{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:HIQW5WHJWM65EAX75GQJJM26MZ","short_pith_number":"pith:HIQW5WHJ","canonical_record":{"source":{"id":"1901.02876","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-01-09T18:58:01Z","cross_cats_sorted":[],"title_canon_sha256":"7bb9073ae56c5deef9c226f8193dd7a3352ac120791f2267d975eb2b884b8788","abstract_canon_sha256":"ecf4bf1c7ee73fa71f390d8f9755b1e96688c1e702248f445ac390eac25232bd"},"schema_version":"1.0"},"canonical_sha256":"3a216ed8e9b33dd202ffe9a094b35e667a0383ffc7c225633baebe1cb05ec3e4","source":{"kind":"arxiv","id":"1901.02876","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.02876","created_at":"2026-05-17T23:56:39Z"},{"alias_kind":"arxiv_version","alias_value":"1901.02876v1","created_at":"2026-05-17T23:56:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.02876","created_at":"2026-05-17T23:56:39Z"},{"alias_kind":"pith_short_12","alias_value":"HIQW5WHJWM65","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"HIQW5WHJWM65EAX7","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"HIQW5WHJ","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:HIQW5WHJWM65EAX75GQJJM26MZ","target":"record","payload":{"canonical_record":{"source":{"id":"1901.02876","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-01-09T18:58:01Z","cross_cats_sorted":[],"title_canon_sha256":"7bb9073ae56c5deef9c226f8193dd7a3352ac120791f2267d975eb2b884b8788","abstract_canon_sha256":"ecf4bf1c7ee73fa71f390d8f9755b1e96688c1e702248f445ac390eac25232bd"},"schema_version":"1.0"},"canonical_sha256":"3a216ed8e9b33dd202ffe9a094b35e667a0383ffc7c225633baebe1cb05ec3e4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:39.302627Z","signature_b64":"abKLJo7gJX8n/XYNuDOvuZld0MwqFt/oh6+kSgB8STBr5z7DWWsvFWwln4+N5a4lcdlv6TER6Ld98/ElZUsRBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3a216ed8e9b33dd202ffe9a094b35e667a0383ffc7c225633baebe1cb05ec3e4","last_reissued_at":"2026-05-17T23:56:39.302073Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:39.302073Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.02876","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":"2026-05-17T23:56:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7domwrgOu45+Ms3KcARmbfdK5j135wNyo/sm/VgqfpxXFSW+TxWkoN3oxhJ71XmqPUXngcFZDZTBTrVu0lk8Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T13:48:55.354654Z"},"content_sha256":"89120770e395334cc225d0b08443f1be3aaa533c57cd6e3b58dbef030ea14cf3","schema_version":"1.0","event_id":"sha256:89120770e395334cc225d0b08443f1be3aaa533c57cd6e3b58dbef030ea14cf3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:HIQW5WHJWM65EAX75GQJJM26MZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Anisotropic magnetic entropy change in Cr$_2$X$_2$Te$_6$ (X = Si and Ge)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"C. Petrovic, Yu Liu","submitted_at":"2019-01-09T18:58:01Z","abstract_excerpt":"Intrinsic, two-dimensional (2D) ferromagnetic semiconductors are an important class of materials for spintronics applications. Cr$_2$X$_2$Te$_6$ (X = Si and Ge) semiconductors show 2D Ising-like ferromagnetism, which is preserved in few-layer devices. The maximum magnetic entropy change associated with the critical properties around the ferromagnetic transition for Cr$_2$Si$_2$Te$_6$ $-\\Delta S_M^{max} \\sim$ 5.05 J kg$^{-1}$ K$^{-1}$ is much larger than $-\\Delta S_M^{max} \\sim$ 2.64 J kg$^{-1}$ K$^{-1}$ for Cr$_2$Ge$_2$Te$_6$ with an out-of-plane field change of 5 T. The rescaled $-\\Delta S_M("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.02876","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":"2026-05-17T23:56:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O53u8+Vb2J7W4lgsye8CqoKIrjvsvijS99AMRVSQ8IaLwUtHZj0GhZlTPtaRt0SpmQPaLFM6Wb1wa+Lrdf/xAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T13:48:55.355396Z"},"content_sha256":"c6b0d31180ef5a05c7bb17da4748e4fb1cefed515e45e9e6750a23af7b963925","schema_version":"1.0","event_id":"sha256:c6b0d31180ef5a05c7bb17da4748e4fb1cefed515e45e9e6750a23af7b963925"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HIQW5WHJWM65EAX75GQJJM26MZ/bundle.json","state_url":"https://pith.science