{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:4LV6YE2HN6OTZU43OTZL57APAI","short_pith_number":"pith:4LV6YE2H","canonical_record":{"source":{"id":"2404.04980","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-04-07T14:52:17Z","cross_cats_sorted":[],"title_canon_sha256":"daa1cf7c1949d1c83a06b5a7b714e785ee496e702fc3335416f8bfdc961ef6da","abstract_canon_sha256":"42affeb57baa3695bd37ce3d1c14ac888ef00d135daa9df8f9ebb7c0b2b9691e"},"schema_version":"1.0"},"canonical_sha256":"e2ebec13476f9d3cd39b74f2befc0f022e1e87f599cad8fbd0a4497947abcba6","source":{"kind":"arxiv","id":"2404.04980","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.04980","created_at":"2026-07-05T08:07:36Z"},{"alias_kind":"arxiv_version","alias_value":"2404.04980v2","created_at":"2026-07-05T08:07:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.04980","created_at":"2026-07-05T08:07:36Z"},{"alias_kind":"pith_short_12","alias_value":"4LV6YE2HN6OT","created_at":"2026-07-05T08:07:36Z"},{"alias_kind":"pith_short_16","alias_value":"4LV6YE2HN6OTZU43","created_at":"2026-07-05T08:07:36Z"},{"alias_kind":"pith_short_8","alias_value":"4LV6YE2H","created_at":"2026-07-05T08:07:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:4LV6YE2HN6OTZU43OTZL57APAI","target":"record","payload":{"canonical_record":{"source":{"id":"2404.04980","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-04-07T14:52:17Z","cross_cats_sorted":[],"title_canon_sha256":"daa1cf7c1949d1c83a06b5a7b714e785ee496e702fc3335416f8bfdc961ef6da","abstract_canon_sha256":"42affeb57baa3695bd37ce3d1c14ac888ef00d135daa9df8f9ebb7c0b2b9691e"},"schema_version":"1.0"},"canonical_sha256":"e2ebec13476f9d3cd39b74f2befc0f022e1e87f599cad8fbd0a4497947abcba6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:07:36.991217Z","signature_b64":"K6Jf0EfUNeoeRW+nWsavx5H+QTvq+0XX4krWvUNtVIfyj8zoi55BDXScCLpwLcpSJ+hS/Us2POGuX/8Rg1UVCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e2ebec13476f9d3cd39b74f2befc0f022e1e87f599cad8fbd0a4497947abcba6","last_reissued_at":"2026-07-05T08:07:36.990745Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:07:36.990745Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.04980","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":"2026-07-05T08:07:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"40mLQwKt7iaahtqH2cl4tRfJPzg4WTnLHyL0GfaVAQCA7taWSgWpgpZzHBZU6CNx+B2RJ4McHJ0oa5swdN+hBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T13:18:26.539930Z"},"content_sha256":"b09fa6108ca33f5ab3eb0e3b861bed871786785a61b2558ea15b480bbded80a1","schema_version":"1.0","event_id":"sha256:b09fa6108ca33f5ab3eb0e3b861bed871786785a61b2558ea15b480bbded80a1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:4LV6YE2HN6OTZU43OTZL57APAI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Element-specific ultrafast lattice dynamics in FePt nanoparticles","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alexander H. Reid, Diego Turenne, Hermann A. D\\\"urr, Igor Vaskivskiy, Jakub Sebesta, Jian Wang, Klaus Sokolowski-Tinten, Matthias Hoffmann, Michael Kozina, Ming-Fu Lin, Oscar Gr{\\aa}n\\\"as, Peter Oppeneer, Stephen Weathersby, Suji Park, Xiaoshe Shen, Xijie Wang, Yukiko K. Takahashi","submitted_at":"2024-04-07T14:52:17Z","abstract_excerpt":"Light-matter interaction at the nanoscale in magnetic alloys and heterostructures is a topic of intense research in view of potential applications in high-density magnetic recording. While the element-specific dynamics of electron spins is directly accessible to resonant x-ray pulses with femtosecond time structure, the possible element-specific atomic motion remains largely unexplored. We use ultrafast electron diffraction to probe the temporal evolution of lattice Bragg peaks of FePt nanoparticles embedded in a carbon matrix following excitation by an optical femtosecond laser pulse. The dif"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.04980","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2404.04980/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":"2026-07-05T08:07:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/djNoaDHJmppb3mpJrf5dMCaPFBhNkJ2qNlW92yuVuKtk3wzSE3aRwzI2qSMvaJaNKBWup/cudzWCb9jsh9gBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T13:18:26.540834Z"},"content_sha256":"6d82493b98c8c72fc85c516383646a8d0f87cb227435f76b661ff5845a3ad248","schema_version":"1.0","event_id":"sha256:6d82493b98c8c72fc85c516383646a8d0f87cb227435f76b661ff5845a3ad248"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4LV6YE2HN6OTZU43OTZL57APAI/bundle.json","state_url":"https://pith.science