{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:5GZWTZZ77QQH4IA5R2KEDJ6YQM","short_pith_number":"pith:5GZWTZZ7","canonical_record":{"source":{"id":"1005.3075","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-05-17T23:10:43Z","cross_cats_sorted":[],"title_canon_sha256":"9c3b023c1769cfd6762363b55d8489ee60d6a9ae06edf46515d6ef40a81a46e6","abstract_canon_sha256":"2ecec3e90ea3c37860ced3f15d4782cb1265942772278fef18e8a86363e7fcfb"},"schema_version":"1.0"},"canonical_sha256":"e9b369e73ffc207e201d8e9441a7d8830e94145d7d1337cff09293e3f58b86df","source":{"kind":"arxiv","id":"1005.3075","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.3075","created_at":"2026-05-18T04:34:37Z"},{"alias_kind":"arxiv_version","alias_value":"1005.3075v2","created_at":"2026-05-18T04:34:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.3075","created_at":"2026-05-18T04:34:37Z"},{"alias_kind":"pith_short_12","alias_value":"5GZWTZZ77QQH","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"5GZWTZZ77QQH4IA5","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"5GZWTZZ7","created_at":"2026-05-18T12:26:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:5GZWTZZ77QQH4IA5R2KEDJ6YQM","target":"record","payload":{"canonical_record":{"source":{"id":"1005.3075","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-05-17T23:10:43Z","cross_cats_sorted":[],"title_canon_sha256":"9c3b023c1769cfd6762363b55d8489ee60d6a9ae06edf46515d6ef40a81a46e6","abstract_canon_sha256":"2ecec3e90ea3c37860ced3f15d4782cb1265942772278fef18e8a86363e7fcfb"},"schema_version":"1.0"},"canonical_sha256":"e9b369e73ffc207e201d8e9441a7d8830e94145d7d1337cff09293e3f58b86df","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:34:37.109239Z","signature_b64":"B/Kc+9NV9Lgv5l+sqs89S8sLOhpiiAHrTym0+AWLHu+eHjNHw0358UrMl9khcXgIsJ+irxZKX5B4UlfQl4TOCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e9b369e73ffc207e201d8e9441a7d8830e94145d7d1337cff09293e3f58b86df","last_reissued_at":"2026-05-18T04:34:37.108850Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:34:37.108850Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1005.3075","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":"2026-05-18T04:34:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y7gc0xZmMbw8bym3y76j6TmorTCFpeq67EWSZteHsroDD5fgEL0MP8ujuEpcmlhx0xvRQ9dmOSe2jxQ7zlwjAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T10:45:34.207198Z"},"content_sha256":"15fd94e29141d62662e5e14734a5bddb83c3ee6871553b7937038a2deba6da8b","schema_version":"1.0","event_id":"sha256:15fd94e29141d62662e5e14734a5bddb83c3ee6871553b7937038a2deba6da8b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:5GZWTZZ77QQH4IA5R2KEDJ6YQM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Metal-terminated Graphene Nanoribbons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Chao Cao, Hai-Ping Cheng, Yan Wang","submitted_at":"2010-05-17T23:10:43Z","abstract_excerpt":"We have investigated structure, electronic, and magnetic properties of metal-terminated zigzag graphene nanoribbons (M-ZGNRs) by first-principles calculations. Two families of metal terminations are studied: (1) 3d-transition metals (TMs) Fe, Co, and Ni and (2) noble metals (NMs) Cu, Ag, and Au. All systems have spin-polarized edge states with antiferromagnetic (AFM) ordering between two edges, except Co-ZGNRs and Ni-ZGNRs which exhibit negligibly small energy differences between AFM and ferromagnetic states with the given ribbon width. In the AFM state the TM terminations transform semiconduc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.3075","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":"2026-05-18T04:34:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1td52+88QY+3mQVi0QM3FxEqDwHEw56rpWdIEVa9ZTcUw31ptqzHfHmK0Efpvq46EXAwm3BF1I1G2K/hPNEyAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T10:45:34.207559Z"},"content_sha256":"bbc98619b1aa3252da002fcbc03359cd7be1351e3250d5d9bca46d97311d5ae6","schema_version":"1.0","event_id":"sha256:bbc98619b1aa3252da002fcbc03359cd7be1351e3250d5d9bca46d97311d5ae6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5GZWTZZ77QQH4IA5R2KEDJ6YQM/bundle.json","state_url":"https://pith