{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:X4W7HDNRGQCCDXDNMYKRQ4AUMH","short_pith_number":"pith:X4W7HDNR","canonical_record":{"source":{"id":"1603.06982","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-01-30T03:29:02Z","cross_cats_sorted":[],"title_canon_sha256":"8ce491612123c4ce6c67e1e434d96d88817fd66597486fa0bb9b6796ae0b5d2d","abstract_canon_sha256":"a41c70f4b354289cb55a2edf54de03ad261ebdb7411756d5725db81bdd4bd2c3"},"schema_version":"1.0"},"canonical_sha256":"bf2df38db1340421dc6d661518701461eb9066838b5cbbebd3f190a47c55b659","source":{"kind":"arxiv","id":"1603.06982","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.06982","created_at":"2026-05-18T01:13:53Z"},{"alias_kind":"arxiv_version","alias_value":"1603.06982v1","created_at":"2026-05-18T01:13:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.06982","created_at":"2026-05-18T01:13:53Z"},{"alias_kind":"pith_short_12","alias_value":"X4W7HDNRGQCC","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"X4W7HDNRGQCCDXDN","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"X4W7HDNR","created_at":"2026-05-18T12:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:X4W7HDNRGQCCDXDNMYKRQ4AUMH","target":"record","payload":{"canonical_record":{"source":{"id":"1603.06982","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-01-30T03:29:02Z","cross_cats_sorted":[],"title_canon_sha256":"8ce491612123c4ce6c67e1e434d96d88817fd66597486fa0bb9b6796ae0b5d2d","abstract_canon_sha256":"a41c70f4b354289cb55a2edf54de03ad261ebdb7411756d5725db81bdd4bd2c3"},"schema_version":"1.0"},"canonical_sha256":"bf2df38db1340421dc6d661518701461eb9066838b5cbbebd3f190a47c55b659","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:13:53.743633Z","signature_b64":"przIkyyxm/2pBjz0k/D7Td+UYJBoLn5j+HC5MQmALyM1Y4coE5+BpiDWmwmexaLyaAoSS8laujDKqd+mgfKgAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf2df38db1340421dc6d661518701461eb9066838b5cbbebd3f190a47c55b659","last_reissued_at":"2026-05-18T01:13:53.742835Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:13:53.742835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1603.06982","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":"2026-05-18T01:13:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zVNqpKicgMFGoZJ53mVsK0Xh402Q0uun46jMYFdU3BEKfl5F+CbzhMtJ9M3HX0gISAS/7dEteLByBNmXRhaiDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:39:06.149083Z"},"content_sha256":"a0e9a853a0101df242f6a77602d2cfe04eb42f39477963a5413c48060b49714b","schema_version":"1.0","event_id":"sha256:a0e9a853a0101df242f6a77602d2cfe04eb42f39477963a5413c48060b49714b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:X4W7HDNRGQCCDXDNMYKRQ4AUMH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A DFT+U study on the contribution of 4f electrons to oxygen vacancy formation and migration in Ln-doped CeO2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Hideaki Kasai, Mamoru Sakaue, Musa Alaydrus","submitted_at":"2016-01-30T03:29:02Z","abstract_excerpt":"Rare-earth doped form, ceria (CeO2) is of interest as a potential candidate for solid oxide fuel cells (SOFCs) because of its relatively high oxygen ion conductivity at temperatures below 600 {\\deg}C. At the present time, computational chemistry has reached a certain maturity which allows prediction of materials properties that are difficult to observe experimentally. However, understanding of the roles of dopants on the oxygen ion conduction in CeO2 is still incomplete for quantitatively reliable analysis due to strong electron correlation of 4f electrons. In this study, density functional th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.06982","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":""},"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":"2026-05-18T01:13:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o+1GTsgZEPmslDL6WhmH8peYZh7rjJI2X4FWdUGMQuSkjS+lgYgLAool2p5HhbDPbC5nBPioqz3ZI698zbnoCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:39:06.149772Z"},"content_sha256":"e23cb3d0a14afc79d048b0737b4c00e039b3c40e0b78be8cb27631f5894f6025","schema_version":"1.0","event_id":"sha256:e23cb3d0a14afc79d048b0737b4c00e039b3c40e0b78be8cb27631f5894f6025"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X4W7HDNRGQCCDXDNMYKRQ4AUMH/bundle.json","