{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:L6XSUBYJFPARLTXIKYXIENCD75","short_pith_number":"pith:L6XSUBYJ","canonical_record":{"source":{"id":"1307.7555","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-07-29T12:24:40Z","cross_cats_sorted":[],"title_canon_sha256":"4f18ff53b2499153c9575f46ba6aa7135b2a9affa64af55d55b8a60f4aa7f2bd","abstract_canon_sha256":"72c27e6b4e764c74cfbd703a5185dd229483cd7913916737cc01eb38ab8eb6b9"},"schema_version":"1.0"},"canonical_sha256":"5faf2a07092bc115cee8562e823443ff4bf1ccf6b55a00a130513a655617b5f7","source":{"kind":"arxiv","id":"1307.7555","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.7555","created_at":"2026-05-18T03:17:22Z"},{"alias_kind":"arxiv_version","alias_value":"1307.7555v1","created_at":"2026-05-18T03:17:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.7555","created_at":"2026-05-18T03:17:22Z"},{"alias_kind":"pith_short_12","alias_value":"L6XSUBYJFPAR","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"L6XSUBYJFPARLTXI","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"L6XSUBYJ","created_at":"2026-05-18T12:27:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:L6XSUBYJFPARLTXIKYXIENCD75","target":"record","payload":{"canonical_record":{"source":{"id":"1307.7555","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-07-29T12:24:40Z","cross_cats_sorted":[],"title_canon_sha256":"4f18ff53b2499153c9575f46ba6aa7135b2a9affa64af55d55b8a60f4aa7f2bd","abstract_canon_sha256":"72c27e6b4e764c74cfbd703a5185dd229483cd7913916737cc01eb38ab8eb6b9"},"schema_version":"1.0"},"canonical_sha256":"5faf2a07092bc115cee8562e823443ff4bf1ccf6b55a00a130513a655617b5f7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:17:22.981092Z","signature_b64":"LEJjyPh6ZGwTm0VUhv5csF1xLt4cM09AUb27cul3toxpeDWLFflhBukhkDvQfcADLUX7FFCbjAxJRa+HXxw5Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5faf2a07092bc115cee8562e823443ff4bf1ccf6b55a00a130513a655617b5f7","last_reissued_at":"2026-05-18T03:17:22.980477Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:17:22.980477Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.7555","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":"2026-05-18T03:17:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hN88q3Zu4wpjaybBem1grLUZdxhfXbUEF5KEj5V48+S+zHzYyjkWhsTFEXNx92LpBiGcZWnNA7GTTwGnwDpRBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:07:50.914366Z"},"content_sha256":"ccf675409a72804e84892d653f4261840da7a6dd22ecf0f653c62acebd9f78c1","schema_version":"1.0","event_id":"sha256:ccf675409a72804e84892d653f4261840da7a6dd22ecf0f653c62acebd9f78c1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:L6XSUBYJFPARLTXIKYXIENCD75","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Specific Heat Capacity of TiO2 Nanoparticles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"E. Shojaee, M. Mahjour-Shafiei, M. R. Mohammadizadeh, M. Saeedian","submitted_at":"2013-07-29T12:24:40Z","abstract_excerpt":"We have calculated heat capacity of TiO2 nanoparticles in three stable polymorphs by applying size and surface effects on heat capacity of the bulk structure. The size and surface corrections were imposed on the acoustic and optical bulk phonons, separately. The model used in the present work is a simple modification of the model proposed by Wang et al. We applied the modified model to obtain the specific heat capacity of 10-100 nm TiO2 nanoparticles. A very good consistency is observed between the computational and experimental data. Based on the modified model, particles with sizes larger th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.7555","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":"2026-05-18T03:17:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rz0APxjQE9TuX83yTq4tmIJjU+dsp3NMQwucmUWbVzPeNe78LtdDBxb+zf7PQahKs+YFUtQvXZ1XR20duPXLCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:07:50.915078Z"},"content_sha256":"6d08173a6f6ddcc4eacbc75f605084b4e7af0656959d5fc17b983fe7dc463df5","schema_version":"1.0","event_id":"sha256:6d08173a6f6ddcc4eacbc75f605084b4e7af0656959d5fc17b983fe7dc463df5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/L6XSUBYJFPARLTXIKYXIENCD75/bundle.json","state_url":"https://pith.science/pith