{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:EJHHXOO54NSGTEXFHTSMGOQ2E3","short_pith_number":"pith:EJHHXOO5","canonical_record":{"source":{"id":"1208.3664","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-17T19:41:15Z","cross_cats_sorted":[],"title_canon_sha256":"97dfa2f26cfd3a463a376fd5ee55bcbde1eca3a64aae824736a17fcf64eeb6f7","abstract_canon_sha256":"d1668bf6e85d73c722de2c3bc348048f1933298bcec67723489175388d7851df"},"schema_version":"1.0"},"canonical_sha256":"224e7bb9dde3646992e53ce4c33a1a26ef3e564c8d828be17faece550414b60a","source":{"kind":"arxiv","id":"1208.3664","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.3664","created_at":"2026-05-18T03:43:28Z"},{"alias_kind":"arxiv_version","alias_value":"1208.3664v1","created_at":"2026-05-18T03:43:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.3664","created_at":"2026-05-18T03:43:28Z"},{"alias_kind":"pith_short_12","alias_value":"EJHHXOO54NSG","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"EJHHXOO54NSGTEXF","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"EJHHXOO5","created_at":"2026-05-18T12:27:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:EJHHXOO54NSGTEXFHTSMGOQ2E3","target":"record","payload":{"canonical_record":{"source":{"id":"1208.3664","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-17T19:41:15Z","cross_cats_sorted":[],"title_canon_sha256":"97dfa2f26cfd3a463a376fd5ee55bcbde1eca3a64aae824736a17fcf64eeb6f7","abstract_canon_sha256":"d1668bf6e85d73c722de2c3bc348048f1933298bcec67723489175388d7851df"},"schema_version":"1.0"},"canonical_sha256":"224e7bb9dde3646992e53ce4c33a1a26ef3e564c8d828be17faece550414b60a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:43:28.329463Z","signature_b64":"dMqqmsPWNqRR2EKPDuapNf+MvxOBpvzC3qz0Y/JfMo5IPBGP/ufmZgt3WJKAhsNrvO5IiaYL4MR5UYnl7+pEBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"224e7bb9dde3646992e53ce4c33a1a26ef3e564c8d828be17faece550414b60a","last_reissued_at":"2026-05-18T03:43:28.328815Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:43:28.328815Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.3664","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":"2026-05-18T03:43:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YYa/1JP8ADf4uFTC7OwMAd5duttREwAizNK1DLKYTaVgB1z6tA+EJirFUWK31SoZY5BXNwAv0T4R3JlOK/tbCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:27:08.565767Z"},"content_sha256":"3718b20d8f22f2a6a2c89f323c75896185ea0117b6c9df1d3bbf3649a51d5db8","schema_version":"1.0","event_id":"sha256:3718b20d8f22f2a6a2c89f323c75896185ea0117b6c9df1d3bbf3649a51d5db8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:EJHHXOO54NSGTEXFHTSMGOQ2E3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effect of nanostructuration on compressibility of cubic BN","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"G. Garbarino, M. Mezouar, O. O. Kurakevych, P. Munsch, V. L. Solozhenko, Y. Le Godec","submitted_at":"2012-08-17T19:41:15Z","abstract_excerpt":"Compressibility of high-purity nanostructured cBN has been studied under quasi-hydrostatic conditions at 300 K up to 35 GPa using diamond anvil cell and angle-dispersive synchrotron X-ray powder diffraction. A data fit to the Vinet equation of state yields the values of the bulk modulus B0 of 375(4) GPa with its first pressure derivative B0' of 2.3(3). The nanometer grain size (\\sim20 nm) results in decrease of the bulk modulus by ~9%."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.3664","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":"2026-05-18T03:43:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9tR0sHUlShhXYXNLfsVmLhDOiWUlFZ1wMV2vLwNQxjoyB2Je5J3ulq+dr398RsIkw3hxzy0FaA5P6OixYRgqCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:27:08.566490Z"},"content_sha256":"80d2864194d13f61775f4bcb6cde6077f12a7aa4cff3ba014cbe94da5c662594","schema_version":"1.0","event_id":"sha256:80d2864194d13f61775f4bcb6cde6077f12a7aa4cff3ba014cbe94da5c662594"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EJHHXOO54NSGTEXFHTSMGOQ2E3/bundle.json","state_url":"https://pith.science