{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:MIZ3UY5RSWR2PNBBRULHBK3YVY","short_pith_number":"pith:MIZ3UY5R","canonical_record":{"source":{"id":"physics/0112075","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.atm-clus","submitted_at":"2001-12-21T04:27:56Z","cross_cats_sorted":[],"title_canon_sha256":"4e635b1ae61318bae7870e656294b446cbfb4a8530efefc372d7ee50fd7083f6","abstract_canon_sha256":"0c6a98a0e70e4316373925c4cbc2ea96d0750c0bba14e84f26fb146dca296088"},"schema_version":"1.0"},"canonical_sha256":"6233ba63b195a3a7b4218d1670ab78ae19d648f641d54af750d905cad28c2fe2","source":{"kind":"arxiv","id":"physics/0112075","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0112075","created_at":"2026-07-04T14:43:34Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0112075v1","created_at":"2026-07-04T14:43:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0112075","created_at":"2026-07-04T14:43:34Z"},{"alias_kind":"pith_short_12","alias_value":"MIZ3UY5RSWR2","created_at":"2026-07-04T14:43:34Z"},{"alias_kind":"pith_short_16","alias_value":"MIZ3UY5RSWR2PNBB","created_at":"2026-07-04T14:43:34Z"},{"alias_kind":"pith_short_8","alias_value":"MIZ3UY5R","created_at":"2026-07-04T14:43:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:MIZ3UY5RSWR2PNBBRULHBK3YVY","target":"record","payload":{"canonical_record":{"source":{"id":"physics/0112075","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.atm-clus","submitted_at":"2001-12-21T04:27:56Z","cross_cats_sorted":[],"title_canon_sha256":"4e635b1ae61318bae7870e656294b446cbfb4a8530efefc372d7ee50fd7083f6","abstract_canon_sha256":"0c6a98a0e70e4316373925c4cbc2ea96d0750c0bba14e84f26fb146dca296088"},"schema_version":"1.0"},"canonical_sha256":"6233ba63b195a3a7b4218d1670ab78ae19d648f641d54af750d905cad28c2fe2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:43:34.051451Z","signature_b64":"tNeHL+T4+1qkZ6DFmYZD3/ClBmFJ7BVCMII0aeqym8dOUshA6HWyWRrX+ql41FFM1BwXAlDkATlKY1csKjBEAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6233ba63b195a3a7b4218d1670ab78ae19d648f641d54af750d905cad28c2fe2","last_reissued_at":"2026-07-04T14:43:34.051080Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:43:34.051080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"physics/0112075","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":"2026-07-04T14:43:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MIWYtNoNdU9qHw8ZFfHZNx/9VodHdteba5amopzCdUeyCt7uHO6qurSnBrfF7KhUvtaJGnbMzOq9+yY5FtnyDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T00:30:06.709270Z"},"content_sha256":"a871827afe2f6a0f337672cc19a0295bcf9638e1cb4709ba09ba229071510780","schema_version":"1.0","event_id":"sha256:a871827afe2f6a0f337672cc19a0295bcf9638e1cb4709ba09ba229071510780"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:MIZ3UY5RSWR2PNBBRULHBK3YVY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Novel structures of Co-Cu bimetallic clusters and their magnetic properties","license":"","headline":"","cross_cats":[],"primary_cat":"physics.atm-clus","authors_text":"Guanghou Wang, Jijun Zhao, Jinlan Wang, Wei Lu, Xiaoshuang Chen","submitted_at":"2001-12-21T04:27:56Z","abstract_excerpt":"The structural and magnetic properties of Co$_{18-m}$Cu$_m$ ($0\\leq m\\leq 18$) clusters are investigated with a genetic algorithm and a $spd$-band model Hamiltonian in the unrestricted Hartree-Hock approximation respectively. In general, Cu atoms tend to occupy the surface, while Co atoms prefer to the interior of the clusters. Layered structures appear in some clusters with given stoichiometric compositions. The introduction of Cu atoms leads to large increase of the magnetic moment of Co-rich circumstance and nearly zero magnetism of the Cu-rich ambient. The interaction between Cu and Co ato"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0112075","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/physics/0112075/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":"2026-07-04T14:43:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dyNs7qhZBnGKfaMrax5/zk6bb7fLVGxM2xaZpMFZds/+gpGWm3cvd9g3RY8Hz9/QdFbVmkxRmI2lnFgWV716CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T00:30:06.709766Z"},"content_sha256":"c373b6505eac1b65ae54497be6ef8b7a5821ba2aad059f214ba165d60864d88d","schema_version":"1.0","event_id":"sha256:c373b6505eac1b65ae54497be6ef8b7a5821ba2aad059f214ba165d60864d88d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MIZ3UY5RSWR2PNBBRULHBK3YVY/bundle.json","state_url":"https://pith.science