{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:3OPEDSTT6DRDH6WAXBFBC2H3P5","short_pith_number":"pith:3OPEDSTT","canonical_record":{"source":{"id":"2303.00753","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2023-03-01T06:46:04Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"e61834f8078abcf010d3321fcdcadbe13fe1d42ae3dc272d3b715ec52d5264d4","abstract_canon_sha256":"df3ec51b4204322fbb90ea6c80d0aebacb7b3ad32eb97ebe42a675b411ee690a"},"schema_version":"1.0"},"canonical_sha256":"db9e41ca73f0e233fac0b84a1168fb7f5dad6f03f89e515ed380fb6d4af33c38","source":{"kind":"arxiv","id":"2303.00753","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.00753","created_at":"2026-07-05T06:25:21Z"},{"alias_kind":"arxiv_version","alias_value":"2303.00753v1","created_at":"2026-07-05T06:25:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.00753","created_at":"2026-07-05T06:25:21Z"},{"alias_kind":"pith_short_12","alias_value":"3OPEDSTT6DRD","created_at":"2026-07-05T06:25:21Z"},{"alias_kind":"pith_short_16","alias_value":"3OPEDSTT6DRDH6WA","created_at":"2026-07-05T06:25:21Z"},{"alias_kind":"pith_short_8","alias_value":"3OPEDSTT","created_at":"2026-07-05T06:25:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:3OPEDSTT6DRDH6WAXBFBC2H3P5","target":"record","payload":{"canonical_record":{"source":{"id":"2303.00753","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2023-03-01T06:46:04Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"e61834f8078abcf010d3321fcdcadbe13fe1d42ae3dc272d3b715ec52d5264d4","abstract_canon_sha256":"df3ec51b4204322fbb90ea6c80d0aebacb7b3ad32eb97ebe42a675b411ee690a"},"schema_version":"1.0"},"canonical_sha256":"db9e41ca73f0e233fac0b84a1168fb7f5dad6f03f89e515ed380fb6d4af33c38","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:25:21.496069Z","signature_b64":"7BF6Z0ybRYoxx6WfX+xrO8Cz67GWNdK94SsJUDZ4OGraq9xak35wViax3cI3iHnbIOxynKzUG4SKSL61khgxBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"db9e41ca73f0e233fac0b84a1168fb7f5dad6f03f89e515ed380fb6d4af33c38","last_reissued_at":"2026-07-05T06:25:21.495577Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:25:21.495577Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2303.00753","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":"2026-07-05T06:25:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u1E8wmch06btxB3aaQ8oKG+Ix+OWnAMdd7b9FA6KIlkeJ5JZuw3gOkqaHHJQ8Uu5qs/PVaZ7nT3lzmgmgWfYCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T23:57:02.336405Z"},"content_sha256":"c7c4dd994b872999899a42a70fc49549526b38a767db2d8ee526999abbeb4659","schema_version":"1.0","event_id":"sha256:c7c4dd994b872999899a42a70fc49549526b38a767db2d8ee526999abbeb4659"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:3OPEDSTT6DRDH6WAXBFBC2H3P5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Molecular dynamics simulation of the transformation of Fe-Co alloy by machine learning force field based on atomic cluster expansion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.comp-ph","authors_text":"Feng Xu, Haijun Su, Long Hou, Luchao Sun, Wei Ren, Xi Li, Yongle Li","submitted_at":"2023-03-01T06:46:04Z","abstract_excerpt":"The force field describing the calculated interaction between atoms or molecules is the key to the accuracy of many molecular dynamics (MD) simulation results. Compared with traditional or semi-empirical force fields, machine learning force fields have the advantages of faster speed and higher precision. We have employed the method of atomic cluster expansion (ACE) combined with first-principles density functional theory (DFT) calculations for machine learning, and successfully obtained the force field of the binary Fe-Co alloy. Molecular dynamics simulations of Fe-Co alloy carried out using t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.00753","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/2303.00753/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":"2026-07-05T06:25:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hkqVs+Fk+lZ+bOOo/qDf4sQZy0FZ+9/CpqA8Q7QmGilrmrMJPVAQvm24ivE1/oQajYjlIs1SA1eb+XrI6ljzDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T23:57:02.336782Z"},"content_sha256":"540210d29bbf5693d354c89a5d6d359e89350cec5d41495ae92a3f08ae216bf9","schema_version":"1.0","event_id":"sha256:540210d29bbf5693d354c89a5d6d359e89350cec5d41495ae92a3f08ae216bf9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3OPEDSTT6DRDH6WAXBFBC2H3P5/bundle.json","state_