{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:AV2GWRU5MO5HOXSGR44OEK54J5","short_pith_number":"pith:AV2GWRU5","canonical_record":{"source":{"id":"1210.7571","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-10-29T05:57:14Z","cross_cats_sorted":[],"title_canon_sha256":"98507b6af3fcd480e4dd5c113fd835353680dee7b4cbb7cc235a85ad472da6b4","abstract_canon_sha256":"293630d06261a194a19f69cee161c06ddeba6e7a929215666c8f1b14b79ab2d1"},"schema_version":"1.0"},"canonical_sha256":"05746b469d63ba775e468f38e22bbc4f5092dbd5b1a85ea43e2c7e16b3bf48cd","source":{"kind":"arxiv","id":"1210.7571","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.7571","created_at":"2026-05-18T01:53:36Z"},{"alias_kind":"arxiv_version","alias_value":"1210.7571v1","created_at":"2026-05-18T01:53:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.7571","created_at":"2026-05-18T01:53:36Z"},{"alias_kind":"pith_short_12","alias_value":"AV2GWRU5MO5H","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"AV2GWRU5MO5HOXSG","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"AV2GWRU5","created_at":"2026-05-18T12:26:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:AV2GWRU5MO5HOXSGR44OEK54J5","target":"record","payload":{"canonical_record":{"source":{"id":"1210.7571","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-10-29T05:57:14Z","cross_cats_sorted":[],"title_canon_sha256":"98507b6af3fcd480e4dd5c113fd835353680dee7b4cbb7cc235a85ad472da6b4","abstract_canon_sha256":"293630d06261a194a19f69cee161c06ddeba6e7a929215666c8f1b14b79ab2d1"},"schema_version":"1.0"},"canonical_sha256":"05746b469d63ba775e468f38e22bbc4f5092dbd5b1a85ea43e2c7e16b3bf48cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:36.494104Z","signature_b64":"dd7gbIuYunJOiNfXfq95C175nJGTCmAt44bF9kyg4QvqoWcWq5+b5FPIV70Uqzq1WnSPuspJIFtZAAdN/9J8CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"05746b469d63ba775e468f38e22bbc4f5092dbd5b1a85ea43e2c7e16b3bf48cd","last_reissued_at":"2026-05-18T01:53:36.493660Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:36.493660Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.7571","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":"2026-05-18T01:53:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2Vg6TP9JjU4sfIcJ9bG6AC4rzq4nwOMrkBM3Tx6+wuU1f4DUhtfFHgk9UFvy6Pjvqm2ZaDbfD3NITJyHvO0+Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:02:24.435379Z"},"content_sha256":"06eafc4a3a416b66d6aa36a5e2d5af4b2947ffc9f1459a692eb30449e3adcc7b","schema_version":"1.0","event_id":"sha256:06eafc4a3a416b66d6aa36a5e2d5af4b2947ffc9f1459a692eb30449e3adcc7b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:AV2GWRU5MO5HOXSGR44OEK54J5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Continuous magnetic phase transition in half-frustrated Ca2Os2O7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"B. Cheng, G. Xu, J. L. Luo, K. Yamaura, N. L. Wang, P. Zheng, Q. S. Wu, R. H. Yuan, T. Dong, Y. G. Shi, Z. G. Chen","submitted_at":"2012-10-29T05:57:14Z","abstract_excerpt":"We present the specific heat, magnetization, optical spectroscopy measurements and the firstprinciple calculations on the Weberite structure Ca2Os2O7 single crystal/polycrystalline sample. The Ca2Os2O7 shows a Curie-Weiss nature at high temperature and goes into a ferrimagnetic insulating state at 327 K on cooling. A \\lambda-like peak is observed at 327 K in the specific heat implying a second-order phase transition. The vanishing electronic specific heat at low temperature suggests a full energy gap. At high temperature above the transition, small amount of itinerant carriers with short life "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.7571","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":"2026-05-18T01:53:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kXixg8Pu2PLTbEudUnoDpqFEYR/WSYiUmhi81lnSiTT0RIXjqUUVDKyneKLoGnuKeZ/1XXKKfSAUgkm/Fz+DAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:02:24.436085Z"},"content_sha256":"743098090449268f9ce3df3e2bd3421716d4f6516a4f3973bc6b2287308ce538","schema_version":"1.0","event_id":"sha256:743098090449268f9ce3df3e2bd3421716d4f6516a4f3973bc6b2287308ce538"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AV2GWRU5MO5HOXSGR44OEK54J5/bundle.json","state_url":"https