{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:MDIQLDZRV6VRCBXHNA6HF32SK6","short_pith_number":"pith:MDIQLDZR","canonical_record":{"source":{"id":"1304.4789","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-04-17T12:20:45Z","cross_cats_sorted":[],"title_canon_sha256":"93e9dd02c1ac37537e331d51996f3742beefa9c413b9d1dd4829fe8b0508e21c","abstract_canon_sha256":"5c91382094445f98746fe5d91c8fac1b956882a5839b0fbba6d85fafddde890d"},"schema_version":"1.0"},"canonical_sha256":"60d1058f31afab1106e7683c72ef52579311345469c6f3a52f1ddc19234788f5","source":{"kind":"arxiv","id":"1304.4789","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.4789","created_at":"2026-05-18T02:48:43Z"},{"alias_kind":"arxiv_version","alias_value":"1304.4789v2","created_at":"2026-05-18T02:48:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.4789","created_at":"2026-05-18T02:48:43Z"},{"alias_kind":"pith_short_12","alias_value":"MDIQLDZRV6VR","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"MDIQLDZRV6VRCBXH","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"MDIQLDZR","created_at":"2026-05-18T12:27:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:MDIQLDZRV6VRCBXHNA6HF32SK6","target":"record","payload":{"canonical_record":{"source":{"id":"1304.4789","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-04-17T12:20:45Z","cross_cats_sorted":[],"title_canon_sha256":"93e9dd02c1ac37537e331d51996f3742beefa9c413b9d1dd4829fe8b0508e21c","abstract_canon_sha256":"5c91382094445f98746fe5d91c8fac1b956882a5839b0fbba6d85fafddde890d"},"schema_version":"1.0"},"canonical_sha256":"60d1058f31afab1106e7683c72ef52579311345469c6f3a52f1ddc19234788f5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:48:43.559556Z","signature_b64":"G2YjO5X8M3BAfcNSNbglhFm9i10cS4Qva+rP7ZvNHYMYfKqwG28doi1ZVnyfdRn+uIjAdrESUxtQTkACCa7BAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"60d1058f31afab1106e7683c72ef52579311345469c6f3a52f1ddc19234788f5","last_reissued_at":"2026-05-18T02:48:43.558877Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:48:43.558877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.4789","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:48:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QijcOsaF8/7SYoudCirKL1Ew15BZ7opyv2GqOdprDKoqGtZH4pjqFHTu39kC9nxG/a6z3sE0ebXb2vi0FNpvAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T03:41:30.850102Z"},"content_sha256":"bf214f5cd8e8f77a7cf75db32d1a09f2421b530737737dc057b339b13f982db2","schema_version":"1.0","event_id":"sha256:bf214f5cd8e8f77a7cf75db32d1a09f2421b530737737dc057b339b13f982db2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:MDIQLDZRV6VRCBXHNA6HF32SK6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simulation study of pressure and temperature dependence of the negative thermal expansion in Zn(CN)$_2$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alston J. Misquitta, Hong Fang, Leila H. N. Rimmer, Martin T. Dove","submitted_at":"2013-04-17T12:20:45Z","abstract_excerpt":"Pressure and temperature dependence of the negative thermal expansion in Zn(CN)$_2$ is fully investigated using molecular dynamics simulations with a built potential model. The advantage of this study allows us to reproduce all the exotic behaviours of the material, including the negative thermal expansion (NTE), the reduction of NTE with elevated temperature, the pressure enhancement of NTE and the pressure-induced softening. Results of the study provide us detailed data to link the properties in the energy space and the real space, giving us insights to understand the properties and the conn"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.4789","kind":"arxiv","version":2},"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":"2026-05-18T02:48:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hRudEQoKqNS/VolSC2TBpaFYKn8Vh8ikf6q3KCtmPBMMuplffnMeWJ8rjWFdo9uGX3T4d1/RU322lqCVp9BjBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T03:41:30.850515Z"},"content_sha256":"d609a514262c10a0e0c34039dfcf3b0cb7ccdbfd2cdb64872b6f23448a9a25bc","schema_version":"1.0","event_id":"sha256:d609a514262c10a0e0c34039dfcf3b0cb7ccdbfd2cdb64872b6f23448a9a25bc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MDIQLDZRV6VRCBXHNA6HF32SK6/bundle.json","state_url":"https://pith.science/pith/MDIQLDZRV6VRCBXHNA6HF32SK6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MDIQLDZRV6VRCBXHNA6HF32SK6/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":"2026-06-03T03:41:30Z","links":{"resolver":"https://pith.science/pith/MDIQLDZRV6VRCBXHNA6HF32SK6","bundle":"https://pith.science/pith/MDIQLDZRV6VRCBXHNA6HF32SK6/bundle.json","state":"https://pith.science/pith/MDIQLDZRV6VRCBXHNA6HF32SK6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MDIQLDZRV6VRCBXHNA6HF32SK6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:MDIQLDZRV6VRCBXHNA6HF32SK6","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":"5c91382094445f98746fe5d91c8fac1b956882a5839b0fbba6d85fafddde890d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-04-17T12:20:45Z","title_canon_sha256":"93e9dd02c1ac37537e331d51996f3742beefa9c413b9d1dd4829fe8b0508e21c"},"schema_version":"1.0","source":{"id":"1304.4789","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.4789","created_at":"2026-05-18T02:48:43Z"},{"alias_kind":"arxiv_version","alias_value":"1304.4789v2","created_at":"2026-05-18T02:48:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.4789","created_at":"2026-05-18T02:48:43Z"},{"alias_kind":"pith_short_12","alias_value":"MDIQLDZRV6VR","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"MDIQLDZRV6VRCBXH","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"MDIQLDZR","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:d609a514262c10a0e0c34039dfcf3b0cb7ccdbfd2cdb64872b6f23448a9a25bc","target":"graph","created_at":"2026-05-18T02:48:43Z","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":"Pressure and temperature dependence of the negative thermal expansion in Zn(CN)$_2$ is fully investigated using molecular dynamics simulations with a built potential model. The advantage of this study allows us to reproduce all the exotic behaviours of the material, including the negative thermal expansion (NTE), the reduction of NTE with elevated temperature, the pressure enhancement of NTE and the pressure-induced softening. Results of the study provide us detailed data to link the properties in the energy space and the real space, giving us insights to understand the properties and the conn","authors_text":"Alston J. Misquitta, Hong Fang, Leila H. N. Rimmer, Martin T. Dove","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-04-17T12:20:45Z","title":"Simulation study of pressure and temperature dependence of the negative thermal expansion in Zn(CN)$_2$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.4789","kind":"arxiv","version":2},"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:bf214f5cd8e8f77a7cf75db32d1a09f2421b530737737dc057b339b13f982db2","target":"record","created_at":"2026-05-18T02:48:43Z","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":"5c91382094445f98746fe5d91c8fac1b956882a5839b0fbba6d85fafddde890d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-04-17T12:20:45Z","title_canon_sha256":"93e9dd02c1ac37537e331d51996f3742beefa9c413b9d1dd4829fe8b0508e21c"},"schema_version":"1.0","source":{"id":"1304.4789","kind":"arxiv","version":2}},"canonical_sha256":"60d1058f31afab1106e7683c72ef52579311345469c6f3a52f1ddc19234788f5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"60d1058f31afab1106e7683c72ef52579311345469c6f3a52f1ddc19234788f5","first_computed_at":"2026-05-18T02:48:43.558877Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:48:43.558877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G2YjO5X8M3BAfcNSNbglhFm9i10cS4Qva+rP7ZvNHYMYfKqwG28doi1ZVnyfdRn+uIjAdrESUxtQTkACCa7BAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:48:43.559556Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.4789","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf214f5cd8e8f77a7cf75db32d1a09f2421b530737737dc057b339b13f982db2","sha256:d609a514262c10a0e0c34039dfcf3b0cb7ccdbfd2cdb64872b6f23448a9a25bc"],"state_sha256":"87020c41b9f188cb5deea2925de5464e5853434ca46cc4c8bc20119e56a6a2cc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U4jbeo2hn6XV41pGQS963Z+d3nr7wvJ037l2RnM0NsCHwv5GuHBqnd3SQLmnLyv/A6EbvWn+W/7NzARiWGXUDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T03:41:30.852573Z","bundle_sha256":"0b719bef1bf7fd6386b39633ab088ca37cc99dff8e3e26813bcef766aa9d0d59"}}