/pith/4LV6YE2HN6OTZU43OTZL57APAI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4LV6YE2HN6OTZU43OTZL57APAI/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":"2026-08-05T13:18:26Z","links":{"resolver":"https://pith.science/pith/4LV6YE2HN6OTZU43OTZL57APAI","bundle":"https://pith.science/pith/4LV6YE2HN6OTZU43OTZL57APAI/bundle.json","state":"https://pith.science/pith/4LV6YE2HN6OTZU43OTZL57APAI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4LV6YE2HN6OTZU43OTZL57APAI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:4LV6YE2HN6OTZU43OTZL57APAI","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":"42affeb57baa3695bd37ce3d1c14ac888ef00d135daa9df8f9ebb7c0b2b9691e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-04-07T14:52:17Z","title_canon_sha256":"daa1cf7c1949d1c83a06b5a7b714e785ee496e702fc3335416f8bfdc961ef6da"},"schema_version":"1.0","source":{"id":"2404.04980","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.04980","created_at":"2026-07-05T08:07:36Z"},{"alias_kind":"arxiv_version","alias_value":"2404.04980v2","created_at":"2026-07-05T08:07:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.04980","created_at":"2026-07-05T08:07:36Z"},{"alias_kind":"pith_short_12","alias_value":"4LV6YE2HN6OT","created_at":"2026-07-05T08:07:36Z"},{"alias_kind":"pith_short_16","alias_value":"4LV6YE2HN6OTZU43","created_at":"2026-07-05T08:07:36Z"},{"alias_kind":"pith_short_8","alias_value":"4LV6YE2H","created_at":"2026-07-05T08:07:36Z"}],"graph_snapshots":[{"event_id":"sha256:6d82493b98c8c72fc85c516383646a8d0f87cb227435f76b661ff5845a3ad248","target":"graph","created_at":"2026-07-05T08:07:36Z","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/2404.04980/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Light-matter interaction at the nanoscale in magnetic alloys and heterostructures is a topic of intense research in view of potential applications in high-density magnetic recording. While the element-specific dynamics of electron spins is directly accessible to resonant x-ray pulses with femtosecond time structure, the possible element-specific atomic motion remains largely unexplored. We use ultrafast electron diffraction to probe the temporal evolution of lattice Bragg peaks of FePt nanoparticles embedded in a carbon matrix following excitation by an optical femtosecond laser pulse. The dif","authors_text":"Alexander H. Reid, Diego Turenne, Hermann A. D\\\"urr, Igor Vaskivskiy, Jakub Sebesta, Jian Wang, Klaus Sokolowski-Tinten, Matthias Hoffmann, Michael Kozina, Ming-Fu Lin, Oscar Gr{\\aa}n\\\"as, Peter Oppeneer, Stephen Weathersby, Suji Park, Xiaoshe Shen, Xijie Wang, Yukiko K. Takahashi","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-04-07T14:52:17Z","title":"Element-specific ultrafast lattice dynamics in FePt nanoparticles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.04980","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:b09fa6108ca33f5ab3eb0e3b861bed871786785a61b2558ea15b480bbded80a1","target":"record","created_at":"2026-07-05T08:07:36Z","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":"42affeb57baa3695bd37ce3d1c14ac888ef00d135daa9df8f9ebb7c0b2b9691e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2024-04-07T14:52:17Z","title_canon_sha256":"daa1cf7c1949d1c83a06b5a7b714e785ee496e702fc3335416f8bfdc961ef6da"},"schema_version":"1.0","source":{"id":"2404.04980","kind":"arxiv","version":2}},"canonical_sha256":"e2ebec13476f9d3cd39b74f2befc0f022e1e87f599cad8fbd0a4497947abcba6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e2ebec13476f9d3cd39b74f2befc0f022e1e87f599cad8fbd0a4497947abcba6","first_computed_at":"2026-07-05T08:07:36.990745Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:07:36.990745Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K6Jf0EfUNeoeRW+nWsavx5H+QTvq+0XX4krWvUNtVIfyj8zoi55BDXScCLpwLcpSJ+hS/Us2POGuX/8Rg1UVCg==","signature_status":"signed_v1","signed_at":"2026-07-05T08:07:36.991217Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.04980","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b09fa6108ca33f5ab3eb0e3b861bed871786785a61b2558ea15b480bbded80a1","sha256:6d82493b98c8c72fc85c516383646a8d0f87cb227435f76b661ff5845a3ad248"],"state_sha256":"305a88cd6b8b382779c15b2e4e4af995ec34aa3dcbbebe64f1b654576812fe65"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vfELnBo9D4GmziLTKNz8kC6G55saQ+sYphKUWRvKZflcYepRFJ8TnaAc4AEQVY5sfuJOdtCkbyBLckIRFVyEBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T13:18:26.551913Z","bundle_sha256":"77afbb265bd47a5d40760c4d4964444b525082e9e2f7d86155da2246d310f02f"}}