/pith/MIZ3UY5RSWR2PNBBRULHBK3YVY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MIZ3UY5RSWR2PNBBRULHBK3YVY/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":"2026-08-07T00:30:06Z","links":{"resolver":"https://pith.science/pith/MIZ3UY5RSWR2PNBBRULHBK3YVY","bundle":"https://pith.science/pith/MIZ3UY5RSWR2PNBBRULHBK3YVY/bundle.json","state":"https://pith.science/pith/MIZ3UY5RSWR2PNBBRULHBK3YVY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MIZ3UY5RSWR2PNBBRULHBK3YVY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:MIZ3UY5RSWR2PNBBRULHBK3YVY","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":"0c6a98a0e70e4316373925c4cbc2ea96d0750c0bba14e84f26fb146dca296088","cross_cats_sorted":[],"license":"","primary_cat":"physics.atm-clus","submitted_at":"2001-12-21T04:27:56Z","title_canon_sha256":"4e635b1ae61318bae7870e656294b446cbfb4a8530efefc372d7ee50fd7083f6"},"schema_version":"1.0","source":{"id":"physics/0112075","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0112075","created_at":"2026-07-04T14:43:34Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0112075v1","created_at":"2026-07-04T14:43:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0112075","created_at":"2026-07-04T14:43:34Z"},{"alias_kind":"pith_short_12","alias_value":"MIZ3UY5RSWR2","created_at":"2026-07-04T14:43:34Z"},{"alias_kind":"pith_short_16","alias_value":"MIZ3UY5RSWR2PNBB","created_at":"2026-07-04T14:43:34Z"},{"alias_kind":"pith_short_8","alias_value":"MIZ3UY5R","created_at":"2026-07-04T14:43:34Z"}],"graph_snapshots":[{"event_id":"sha256:c373b6505eac1b65ae54497be6ef8b7a5821ba2aad059f214ba165d60864d88d","target":"graph","created_at":"2026-07-04T14:43:34Z","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/physics/0112075/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The structural and magnetic properties of Co$_{18-m}$Cu$_m$ ($0\\leq m\\leq 18$) clusters are investigated with a genetic algorithm and a $spd$-band model Hamiltonian in the unrestricted Hartree-Hock approximation respectively. In general, Cu atoms tend to occupy the surface, while Co atoms prefer to the interior of the clusters. Layered structures appear in some clusters with given stoichiometric compositions. The introduction of Cu atoms leads to large increase of the magnetic moment of Co-rich circumstance and nearly zero magnetism of the Cu-rich ambient. The interaction between Cu and Co ato","authors_text":"Guanghou Wang, Jijun Zhao, Jinlan Wang, Wei Lu, Xiaoshuang Chen","cross_cats":[],"headline":"","license":"","primary_cat":"physics.atm-clus","submitted_at":"2001-12-21T04:27:56Z","title":"Novel structures of Co-Cu bimetallic clusters and their magnetic properties"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0112075","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:a871827afe2f6a0f337672cc19a0295bcf9638e1cb4709ba09ba229071510780","target":"record","created_at":"2026-07-04T14:43:34Z","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":"0c6a98a0e70e4316373925c4cbc2ea96d0750c0bba14e84f26fb146dca296088","cross_cats_sorted":[],"license":"","primary_cat":"physics.atm-clus","submitted_at":"2001-12-21T04:27:56Z","title_canon_sha256":"4e635b1ae61318bae7870e656294b446cbfb4a8530efefc372d7ee50fd7083f6"},"schema_version":"1.0","source":{"id":"physics/0112075","kind":"arxiv","version":1}},"canonical_sha256":"6233ba63b195a3a7b4218d1670ab78ae19d648f641d54af750d905cad28c2fe2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6233ba63b195a3a7b4218d1670ab78ae19d648f641d54af750d905cad28c2fe2","first_computed_at":"2026-07-04T14:43:34.051080Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:43:34.051080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tNeHL+T4+1qkZ6DFmYZD3/ClBmFJ7BVCMII0aeqym8dOUshA6HWyWRrX+ql41FFM1BwXAlDkATlKY1csKjBEAA==","signature_status":"signed_v1","signed_at":"2026-07-04T14:43:34.051451Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0112075","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a871827afe2f6a0f337672cc19a0295bcf9638e1cb4709ba09ba229071510780","sha256:c373b6505eac1b65ae54497be6ef8b7a5821ba2aad059f214ba165d60864d88d"],"state_sha256":"e1560bdb8f36914a0c6d475a594785e5506d376f03f8ecc7062fbc0ed9ab4c13"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0Wb+JzaE8hrFCU7S8uhhCIwf/xXy7JmBxZYfkgGtO2neQtESD89GTneJpElg3AdJUl26rWQOPVfJ053EYzrnBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T00:30:06.714506Z","bundle_sha256":"b65fab6c42c8335dd7193eac30e0517c4f8c26e86ce47ac8b77c9ee47694117f"}}