{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:XNM6YHH5YJX2UFGQ7EVR76FUXE","short_pith_number":"pith:XNM6YHH5","canonical_record":{"source":{"id":"2010.07939","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2020-10-15T14:17:20Z","cross_cats_sorted":[],"title_canon_sha256":"c0646e1a2ad893289b134926699e3f2f0793c245f9a73c2b5f77e55ddb793c8d","abstract_canon_sha256":"d8919c189f3a9ce8c50ce81beb6176e0e855d313d3f80632b9b92c79203ce2cb"},"schema_version":"1.0"},"canonical_sha256":"bb59ec1cfdc26faa14d0f92b1ff8b4b91be5d00081518503c9c8fb08daf6bbab","source":{"kind":"arxiv","id":"2010.07939","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.07939","created_at":"2026-07-05T01:43:29Z"},{"alias_kind":"arxiv_version","alias_value":"2010.07939v1","created_at":"2026-07-05T01:43:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.07939","created_at":"2026-07-05T01:43:29Z"},{"alias_kind":"pith_short_12","alias_value":"XNM6YHH5YJX2","created_at":"2026-07-05T01:43:29Z"},{"alias_kind":"pith_short_16","alias_value":"XNM6YHH5YJX2UFGQ","created_at":"2026-07-05T01:43:29Z"},{"alias_kind":"pith_short_8","alias_value":"XNM6YHH5","created_at":"2026-07-05T01:43:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:XNM6YHH5YJX2UFGQ7EVR76FUXE","target":"record","payload":{"canonical_record":{"source":{"id":"2010.07939","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2020-10-15T14:17:20Z","cross_cats_sorted":[],"title_canon_sha256":"c0646e1a2ad893289b134926699e3f2f0793c245f9a73c2b5f77e55ddb793c8d","abstract_canon_sha256":"d8919c189f3a9ce8c50ce81beb6176e0e855d313d3f80632b9b92c79203ce2cb"},"schema_version":"1.0"},"canonical_sha256":"bb59ec1cfdc26faa14d0f92b1ff8b4b91be5d00081518503c9c8fb08daf6bbab","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:43:29.383473Z","signature_b64":"buXGF5NwvPH4e0vWpNTCz0sAyje7Wj57ztcg7vKFLgotVeayuELpJXs6elfZjE7GVki2x5rAETvhUUQeeBzaBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bb59ec1cfdc26faa14d0f92b1ff8b4b91be5d00081518503c9c8fb08daf6bbab","last_reissued_at":"2026-07-05T01:43:29.383004Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:43:29.383004Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2010.07939","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":"2026-07-05T01:43:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v31+PuWm/hHRINBVI6Pl6GnSbk8LaFR2pQRfo8XMmwrvC9DO5pqxNEkhFwvzg1xtOSSf3ETKP0SonQC1qncQDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T18:05:46.163166Z"},"content_sha256":"ef44f49d84efe53b4865fb283cc2d0aea49c2b88f72bb469fa82ab58767c7645","schema_version":"1.0","event_id":"sha256:ef44f49d84efe53b4865fb283cc2d0aea49c2b88f72bb469fa82ab58767c7645"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:XNM6YHH5YJX2UFGQ7EVR76FUXE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Size Dependence of Lattice Parameter and Electronic Structure in CeO 2 Nanoparticles","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Aaron Beck, Andreas C Scheinost, Damien Prieur, Karin Popa, Kristina Kvashnina, Kyle W Kriegsman, Mark H Engelhard, Olaf Walter, Philippe Martin, Rachel Eloirdi, Thomas Gouder, Tonya Vitova, Walter Bonani, Xiaofeng Guo","submitted_at":"2020-10-15T14:17:20Z","abstract_excerpt":"Intrinsic properties of a compound (e.g., electronic structure, crystallographic structure, optical and magnetic properties) define notably its chemical and physical behavior. In the case of nanomaterials, these fundamental properties depend on the occurrence of quantum mechanical size effects and on the considerable increase of the surface to bulk ratio. Here, we explore the size dependence of both crystal and electronic properties of CeO2 nanoparticles (NPs) with different sizes by state-of-the art spectroscopic techniques. X-ray diffraction, X-ray photoelectron spectroscopy, and high-energy"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.07939","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/2010.07939/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":"2026-07-05T01:43:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TZ+GrprpJRpwTpxM+Pqb3tUwKl9TMnjQw1uJ5iFkOcTME6HqqE+AifsuK80/dcjYE1xMIVV5K67jsrjcRQYEDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T18:05:46.163673Z"},"content_sha256":"c6464e48f950647ed322f4c11985e951ba1101c416513b2dd465129b61eee6b7","schema_version":"1.0","event_id":"sha256:c6464e48f950647ed322f4c11985e951ba1101c416513b2dd465129b61eee6b7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XNM6YHH5YJX2UFGQ7EVR76FUXE/bundle.json","state_url":"https://pith.science/pith/