{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:ZSUT4LEEB6YOFUVWU7WXSKU2Z5","short_pith_number":"pith:ZSUT4LEE","canonical_record":{"source":{"id":"2207.14111","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-07-28T14:26:03Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"2d52235c9a0d8accb0bc9a44c20be77799d5bdf29c92915d628888a138424fde","abstract_canon_sha256":"992ba6056393bb37301fce835b60f7cf6b6f110bed65a6f2fed9f9363fc699ff"},"schema_version":"1.0"},"canonical_sha256":"cca93e2c840fb0e2d2b6a7ed792a9acf44784206622bb5947a8937f745cb92ad","source":{"kind":"arxiv","id":"2207.14111","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.14111","created_at":"2026-07-05T04:44:24Z"},{"alias_kind":"arxiv_version","alias_value":"2207.14111v1","created_at":"2026-07-05T04:44:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.14111","created_at":"2026-07-05T04:44:24Z"},{"alias_kind":"pith_short_12","alias_value":"ZSUT4LEEB6YO","created_at":"2026-07-05T04:44:24Z"},{"alias_kind":"pith_short_16","alias_value":"ZSUT4LEEB6YOFUVW","created_at":"2026-07-05T04:44:24Z"},{"alias_kind":"pith_short_8","alias_value":"ZSUT4LEE","created_at":"2026-07-05T04:44:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:ZSUT4LEEB6YOFUVWU7WXSKU2Z5","target":"record","payload":{"canonical_record":{"source":{"id":"2207.14111","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-07-28T14:26:03Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"2d52235c9a0d8accb0bc9a44c20be77799d5bdf29c92915d628888a138424fde","abstract_canon_sha256":"992ba6056393bb37301fce835b60f7cf6b6f110bed65a6f2fed9f9363fc699ff"},"schema_version":"1.0"},"canonical_sha256":"cca93e2c840fb0e2d2b6a7ed792a9acf44784206622bb5947a8937f745cb92ad","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:44:24.329495Z","signature_b64":"Yz23qnqHH7j6dmskmlZqoBHkmo0ArSeLtp502dZOOjo6YoIHNsf7LlEankHBgkF5VjKruUvpZHHFJB2sjW2hAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cca93e2c840fb0e2d2b6a7ed792a9acf44784206622bb5947a8937f745cb92ad","last_reissued_at":"2026-07-05T04:44:24.328952Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:44:24.328952Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2207.14111","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":"2026-07-05T04:44:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PNnQp+JkNBOUy7LI048y0c6JjY1xQLtYc5o3HXVkmEW2lRtRiCFmr0hhYhMn+gXAX49XCobL9x0q2EW18EkmCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-19T03:50:19.108769Z"},"content_sha256":"8b3f72a95506b4cc688a7b3c99da59a9445b655349b255e6176c2db4fcad42ca","schema_version":"1.0","event_id":"sha256:8b3f72a95506b4cc688a7b3c99da59a9445b655349b255e6176c2db4fcad42ca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:ZSUT4LEEB6YOFUVWU7WXSKU2Z5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Symmetry protected 1D chains in mixed-valence iron oxides","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"Aleksandr I. Chumakov, Denis M. Vasiukov, Elizabeth Blackburn, Georgios Aprilis, Ghanashyam Khanal, Ilya Kupenko, Kristjan Haule, Leonid Dubrovinsky, Sergey V. Ovsyannikov, Stella Chariton, Valerio Cerantola, Vasily Potapkin","submitted_at":"2022-07-28T14:26:03Z","abstract_excerpt":"During the last decade of high-pressure research a whole new series of iron oxides was discovered, like Fe$_4$O$_5$, Fe$_5$O$_6$, Fe$_7$O$_9$ etc., featuring closely related structures with arrays of one-dimensional (1D) chains of trigonal prisms embedded between slabs of octahedra. Here, we develop a unified approach to the series based on a specific crystallographic generation mechanism which predicts the structures of these oxides and naturally classifies them in terms of the slab cycle. When including magnetic interactions, we show that the 1D chains have a symmetry protection against magn"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.14111","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2207.14111/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":"2026-07-05T04:44:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U+7gkHce67zZkBADoXT2fsqYuN2q8nuYbBJ5gOjHQpdNRwa5eQ9tqyjbof9AWwDFL85XFJ1Ft7hjgFOuK0neCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-19T03:50:19.109125Z"},"content_sha256":"9094c5e21cedfd82b967635d82eb0f2cc7b90404f829bfa7b57571b22f7ff600","schema_version":"1.0","event_id":"sha256:9094c5e21cedfd82b967635d82eb0f2cc7b90404f829bfa7b57571b22f7ff600"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZSUT4LEEB6YOFUVWU7WXSKU2Z5/bundle.json","state_url":"https