/pith/EJHHXOO54NSGTEXFHTSMGOQ2E3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EJHHXOO54NSGTEXFHTSMGOQ2E3/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":"2026-05-25T15:27:08Z","links":{"resolver":"https://pith.science/pith/EJHHXOO54NSGTEXFHTSMGOQ2E3","bundle":"https://pith.science/pith/EJHHXOO54NSGTEXFHTSMGOQ2E3/bundle.json","state":"https://pith.science/pith/EJHHXOO54NSGTEXFHTSMGOQ2E3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EJHHXOO54NSGTEXFHTSMGOQ2E3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:EJHHXOO54NSGTEXFHTSMGOQ2E3","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":"d1668bf6e85d73c722de2c3bc348048f1933298bcec67723489175388d7851df","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-17T19:41:15Z","title_canon_sha256":"97dfa2f26cfd3a463a376fd5ee55bcbde1eca3a64aae824736a17fcf64eeb6f7"},"schema_version":"1.0","source":{"id":"1208.3664","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.3664","created_at":"2026-05-18T03:43:28Z"},{"alias_kind":"arxiv_version","alias_value":"1208.3664v1","created_at":"2026-05-18T03:43:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.3664","created_at":"2026-05-18T03:43:28Z"},{"alias_kind":"pith_short_12","alias_value":"EJHHXOO54NSG","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"EJHHXOO54NSGTEXF","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"EJHHXOO5","created_at":"2026-05-18T12:27:04Z"}],"graph_snapshots":[{"event_id":"sha256:80d2864194d13f61775f4bcb6cde6077f12a7aa4cff3ba014cbe94da5c662594","target":"graph","created_at":"2026-05-18T03:43:28Z","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":"Compressibility of high-purity nanostructured cBN has been studied under quasi-hydrostatic conditions at 300 K up to 35 GPa using diamond anvil cell and angle-dispersive synchrotron X-ray powder diffraction. A data fit to the Vinet equation of state yields the values of the bulk modulus B0 of 375(4) GPa with its first pressure derivative B0' of 2.3(3). The nanometer grain size (\\sim20 nm) results in decrease of the bulk modulus by ~9%.","authors_text":"G. Garbarino, M. Mezouar, O. O. Kurakevych, P. Munsch, V. L. Solozhenko, Y. Le Godec","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-17T19:41:15Z","title":"Effect of nanostructuration on compressibility of cubic BN"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.3664","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":"sha256:3718b20d8f22f2a6a2c89f323c75896185ea0117b6c9df1d3bbf3649a51d5db8","target":"record","created_at":"2026-05-18T03:43:28Z","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":"d1668bf6e85d73c722de2c3bc348048f1933298bcec67723489175388d7851df","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-17T19:41:15Z","title_canon_sha256":"97dfa2f26cfd3a463a376fd5ee55bcbde1eca3a64aae824736a17fcf64eeb6f7"},"schema_version":"1.0","source":{"id":"1208.3664","kind":"arxiv","version":1}},"canonical_sha256":"224e7bb9dde3646992e53ce4c33a1a26ef3e564c8d828be17faece550414b60a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"224e7bb9dde3646992e53ce4c33a1a26ef3e564c8d828be17faece550414b60a","first_computed_at":"2026-05-18T03:43:28.328815Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:43:28.328815Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dMqqmsPWNqRR2EKPDuapNf+MvxOBpvzC3qz0Y/JfMo5IPBGP/ufmZgt3WJKAhsNrvO5IiaYL4MR5UYnl7+pEBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:43:28.329463Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.3664","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3718b20d8f22f2a6a2c89f323c75896185ea0117b6c9df1d3bbf3649a51d5db8","sha256:80d2864194d13f61775f4bcb6cde6077f12a7aa4cff3ba014cbe94da5c662594"],"state_sha256":"defa3e347193b0ba29aa724d508f7e437ec90dd88ce117b49060a031d4436028"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HNuxnSgylBECCp2YNOB9dr2S+8ybpzH8jEV6QdQ5WDLgLxZD7TJuJ2lsavb7BYGAAue0e+kGqQ9OK5irL4ECDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T15:27:08.570300Z","bundle_sha256":"5e897f94270ed6fdadf751a6ed7107f2e94a272b83ec941d8642fc0b03d99964"}}