon atoms. The electronic states in the vicinity of the Fermi level are mainly from the p-orbitals of C. Pressure and doping are two efficient ways to tune the magnetic and electronic properties of these compounds. It tur","authors_text":"Bin Peng, Wanli Zhang, Wenxu Zhang, Zhida Song","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-11-01T12:37:15Z","title":"Tune of Magnetism and Electronic Structures of Alkali Metal Carbides with Rocksalt Structure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.0162","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":"sha256:8ca57d6ad72db31ea1dac37b15afa22176f61e6131719925d210473b67f7592a","target":"record","created_at":"2026-05-18T03:41:19Z","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":"c2063c94f8349354458a133e8e3bff85d4fb78d132a4f8c63639276a0fada9e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-11-01T12:37:15Z","title_canon_sha256":"60d397a03b04bbf6a662894777fa583a5416ab4085e8b36ae2ffdfe093dc1579"},"schema_version":"1.0","source":{"id":"1211.0162","kind":"arxiv","version":2}},"canonical_sha256":"79f4ade05e760c58cd84c9d81f23cae72baef68c9d1fe9bb6bf29edee367e75e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"79f4ade05e760c58cd84c9d81f23cae72baef68c9d1fe9bb6bf29edee367e75e","first_computed_at":"2026-05-18T03:41:19.827006Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:41:19.827006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6djLXxgsWu7+CHCjnAOB2h0kbsZxNlEWBpnao4VlkRj80bSBRT7HPsIUT7Upmatv/VjfZ4gcbjWFWebpNcSZAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:41:19.827414Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.0162","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ca57d6ad72db31ea1dac37b15afa22176f61e6131719925d210473b67f7592a","sha256:1575aa60588fc8eef8c748bd70eeb49f392caa0f2dfff870206b0655401102c1"],"state_sha256":"23eb0006dbc323d7346ba54ff86cc76f4a5b98ab1b64734fb7c9ee1a7384ae4c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WQv+N8+XgaFS1qr86B6DyKHfw3ZDt61xBGH5ZCKS2UHmdORwSjOUbMv2NeWLqtX819+vEys3wd/tRfn+f4jUCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T17:12:43.714552Z","bundle_sha256":"d4723502c22adfc29021b9525b4af9904a59598425817d1c13e7a5d12cb703cb"}}