{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:AIGZLFWKURM7GTKCCIMEZI4RV6","short_pith_number":"pith:AIGZLFWK","canonical_record":{"source":{"id":"2101.05668","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-01-14T15:32:45Z","cross_cats_sorted":[],"title_canon_sha256":"8b882620c1f984e666778f63bd402bdc5eb082e3bc4a6597ee50cb156ba692fd","abstract_canon_sha256":"7179ac6757fbd5130d6c4b7f935492f7a4f0d24ede3927205a41f75561e2c73a"},"schema_version":"1.0"},"canonical_sha256":"020d9596caa459f34d4212184ca391af909eb8df5fde323ca393551fbcb1eca0","source":{"kind":"arxiv","id":"2101.05668","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.05668","created_at":"2026-07-05T02:18:58Z"},{"alias_kind":"arxiv_version","alias_value":"2101.05668v1","created_at":"2026-07-05T02:18:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.05668","created_at":"2026-07-05T02:18:58Z"},{"alias_kind":"pith_short_12","alias_value":"AIGZLFWKURM7","created_at":"2026-07-05T02:18:58Z"},{"alias_kind":"pith_short_16","alias_value":"AIGZLFWKURM7GTKC","created_at":"2026-07-05T02:18:58Z"},{"alias_kind":"pith_short_8","alias_value":"AIGZLFWK","created_at":"2026-07-05T02:18:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:AIGZLFWKURM7GTKCCIMEZI4RV6","target":"record","payload":{"canonical_record":{"source":{"id":"2101.05668","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-01-14T15:32:45Z","cross_cats_sorted":[],"title_canon_sha256":"8b882620c1f984e666778f63bd402bdc5eb082e3bc4a6597ee50cb156ba692fd","abstract_canon_sha256":"7179ac6757fbd5130d6c4b7f935492f7a4f0d24ede3927205a41f75561e2c73a"},"schema_version":"1.0"},"canonical_sha256":"020d9596caa459f34d4212184ca391af909eb8df5fde323ca393551fbcb1eca0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:18:58.981552Z","signature_b64":"E6TtNE+Pw3j2gMfH7BxLDNzUm91A5i6uFmjOP4cmlBEQEBEl0ZpHCFh30Zte/9smn/iYk0q0TZVQH1nCt+AeDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"020d9596caa459f34d4212184ca391af909eb8df5fde323ca393551fbcb1eca0","last_reissued_at":"2026-07-05T02:18:58.981153Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:18:58.981153Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2101.05668","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":"2026-07-05T02:18:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZyeD6/qCfjMgeBrRSzM1sa0WUCYA0wajv2QGJk5PVFdtRxQW8jGJoROmgSnv+NSO+D/M3uKVxu/HDIiLvlMiBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T13:41:58.066523Z"},"content_sha256":"426ee7083609ad492b3efab0a9fec63767342e1dd91d18166af0244d66a22816","schema_version":"1.0","event_id":"sha256:426ee7083609ad492b3efab0a9fec63767342e1dd91d18166af0244d66a22816"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:AIGZLFWKURM7GTKCCIMEZI4RV6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Heat capacities of nanostructured wurtzite and rock salt ZnO: challenges of ZnO nano-phase diagram","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alexandre Courac, Andrei N. Baranov, Felix Yu. Sharikov, Konstantin V. Kamenev, Petr S. Sokolov, Vladimir L. Solozhenko","submitted_at":"2021-01-14T15:32:45Z","abstract_excerpt":"Low-temperature heat capacities (Cp) of nanostructured rock salt (rs-ZnO) and wurtzite (w-ZnO) polymorphs of zinc oxide were measured in the 2-315 K temperature range. No significant influence of nanostructuring on Cp of w-ZnO has been observed. The measured Cp of rock salt ZnO is lower than that of wurtzite ZnO below 100 K and is higher above this temperature. Using available thermodynamic data, we established that the equilibrium pressure between nanocrystalline w-ZnO and rs-ZnO is close to 4.6 GPa at 300 K (half as much as the onset pressure of direct phase transformation) and slightly chan"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.05668","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/2101.05668/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":"2026-07-05T02:18:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cK7wvWFdRGkv9Xwqkpox0U7nci2sxx9zbONhuPcLGfy+2snN5/lYXIm26mYR2ewQHO/q+vXzQYq9afdYLkdlDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T13:41:58.067014Z"},"content_sha256":"7fcacf3123eb169892c231f8c66586dc1a3b39d25c6d7b07327fdfca08f96acd","schema_version":"1.0","event_id":"sha256:7fcacf3123eb169892c231f8c66586dc1a3b39d25c6d7b07327fdfca08f96acd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AIGZLFWKURM7GTKCCIMEZI4RV6/bundle.json","state_url":"https://pith