://pith.science/pith/ZSUT4LEEB6YOFUVWU7WXSKU2Z5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZSUT4LEEB6YOFUVWU7WXSKU2Z5/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":"2026-07-19T03:50:19Z","links":{"resolver":"https://pith.science/pith/ZSUT4LEEB6YOFUVWU7WXSKU2Z5","bundle":"https://pith.science/pith/ZSUT4LEEB6YOFUVWU7WXSKU2Z5/bundle.json","state":"https://pith.science/pith/ZSUT4LEEB6YOFUVWU7WXSKU2Z5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZSUT4LEEB6YOFUVWU7WXSKU2Z5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:ZSUT4LEEB6YOFUVWU7WXSKU2Z5","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":"992ba6056393bb37301fce835b60f7cf6b6f110bed65a6f2fed9f9363fc699ff","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-07-28T14:26:03Z","title_canon_sha256":"2d52235c9a0d8accb0bc9a44c20be77799d5bdf29c92915d628888a138424fde"},"schema_version":"1.0","source":{"id":"2207.14111","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.14111","created_at":"2026-07-05T04:44:24Z"},{"alias_kind":"arxiv_version","alias_value":"2207.14111v1","created_at":"2026-07-05T04:44:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.14111","created_at":"2026-07-05T04:44:24Z"},{"alias_kind":"pith_short_12","alias_value":"ZSUT4LEEB6YO","created_at":"2026-07-05T04:44:24Z"},{"alias_kind":"pith_short_16","alias_value":"ZSUT4LEEB6YOFUVW","created_at":"2026-07-05T04:44:24Z"},{"alias_kind":"pith_short_8","alias_value":"ZSUT4LEE","created_at":"2026-07-05T04:44:24Z"}],"graph_snapshots":[{"event_id":"sha256:9094c5e21cedfd82b967635d82eb0f2cc7b90404f829bfa7b57571b22f7ff600","target":"graph","created_at":"2026-07-05T04:44:24Z","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/2207.14111/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"During the last decade of high-pressure research a whole new series of iron oxides was discovered, like Fe$_4$O$_5$, Fe$_5$O$_6$, Fe$_7$O$_9$ etc., featuring closely related structures with arrays of one-dimensional (1D) chains of trigonal prisms embedded between slabs of octahedra. Here, we develop a unified approach to the series based on a specific crystallographic generation mechanism which predicts the structures of these oxides and naturally classifies them in terms of the slab cycle. When including magnetic interactions, we show that the 1D chains have a symmetry protection against magn","authors_text":"Aleksandr I. Chumakov, Denis M. Vasiukov, Elizabeth Blackburn, Georgios Aprilis, Ghanashyam Khanal, Ilya Kupenko, Kristjan Haule, Leonid Dubrovinsky, Sergey V. Ovsyannikov, Stella Chariton, Valerio Cerantola, Vasily Potapkin","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-07-28T14:26:03Z","title":"Symmetry protected 1D chains in mixed-valence iron oxides"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.14111","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":"sha256:8b3f72a95506b4cc688a7b3c99da59a9445b655349b255e6176c2db4fcad42ca","target":"record","created_at":"2026-07-05T04:44:24Z","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":"992ba6056393bb37301fce835b60f7cf6b6f110bed65a6f2fed9f9363fc699ff","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-07-28T14:26:03Z","title_canon_sha256":"2d52235c9a0d8accb0bc9a44c20be77799d5bdf29c92915d628888a138424fde"},"schema_version":"1.0","source":{"id":"2207.14111","kind":"arxiv","version":1}},"canonical_sha256":"cca93e2c840fb0e2d2b6a7ed792a9acf44784206622bb5947a8937f745cb92ad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cca93e2c840fb0e2d2b6a7ed792a9acf44784206622bb5947a8937f745cb92ad","first_computed_at":"2026-07-05T04:44:24.328952Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:44:24.328952Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Yz23qnqHH7j6dmskmlZqoBHkmo0ArSeLtp502dZOOjo6YoIHNsf7LlEankHBgkF5VjKruUvpZHHFJB2sjW2hAA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:44:24.329495Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.14111","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8b3f72a95506b4cc688a7b3c99da59a9445b655349b255e6176c2db4fcad42ca","sha256:9094c5e21cedfd82b967635d82eb0f2cc7b90404f829bfa7b57571b22f7ff600"],"state_sha256":"5c08e26e991d6687f0229ba5b2ecf4e63dab00b16df8b4703a76a4f64243ea4b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E3HKzfUmbULsYTQsfv7p8Ig21tfXZ9YIIUHnXmVRAlRJ677QseGaqZbi1+9Y//EHWBsSE+h5pxS27BNIq5fHCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-19T03:50:19.111112Z","bundle_sha256":"ded9f72d21d3a21aeef67e4f431d7402fa3f77de49d9267884e3192a3ecc9e52"}}