{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:SWQNAKXHM4WFNQN36324JWCB5A","short_pith_number":"pith:SWQNAKXH","canonical_record":{"source":{"id":"2009.10000","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-09-21T16:27:38Z","cross_cats_sorted":[],"title_canon_sha256":"9ef9deca2469351410eaf61bf9e84fc75ac878b69bd9e255596c77ec81af8775","abstract_canon_sha256":"eb150b4814b55f82adc56f2e008fc517987f8bd29811f7df5665a056e8dbebac"},"schema_version":"1.0"},"canonical_sha256":"95a0d02ae7672c56c1bbf6f5c4d841e82e8e1e895391f7d97d47fe92a937e6b0","source":{"kind":"arxiv","id":"2009.10000","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.10000","created_at":"2026-07-05T06:00:50Z"},{"alias_kind":"arxiv_version","alias_value":"2009.10000v2","created_at":"2026-07-05T06:00:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.10000","created_at":"2026-07-05T06:00:50Z"},{"alias_kind":"pith_short_12","alias_value":"SWQNAKXHM4WF","created_at":"2026-07-05T06:00:50Z"},{"alias_kind":"pith_short_16","alias_value":"SWQNAKXHM4WFNQN3","created_at":"2026-07-05T06:00:50Z"},{"alias_kind":"pith_short_8","alias_value":"SWQNAKXH","created_at":"2026-07-05T06:00:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:SWQNAKXHM4WFNQN36324JWCB5A","target":"record","payload":{"canonical_record":{"source":{"id":"2009.10000","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-09-21T16:27:38Z","cross_cats_sorted":[],"title_canon_sha256":"9ef9deca2469351410eaf61bf9e84fc75ac878b69bd9e255596c77ec81af8775","abstract_canon_sha256":"eb150b4814b55f82adc56f2e008fc517987f8bd29811f7df5665a056e8dbebac"},"schema_version":"1.0"},"canonical_sha256":"95a0d02ae7672c56c1bbf6f5c4d841e82e8e1e895391f7d97d47fe92a937e6b0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:00:50.317539Z","signature_b64":"48b68nFt/zm8Rk71jNqKjXMI5UAT9t4UlmDx/OtX7grjdSbScF0ClVvEFdre+npA1APgKhvdO3SIOgWYql4sDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"95a0d02ae7672c56c1bbf6f5c4d841e82e8e1e895391f7d97d47fe92a937e6b0","last_reissued_at":"2026-07-05T06:00:50.317136Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:00:50.317136Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.10000","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":"2026-07-05T06:00:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0LBJJTkOD4L+MPRJ70+Rdc5kLHrHIi3HamNs1rkftxnbp4lw6oPLRCQFFHZcI6HFUd9Old8dDmovyJaDDa65Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T18:04:35.779232Z"},"content_sha256":"dcde487baa9bf8c8124b80a81fc056088af9775f3c4200afe92af62d2d9102dd","schema_version":"1.0","event_id":"sha256:dcde487baa9bf8c8124b80a81fc056088af9775f3c4200afe92af62d2d9102dd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:SWQNAKXHM4WFNQN36324JWCB5A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ab initio Determination of Phase Stabilities of Dynamically Disordered Solids: rotational C2 disorder in Li2C2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Johan Klarbring, Sergei I. Simak, Stanislav Filippov, Ulrich H\\\"aussermann","submitted_at":"2020-09-21T16:27:38Z","abstract_excerpt":"The temperature-induced orthorhombic to cubic phase transition in Li2C2 is a prototypical example of a solid to solid phase transformation between an ordered phase, which is well described within the phonon theory, and a dynamically disordered phase with rotating molecules, for which the standard phonon theory is not applicable. The transformation in Li2C2 happens from a phase with directionally ordered C2 dimers to a structure, where they are dynamically disorderd. We provide a description of this transition by employing ab initio molecular dynamics (AIMD) based stress-strain thermodynamic in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.10000","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2009.10000/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":"2026-07-05T06:00:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GOW3rvwL/rlm/frAbzFRehMmlVEkwRb6DEZDKkAj0UeI5x/ZIYM5XbTrSiOFDjxClT8yeIu+znvlkP4lwJpcCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T18:04:35.779549Z"},"content_sha256":"d4ec1a9d683d7e0952b4000258c612977353c17440e3a011da3a43c46c3b1ba9","schema_version":"1.0","event_id":"sha256:d4ec1a9d683d7e0952b4000258c612977353c17440e3a011da3a43c46c3b1ba9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SWQNAKXHM4WFNQN36324JWCB5A/bundle.json","state_url":"https://pith.science