{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:TPBG4YOFAZ66OATVY2SINYGR66","short_pith_number":"pith:TPBG4YOF","canonical_record":{"source":{"id":"2608.11812","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-08-12T08:57:37Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"c1680bb7636d6d0254abc23952e1e4efb11e3ce7a2383c0227125422d6c31d35","abstract_canon_sha256":"691b02f17ded71d57ed16aa2ab8e083f6281c48910b231759c194565f79bbec0"},"schema_version":"1.0"},"canonical_sha256":"9bc26e61c5067de70275c6a486e0d1f7a6b2ee6518b55b91a624997f8299ab57","source":{"kind":"arxiv","id":"2608.11812","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.11812","created_at":"2026-08-13T01:28:19Z"},{"alias_kind":"arxiv_version","alias_value":"2608.11812v1","created_at":"2026-08-13T01:28:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.11812","created_at":"2026-08-13T01:28:19Z"},{"alias_kind":"pith_short_12","alias_value":"TPBG4YOFAZ66","created_at":"2026-08-13T01:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"TPBG4YOFAZ66OATV","created_at":"2026-08-13T01:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"TPBG4YOF","created_at":"2026-08-13T01:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:TPBG4YOFAZ66OATVY2SINYGR66","target":"record","payload":{"canonical_record":{"source":{"id":"2608.11812","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-08-12T08:57:37Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"c1680bb7636d6d0254abc23952e1e4efb11e3ce7a2383c0227125422d6c31d35","abstract_canon_sha256":"691b02f17ded71d57ed16aa2ab8e083f6281c48910b231759c194565f79bbec0"},"schema_version":"1.0"},"canonical_sha256":"9bc26e61c5067de70275c6a486e0d1f7a6b2ee6518b55b91a624997f8299ab57","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-13T01:28:19.058047Z","signature_b64":"FITL/+mmeMrLsfBsw+gXnYOVXhYcBMsBLiJwCnKETXDLgmtNwG9rq6k41TVcvSxAIKyonKvvmHxjLbukLBb+DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9bc26e61c5067de70275c6a486e0d1f7a6b2ee6518b55b91a624997f8299ab57","last_reissued_at":"2026-08-13T01:28:19.055734Z","signature_status":"signed_v1","first_computed_at":"2026-08-13T01:28:19.055734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.11812","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":"2026-08-13T01:28:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CxXMX60LPX+B9u8lCncEh8szR6YsLCVXygG2KMq2GZwyK2qmZzNTscgdV+SAFckgRmtpCodsqaTUQ7BvJFu7Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T05:54:40.186639Z"},"content_sha256":"b1e788d777f2d3730bd9ce3fdb4e5eae767a472199d11a2457d20b41348b100a","schema_version":"1.0","event_id":"sha256:b1e788d777f2d3730bd9ce3fdb4e5eae767a472199d11a2457d20b41348b100a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:TPBG4YOFAZ66OATVY2SINYGR66","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Data-Efficient Adaptation of DPA-4 Force Fields to DFT+U Energetics: A Case Study in NiO","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Fengyu Xie, Peiheng Jiang, Zhicheng Zhong","submitted_at":"2026-08-12T08:57:37Z","abstract_excerpt":"Foundation machine-learned force fields (MLFFs) are often pretrained on broad materials datasets whose electronic-structure conventions may not reproduce the phase energetics required for a specific correlated material. Using NiO as a case study, we examine whether incorrect source-level phase energetics can be corrected efficiently through target-level fine-tuning. Along a common structural interpolation, non-spin-polarized PBE and ferromagnetic PBE+U predict opposite energetic orderings of the octahedral Oct and square-planar Sqr phases. Pretrained DPA-4 models adapt rapidly to the NiO PBE+U"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.11812","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/2608.11812/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":"2026-08-13T01:28:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MAMD2J2pimDBRME8UqLw/5e7AvT4/Sf0fK7xhAxR2ig1NOWgr0h1i6tgULPJz8Xf7X7dOaTKB6pMCLu+N+QMAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T05:54:40.187159Z"},"content_sha256":"93afa03515019597a208d30abcab8c930e99b56623904bdba067a3dba799614f","schema_version":"1.0","event_id":"sha256:93afa03515019597a208d30abcab8c930e99b56623904bdba067a3dba799614f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TPBG4YOFAZ66OATVY2SINYGR66/bundle.json","state_url":"https://pith.science/pith/TPBG4YOFAZ66OATVY