{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:PWG57IFAVYJDDEO2I34SA7FW6R","short_pith_number":"pith:PWG57IFA","canonical_record":{"source":{"id":"1808.02219","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-08-07T05:41:46Z","cross_cats_sorted":[],"title_canon_sha256":"91ef05050140a1034026f371219a51ac053fcb23940ab79f11e5139c299628d1","abstract_canon_sha256":"8f836955e6fc077a3771e0074380ae8255d2e2bb8efeb2e950cc764729350d80"},"schema_version":"1.0"},"canonical_sha256":"7d8ddfa0a0ae123191da46f9207cb6f468a5eecb5789723484591c0b92323b21","source":{"kind":"arxiv","id":"1808.02219","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.02219","created_at":"2026-05-18T00:08:47Z"},{"alias_kind":"arxiv_version","alias_value":"1808.02219v1","created_at":"2026-05-18T00:08:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.02219","created_at":"2026-05-18T00:08:47Z"},{"alias_kind":"pith_short_12","alias_value":"PWG57IFAVYJD","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"PWG57IFAVYJDDEO2","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"PWG57IFA","created_at":"2026-05-18T12:32:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:PWG57IFAVYJDDEO2I34SA7FW6R","target":"record","payload":{"canonical_record":{"source":{"id":"1808.02219","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-08-07T05:41:46Z","cross_cats_sorted":[],"title_canon_sha256":"91ef05050140a1034026f371219a51ac053fcb23940ab79f11e5139c299628d1","abstract_canon_sha256":"8f836955e6fc077a3771e0074380ae8255d2e2bb8efeb2e950cc764729350d80"},"schema_version":"1.0"},"canonical_sha256":"7d8ddfa0a0ae123191da46f9207cb6f468a5eecb5789723484591c0b92323b21","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:47.188634Z","signature_b64":"swVYCjiVRhsfYD10lODIPVfZo76DFuEF5g/Leaf+ULc+UAsu6lPJ0Taoc2P7O55Wq/h/O5RQ7vEqedOSYWNvBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7d8ddfa0a0ae123191da46f9207cb6f468a5eecb5789723484591c0b92323b21","last_reissued_at":"2026-05-18T00:08:47.187997Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:47.187997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.02219","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":"2026-05-18T00:08:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a+OTDaxaVpvIiVYOFpeHBl2tfOKXPUlnA9p0M0ZoA8IZOMklbbzsCl1LVSBiwZ5XvwxS/bAsYzkSvcE6+lQ8DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T07:01:01.368199Z"},"content_sha256":"4abbc1f3e91b959930ad10461c865b91a58f89873e6e92c5d9c2fe51655dfb71","schema_version":"1.0","event_id":"sha256:4abbc1f3e91b959930ad10461c865b91a58f89873e6e92c5d9c2fe51655dfb71"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:PWG57IFAVYJDDEO2I34SA7FW6R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Frustrated Magnetism of Pharmacosiderite Comprising Tetrahedral Clusters Arranged in the Primitive Cubic Lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Mikio Takano, Ryutaro Okuma, Takeshi Yajima, Tatsuo Fujii, Zenji Hiroi","submitted_at":"2018-08-07T05:41:46Z","abstract_excerpt":"We show that pharmacosiderite is a novel cluster antiferromagnet comprising frustrated regular tetrahedra made of spin-5/2 Fe3+ ions that are arranged in the primitive cubic lattice. The connectivity of the tetrahedra and the inter-cluster interaction of 2.9 K, which is significantly large compared with the intra-cluster interaction of 10.6 K, gives a unique playground for frustration physics. An unconventional antiferromagnetic order is observed below TN ~ 6 K, which is accompanied by a weak ferromagnetic moment and a large fluctuation as evidenced by Mossbauer spectroscopy. A q = 0 magnetic "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.02219","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":"2026-05-18T00:08:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FNM795AX3V5DFCTqLJXu86sswRuwYqvYWDJOvm9N991n3kQNFSQLViWZczlezo8eKKNH5ImdLfKR2VYkaKyFCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T07:01:01.368762Z"},"content_sha256":"1362c0b21745275ef1d91063b5b5fac0c2982665f21244340d0a2561acd0290c","schema_version":"1.0","event_id":"sha256:1362c0b21745275ef1d91063b5b5fac0c2982665f21244340d0a2561acd0290c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PWG57IFAVYJDDEO2I34SA7FW6R/bundle.json","state_url":"https://pith.science/pith/PWG57IFAVYJDDEO2I34SA7FW6R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PWG57IFAVYJDDEO2I34SA7FW6R/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":"2026-05-22T07:01:01Z","links":{"resolver":"https://pith.science/pith/PWG57IFAVYJDDEO2I34SA7FW6R","bundle":"https://pith.science/pith/PWG57IFAVYJDDEO2I34SA7FW6R/bundle.json","state":"https://pith.science/pith/PWG57IFAVYJDDEO2I34SA7FW6R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PWG57IFAVYJDDEO2I34SA7FW6R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:PWG57IFAVYJDDEO2I34SA7FW6R","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":"8f836955e6fc077a3771e0074380ae8255d2e2bb8efeb2e950cc764729350d80","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-08-07T05:41:46Z","title_canon_sha256":"91ef05050140a1034026f371219a51ac053fcb23940ab79f11e5139c299628d1"},"schema_version":"1.0","source":{"id":"1808.02219","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.02219","created_at":"2026-05-18T00:08:47Z"},{"alias_kind":"arxiv_version","alias_value":"1808.02219v1","created_at":"2026-05-18T00:08:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.02219","created_at":"2026-05-18T00:08:47Z"},{"alias_kind":"pith_short_12","alias_value":"PWG57IFAVYJD","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"PWG57IFAVYJDDEO2","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"PWG57IFA","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:1362c0b21745275ef1d91063b5b5fac0c2982665f21244340d0a2561acd0290c","target":"graph","created_at":"2026-05-18T00:08:47Z","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 show that pharmacosiderite is a novel cluster antiferromagnet comprising frustrated regular tetrahedra made of spin-5/2 Fe3+ ions that are arranged in the primitive cubic lattice. The connectivity of the tetrahedra and the inter-cluster interaction of 2.9 K, which is significantly large compared with the intra-cluster interaction of 10.6 K, gives a unique playground for frustration physics. An unconventional antiferromagnetic order is observed below TN ~ 6 K, which is accompanied by a weak ferromagnetic moment and a large fluctuation as evidenced by Mossbauer spectroscopy. A q = 0 magnetic ","authors_text":"Mikio Takano, Ryutaro Okuma, Takeshi Yajima, Tatsuo Fujii, Zenji Hiroi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-08-07T05:41:46Z","title":"Frustrated Magnetism of Pharmacosiderite Comprising Tetrahedral Clusters Arranged in the Primitive Cubic Lattice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.02219","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":"sha256:4abbc1f3e91b959930ad10461c865b91a58f89873e6e92c5d9c2fe51655dfb71","target":"record","created_at":"2026-05-18T00:08:47Z","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":"8f836955e6fc077a3771e0074380ae8255d2e2bb8efeb2e950cc764729350d80","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-08-07T05:41:46Z","title_canon_sha256":"91ef05050140a1034026f371219a51ac053fcb23940ab79f11e5139c299628d1"},"schema_version":"1.0","source":{"id":"1808.02219","kind":"arxiv","version":1}},"canonical_sha256":"7d8ddfa0a0ae123191da46f9207cb6f468a5eecb5789723484591c0b92323b21","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d8ddfa0a0ae123191da46f9207cb6f468a5eecb5789723484591c0b92323b21","first_computed_at":"2026-05-18T00:08:47.187997Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:08:47.187997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"swVYCjiVRhsfYD10lODIPVfZo76DFuEF5g/Leaf+ULc+UAsu6lPJ0Taoc2P7O55Wq/h/O5RQ7vEqedOSYWNvBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:08:47.188634Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.02219","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4abbc1f3e91b959930ad10461c865b91a58f89873e6e92c5d9c2fe51655dfb71","sha256:1362c0b21745275ef1d91063b5b5fac0c2982665f21244340d0a2561acd0290c"],"state_sha256":"601e10d153078c1cb10174705107c10847ca0294ac60e2ccbecb3f74c12361a3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0SpzXqUPRoE2aU6Dx0PwifjU/OQZKsBIL2Ge9NYkv6AWsaATKKRIdKV5evkvGU8aZPqnULA5y54cU5Bhv6G8DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T07:01:01.372871Z","bundle_sha256":"9cb9b9f156f647f258eda65d4a6220799be6c8a15b5e994d328e1b482ada0991"}}