XNM6YHH5YJX2UFGQ7EVR76FUXE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XNM6YHH5YJX2UFGQ7EVR76FUXE/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":"2026-08-22T18:05:46Z","links":{"resolver":"https://pith.science/pith/XNM6YHH5YJX2UFGQ7EVR76FUXE","bundle":"https://pith.science/pith/XNM6YHH5YJX2UFGQ7EVR76FUXE/bundle.json","state":"https://pith.science/pith/XNM6YHH5YJX2UFGQ7EVR76FUXE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XNM6YHH5YJX2UFGQ7EVR76FUXE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:XNM6YHH5YJX2UFGQ7EVR76FUXE","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":"d8919c189f3a9ce8c50ce81beb6176e0e855d313d3f80632b9b92c79203ce2cb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2020-10-15T14:17:20Z","title_canon_sha256":"c0646e1a2ad893289b134926699e3f2f0793c245f9a73c2b5f77e55ddb793c8d"},"schema_version":"1.0","source":{"id":"2010.07939","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.07939","created_at":"2026-07-05T01:43:29Z"},{"alias_kind":"arxiv_version","alias_value":"2010.07939v1","created_at":"2026-07-05T01:43:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.07939","created_at":"2026-07-05T01:43:29Z"},{"alias_kind":"pith_short_12","alias_value":"XNM6YHH5YJX2","created_at":"2026-07-05T01:43:29Z"},{"alias_kind":"pith_short_16","alias_value":"XNM6YHH5YJX2UFGQ","created_at":"2026-07-05T01:43:29Z"},{"alias_kind":"pith_short_8","alias_value":"XNM6YHH5","created_at":"2026-07-05T01:43:29Z"}],"graph_snapshots":[{"event_id":"sha256:c6464e48f950647ed322f4c11985e951ba1101c416513b2dd465129b61eee6b7","target":"graph","created_at":"2026-07-05T01:43:29Z","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/2010.07939/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Intrinsic properties of a compound (e.g., electronic structure, crystallographic structure, optical and magnetic properties) define notably its chemical and physical behavior. In the case of nanomaterials, these fundamental properties depend on the occurrence of quantum mechanical size effects and on the considerable increase of the surface to bulk ratio. Here, we explore the size dependence of both crystal and electronic properties of CeO2 nanoparticles (NPs) with different sizes by state-of-the art spectroscopic techniques. X-ray diffraction, X-ray photoelectron spectroscopy, and high-energy","authors_text":"Aaron Beck, Andreas C Scheinost, Damien Prieur, Karin Popa, Kristina Kvashnina, Kyle W Kriegsman, Mark H Engelhard, Olaf Walter, Philippe Martin, Rachel Eloirdi, Thomas Gouder, Tonya Vitova, Walter Bonani, Xiaofeng Guo","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2020-10-15T14:17:20Z","title":"Size Dependence of Lattice Parameter and Electronic Structure in CeO 2 Nanoparticles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.07939","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:ef44f49d84efe53b4865fb283cc2d0aea49c2b88f72bb469fa82ab58767c7645","target":"record","created_at":"2026-07-05T01:43:29Z","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":"d8919c189f3a9ce8c50ce81beb6176e0e855d313d3f80632b9b92c79203ce2cb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.chem-ph","submitted_at":"2020-10-15T14:17:20Z","title_canon_sha256":"c0646e1a2ad893289b134926699e3f2f0793c245f9a73c2b5f77e55ddb793c8d"},"schema_version":"1.0","source":{"id":"2010.07939","kind":"arxiv","version":1}},"canonical_sha256":"bb59ec1cfdc26faa14d0f92b1ff8b4b91be5d00081518503c9c8fb08daf6bbab","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bb59ec1cfdc26faa14d0f92b1ff8b4b91be5d00081518503c9c8fb08daf6bbab","first_computed_at":"2026-07-05T01:43:29.383004Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:43:29.383004Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"buXGF5NwvPH4e0vWpNTCz0sAyje7Wj57ztcg7vKFLgotVeayuELpJXs6elfZjE7GVki2x5rAETvhUUQeeBzaBw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:43:29.383473Z","signed_message":"canonical_sha256_bytes"},"source_id":"2010.07939","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ef44f49d84efe53b4865fb283cc2d0aea49c2b88f72bb469fa82ab58767c7645","sha256:c6464e48f950647ed322f4c11985e951ba1101c416513b2dd465129b61eee6b7"],"state_sha256":"1649e1394762198cf7614f5bfed35ca193eab4dca7d0285c835e4136bbc970f5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bACl/iJE2rSkd9UYKoS4gezsS/Q5WKB5NJ50taQunMz6VQMXBoDuWkMnBwwLE1imVp3eYGesFPNU/ZPbzHLZAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T18:05:46.167509Z","bundle_sha256":"bf66768bec251167f1b7b6f5922a6869f357fddf95fd22be0ec92105bff3ca98"}}