.science/pith/5GZWTZZ77QQH4IA5R2KEDJ6YQM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5GZWTZZ77QQH4IA5R2KEDJ6YQM/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":"2026-06-01T10:45:34Z","links":{"resolver":"https://pith.science/pith/5GZWTZZ77QQH4IA5R2KEDJ6YQM","bundle":"https://pith.science/pith/5GZWTZZ77QQH4IA5R2KEDJ6YQM/bundle.json","state":"https://pith.science/pith/5GZWTZZ77QQH4IA5R2KEDJ6YQM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5GZWTZZ77QQH4IA5R2KEDJ6YQM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:5GZWTZZ77QQH4IA5R2KEDJ6YQM","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":"2ecec3e90ea3c37860ced3f15d4782cb1265942772278fef18e8a86363e7fcfb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-05-17T23:10:43Z","title_canon_sha256":"9c3b023c1769cfd6762363b55d8489ee60d6a9ae06edf46515d6ef40a81a46e6"},"schema_version":"1.0","source":{"id":"1005.3075","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.3075","created_at":"2026-05-18T04:34:37Z"},{"alias_kind":"arxiv_version","alias_value":"1005.3075v2","created_at":"2026-05-18T04:34:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.3075","created_at":"2026-05-18T04:34:37Z"},{"alias_kind":"pith_short_12","alias_value":"5GZWTZZ77QQH","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"5GZWTZZ77QQH4IA5","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"5GZWTZZ7","created_at":"2026-05-18T12:26:04Z"}],"graph_snapshots":[{"event_id":"sha256:bbc98619b1aa3252da002fcbc03359cd7be1351e3250d5d9bca46d97311d5ae6","target":"graph","created_at":"2026-05-18T04:34:37Z","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 investigated structure, electronic, and magnetic properties of metal-terminated zigzag graphene nanoribbons (M-ZGNRs) by first-principles calculations. Two families of metal terminations are studied: (1) 3d-transition metals (TMs) Fe, Co, and Ni and (2) noble metals (NMs) Cu, Ag, and Au. All systems have spin-polarized edge states with antiferromagnetic (AFM) ordering between two edges, except Co-ZGNRs and Ni-ZGNRs which exhibit negligibly small energy differences between AFM and ferromagnetic states with the given ribbon width. In the AFM state the TM terminations transform semiconduc","authors_text":"Chao Cao, Hai-Ping Cheng, Yan Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-05-17T23:10:43Z","title":"Metal-terminated Graphene Nanoribbons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.3075","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":"sha256:15fd94e29141d62662e5e14734a5bddb83c3ee6871553b7937038a2deba6da8b","target":"record","created_at":"2026-05-18T04:34:37Z","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":"2ecec3e90ea3c37860ced3f15d4782cb1265942772278fef18e8a86363e7fcfb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-05-17T23:10:43Z","title_canon_sha256":"9c3b023c1769cfd6762363b55d8489ee60d6a9ae06edf46515d6ef40a81a46e6"},"schema_version":"1.0","source":{"id":"1005.3075","kind":"arxiv","version":2}},"canonical_sha256":"e9b369e73ffc207e201d8e9441a7d8830e94145d7d1337cff09293e3f58b86df","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e9b369e73ffc207e201d8e9441a7d8830e94145d7d1337cff09293e3f58b86df","first_computed_at":"2026-05-18T04:34:37.108850Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:34:37.108850Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B/Kc+9NV9Lgv5l+sqs89S8sLOhpiiAHrTym0+AWLHu+eHjNHw0358UrMl9khcXgIsJ+irxZKX5B4UlfQl4TOCg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:34:37.109239Z","signed_message":"canonical_sha256_bytes"},"source_id":"1005.3075","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:15fd94e29141d62662e5e14734a5bddb83c3ee6871553b7937038a2deba6da8b","sha256:bbc98619b1aa3252da002fcbc03359cd7be1351e3250d5d9bca46d97311d5ae6"],"state_sha256":"65f8d2c365add02552e5f2d0a2aa946825b1637e989500ec053cfe8f548efb2b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cuyQ1ZHhdOPiK92RQv7jlsupHg3e6Vdg5tTveF+CrFIb2BGy6o3Xxx7xOveM3/yugWWQUkFqnRticFs/uCOIDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T10:45:34.209526Z","bundle_sha256":"32d62f05a8f1661fb6c97c48a2fa46f52220a50436390afa4d587ed7deee6e2c"}}