.science/pith/AIGZLFWKURM7GTKCCIMEZI4RV6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AIGZLFWKURM7GTKCCIMEZI4RV6/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":"2026-08-22T13:41:58Z","links":{"resolver":"https://pith.science/pith/AIGZLFWKURM7GTKCCIMEZI4RV6","bundle":"https://pith.science/pith/AIGZLFWKURM7GTKCCIMEZI4RV6/bundle.json","state":"https://pith.science/pith/AIGZLFWKURM7GTKCCIMEZI4RV6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AIGZLFWKURM7GTKCCIMEZI4RV6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:AIGZLFWKURM7GTKCCIMEZI4RV6","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":"7179ac6757fbd5130d6c4b7f935492f7a4f0d24ede3927205a41f75561e2c73a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-01-14T15:32:45Z","title_canon_sha256":"8b882620c1f984e666778f63bd402bdc5eb082e3bc4a6597ee50cb156ba692fd"},"schema_version":"1.0","source":{"id":"2101.05668","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.05668","created_at":"2026-07-05T02:18:58Z"},{"alias_kind":"arxiv_version","alias_value":"2101.05668v1","created_at":"2026-07-05T02:18:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.05668","created_at":"2026-07-05T02:18:58Z"},{"alias_kind":"pith_short_12","alias_value":"AIGZLFWKURM7","created_at":"2026-07-05T02:18:58Z"},{"alias_kind":"pith_short_16","alias_value":"AIGZLFWKURM7GTKC","created_at":"2026-07-05T02:18:58Z"},{"alias_kind":"pith_short_8","alias_value":"AIGZLFWK","created_at":"2026-07-05T02:18:58Z"}],"graph_snapshots":[{"event_id":"sha256:7fcacf3123eb169892c231f8c66586dc1a3b39d25c6d7b07327fdfca08f96acd","target":"graph","created_at":"2026-07-05T02:18:58Z","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/2101.05668/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Low-temperature heat capacities (Cp) of nanostructured rock salt (rs-ZnO) and wurtzite (w-ZnO) polymorphs of zinc oxide were measured in the 2-315 K temperature range. No significant influence of nanostructuring on Cp of w-ZnO has been observed. The measured Cp of rock salt ZnO is lower than that of wurtzite ZnO below 100 K and is higher above this temperature. Using available thermodynamic data, we established that the equilibrium pressure between nanocrystalline w-ZnO and rs-ZnO is close to 4.6 GPa at 300 K (half as much as the onset pressure of direct phase transformation) and slightly chan","authors_text":"Alexandre Courac, Andrei N. Baranov, Felix Yu. Sharikov, Konstantin V. Kamenev, Petr S. Sokolov, Vladimir L. Solozhenko","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-01-14T15:32:45Z","title":"Heat capacities of nanostructured wurtzite and rock salt ZnO: challenges of ZnO nano-phase diagram"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.05668","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":"sha256:426ee7083609ad492b3efab0a9fec63767342e1dd91d18166af0244d66a22816","target":"record","created_at":"2026-07-05T02:18:58Z","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":"7179ac6757fbd5130d6c4b7f935492f7a4f0d24ede3927205a41f75561e2c73a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-01-14T15:32:45Z","title_canon_sha256":"8b882620c1f984e666778f63bd402bdc5eb082e3bc4a6597ee50cb156ba692fd"},"schema_version":"1.0","source":{"id":"2101.05668","kind":"arxiv","version":1}},"canonical_sha256":"020d9596caa459f34d4212184ca391af909eb8df5fde323ca393551fbcb1eca0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"020d9596caa459f34d4212184ca391af909eb8df5fde323ca393551fbcb1eca0","first_computed_at":"2026-07-05T02:18:58.981153Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:18:58.981153Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E6TtNE+Pw3j2gMfH7BxLDNzUm91A5i6uFmjOP4cmlBEQEBEl0ZpHCFh30Zte/9smn/iYk0q0TZVQH1nCt+AeDA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:18:58.981552Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.05668","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:426ee7083609ad492b3efab0a9fec63767342e1dd91d18166af0244d66a22816","sha256:7fcacf3123eb169892c231f8c66586dc1a3b39d25c6d7b07327fdfca08f96acd"],"state_sha256":"fa1ab17ad8a0b4452c44ae4fa76cd85ca8e10e320472efbfbbccc1be551e60c6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3v21ijH18ALrUW6Rj0KECl7VfHesTPz4R6z3rIzngFcAzbWJBLiQJP65DiVShhryMxn8iM2WnLZ++xVIGFruBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T13:41:58.070514Z","bundle_sha256":"f823d0333976ece4d16bff29407d8a0dfc567d25d4b6a7cd399cc73f1c3a4926"}}