2SINYGR66/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TPBG4YOFAZ66OATVY2SINYGR66/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":"2026-08-23T05:54:40Z","links":{"resolver":"https://pith.science/pith/TPBG4YOFAZ66OATVY2SINYGR66","bundle":"https://pith.science/pith/TPBG4YOFAZ66OATVY2SINYGR66/bundle.json","state":"https://pith.science/pith/TPBG4YOFAZ66OATVY2SINYGR66/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TPBG4YOFAZ66OATVY2SINYGR66/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:TPBG4YOFAZ66OATVY2SINYGR66","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":"691b02f17ded71d57ed16aa2ab8e083f6281c48910b231759c194565f79bbec0","cross_cats_sorted":["physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-08-12T08:57:37Z","title_canon_sha256":"c1680bb7636d6d0254abc23952e1e4efb11e3ce7a2383c0227125422d6c31d35"},"schema_version":"1.0","source":{"id":"2608.11812","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.11812","created_at":"2026-08-13T01:28:19Z"},{"alias_kind":"arxiv_version","alias_value":"2608.11812v1","created_at":"2026-08-13T01:28:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.11812","created_at":"2026-08-13T01:28:19Z"},{"alias_kind":"pith_short_12","alias_value":"TPBG4YOFAZ66","created_at":"2026-08-13T01:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"TPBG4YOFAZ66OATV","created_at":"2026-08-13T01:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"TPBG4YOF","created_at":"2026-08-13T01:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:93afa03515019597a208d30abcab8c930e99b56623904bdba067a3dba799614f","target":"graph","created_at":"2026-08-13T01:28:19Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2608.11812/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Foundation machine-learned force fields (MLFFs) are often pretrained on broad materials datasets whose electronic-structure conventions may not reproduce the phase energetics required for a specific correlated material. Using NiO as a case study, we examine whether incorrect source-level phase energetics can be corrected efficiently through target-level fine-tuning. Along a common structural interpolation, non-spin-polarized PBE and ferromagnetic PBE+U predict opposite energetic orderings of the octahedral Oct and square-planar Sqr phases. Pretrained DPA-4 models adapt rapidly to the NiO PBE+U","authors_text":"Fengyu Xie, Peiheng Jiang, Zhicheng Zhong","cross_cats":["physics.comp-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-08-12T08:57:37Z","title":"Data-Efficient Adaptation of DPA-4 Force Fields to DFT+U Energetics: A Case Study in NiO"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.11812","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:b1e788d777f2d3730bd9ce3fdb4e5eae767a472199d11a2457d20b41348b100a","target":"record","created_at":"2026-08-13T01:28:19Z","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":"691b02f17ded71d57ed16aa2ab8e083f6281c48910b231759c194565f79bbec0","cross_cats_sorted":["physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-08-12T08:57:37Z","title_canon_sha256":"c1680bb7636d6d0254abc23952e1e4efb11e3ce7a2383c0227125422d6c31d35"},"schema_version":"1.0","source":{"id":"2608.11812","kind":"arxiv","version":1}},"canonical_sha256":"9bc26e61c5067de70275c6a486e0d1f7a6b2ee6518b55b91a624997f8299ab57","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9bc26e61c5067de70275c6a486e0d1f7a6b2ee6518b55b91a624997f8299ab57","first_computed_at":"2026-08-13T01:28:19.055734Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-13T01:28:19.055734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FITL/+mmeMrLsfBsw+gXnYOVXhYcBMsBLiJwCnKETXDLgmtNwG9rq6k41TVcvSxAIKyonKvvmHxjLbukLBb+DQ==","signature_status":"signed_v1","signed_at":"2026-08-13T01:28:19.058047Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.11812","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b1e788d777f2d3730bd9ce3fdb4e5eae767a472199d11a2457d20b41348b100a","sha256:93afa03515019597a208d30abcab8c930e99b56623904bdba067a3dba799614f"],"state_sha256":"0b22ff7ec322719414db8ba4c93fe5e96f27bd5a83cd85300751826dc8aa959e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GuAp915zOLjtJ0xjDTI9+5pPN5Hzj/d5wOW1T/Euv0BgHBr35gPVRpCogiujLHSiUbiM4xgadUmva1jNIBm2DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T05:54:40.192298Z","bundle_sha256":"f1a24491457a8c3837b1f3f6362ade8c58e5529b0040ce20b46aff9cac885866"}}