/L6XSUBYJFPARLTXIKYXIENCD75/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/L6XSUBYJFPARLTXIKYXIENCD75/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":"2026-06-06T15:07:50Z","links":{"resolver":"https://pith.science/pith/L6XSUBYJFPARLTXIKYXIENCD75","bundle":"https://pith.science/pith/L6XSUBYJFPARLTXIKYXIENCD75/bundle.json","state":"https://pith.science/pith/L6XSUBYJFPARLTXIKYXIENCD75/state.json","well_known_bundle":"https://pith.science/.well-known/pith/L6XSUBYJFPARLTXIKYXIENCD75/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:L6XSUBYJFPARLTXIKYXIENCD75","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":"72c27e6b4e764c74cfbd703a5185dd229483cd7913916737cc01eb38ab8eb6b9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-07-29T12:24:40Z","title_canon_sha256":"4f18ff53b2499153c9575f46ba6aa7135b2a9affa64af55d55b8a60f4aa7f2bd"},"schema_version":"1.0","source":{"id":"1307.7555","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.7555","created_at":"2026-05-18T03:17:22Z"},{"alias_kind":"arxiv_version","alias_value":"1307.7555v1","created_at":"2026-05-18T03:17:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.7555","created_at":"2026-05-18T03:17:22Z"},{"alias_kind":"pith_short_12","alias_value":"L6XSUBYJFPAR","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"L6XSUBYJFPARLTXI","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"L6XSUBYJ","created_at":"2026-05-18T12:27:51Z"}],"graph_snapshots":[{"event_id":"sha256:6d08173a6f6ddcc4eacbc75f605084b4e7af0656959d5fc17b983fe7dc463df5","target":"graph","created_at":"2026-05-18T03:17:22Z","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":"We have calculated heat capacity of TiO2 nanoparticles in three stable polymorphs by applying size and surface effects on heat capacity of the bulk structure. The size and surface corrections were imposed on the acoustic and optical bulk phonons, separately. The model used in the present work is a simple modification of the model proposed by Wang et al. We applied the modified model to obtain the specific heat capacity of 10-100 nm TiO2 nanoparticles. A very good consistency is observed between the computational and experimental data. Based on the modified model, particles with sizes larger th","authors_text":"E. Shojaee, M. Mahjour-Shafiei, M. R. Mohammadizadeh, M. Saeedian","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-07-29T12:24:40Z","title":"Specific Heat Capacity of TiO2 Nanoparticles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.7555","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:ccf675409a72804e84892d653f4261840da7a6dd22ecf0f653c62acebd9f78c1","target":"record","created_at":"2026-05-18T03:17:22Z","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":"72c27e6b4e764c74cfbd703a5185dd229483cd7913916737cc01eb38ab8eb6b9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-07-29T12:24:40Z","title_canon_sha256":"4f18ff53b2499153c9575f46ba6aa7135b2a9affa64af55d55b8a60f4aa7f2bd"},"schema_version":"1.0","source":{"id":"1307.7555","kind":"arxiv","version":1}},"canonical_sha256":"5faf2a07092bc115cee8562e823443ff4bf1ccf6b55a00a130513a655617b5f7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5faf2a07092bc115cee8562e823443ff4bf1ccf6b55a00a130513a655617b5f7","first_computed_at":"2026-05-18T03:17:22.980477Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:17:22.980477Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LEJjyPh6ZGwTm0VUhv5csF1xLt4cM09AUb27cul3toxpeDWLFflhBukhkDvQfcADLUX7FFCbjAxJRa+HXxw5Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:17:22.981092Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.7555","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ccf675409a72804e84892d653f4261840da7a6dd22ecf0f653c62acebd9f78c1","sha256:6d08173a6f6ddcc4eacbc75f605084b4e7af0656959d5fc17b983fe7dc463df5"],"state_sha256":"7dfbbd40ba20cf9fe324cdfe6db8bfc86aa75bf79fbf3e01641653dc8a77c0fc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EfaYaty0go5urDQ/CTPpKoEoBH8/IXrzVzIctD7HpxMhQTv+d+AK4FBqTdldJA8o0qISY1lJfThutq55k0x0Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T15:07:50.918809Z","bundle_sha256":"5b24920d1bd23a7403fa8f81d868b966b34ed2b6143a2c81e7ce9d160b2a4319"}}