/pith/SWQNAKXHM4WFNQN36324JWCB5A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SWQNAKXHM4WFNQN36324JWCB5A/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":"2026-08-05T18:04:35Z","links":{"resolver":"https://pith.science/pith/SWQNAKXHM4WFNQN36324JWCB5A","bundle":"https://pith.science/pith/SWQNAKXHM4WFNQN36324JWCB5A/bundle.json","state":"https://pith.science/pith/SWQNAKXHM4WFNQN36324JWCB5A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SWQNAKXHM4WFNQN36324JWCB5A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:SWQNAKXHM4WFNQN36324JWCB5A","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":"eb150b4814b55f82adc56f2e008fc517987f8bd29811f7df5665a056e8dbebac","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-09-21T16:27:38Z","title_canon_sha256":"9ef9deca2469351410eaf61bf9e84fc75ac878b69bd9e255596c77ec81af8775"},"schema_version":"1.0","source":{"id":"2009.10000","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.10000","created_at":"2026-07-05T06:00:50Z"},{"alias_kind":"arxiv_version","alias_value":"2009.10000v2","created_at":"2026-07-05T06:00:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.10000","created_at":"2026-07-05T06:00:50Z"},{"alias_kind":"pith_short_12","alias_value":"SWQNAKXHM4WF","created_at":"2026-07-05T06:00:50Z"},{"alias_kind":"pith_short_16","alias_value":"SWQNAKXHM4WFNQN3","created_at":"2026-07-05T06:00:50Z"},{"alias_kind":"pith_short_8","alias_value":"SWQNAKXH","created_at":"2026-07-05T06:00:50Z"}],"graph_snapshots":[{"event_id":"sha256:d4ec1a9d683d7e0952b4000258c612977353c17440e3a011da3a43c46c3b1ba9","target":"graph","created_at":"2026-07-05T06:00:50Z","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/2009.10000/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The temperature-induced orthorhombic to cubic phase transition in Li2C2 is a prototypical example of a solid to solid phase transformation between an ordered phase, which is well described within the phonon theory, and a dynamically disordered phase with rotating molecules, for which the standard phonon theory is not applicable. The transformation in Li2C2 happens from a phase with directionally ordered C2 dimers to a structure, where they are dynamically disorderd. We provide a description of this transition by employing ab initio molecular dynamics (AIMD) based stress-strain thermodynamic in","authors_text":"Johan Klarbring, Sergei I. Simak, Stanislav Filippov, Ulrich H\\\"aussermann","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-09-21T16:27:38Z","title":"Ab initio Determination of Phase Stabilities of Dynamically Disordered Solids: rotational C2 disorder in Li2C2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.10000","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:dcde487baa9bf8c8124b80a81fc056088af9775f3c4200afe92af62d2d9102dd","target":"record","created_at":"2026-07-05T06:00:50Z","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":"eb150b4814b55f82adc56f2e008fc517987f8bd29811f7df5665a056e8dbebac","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-09-21T16:27:38Z","title_canon_sha256":"9ef9deca2469351410eaf61bf9e84fc75ac878b69bd9e255596c77ec81af8775"},"schema_version":"1.0","source":{"id":"2009.10000","kind":"arxiv","version":2}},"canonical_sha256":"95a0d02ae7672c56c1bbf6f5c4d841e82e8e1e895391f7d97d47fe92a937e6b0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"95a0d02ae7672c56c1bbf6f5c4d841e82e8e1e895391f7d97d47fe92a937e6b0","first_computed_at":"2026-07-05T06:00:50.317136Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:00:50.317136Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"48b68nFt/zm8Rk71jNqKjXMI5UAT9t4UlmDx/OtX7grjdSbScF0ClVvEFdre+npA1APgKhvdO3SIOgWYql4sDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:00:50.317539Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.10000","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dcde487baa9bf8c8124b80a81fc056088af9775f3c4200afe92af62d2d9102dd","sha256:d4ec1a9d683d7e0952b4000258c612977353c17440e3a011da3a43c46c3b1ba9"],"state_sha256":"5c090f4d2fd66a7e733a23f1818ac718198aef4c5fb70d616786608faa591526"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x5wVfR3Ylxrkw23Ckg77aX1RQOfapnDsMjuuM0U26UE7gRjC2SFqGZnDXbpWq93YsmVuyKeRr014tXZqXOYxDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T18:04:35.782636Z","bundle_sha256":"86254732e9781ce0f7ff027678a61fe212b9070218c9a6137da5a60a4a56494c"}}