://pith.science/pith/AV2GWRU5MO5HOXSGR44OEK54J5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AV2GWRU5MO5HOXSGR44OEK54J5/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":"2026-05-26T04:02:24Z","links":{"resolver":"https://pith.science/pith/AV2GWRU5MO5HOXSGR44OEK54J5","bundle":"https://pith.science/pith/AV2GWRU5MO5HOXSGR44OEK54J5/bundle.json","state":"https://pith.science/pith/AV2GWRU5MO5HOXSGR44OEK54J5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AV2GWRU5MO5HOXSGR44OEK54J5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:AV2GWRU5MO5HOXSGR44OEK54J5","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":"293630d06261a194a19f69cee161c06ddeba6e7a929215666c8f1b14b79ab2d1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-10-29T05:57:14Z","title_canon_sha256":"98507b6af3fcd480e4dd5c113fd835353680dee7b4cbb7cc235a85ad472da6b4"},"schema_version":"1.0","source":{"id":"1210.7571","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.7571","created_at":"2026-05-18T01:53:36Z"},{"alias_kind":"arxiv_version","alias_value":"1210.7571v1","created_at":"2026-05-18T01:53:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.7571","created_at":"2026-05-18T01:53:36Z"},{"alias_kind":"pith_short_12","alias_value":"AV2GWRU5MO5H","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"AV2GWRU5MO5HOXSG","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"AV2GWRU5","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:743098090449268f9ce3df3e2bd3421716d4f6516a4f3973bc6b2287308ce538","target":"graph","created_at":"2026-05-18T01:53:36Z","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":"We present the specific heat, magnetization, optical spectroscopy measurements and the firstprinciple calculations on the Weberite structure Ca2Os2O7 single crystal/polycrystalline sample. The Ca2Os2O7 shows a Curie-Weiss nature at high temperature and goes into a ferrimagnetic insulating state at 327 K on cooling. A \\lambda-like peak is observed at 327 K in the specific heat implying a second-order phase transition. The vanishing electronic specific heat at low temperature suggests a full energy gap. At high temperature above the transition, small amount of itinerant carriers with short life ","authors_text":"B. Cheng, G. Xu, J. L. Luo, K. Yamaura, N. L. Wang, P. Zheng, Q. S. Wu, R. H. Yuan, T. Dong, Y. G. Shi, Z. G. Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-10-29T05:57:14Z","title":"Continuous magnetic phase transition in half-frustrated Ca2Os2O7"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.7571","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":"sha256:06eafc4a3a416b66d6aa36a5e2d5af4b2947ffc9f1459a692eb30449e3adcc7b","target":"record","created_at":"2026-05-18T01:53:36Z","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":"293630d06261a194a19f69cee161c06ddeba6e7a929215666c8f1b14b79ab2d1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-10-29T05:57:14Z","title_canon_sha256":"98507b6af3fcd480e4dd5c113fd835353680dee7b4cbb7cc235a85ad472da6b4"},"schema_version":"1.0","source":{"id":"1210.7571","kind":"arxiv","version":1}},"canonical_sha256":"05746b469d63ba775e468f38e22bbc4f5092dbd5b1a85ea43e2c7e16b3bf48cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"05746b469d63ba775e468f38e22bbc4f5092dbd5b1a85ea43e2c7e16b3bf48cd","first_computed_at":"2026-05-18T01:53:36.493660Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:36.493660Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dd7gbIuYunJOiNfXfq95C175nJGTCmAt44bF9kyg4QvqoWcWq5+b5FPIV70Uqzq1WnSPuspJIFtZAAdN/9J8CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:36.494104Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.7571","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:06eafc4a3a416b66d6aa36a5e2d5af4b2947ffc9f1459a692eb30449e3adcc7b","sha256:743098090449268f9ce3df3e2bd3421716d4f6516a4f3973bc6b2287308ce538"],"state_sha256":"dd5a89b520ce69fe4515f3ffac58801229c5c28a838e577e507c9b960836169a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vnjnMjPCMZdyueWRRnTn8twYhQYYfuk3ZBHiMSfwp+9rqJySBf3Ywxcz1Cr5HJJlh9JwdKKAZgEN8InfLpmhCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T04:02:24.440298Z","bundle_sha256":"3a1813e57b9b4f5a56b515822cac0f08d118c8e968196a3252fe3a7529a94e6e"}}