state_url":"https://pith.science/pith/X4W7HDNRGQCCDXDNMYKRQ4AUMH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X4W7HDNRGQCCDXDNMYKRQ4AUMH/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":"2026-05-31T23:39:06Z","links":{"resolver":"https://pith.science/pith/X4W7HDNRGQCCDXDNMYKRQ4AUMH","bundle":"https://pith.science/pith/X4W7HDNRGQCCDXDNMYKRQ4AUMH/bundle.json","state":"https://pith.science/pith/X4W7HDNRGQCCDXDNMYKRQ4AUMH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X4W7HDNRGQCCDXDNMYKRQ4AUMH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:X4W7HDNRGQCCDXDNMYKRQ4AUMH","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":"a41c70f4b354289cb55a2edf54de03ad261ebdb7411756d5725db81bdd4bd2c3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-01-30T03:29:02Z","title_canon_sha256":"8ce491612123c4ce6c67e1e434d96d88817fd66597486fa0bb9b6796ae0b5d2d"},"schema_version":"1.0","source":{"id":"1603.06982","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.06982","created_at":"2026-05-18T01:13:53Z"},{"alias_kind":"arxiv_version","alias_value":"1603.06982v1","created_at":"2026-05-18T01:13:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.06982","created_at":"2026-05-18T01:13:53Z"},{"alias_kind":"pith_short_12","alias_value":"X4W7HDNRGQCC","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"X4W7HDNRGQCCDXDN","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"X4W7HDNR","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:e23cb3d0a14afc79d048b0737b4c00e039b3c40e0b78be8cb27631f5894f6025","target":"graph","created_at":"2026-05-18T01:13:53Z","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"},"paper":{"abstract_excerpt":"Rare-earth doped form, ceria (CeO2) is of interest as a potential candidate for solid oxide fuel cells (SOFCs) because of its relatively high oxygen ion conductivity at temperatures below 600 {\\deg}C. At the present time, computational chemistry has reached a certain maturity which allows prediction of materials properties that are difficult to observe experimentally. However, understanding of the roles of dopants on the oxygen ion conduction in CeO2 is still incomplete for quantitatively reliable analysis due to strong electron correlation of 4f electrons. In this study, density functional th","authors_text":"Hideaki Kasai, Mamoru Sakaue, Musa Alaydrus","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-01-30T03:29:02Z","title":"A DFT+U study on the contribution of 4f electrons to oxygen vacancy formation and migration in Ln-doped CeO2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.06982","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:a0e9a853a0101df242f6a77602d2cfe04eb42f39477963a5413c48060b49714b","target":"record","created_at":"2026-05-18T01:13:53Z","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":"a41c70f4b354289cb55a2edf54de03ad261ebdb7411756d5725db81bdd4bd2c3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-01-30T03:29:02Z","title_canon_sha256":"8ce491612123c4ce6c67e1e434d96d88817fd66597486fa0bb9b6796ae0b5d2d"},"schema_version":"1.0","source":{"id":"1603.06982","kind":"arxiv","version":1}},"canonical_sha256":"bf2df38db1340421dc6d661518701461eb9066838b5cbbebd3f190a47c55b659","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf2df38db1340421dc6d661518701461eb9066838b5cbbebd3f190a47c55b659","first_computed_at":"2026-05-18T01:13:53.742835Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:13:53.742835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"przIkyyxm/2pBjz0k/D7Td+UYJBoLn5j+HC5MQmALyM1Y4coE5+BpiDWmwmexaLyaAoSS8laujDKqd+mgfKgAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:13:53.743633Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.06982","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0e9a853a0101df242f6a77602d2cfe04eb42f39477963a5413c48060b49714b","sha256:e23cb3d0a14afc79d048b0737b4c00e039b3c40e0b78be8cb27631f5894f6025"],"state_sha256":"6049203f864e7bd02e75bb5f377bbb8fe0656761fa66871942e0cd7815d8a93b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NEI1gSnyEoZpywWi+hTtfa6mo9DTZLX8W+lUH6YV1K1b9/adcCvbTSa2sAgzAwKDmBn9HioPL/7/P59bxTXFBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T23:39:06.153761Z","bundle_sha256":"6615f57b74217b39ac136452b13d820cd7845a461ca03f06fc708cc294badb21"}}