url":"https://pith.science/pith/3OPEDSTT6DRDH6WAXBFBC2H3P5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3OPEDSTT6DRDH6WAXBFBC2H3P5/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":"2026-08-21T23:57:02Z","links":{"resolver":"https://pith.science/pith/3OPEDSTT6DRDH6WAXBFBC2H3P5","bundle":"https://pith.science/pith/3OPEDSTT6DRDH6WAXBFBC2H3P5/bundle.json","state":"https://pith.science/pith/3OPEDSTT6DRDH6WAXBFBC2H3P5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3OPEDSTT6DRDH6WAXBFBC2H3P5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:3OPEDSTT6DRDH6WAXBFBC2H3P5","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":"df3ec51b4204322fbb90ea6c80d0aebacb7b3ad32eb97ebe42a675b411ee690a","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2023-03-01T06:46:04Z","title_canon_sha256":"e61834f8078abcf010d3321fcdcadbe13fe1d42ae3dc272d3b715ec52d5264d4"},"schema_version":"1.0","source":{"id":"2303.00753","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.00753","created_at":"2026-07-05T06:25:21Z"},{"alias_kind":"arxiv_version","alias_value":"2303.00753v1","created_at":"2026-07-05T06:25:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.00753","created_at":"2026-07-05T06:25:21Z"},{"alias_kind":"pith_short_12","alias_value":"3OPEDSTT6DRD","created_at":"2026-07-05T06:25:21Z"},{"alias_kind":"pith_short_16","alias_value":"3OPEDSTT6DRDH6WA","created_at":"2026-07-05T06:25:21Z"},{"alias_kind":"pith_short_8","alias_value":"3OPEDSTT","created_at":"2026-07-05T06:25:21Z"}],"graph_snapshots":[{"event_id":"sha256:540210d29bbf5693d354c89a5d6d359e89350cec5d41495ae92a3f08ae216bf9","target":"graph","created_at":"2026-07-05T06:25:21Z","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/2303.00753/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The force field describing the calculated interaction between atoms or molecules is the key to the accuracy of many molecular dynamics (MD) simulation results. Compared with traditional or semi-empirical force fields, machine learning force fields have the advantages of faster speed and higher precision. We have employed the method of atomic cluster expansion (ACE) combined with first-principles density functional theory (DFT) calculations for machine learning, and successfully obtained the force field of the binary Fe-Co alloy. Molecular dynamics simulations of Fe-Co alloy carried out using t","authors_text":"Feng Xu, Haijun Su, Long Hou, Luchao Sun, Wei Ren, Xi Li, Yongle Li","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2023-03-01T06:46:04Z","title":"Molecular dynamics simulation of the transformation of Fe-Co alloy by machine learning force field based on atomic cluster expansion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.00753","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:c7c4dd994b872999899a42a70fc49549526b38a767db2d8ee526999abbeb4659","target":"record","created_at":"2026-07-05T06:25:21Z","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":"df3ec51b4204322fbb90ea6c80d0aebacb7b3ad32eb97ebe42a675b411ee690a","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2023-03-01T06:46:04Z","title_canon_sha256":"e61834f8078abcf010d3321fcdcadbe13fe1d42ae3dc272d3b715ec52d5264d4"},"schema_version":"1.0","source":{"id":"2303.00753","kind":"arxiv","version":1}},"canonical_sha256":"db9e41ca73f0e233fac0b84a1168fb7f5dad6f03f89e515ed380fb6d4af33c38","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"db9e41ca73f0e233fac0b84a1168fb7f5dad6f03f89e515ed380fb6d4af33c38","first_computed_at":"2026-07-05T06:25:21.495577Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:25:21.495577Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7BF6Z0ybRYoxx6WfX+xrO8Cz67GWNdK94SsJUDZ4OGraq9xak35wViax3cI3iHnbIOxynKzUG4SKSL61khgxBg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:25:21.496069Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.00753","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c7c4dd994b872999899a42a70fc49549526b38a767db2d8ee526999abbeb4659","sha256:540210d29bbf5693d354c89a5d6d359e89350cec5d41495ae92a3f08ae216bf9"],"state_sha256":"680155e695fe10ce25b1aac297819281a8791188b763372a2862e48f8eece074"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vMdIutEfwJHToNCWFiFn3fobQTzqaVu3JuFGN/Ewtg38/FidRfk3EoTiS6s33ucA1m1GpGXP1gT3P5MY/OaDAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T23:57:02.339450Z","bundle_sha256":"1db59a8b6276cf57d41f3a293494fed9355dc395997dc44a3b5cc9dc97c819da"}}