/pith/HIQW5WHJWM65EAX75GQJJM26MZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HIQW5WHJWM65EAX75GQJJM26MZ/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":"2026-08-04T13:48:55Z","links":{"resolver":"https://pith.science/pith/HIQW5WHJWM65EAX75GQJJM26MZ","bundle":"https://pith.science/pith/HIQW5WHJWM65EAX75GQJJM26MZ/bundle.json","state":"https://pith.science/pith/HIQW5WHJWM65EAX75GQJJM26MZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HIQW5WHJWM65EAX75GQJJM26MZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:HIQW5WHJWM65EAX75GQJJM26MZ","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":"ecf4bf1c7ee73fa71f390d8f9755b1e96688c1e702248f445ac390eac25232bd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-01-09T18:58:01Z","title_canon_sha256":"7bb9073ae56c5deef9c226f8193dd7a3352ac120791f2267d975eb2b884b8788"},"schema_version":"1.0","source":{"id":"1901.02876","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.02876","created_at":"2026-05-17T23:56:39Z"},{"alias_kind":"arxiv_version","alias_value":"1901.02876v1","created_at":"2026-05-17T23:56:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.02876","created_at":"2026-05-17T23:56:39Z"},{"alias_kind":"pith_short_12","alias_value":"HIQW5WHJWM65","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"HIQW5WHJWM65EAX7","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"HIQW5WHJ","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:c6b0d31180ef5a05c7bb17da4748e4fb1cefed515e45e9e6750a23af7b963925","target":"graph","created_at":"2026-05-17T23:56:39Z","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":"Intrinsic, two-dimensional (2D) ferromagnetic semiconductors are an important class of materials for spintronics applications. Cr$_2$X$_2$Te$_6$ (X = Si and Ge) semiconductors show 2D Ising-like ferromagnetism, which is preserved in few-layer devices. The maximum magnetic entropy change associated with the critical properties around the ferromagnetic transition for Cr$_2$Si$_2$Te$_6$ $-\\Delta S_M^{max} \\sim$ 5.05 J kg$^{-1}$ K$^{-1}$ is much larger than $-\\Delta S_M^{max} \\sim$ 2.64 J kg$^{-1}$ K$^{-1}$ for Cr$_2$Ge$_2$Te$_6$ with an out-of-plane field change of 5 T. The rescaled $-\\Delta S_M(","authors_text":"C. Petrovic, Yu Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-01-09T18:58:01Z","title":"Anisotropic magnetic entropy change in Cr$_2$X$_2$Te$_6$ (X = Si and Ge)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.02876","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":"sha256:89120770e395334cc225d0b08443f1be3aaa533c57cd6e3b58dbef030ea14cf3","target":"record","created_at":"2026-05-17T23:56:39Z","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":"ecf4bf1c7ee73fa71f390d8f9755b1e96688c1e702248f445ac390eac25232bd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-01-09T18:58:01Z","title_canon_sha256":"7bb9073ae56c5deef9c226f8193dd7a3352ac120791f2267d975eb2b884b8788"},"schema_version":"1.0","source":{"id":"1901.02876","kind":"arxiv","version":1}},"canonical_sha256":"3a216ed8e9b33dd202ffe9a094b35e667a0383ffc7c225633baebe1cb05ec3e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3a216ed8e9b33dd202ffe9a094b35e667a0383ffc7c225633baebe1cb05ec3e4","first_computed_at":"2026-05-17T23:56:39.302073Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:39.302073Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"abKLJo7gJX8n/XYNuDOvuZld0MwqFt/oh6+kSgB8STBr5z7DWWsvFWwln4+N5a4lcdlv6TER6Ld98/ElZUsRBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:39.302627Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.02876","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:89120770e395334cc225d0b08443f1be3aaa533c57cd6e3b58dbef030ea14cf3","sha256:c6b0d31180ef5a05c7bb17da4748e4fb1cefed515e45e9e6750a23af7b963925"],"state_sha256":"87d29ba84b97d5e9e8b3a847335b9d596a9100d683cc07d3d3705d18f8304910"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CjtJMpSaUo7z3lMN5BEZKe9bFD2XAF2BNQ872OaDjfxY17sxyCAJUiIHFR6Ac2c0YoxssEY/bpLrXSyZJykxDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T13:48:55.392177Z","bundle_sha256":"cf4a4e5564cbc899e568dfd85a6e1aec480fbc45f2ecb384ab1863fff67e4ab8"}}